PR-1515 - Onsite Mercury Management Procedure
Content
Petroleum Development Oman L.L.C. Document Title: Onsite Mercury Management Procedure
Document ID
Document Type
Security
Discipline
Owner
Issue Date
Revision
PR-1515
Procedure
nrestricted
!ngineering and Operations
"unctional Operations Manager - OP
#pril $%11
$.%
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PR-1515 – Onsite Mercury Management Procedure
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Document Aut Authorisation
Authorised or !ssue – April "#11
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Revision $i $istory
The folloing is a rief s$%%ar of the 4 %ost recent revisions to this doc$%ent. doc$%ent. #etails of all revisions prior to these are held on file the iss$ing depart%ent. Revision %o& 2.0
Date
Author
'cope ( Remar)s
!ar-11
1.1
3$ne-10
R$d van or'hove Refer to Addend$% 1 for details of +2 +22R 2R / Roi Roin n changes *or%an )+P Roin *or%an Added Appendi Appendi 5 6 7ite 8arning 7ignage )+P
1.0
7ep-09
Roin *or%an )+P / R$d van or'hove +22R
Revieed corrected rationalised and $pdated
0
3$n-02
8. la$
*e Proced$re
iii iii Relat Related ed *usi *usine ness ss Proce Process sses es Code
*usiness Process +,P*M &#.
EP.52
!aintain and Ass$re "acili ilitie ties nt ntegrit
iv Related Related Corporat Corporate e Manage Managemen mentt rame rame /or) /or) +CM. +CM. Documents The related !" #oc$%ents #oc$%ents can e retrieved fro% the !" Business Control Portal .
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PR-1515 – Onsite Mercury Management Procedure
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0A*L, O CO%0,%0' i #oc$%ent A$thorisation........................................................................ ................................... , ii Revision ;istor............................................ ......................................... .................................. 4 iii Related $siness Processes..................................................... ........................................ ...... 4 iv Related orporate !anage%ent "ra%e 8or' <!"= #oc$%ents.................................. ....... 4 1
ntrod$ction..............................................................................................................................5 1.1 ac'gro$nd...................................................... ......................................... ......................... 5 1.2 P$rpose................................................... ......................................... ................................. 5 #istri$tion/Target A$dience.................................................................. ................................ > 1., hanges to the #oc$%ent............................................... .................................... .............. > 1.4 7tep-+$t and Approval................................. ........................................ ............................. > 1.? A&ARP........................................................... ........................................ ............................ >
2 Roles and Responsiilities...................................... ...................................... .......................... 9 , !erc$r !anage%ent Plan........................................ ....................................... .................... 10 ,.1 dentification of the !erc$r Ris'...................................... ............................. ................. 10 ,.2 !erc$r Ris' #ataase.............................................. ........................................ .............. 11 ,., ;igh Ris' #ail Activities ........................................ ........................................ ................. 12 ,.4 PPE and E@$ip%ent for !erc$r !anage%ent............................ ........................ ........... 12 ,.? ;a!at Tea%............................................ ........................................ .............................. 12 ,. !erc$r <onta%inated= 7pills....................... ......................................... ........................1, ,.5 !erc$r ontain%ent &adon Area...................................................... ......................... 1, ,.> ;andling onta%inated 8aste....................... ........................................ ......................... 1, ,.>.1 &i@$id 8aste..............................................................................................................1, ,.>.2 7olid 8aste................................................................................................................14 ,.>., #isposale 8aste......................................................................................................14 ,.>.4 Recclale 8aste......................................................................................................14 ,.9 !aterial / E@$ip%ent sent for 7crap or Repair........................................... .....................14 ,.10 Personnel #econta%ination.................................................................... ....................... 1? 4 !erc$r !anage%ent Proced$res................................................. ....................................... 15 4.1 eneral................................ ........................................ ......................................... ........... 15 4.1.1 Eli%ination and ontrol of Ris's................................................................................15 4.1.2 !erc$r Bapo$r !eas$re%ents.................................................................................15 4.1., Provision for ontain%ent - Ecl$sion Cones............................................................1> 4.2 )se of #econta%ination he%icals.......................................... ......................................1> 4., #econta%ination !ethods....................................................................... ........................ 19 4.,.1 rea'ing ontain%ent <flanges= and +pening to At%osphere................................. ..19 4.,.2 !an$al 7pra.............................................................................................................20 4.,., !echanical / 7tea% nDection.....................................................................................21 4.,.4 ontin$o$s irc$lation...............................................................................................22 Page ?
PR-1515 – Onsite Mercury Management Procedure
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4.,.? onfined 7pace Bis$al nspection and Entr.............................................................2, 4.4 ;ot 8or'ing on !erc$r onta%inated 7$rfaces......................................... .................. 24 4.? Pigging +perations.......................................... ......................................... ....................... 2? 4.?.1 eneral......................................................................................................................2? 4.?.2 Pigging.......................................................................................................................2? 4. 7l$dge Re%oval........................ ......................................... .............................. ............... 2 Appendi 1 6 Personal Protection E@$ip%ent....................................... ............................. ..... 2> Appendi 2 6 Epos$re and "irst Aid................................... ....................................... ............ ,0 Appendi , 6 onta%inated 8aste !anage%ent "lo hart.......................... ......................,2 Appendi 4 6 8or' "loor nstr$ction ard 6 !erc$r.......................................... ................... ,, Appendi ? 6 7ite and E@$ip%ent 8arning 7ignage............................................... ...............,4 Appendi 6 !erc$r 7pillage ...................................... ............................... ......................... ,5 Appendi 5 6 #econta%ination of +ffline E@$ip%ent............................ .................................,> Appendi > 6 #econta%ination of Personnel.................................... ........................ ..............,9 Appendi 9 6 Areviations...................................................... ....................... ....................... 40 Appendi 10 6 Reference !aterial...................................... ........................................ ............ 41 Addend$% 1 6 hanges at Revision 2.0...................................... ................................. .......... 42
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PR-1515 – Onsite Mercury Management Procedure
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!ntroduction /AR%!% M,RC2R3 !' A 4%O/% %,2RO0O!% 0$A0 !' ,0R,M,L3 0O!C ,6,% !% 'MALL AMO2%0'& !0 D!R,C0L3 A,C0' 0$, C,%0RAL %,R6O2' A%D R,%AL '3'0,M'7 CA2'!% D,6,LOPM,%0AL D,LA3'7 MO0OR A%D *RA!% PRO*L,M' L!4, 0$O', A''OC!A0,D /!0$ A20!'M& M,RC2R3 ,!'0' !% 0$R,, ORM'8 !%ORA%!C M,0ALL!C M,RC2R37 !%ORA%!C M,RC2R3 COMPO2%D' A%D ORA%!C M,RC2R3 COMPO2%D'& OR MOR, D,0A!L' O% M,RC2R3 R,,R 0O 'P-"#9:- 'P,C!!CA0!O% OR O%'!0, M,RC2R3 MA%A,M,%0
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*ac)ground The entral +%an gas reservoirs are prod$cing %erc$r ith process facilities <7RPP 7*P and P= inlet concentrations presentl varing eteen 0.04 to 0.0 %g/*% ,. <%illigra%/ *or%al % ,= hich co$ld over the lifeti%e of the facilit co$ld rise to several h$ndred %g/*% ,. Additionall concentrations of %erc$r have een fo$nd in the non-associated gas processed at Fial P $t to date these are ver lo level. 8ith nat$ral gas so%e %erc$r is prod$ced the @$antit dependent on the reservoir. n addition to %etallic %erc$r the gas %a also contain s%all @$antities of %erc$r salts and organic %erc$r. *or%all the %erc$r re%ains for the %ost part in the processing installations and interconnecting pipelines. 8hen %aintenance or operations or' is carried o$t the %erc$r is / can e lierated as in or on: -
Bapo$r fro% steel alls of vessels pipelines pig la$nchers and receiversG
-
As a li@$id in cold parts of the processG
-
n the gas and on glcol filtersG
-
As a sl$dgeG
-
+n pieces of the installation itselfG
-
n de%istersG
-
n %erc$r re%oval edsG
-
As a %it$re in condensate ater glcol etc.
!MPOR0A%0 %O0,8 )nless de%onstrated clean of %erc$r all processing facilities hich have een in contact ith a %erc$r containing strea% ill e considered conta%inated and all or' cond$cted in accordance ith this proced$re.
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Purpose The p$rpose of this proced$re is to ens$re that all personnel P#+ or contract engaged in %aintenance repair inspection and %odification activities at facilities here the ris' of epos$re to %erc$r co$ld e possile are s$ital infor%ed of the preca$tions and actions to e ta'en to red$ce or %ini%ise that ris'. The ris's are nor%all enco$ntered d$ring intr$sive activities i.e. %aintenance internal inspection %odifications etc.
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PR-1515 – Onsite Mercury Management Procedure
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Distri;ution(0arget Audience This proced$re is intended for $se all +perations and !aintenance personnel and ontractors or'ing on ehalf of P#+ on facilities here %erc$r conta%ination is or %ae present d$ring nor%al operations.
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Changes to the Document This doc$%ent shall e s$Dect to revie the #oc$%ent +ner / #oc$%ent $stodian ever , ears fro% the last date of iss$e. At an ti%e d$ring this period the doc$%ent H)sersI %a re@$est the contents to e revieed and revised. Re@$ests for revie and revision shall e %ade in riting to the #oc$%ent $stodian $sing the H)ser "eedac' PageI or sending a H!ar'ed )pI cop of the doc$%ent. The decision to revie or revise the doc$%ent shall rest ith the "$nctional Prod$ction Tea% &eader )+P the +ner.
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'tep-Out and Approval This #oc$%ent is !andator. 7tep-+$t shall e in accordance ith PR-1001e – Operations Procedure Temporary Variance .
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ALARP A&ARP is the acron% for HAs &o As Reasonal PracticaleI hich si%plified %eans Hred$cing the ris' to a level at hich the cost and effort <ti%e and tro$le= of f$rther ris' red$ction are grossl disproportionate to the ris' red$ction achievedI. ull Compliance to PDO 'tandards and Procedures is a )ey element in achieving ALARP .
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Roles and Responsi;ilities
7pecialist 7$pervisor <!erc$r "ocal Point=
•
•
•
•
#eliver Tea% &eader
•
•
•
•
Prod$ction oordinator
•
•
•
Prod$ction 7$pervisor
•
•
•
Area A$thorit
•
•
•
;a!at Tea%
To carro$t a$dits on %erc$r %apping and dataase To chec' that proced$res $sed or developed ontractors for the or' are in co%pliance ith P#+ !erc$r 7pecification and Proced$re To advise on develop%ents and i%prove%ents to !erc$r !anage%ent ithin the nd$str and i%ple%ent here agreed To pro%ote %erc$r aareness ithin their area To ens$re co%pliance to !erc$r !anage%ent Proced$re ithin their area To ens$re all cases of non-co%pliance are reported and investigated To provide assistance to the 7pecialist 7$pervisor hen cond$cting a$dits To ens$re co%pliance to !erc$r !anage%ent Proced$re ithin their area To ens$re that %erc$r ris's are highlighted d$ring Tea% riefings for or' here %erc$r is s$spected or 'non to e present To ens$re !erc$r !ap and #ataase are %aintained c$rrent To $nderta'e site inspections and chec' that deconta%ination and ecl$sion ones are identified To ens$re co%pliance to !erc$r !anage%ent Proced$re To ens$re all personnel are aare of deconta%ination and ecl$sion ones that are in force d$ring or' To ens$re that %erc$r proced$res are attached to PT8 for all or' that ill e $nderta'en in ris' areas To %aintain aareness of %erc$r ris' to all personnel entering the facilit To ens$re that %erc$r testing is $nderta'en prior to or d$ring the co$rse of or' here %erc$r is or s$spected of eing present
•
To ens$re co%pliance to !erc$r !anage%ent Proced$re
•
To test for presence of %erc$r hen contain%ent is ro'en
•
•
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To advise on all %atters relating to !erc$r !anage%ent d$ring sh$tdons and %aintenance operations
To provide assistance hen spills occ$r and ens$re that the incidents are reported To cond$ct onsite %onitoring of the or' site to ens$re %erc$r levels are recorded and to provide arning to personnel hen levels rise or eceed the safe li%its
PR-1515 – Onsite Mercury Management Procedure
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Mercury Management Plan Prior to an or' eing carried o$t on a facilit here there is or co$ld e %erc$r conta%ination a !erc$r !anage%ent Plan shall e p$t in place. The plan ill provide detailed proced$res and preca$tionar steps to e ta'en for nor%al operations planned sh$tdons and $nplanned events or incidences. The !erc$r !anage%ent Plan sho$ld provide details of: •
Ris' !anage%ent in the event of a %erc$r incident
•
;igh ris' dail activities
•
!erc$r reporting and %aintenance of a !erc$r Register
•
&ocation of personal protective e@$ip%ent for $se ith !erc$r
•
&ocation and availailit of !erc$r 7pill and lean$p e@$ip%ent
•
&ocation and stat$s of !erc$r !onitoring e@$ip%ent
•
E@$ip%ent deconta%ination
•
;andling of conta%inated aste s$ch as:
•
onta%inated aste containers
onta%inated PPE
onta%inated 7l$dge / Resid$e <incl$ding r$st scale=
8aste transportation
Personnel #econta%ination
The !erc$r !anage%ent Plan sho$ld also contain detailed proced$res to cover: •
)se of deconta%ination che%icals
•
#econta%ination %ethods for:
!onitoring and opening of flanges and rea'ing contain%ent
Bessel internals
onfined space vis$al inspection and entr
•
;ot or'ing on conta%inated s$rfaces
•
Pigging
•
7l$dge re%oval
NOTE: Provisions in te !etod "tatement must ensure #$ %aste as a result &rom cleanin$ is as little as possi'le to prevent costly disposal costs( Vessel cleanin$ %ill 'e assessed ta)in$ into consideration type o& repair and * or inspection re+uired(
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!denti=ication o= the Mercury Ris) +n facilities 'non to have or s$spected of having %erc$r conta%ination in the process strea%s a %ap of the facilit ith 'non / predicted epos$re levels shall e prepared and %aintained the Asset ;older <e.g. %ar'ed $p P"7=. This can e achieved in the folloing %anner:
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a.
;istorical #ata - !apping the %erc$r conta%ination d$ring a previo$s sh$tdon or hen intr$sive %aintenance has een $nderta'en
.
Predictive #ata 6 +taining %erc$r conta%ination data fro% a facilit that is operating $nder si%ilar conditions and $sing this as a Hench%ar'I OR $sing PR-1515 – Onsite Mercury Management Procedure
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facilit operating para%eters and data fro% the ind$str to predict possile conta%ination levels and Hhot spotsI. The folloing si%plified flo diagra% <o$rtes *o-;eat Reso$rces= ill$strates a possile etent of %erc$r conta%ination thro$gho$t the process path in a gas treat%ent and eport facilit.
as M ondensate 8aste 8ater
<1 -4N=
<100N=
7eparator 7torage
<? -10N=
"$el as
<90N= <0.01
&P o%pression
o%pression
<90N=
0.01
A%ine 7ste%
A%ine
!R)Is
<?0-50N=
<0.01N= <20-,0N=
<?-10N=
*& Eport
<20-,0N=
!ol 7ieve /
lcol
Eport
TL-&T7 M ;eat Echanger
lcol )nit <20-,0N=
As can e seen the conta%ination is red$ced thro$gho$t the process the concentration of %erc$r eing left ehind dependant on the process ele%ent i.e. te%perat$re press$re and tpe of phase. t can also e seen that conta%ination is transferred to interfacing %edi$%s s$ch as a%ine and glcol. Regardless of the n$%er of processes there ill e conta%ination at the o$tlet of the process. NOTE: Te level o& contamination %ill 'e dependent on te level o& mercury in te %ell &luids enterin$ te process( )sing the aove ill$stration as a g$ide all points of the process can e tagged and %eas$red to provide a %ap of ris' areas.
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Mercury Ris) Data;ase A %erc$r ris' dataase ased on the findings of the !erc$r Ris' !ap detailed in ,.1 %$st e %aintained the Asset ;older ho ill 'eep $p-to-date records of %erc$r conta%ination and its location. A dataase shall e devised for each facilit and shall e $pdated henever or' is $nderta'en that re@$ires Hrea'ingI the press$re envelope and presenting a ris' of %erc$r epos$re. !onitoring points for the dataase can e estalished $sing the !erc$r Ris' !ap. 8ith reference to Appendi 1 6 Personal Protection E@$ip%ent to ens$re consistenc the sa%e dentification riteria shall e $sed hen identifing %erc$r ris' levels in the facilit / plant. reen shall e considered as safe and no %erc$r aove the loer li%it of J0.02? %g/*% , epected. Red shall e considered as a %erc$r ris' ith %erc$r K0.02? %g/*% , epected or li'el to e fo$nd. Additionall Red shall e f$rther div ided into &evels 1 2 and , and shall align ith Appendi 1. The dataase shall e str$ct$red to reflect this philosoph.
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PR-1515 – Onsite Mercury Management Procedure
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$igh Ris) Daily Activities +n facilities or e@$ip%ent here %erc$r conta%ination is possile or s$spected all nor%al activities $nderta'en +perations and !aintenance that shall e considered Hhigh ris'I ith regards to epos$re shall e identified i.e. sa%pling li@$ids to open t$ndish venting or or'ing aro$nd open vents etc. These activities shall onl e alloed if the correct PPE <refer to Appendi 1= is orn and the area / e@$ip%ent is inspected and tested safe the ;a!at Tea%. These activities shall e entered in the %erc$r ris' dataase. The dataase shall e $pdated henever the activit is $nderta'en and the data %aintained c$rrent.
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PP, and ,>uipment =or Mercury Management At facilities that are identified as having a %erc$r ris' PPE specific for %erc$r epos$re and e@$ip%ent and tools re@$ired for %erc$r deconta%ination shall e availale. The PPE and e@$ip%ent shall e $nder the control of the ;a!at Tea% &eader and co%prise $t not e li%ited to: •
Respirators
•
"ace protection
•
overalls
•
loves and oots
IMPORTANT - !ercury can adere to clotin$ and &oot%ear, %ic may lead to continuous eposure( Tere&ore clotin$ and &oot%ear needs to 'e manu&actured &rom material %ic is non-adesive &or mercury( Refer to Appendi 1 for details of PPE re@$ired for tpe of or' $nderta'en and possile li%its of epos$re.
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$a?Mat 0eam 8herever or henever or' is eing $nderta'en at a facilit here there is a possiilit or a 'non ris' of a %erc$r release there shall e a ;a!at Tea% present. The ;a!at tea% shall co%prise to persons each in correct PPE and e@$ipped ith a %erc$r vapo$r %onitor and ac' pac' spra charged ith a deconta%inant che%ical. +ne of the tea% shall e responsile for %onitoring %erc$r vapo$r and the second %e%er for ad%inistering a controlled deconta%inant spra if re@$ired. The e%edded ill$stration shos a tpical ;a!at Tea% at a or' site.
*+ 8+R in a !erc$r onta%inated Area can egin itho$t a ;a!at Tea% ho shall e present at vessel opening flange rea'ing spills c$tting etc. An e@$ip%ent or scrap leaving the site to e sent for repair or discarded shall e %onitored the tea% and tagged ith details of the level of %erc$r fo$nd.
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PR-1515 – Onsite Mercury Management Procedure
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8here possile all e@$ip%ent sho$ld e deconta%inated E"+RE leaving the site. Refer section 2.9.
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Mercury +Contaminated. 'pills t is reco%%ended that facilities here it is 'non %erc$r conta%ination eists sho$ld e provided ith %erc$r spill e@$ip%ent. enerall the e@$ip%ent shall co%prise of PPE %erc$r vapo$r tester and spra e@$ip%ent containing a deconta%inant che%ical to address and treat the spill. P$re li@$id %erc$r <as in silver colo$red droplets= can easil e re%oved an ind$strial vac$$% cleaner e.g.TigerBac that is capale of handling li@$ids. 7%aller spills can e handled $sing a his' on pan sponge or a pipette. Reference the "lochart in Appendi for the reco%%ended approach to !erc$r 7pill !anage%ent.
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Mercury Containment Laydon Area Ever facilit that has a ris' of %erc$r conta%ination shall estalish a contain%ent area here %erc$r aste and conta%inated e@$ip%ent / %aterials can e stored prior to treat%ent or shipping to a long t er% storage location. The contain%ent ladon area shall e controlled and %a have facilities to HcleanI conta%inated e@$ip%ent and process so%e aste. The conta%inated ladon area shall have controlled access and e s$Dect to periodic %onitoring. All %onitoring res$lts shall e recorded in the H!erc$r Ris' #ataaseI.
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$andling Contaminated /aste Proced$res and g$idelines re@$ire eing in-place hich shall address the handling of conta%inated aste. Refer to "P-100. #"E "peci&ication - /aste !ana$ement
Li>uid /aste &i@$id aste i.e. fl$shing fro% vessels or draining fro% deconta%ination shall e re%oved and stored in s$itale containers $ntil it has een treated or re%oved fro% site. &arge @$antities of li@$id %a e p$%ped or s$ctioned in to a vac$$% tan'er. 7%aller @$antities %a e decanted or p$%ped to dr$%s i.e. 4? gallons %etal or plastic tpes. The dr$%s shall have a li@$id t ight seal hen filled and e %ar'ed clearl to indicate their content. An spillages o$tside of the contain%ent shall e spraed ith a deconta%inant che%ical and %onitored for %erc$r vapo$r. Bac$$% tan'er shall e cleaned internall $sing a che%ical ash and eternall $sing a spra once all aste li@$ids have een discharged to the treat%ent area. *o vac$$% tan'er shall e alloed to leave the contain%ent area $ntil it has een thoro$ghl chec'ed for %erc$r conta%ination. 7%aller dr$%s once e%ptied shall e treated in a si%ilar %anner and cleaned internall and eternall efore eing re-$sed. &arge @$antities of li@$id aste shall e treated che%icall <as advised specialist co%pan= to concentrate the %erc$r aste fro% the li@$id.
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'olid /aste 7olid aste s$ch as sl$dge and r$st scale shall e re%oved and stored in containers or dr$%s as ill$strated elo:
Polthene sheeting sho$ld e $sed to cover the sl$dge and an air t ight lid and sealing arrange%ent fitted. The contents and nat$re of the ris' shall e clearl stated on the o$tside of the dr$%. f re@$ired d$e to spillage of the content d$ring loading the o$tside of the dr$%s shall e spraed ith a deconta%inant che%ical. The dr$%s shall e stored in a contain%ent area $ntil re%oval for disposal.
Disposa;le /aste n a si%ilar %anner to solid aste disposale aste shall e stored in sealed dr$%s. #isposale aste shall e that hich ill not e treated $t disposed of in accordance ith legislative directives. The contents and nat$re of the ris' shall e clearl stated on the o$tside of the dr$%.
Recycla;le /aste 7o%e ite%s eposed to %erc$r %a e re-$sed i.e. PPE li'e oots nitrile r$er gloves and face %as's. This ill e stored in containers and then sent for processing and cleaning.
<&B
Material ( ,>uipment sent =or 'crap or Repair 7trict controls shall e eercised over all %aterial and e@$ip%ent that is %oved off site for scrap or repair. The folloing shall e folloed: •
•
•
Page 14
All e@$ip%ent or %aterial that leaves the designated contain%ent areas shall e tested for %erc$r and deconta%inated accordingl. All ite%s that are to e sent for repair or scrap shall e deconta%inated eternall if %erc$r conta%ination is identified. te%s s$ch as valves pipe cooler $ndles etc shall have open ends and identified lea' paths covered in polthene or si%ilar to %iti gate spillage.
PR-1515 – Onsite Mercury Management Procedure
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•
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&aelling indicating the %erc$r ris' level i.e. reen Red 1 2 or , for those ite%s here conta%ination has een identified shall e attached to all ite%s shipped off site.
The transporters of the e@$ip%ent or scrap shall e advised of the %erc$r haard and an preca$tions / actions that re@$ire e oserving / carring o$t in the event of an incident d$ring transit. The repairer if a , rd Part shall e provided ith an infor%ation regarding the ite% eing shipped and preca$tions / proced$res to e folloed for deconta%ination d$ring disasse%l. NOTE: PO sall ensure tat rd Party contractors ave procedures in place &or dealin$ %it mercury contamination as part o& te vettin$ process(
<&1#
Personnel Decontamination #econta%ination shall e $sed for personnel eposed to %erc$r. #econta%ination %a e as si%ple as a foot ash tra and changing area to a f$ll che%ical ash don. NOTE: 2ll tools and special e+uipment tat as 'een used on site in te mercury contamination environment must 'e decontaminated as %ell The proced$re for a f$ll deconta%ination shall co%prise of the folloing steps:
Page 1?
1.
8hen leaving or' area ash oots and glove at foot ath station
2.
8al' thro$gh dedicated patha to personnel deconta%ination station
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,.
Enter 8et #econta%ination 7tation and get stand- Technician to spra #econta%ination che%ical on conta%inated PPE folloed a ater ash
4.
&eave the 8et and go to #r #econta%ination )nitG Technician ill assist in the re%oval of all orn PPE
?.
8hen all PPE has een re%oved leave the #r #econta%ination 7tation
.
The #r #econta%ination )nit Technician ill dispose of the conta%inated s$it into aste dr$% provided
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Mercury Management Procedures
&1
eneral
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,limination and Control o= Ris)s Epos$re to %erc$r vapo$r shall e li%ited to A&ARP <refer to "ection 1(3 =. !MPOR0A%0 %O0,: All ris' assess%ents shall e carried o$t $sing the standard PO Ris) 2ssessment 4orm( Refer GU 273: !" G#i$eline % Pe&'it to (o&k )ob !afety Plans The folloing needs to e considered in order of priorit d$ring or' planning: 1.
he%ical treat%ent. 6 onsideration shall e given to the $se of che%icals to clean and pre-treat the e@$ip%ent prior to or' eing $nderta'en.
2.
nstall forced ventilation. - 8ith forced ventilation safe levels of %erc$r vapo$r in air %a e achieved itho$t the need for PPE. This co$ld appl for or' inside vessels and confined spaces providing all other ris's i.e. hdrocarons are assessed and %itigated
,.
7eparate the %erc$r containing installation <open vessels and e@$ip%ent= fro% the or'force erecting arriers aro$nd the% ith arning signs.
f option 1 and 2 are not possile $se applicale PPE <hen %erc$r levels are aove 0.02? %g/*%,=. Refer Appendi 1.
Mercury 6apour Measurements efore and d$ring or' on installations s$spected of containing %erc$r %erc$r vapo$r %eas$re%ents shall e eec$ted to chec' if %erc$r vapo$r is present. P#+ $ses the 3ero%e 40? and *ippon E! %erc$r vapo$r analer. Re@$ire%ents for %erc$r vapo$r %eas$re%ents are: •
•
•
the need to e eec$ted a person trained and fa%iliar ith the test e@$ip%entG the e@$ip%ent needs to e calirated once earl to the g$aranteed factor specificationsG The %eas$re%ents shall e eec$ted in the reathing one. The res$lts of these %eas$re%ents deter%ine hether PPE is necessar
The +cc$pational ;ealth Epos$re &i%it <+E&= is c$rrentl 0.02? %g/*%, <8orld ;ealth +rganiation and 7;E&&=. f concentrations aove this val$e are %eas$red f$ll PPE needs to e $sed. Refer Appendi 1. elo this concentration the or' can contin$e as nor%al. f %ore than 1.2?0 %g/*%, is %eas$red f$ll face %as' ith %erc$r cartridges reathing apparat$s ith Biton <or other s$itale %aterial= s$its shall e orn or if necessar Biton s$it ith eternal air s$ppl. !eas$re%ents shall e ta'en at reg$lar intervals and ta'e acco$nt of changing cli%atic conditions i.e. ind te%perat$re and h$%idit.
Page 15
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Petroleum Development Oman LLC !erc$r vapo$r %eas$re%ents shall e re@$ired hen: •
•
Bessels e@$ip%ent and pipeor' etc are opened $p !aintenance elding grinding c$tting conta%ination is 'non or s$spected
carried
o$t
•
onfined space entr is re@$ired
•
)ns$re of the stat$s of an open vessel etc.
•
irc$%stances $nder hich the or' is carried o$t change
here
%erc$r
The folloing strateg for %eas$ring %erc$r vapo$rs is reco%%ended: 1.
7tart ith a aseline %eas$re%ent prior to the start of the or'
2.
arr o$t a second %eas$re%ent hen there is a potential for epos$re
,.
f the res$lt is elo 0.02? %g/*%, start the or' and repeat %eas$re%ent as necessar
4.
f the res$lt is aove 0.02? %g/*%, ta'e control %eas$res repeat %eas$re%ents reg$larl
?.
&og the res$lts on a sheet attached to the PT8.
Provision =or Containment - ,clusion ones #$e to the nat$re of %erc$r and its ailit to travel over great distances in li@$id for% contain%ent of the or' area shall e re@$ired. The Ecl$sion Cone estalished shall e large eno$gh to prevent conta%ination of the o$tside areas $t s%all eno$gh to e easil %onitored. 8ithin an Ecl$sion Cone personnel ill e re@$ired to ear appropriate PPE hich %a incl$de Hspecialist protective coveralls and respiratorsI. The deconta%ination station<s= %$st e located at the entr points Hto and fro%I the Ecl$sion Cone. Entr and eit fro% this one shall e strictl controlled and all personnel shall e deconta%inated on eiting.
&"
2se o= Decontamination Chemicals "or sh$tdons and %$ltiple rea's in to the contain%ent envelope to re%ove replace or repair e@$ip%ent and pipeor' the $se of specialist che%icals is reco%%ended to assist in deconta%ination and control %erc$r vapo$rs released. he%icals %a e s$pplied and ad%inistered a , rd part specialist contractor or s$pplied for application P#+ staff. 8hichever ro$te of s$ppl and $se is selected all or' shall e controlled $nder the PT8 sste% and ith reference to the 7;+ card for that che%ical and / or the !7#7 <!aterial 7afet #ata 7heet=. Prior to an che%icals eing $sed P#+ s$fficient training shall e given the che%icals s$pplier to ens$re that staff is ale to safel $nderta'e: •
7torage
•
orrect selection of PPE
•
orrect %iing for all applications
•
Page 1>
Application according to re@$ire%ent
•
ollection and disposal
•
E%ergenc spill clean $p
PR-1515 – Onsite Mercury Management Procedure
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Decontamination Methods Bessels 'non to e or s$spected of eing conta%inated ith %erc$r shall e deconta%inated efore entr. NOTE: 5t is essential to minimise 6li+uid7 %aste production 'ecause o& di&&icult disposal procedures and very i$ associated costs( #ifferent %ethods of deconta%ination can e $sed and the correct %ethod depends on: •
•
•
Reason for %anned entr i.e. is it practicale for inspectors to or' in f$ll %erc$r PPE A%o$nt of %erc$r / sl$dge epected in the sste% 7ste% dna%ics and availale facilities <7tea% hot nitrogen ro$te to flare sie of the vessel etc=
#econta%ination <for %erc$r= is perfor%ed after the sste%s / e@$ip%ent has een isolated drained gas freed and p$rged in accordance ith estalished proced$res alread in force. PR-1083 6
5solation o& Process E+uipment
PR-1088 6
Preparation o& "tatic E+uipment &or 5nternal !aintenance and 5nspection
PR-108 -
9as 4reein$, Pur$in$ ;ea) Testin$ o& Process E+uipment 6Ecludin$ Tan)s7
PR-108. -
9as 4reein$ and Pur$in$ o& Tan)s
EP 80(10(<0(11-
en. leaning of E@$ip%ent
NOTE: "pecial attention must 'e $iven to condensate tat can remain 'eind on trays a&ter drainin$( Tis could 'e removed 'y &lusin$ %it %ater &rom 'ottom to top( Te stren$t o& te column and its &oundation sall 'e cec)ed to ensure tat ecessive loads are not applied(
*rea)ing Containment +=langes. and Opening to Atmosphere Prior to rea'ing flanges re%oving valves singing spectacle linds or rea'ing contain%ent etc. %onitoring and deconta%ination shall e carried o$t. The spra is applied directl on to the area to co%ine ith %erc$r vapo$r or ele%ental %erc$r to for% a sol$tion hich ill e collected in a receptacle positioned $nder the rea'. This tas' ill e the responsiilit of a ;a!at Tea% <refer to 2.?=. 1.
The position of the rea' <flange valve etc.= shall e identified and the area prepared. A s$itale container ill e placed $nder here the rea' is to e %ade and provision %ade to contain an spills <polthene covers etc.=
2.
The ;a!at Tea% shall %onitor and record the ase reading efore an rea's are %ade.
,.
The olts / n$ts shall e slac'ened off starting at the top and or'ing to the otto%. Appropriate PPE as indicated on the Ris' !ap shall e orn all operatives for this tas'.
4.
The area aro$nd the rea' shall e %onitored again ith the olts / n$ts slac'ed off. f the reading on the %onitor is aove the +E& <0.02? %g/%,= a deconta%inant spra shall e applied to the area as shon elo.
Page 19
PR-1515 – Onsite Mercury Management Procedure
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?. The deconta%inant ill e given ti%e to or' <approi%atel 10 6 1? %ins= and the area %onitored again and recorded. The olts / n$ts can e re%oved and placed in a container for cleaning / deconta%ination and the flanges ro'en or the valve re%oved etc. NOTE: 4or lar$e pipe or &ittin$s suita'le li&tin$ e+uipment may re+uire to 'e used tis must 'e monitored and decontaminated i& re+uired a&ter use( . All pipe and / or fittings re%oved shall e agged or rapped if conta%inated and sent to the prescried area for cleaning. The ends of the fied pipe shall e either rapped or lan'ed to prevent cross-conta%ination. 5. Attach a colo$r coded Tag to identif levels of ;g detected: $g Level +mg(%m <. E#&#"5 R,D 1 R,D " R,D <
#&#"5 to E#&"5# #&"5# to E1&"5# F1&"5#
Manual 'pray
8here the vessel is s%all deconta%ination can e $nderta'en $sing a %an$all operated spra as follos:
Page 20
1.
+pen %ana access oserving all preca$tions re@$ired for confined space entr and gas testing.
2.
Ta'e and record the ase reading of the %erc$r vapo$r in the vicinit of the %ana <;a!at Tea%=. PR-1515 – Onsite Mercury Management Procedure
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,.
f deconta%ination is re@$ired %as' off the %ana ith clear polthene sheeting
4.
!a'e a penetration in the polthene sheeting and direct the spra aro$nd the vessel internals thro$gh the penetration.
?.
Allo ti%e for deconta%inant to act <10 6 1? %in$tes= and ta'e and record another %erc$r vapo$r reading.
.
Repeat steps 4 M ? <if re@$ired= $ntil conditions ithin the vessel are elo 0.02? %g/*%, .
5.
#rain li@$ids fro% the otto% of the vessel to a closed drain sste% or toic aste storage dr$%s / vac$$% tan'er.
8or' can no e $nderta'en earing the appropriate PPE. !erc$r vapo$r reading shall e ta'en at reg$lar intervals <specialist s$pervisor to advise=. /or) shall ;e stopped and decontamination repeated i= levels o= mercury vapour increase a;ove sa=e levels +#&#"5 mg(%m< ..
Mechanical ( 'team !nGection
+n larger %ore co%ple vessels s$ch as col$%ns i.e. glcol contactors stailisers etc. deconta%ination %a re@$ire a %echanicall p$%ped or stea% inDection sste% to e $sed. Refer to EP 80(10(<0(11-9en( Cleanin$ o& E+uipment .
Page 21
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The p$%ping sste% sho$ld $tilise a high point for inDection of the spra here as the stea% inDection sho$ld e at a lo point to allo for the stea% vapo$r <ith the deconta%inant= to rise $p thro$gh the vessel and internal fittings venting an vapo$r re%aining to the flare or vent sste%. 1.
+serve all re@$ire%ents for confined space entr and gas testing.
2.
onnect te%porar fittings to eisting pipeor' or install te%porar spools if re@$ired. O;serve all precautions regarding mercury contamination hen underta)ing this or).
,.
Ta'e and record the ase reading of the %erc$r vapo$r in the vessel at s$itale access points on the vessel <;a!at Tea%=.
4.
7tart the deconta%ination process. Allo s$fficient ti%e for the deconta%ination che%ical to contact the vessel internals and %a'e its a don to the otto% of the vessel for re%oval.
?.
7top the spra / stea% inDection process and ta'e / record vapo$r readings at sa%e points as ase readings.
.
Repeat steps , M 4 <if re@$ired= $ntil conditions ithin the vessel are elo 0.02? %g/*%,
5.
#rain li@$ids fro% the otto% of the vessel to the closed drain sste% or toic aste storage dr$%s / vac$$% tan'er.
8or' can no e $nderta'en earing the appropriate PPE. !erc$r vapo$r reading shall e ta'en at reg$lar intervals <specialist s$pervisor to advise=. /or) shall ;e stopped and decontamination repeated i= levels o= mercury vapour increase a;ove sa=e levels +#&#"5 mg(%m< ..
Continuous Circulation
irc$lation and soa'ing of the che%ical %i ill e considered here heav %erc$r conta%ination or internal corrosion is identified or s$spectedG or here there is a possiilit that the %erc$r has co%ined ith corrosion scale.
Page 22
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#$ring circ$lation the che%ical ill e p$%ped aro$nd the sste% and vessel and alloed to soa' on the s$rfaces or into the scale that %a e dislodged. irc$lation %a e $p to 12 ho$rs or %ore and re@$ire the installation of a portale p$%ping loop. The sol$tion is then vac$$%ed fro% the sste% a vac$$% tan'er. The che%ical inding of an %erc$r conta%inants ill red$ce or prevent vapo$rs eing given off hen the sste% or vessel is opened. NOTE: Tis metod o& decontamination sall re+uire some en$ineerin$ %or) to remove * install te pipe%or) and e+uipment &or pumped circulation i& no suita'le means is availa'le in te desi$n o& te system * e+uipment( The proced$re for ontin$o$s irc$lation depends on the config$ration to e $sedG hoever the folloing shall e applicale: •
•
•
rea'ing contain%ent <flanges= and re%oving pipeor' and valves shall e $nderta'en as descried in 4.,.1. !onitoring and recording ase line %erc$r vapo$r readings sho$ld e carried o$t at s$itale %an as ens$ring all other relevant proced$res have een adhered to. The %anas sho$ld e covered ith polthene and sa%pled thro$gh penetrations in the cover. Reg$lar chec's ill e carried o$t on the co$rse strainer. Personnel shall ear appropriate PPE d$ring cleaning all aste. 8aste sho$ld e treated as toic and %onitored / stored correctl.
8or' can e $nderta'en on the vessel hen all draining has een co%pleted and the %erc$r vapo$r levels are J0.02? %g/*%, . !erc$r vapo$r reading shall e ta'en at reg$lar intervals <specialist s$pervisor to advise=. /or) shall ;e stopped and local decontamination underta)en i= levels o= mercury vapour increase a;ove sa=e levels +#&#"5 mg(%m< ..
Con=ined 'pace 6isual !nspection and ,ntry onfined space vis$al inspection and f$ll entr shall e treated differentl hen testing for the presence of %erc$r vapo$r. The Oheads and sho$lders onl inspection here a f$ll entr is not re@$ired also re@$ires that confined space has een certified for entr $nder the PT8 sste%. Then a vis$al inspection onl re@$ires the i%%ediate vicinit of the access point to e %onitored for %erc$r vapo$r and a deconta%ination che%ical spra applied in that vicinit to re%ove it if fo$nd. The Oheads and sho$lders onl inspection can then e carried o$t after a second ro$nd of vapo$r %onitoring has een $nderta'en to confir% conditions are safe. 8here a f$ll entr to the confined space is re@$ired for repair or inspection then the folloing steps shall e ta'en:
Page 2,
1.
onfir% that the onfined 7pace Entr ertificate is valid.
2.
!onitor the access point and record the ase reading <;a!at Tea%=
,.
Appl deconta%inant spra if re@$ired. )se PPE as per Appendi 1 for onfined 7pace Entr and enter the confined space <;a!at Tea%=.
4.
*+TE: All safet preca$tions detailed in PR-11=< – Entry in to a Con&ined "pace appl
?.
!onitor the internal space of the confined space and record an Hhot spotsI. Appl deconta%inant spra as re@$ired to treat the areas. Pa partic$lar attention to internal fittings and solids / li@$ids in the otto% of the space.
.
8hen the confined space has een %onitored and all hot spots recorded / treated or' can e alloed to e $nderta'en. Bentilation ith forced etract PR-1515 – Onsite Mercury Management Procedure
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shall e installed for areas here %erc$r vapo$r is s$spected or anticipated to acc$%$late. 5.
!erc$r vapo$r reading shall e ta'en at reg$lar intervals <specialist s$pervisor to advise=. /or) shall ;e stopped and local decontamination underta)en i= levels o= mercury vapour increase a;ove sa=e levels +#&#"5 mg(%m<..
8hen f$ll access is re@$ired for a confined space then PPE sho$ld e provided that prevents s'in contact ith the internals of the space here %erc$r conta%ination %a e or still is present. Additionall a face %as' %$st e orn to prevent ingress in to the ees.
&
$ot /or)ing on Mercury Contaminated 'ur=aces The folloing shall e noted hen considering H;ot 8or'I on s$rfaces that are 'non to e or li'el to have een conta%inated d$e to %erc$r epos$re. a.
All e@$ip%ent that co%es in contact ith %erc$r conta%inated gases or prod$ced fl$ids sho$ld e considered to e !erc$r onta%inated. <The a%o$nt of %erc$r asored into the %etal s$rface ill var.=
.
!erc$r can enter the %atri of a %etal s$rface and for% a%alga%s ith other s$stances hich ill not vaporise and ill therefore not e detectale ith a %erc$r vapo$r analser. 8hen these s$rfaces are dist$red and / or heated the %erc$r ill vaporise.
c.
#econta%ination of a s$rface does not %a'e the e@$ip%ent H!erc$r "reeI. ;eat ill release %erc$r that is previo$sl not detectale and the vaporisation rate is li'el to e etre%el high. NOTE: /en mercury is eated in te presence o& air to a'ove >0 de$ C it is converted to !ercuric Oide( 2t >00 de$ C it decomposes separatin$ te #$ and te Oy$en( /AR%!%8 Mercury analysers do not detect Mercuric Oide +$gO.&
d.
8hen elding or grinding %erc$r conta%inated %etal re%ove the e@$ip%ent to a ell ventilated area and 'eep people that are not re@$ired for the or' ell aa. Refer section 4.1., Ecl$sion Cones.
e.
!ost %erc$r che%ical s$its are fla%%ale and therefore a fireproof overall %$st e orn over the che%ical s$it. NOTE: Tis &ireproo& overall is li)ely to 'ecome mercury contaminated and must 'e disposed or soa)ed in decontamination cemicals and tested prior to 'ein$ placed in te normal laundry(
Page 24
f.
Personnel or'ing in the vicinit of the hot or' %$st ear correct PPE etc.
g.
All hot or' $nderta'en on e@$ip%ent ith %erc$r present shall e H$pindI in an Ecl$sion Cones. 8elding or' here there are elevated levels of %erc$r vapo$r present sho$ld e assessed ;7E and the 7pecialist 7$pervisor and here necessar Hpositive flo face %as'sI shall e $sed all persons in the direct vicinit of the elding.
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Pigging Operations +n facilities here there is a ris' of %erc$r conta%ination consideration sho$ld e given to pigging <la$nching and receiving= operations. The highest ris' ill e in the receiving operations d$e to the higher ris' of epos$re to sl$dgeG la$nching ill still have a ris' $t this ill e li%ited as sl$dge ill not tend to e present.
eneral The folloing are areas of general aareness that sho$ld e addressed: •
•
•
•
•
&a$ncher and receiver li@$id drains sho$ld e provided ith a %eans of capt$ring li@$ids for storage and disposal as haardo$s aste. NOTE: !ost PO &acilities do not ave tis provision 6yet7 &a$ncher and receiver vents sho$ld e ro$ted to a safe area aa fro% here personnel are or'ing #rip tras sho$ld e provided $nder the la$ncher and receiver doors to capt$re an spillage A ladon area for toic aste shall e provided that is clearl %ar'ed ith arning signs Pigging cres shall e provided ith s$itale arrier %aterials ith hich to place pigs and tools for transportation $ntil the can e deconta%inated and cleaned.
/AR%!%8 Pigs and tools shall not ;e transported loose a=ter they have ;een eposed to possi;le mercury contamination&
Pigging The folloing proced$re shall e folloed for Pipeline Pigging +perations PR-10<? – Pipeline Pi$$in$ Procedure. The 7teps elo sho$ld e incl$ded here relevant.
Page 2?
1.
orrect PPE for the %erc$r ris' %$st e orn. f the ris' is $n'non respirators face %as' and gloves shall e orn $ntil li%it of ris' is ascertained.
2.
!onitor and record ase line reading aro$nd the vicinit of the la$ncher / receiver efore pigging operations start <;a!at Tea%=.
,.
7et $p a deconta%ination point for all personnel or'ing on the pigging operation. The deconta%ination point sho$ld e e@$ipped ith storage for haardo$s %erc$r aste.
4.
Ens$re that all li@$id draining fro% the la$ncher / receiver arrel is %onitored and recorded. All li@$ids shall e capt$red in a container. An spills shall e %onitored treated and recorded.
?.
Ens$re that provision is %ade to contain an spills hen the pig la$ncher / receiver door is opened.
.
;a!at tea% shall e present and %onitor hen the pig la$ncher / receiver door is opened. #econta%inant che%ical shall e $sed as re@$ired to address %erc$r vapo$r release.
5.
efore loading the pig %onitor and record the conditions in the la$ncher.
>.
The $sed pig and sl$dge fro% the pig receiver shall e treated as haardo$s. The pig shall e agged and tagged and all sl$dge incl$ding asorent aste shall e placed in containers and sealed. The containers shall e tagged and %ar'ed according to the level of conta%ination. PR-1515 – Onsite Mercury Management Procedure
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9.
!onitor and deconta%inate or'ing part as re@$ired and store all conta%inated PPE in a sealed container. onta%inated tools shall e agged and sent for cleaning.
10.
!ove all haardo$s aste containers to the designated area. !onitor and deconta%inate eternal s$rfaces if re@$ired. &oad aste sec$rel on transport and ship to designated %erc$r aste storage and treat%ent area.
NOTE: Te contaminated pi$ sall 'e sent &or cleanin$ 'e&ore it can 'e returned &or use(
&@
'ludge Removal 8hen dealing ith sl$dge the folloing ;7E 7pecifications shall e referenced and adhered to: •
"P-100>
#"E "peci&ication - Emissions to 2tmospere
•
"P-1003
#"E "peci&ication - 2+ueous E&&luents
•
"P-100.
#"E "peci&ication - /aste !ana$ement
•
"P-1180
#"E "peci&ication - Naturally Occurrin$ Radioactive !aterials 6NOR!7
A proportion of the %erc$r conta%ination 1?N to 20N shall e fo$nd %ied ith the hdrocaron sl$dge that acc$%$lates in the pipelines in the otto%s of vessels and at lo points on the e@$ip%ent.
PR-1055 6 Preparation o& "tatic E+uipment &or 5nternal !aintenance and 5nspection covers the preparation of static e@$ip%ent hich incl$des vessels and pipeor' and has a specific 7ection ao$t cleaning in partic$lar. 7l$dge can occ$r in a vessel that is ver diffic$lt to dislodge and %a re@$ire to e treated to %a'e it possile to re%ove. !MPOR0A%08 7l$dge can also contain other conta%inants that re@$ire to e handled in a partic$lar %anner i.e. *+R! and this shall e ta'en into consideration. 8hen dealing ith sl$dge the folloing shall e considered and adhered to here applicale: •
•
•
Page 2
ontin$o$s %onitoring for %erc$r vapo$r shall e carried o$t hile the or' is eing $nderta'en and forced etraction ventilation sste% $sed here applicale to red$ce %erc$r vapo$r. Personnel re%oving the sl$dge %an$all shall e provided ith positive flo air %as's and f$ll face shields if the ris' level arrants this level of protection. All are s'in that %a co%e into contact ith the sl$dge or conta%inated %etal s$rfaces shall e covered and protected. Printed 19/04/11 PR-1515 – Onsite Mercury Management Procedure
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•
•
•
•
•
•
Page 25
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"ootear shall e safet r$er oots as a %ini%$% efore loading into aste dr$%s or a vac$$% tan'er the sl$dge shall e spraed ith a deconta%inant che%ical to red$ce the %erc$r vapo$r released. "$ll deconta%ination incl$ding disposal / cleaning of all PPE shall e re@$ired for all personnel involved ith the sl$dge re%oval ithin a confined space. Refer to 7ection ,.>.for sl$dge aste handling and re%oval. efore transporting dr$%s containing %erc$r aste the ha$lage contractor shall e advised on the dangers and provided ith details of actions to e ta'en in the event of a spillage. 8aste dr$%s shall e loaded in a vertical orientation and sec$red to restrict an %ove%ent. The Do$rne plan for the %ove%ent of %erc$r aste sho$ld e notified to the R+P as a haardo$s aste ship%ent.
PR-1515 – Onsite Mercury Management Procedure
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Appendi 1 – Personal Protection ,>uipment PP, ,ternal ,posure $g Level +mg(m<.
Respiratory
$and
oot
*ody
$g E#&#"5
*ot re@$ired
otton gloves
7afet oots
*o%e coverall
$g #&#"5 to E#&"5#
;alf face %as' ith %erc$r cartridge
*itrile r$er gloves
8et conditions r$er safet oot
!erc$r disposale coverall Ea%ple Tve Tpe
R,D 1
$g#&"5# to E1&"5#
#r conditions 7afet oots ;alf face %as' ith %erc$r cartridge
*itrile r$er gloves
8et conditions r$er safet oot #r conditions 7afet oots
!erc$r disposale coverall Ea%ple Tve Tpe
"$ll face %as' ith %erc$r cartridge
*itrile r$er gloves
8et conditions r$er safet oot #r conditions 7afet oots
!erc$r disposale coverall Ea%ple Tve Tpe
R,D "
$g F1&"5# R,D <
Page 2>
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uideline - PP, Con=ined 'pace ,ntry $g Level +mg(m<.
Respiratory
$and
oot
*ody
$g E#&#"5
;alf face %as' ith %erc$r cartridge
#r conditions otton gloves 8et conditions *itrile r$er gloves
8et conditions r$er safet oot #r conditions 7afet oots
*or%al disposale coverall
$g #&#"5 to E#&"5#
;alf face %as' ith %erc$r cartridge
*itrile r$er gloves
7afet r$er oots
!erc$r disposale coverall
"$ll face %as' ith %erc$r cartridge
*itrile r$er gloves
7afet r$er oots
!erc$r disposale coverall
Air s$pplied respirator ith %as'
*itrile r$er gloves
7afet r$er oots
he%ical s$it <Biton %aterial=
R,D 1
$g#&"5# to E1&"5# R,D "
$g F1&"5# R,D <
Changing Disposa;le Coverall and other PP, R,D 1 •
#a%age d$e to 8ear M Tear
•
onta%inated ith dirt /sl$dge.
R,D " •
+nce per da
•
#a%age d$e to 8ear M Tear
R,D < ( Con=ined 'pace •
+nce per ever rea'
•
#a%age d$e to 8ear M Tear
NOTE: Nitrile Ru''er 9loves "a&ety Ru''er Boots can 'e reused a&ter decontamination and %asin$(
Page 29
PR-1515 – Onsite Mercury Management Procedure
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Appendi " – ,posure and irst Aid ,posure Levels •
8;+ M 7hell +E& The +cc$pational ;ealth Epos$re &i%it <+E&= is c$rrentl #&#"5 mg(m< <8orld ;ealth +rganiation and 7;E&&=. f concentrations aove this val$e are %eas$red f$ll PPE needs to e $sed. Refer Appendi 1. elo this concentration the or' can contin$e as nor%al.
•
A; T&B The A%erican onference of overn%ental nd$strial ;gienists has assigned %erc$r vapo$r a threshold li%it val$e <T&B= 0.02? %g/%, as a T8A for a nor%al >ho$rs or'da and a 40-ho$rs or'ee' and considers %erc$r vapo$r an A4 s$stance <not classifiale as a h$%an carcinogen=.
•
+7;A PE& The c$rrent +cc$pational 7afet and ;ealth Ad%inistration <+7;A= per%issile epos$re li%it <PE&= for %erc$r vapo$r is 0.1 %g/%, of air as a ceiling li%it. A or'erQs epos$re to %erc$r vapo$r shall at no ti%e eceed this ceiling level.
•
*+7; RE& The *ational nstit$te for +cc$pational 7afet and ;ealth <*+7;= has estalished reco%%ended epos$re li%it <RE&= 0.0? %g/%, as a T8A for $p to a 10-ho$rs or'da and a 40-ho$rs or' ee'.
Rationale =or Limits The li%its are ased on the ris' of central nervo$s sste% da%age ee s'in and respirator tract irritation.
Mercury Contact ith the ')in •
•
•
•
*ot 'non to irritate to s'in Allergic reaction %a develop Ele%ental li@$id and vapo$r can e asored thro$gh the s'in and ill contri$te to overall asorption and toicit +rganic %erc$r can easil pass thro$gh the s'in and into the od
Mercury in the ,yes •
•
•
*ot 'non as a direct ee irritant ;igh concentrations of ele%ental %erc$r vapo$r can ca$se redness $rning and infla%%ation of the ees +rganic %erc$r can e asored eelids and %ove into lood strea%.
Prevention o= ,posure •
•
•
0rain e%ploees in proper e@$ip%ent and che%ical handling and proced$res. All e%ploees sho$ld e %ade aare of the high ris' areas in the facilit and the proced$res to co%at this ris'. La;el %erc$r-containing instr$%ents. !a'e s$re facilit has a %erc$r spill clean$p 'it. !a'e s$re staff are trained in proper clean$p proced$res. Clean spills immediately and treat soiled toels as a haardo$s aste. #o not place %erc$r-containing %aterials in iohaards aste receptacles. Page ,0
PR-1515 – Onsite Mercury Management Procedure
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ollo procedures hen cleaning or refilling %erc$r-containing instr$%ents
•
/OR4LOOR !%'0R2C0!O% CARD Mercury ,lement !denti=ier
;g
ound As
Bapo$rG &i@$idG 7olid
ound /here
Process E@$ip%ent and Pipeor' of as Process "acilities
,posure Category
;ighl Toic
Occupational $ealth ,posure Limit +O,L.
0.02? %g/%,
Primary Ris)s !a acc$%$late in the od <har%f$l in the long ter%=. !a ca$se har% to the $norn child. Toic inhalation <%a ca$se pne$%onia and/or %etal vapo$r fever=. Prod$ct is asored thro$gh the s'in. !a ca$se irritation to s'in ees and respirator sste%. Reacts violentl ith sodi$% potassi$% and lithi$% <al'ali %etals= and %a ca$se fire/eplosion. !erc$r for%s an eplosive co%ination ith a%%onia a%ines oalic acid and acetlene. 7everal %etals <gold silver copper inc and al$%ini$%= dissolve in %erc$r. Ber toic to a@$atic organis%s and har%f$l in the long ter%.
0oic Dangerous =or the ,nvironment
Prevention Measures Prevent contact ith al'ali %etals <for ea%ple sodi$% potassi$% and lithi$%= Respirator protectionG filter tpe AE;g/P,
ire ,tinguishing ( irst Aid !R, ( ,PLO'!O%
Poder foa% spra ater or caron dioide <+2= *ot infla%%ale and/or eplosive
!%$ALA0!O%
"resh air and rest appl artificial respiration if necessar. +tain %edical attention i%%ediatel and if possile sho pac'aging and/or lael and this card.
&i@$id tight clothing and gloves <$tl r$er neoprene or PB=
'4!% CO%0AC0
Re%ove conta%inated clothing and ash s' in ith plent of ater and soap. +tain %edical attention i%%ediatel and if possile sho pac'aging and/or lael and this card
o%ined ee and respirator protection
,3, CO%0AC0
Rinse $sing plent of ater <re%ove an contact lenses if possile=. et %edical attention if there are s%pto%s and if possile sho pac'aging and/or lael and this card
!%,'0!O%
f victi% is conscio$s allo victi% to rinse %o$th and after that let hi% drin' 2 glasses of ater. #+ *+T ind$ce vo%iting. +tain %edical attention i%%ediatel and if possile sho pac'aging and/or lael and this card
8hen $sing do not eat drin' or s%o'e
'torage
7torage inside a ell ventilates storage at floor level. 7eparated fro% all other prod$cts. eep container tightl closed
Cleaning up spillage 'peci=ic Ris)s 8
EBA)ATE 8AR** C+*E A*# *+T"F ELPERT large spills
Personal Protection 8
As %ini%$% respiratorsG f$ll face visor oots gloves and coveralls. Tpes of PPE dependant on etent or severit of spill
Cleaning 2p
Re%ove large spills in cons$ltation ith an epert. Ta'e $p s%all spills an asoring agent and collect in dr$%s/containers. 8ash aa the re%ains ith ater <prevent discharge of sco$ring ater into seer/s$rface ater=. Transport dr$%s/containers according to local r$les
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Appendi < – Contaminated /aste Management lo Chart
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Appendi – /or) loor !nstruction Card – Mercury /OR4LOOR !%'0R2C0!O% CARD Mercury
Primary Ris)s !a acc$%$late in the od <har%f$l in the long ter%=. !a ca$se har% to the $norn child. Toic inhalation <%a ca$se pne$%onia and/or %etal vapo$r fever=. Prod$ct is asored thro$gh the s'in. !a ca$se irritation to s'in ees and respirator sste%. Reacts violentl ith sodi$% potassi$% and lithi$% <al'ali %etals= and %a ca$se fire/eplosion. !erc$r for%s an eplosive co%ination ith a%%onia a%ines oalic acid and acetlene. 7everal %etals <gold silver copper inc and al$%ini$%= dissolve in %erc$r. Ber toic to a@$atic organis%s and har%f$l in the long ter%.
0oic and Dangerous to the ,nvironment Prevention Measures Prevent contact ith al'ali %etals <for ea%ple sodi$% potassi$% and lithi$%=
ire ,tinguishing ( irst Aid !R, ( ,PLO'!O%
Poder foa% spra ater or caron dioide <+2= *ot infla%%ale and/or eplosive
Respirator protectionG filter tpe AE;g/P,
!%$ALA0!O%
"resh air and rest appl artificial respiration if necessar. +tain %edical attention i%%ediatel and if possile sho pac'aging and/or lael and this card.
&i@$id tight clothing and gloves <$tl r$er neoprene or PB=
'4!% CO%0AC0
Re%ove conta%inated clothing and ash s'in ith plent of ater and soap. +tain %edical attention i%%ediatel and if possile sho pac'aging and/or lael and this card
o%ined ee and respirator protection
,3, CO%0AC0
Rinse $sing plent of ater <re%ove an contact lenses if possile=. et %edical attention if there are s%pto%s and if possile sho pac'aging and/or lael and this card
!%,'0!O%
f victi% is conscio$s allo victi% to rinse %o$th and after that let hi% drin' 2 glasses of ater. #+ *+T ind$ce vo%iting. +tain %edical attention i%%ediatel and if possile sho pac'aging and/or lael and this card
8hen $sing do not eat drin' or s%o'e
'torage
7tore inside and ventilate at floor level. 7eparated fro% all other prod$cts. eep container tightl sealed
Cleaning up spillage Large 'pill
Evac$ate area and contact 7pecialist o%pan
Personal Protection 8
"$ll face visor canister reg$lator or self contained reathing apparat$s and gloves and oots <$tl r$er neoprene or PB=.
Cleaning 2p
Re%ove large spills in cons$ltation ith an epert. Ta'e $p s%all spills an asoring agent and collect in dr$%s/containers. 8ash aa the re%ains ith ater <prevent discharge of sco$ring ater into seer/s$rface ater=. Transport dr$%s/containers according to local r$les
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Appendi 5 – 'ite and ,>uipment /arning 'ignage The folloing are ea%ples of 8arning 7ignage to e fo$nd at P#+ locations here the ris' of !erc$r is present.
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Appendi @ – Mercury 'pillage
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Appendi : – Decontamination o= O==line ,>uipment
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Appendi 9 – Decontamination o= Personnel
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Appendi B – A;;reviations A&ARP
As &o As Reasonal Practicale
37P
3o 7afet Plan
&P
&i@$id Petrole$% as
+E&
+cc$pational ;ealth Epos$re &i%it
PE
Polethlene
PP
Polproplene
PPE
Personal Protection E@$ip%ent
PT8
Per%it to 8or'
PB
Polvinl chloride
7;+
7afe ;andling of he%ical
Page 40
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Appendi 1# – Re=erence Material P#+ #oc$%ents ode of Practice P-114
!aintenance and ntegrit !anage%ent oP
7pecifications 7P-100?
;7E 7pecification - E%issions to At%osphere
7P-100
;7E 7pecification - A@$eo$s Effl$ents
7P-1009
;7ES7pecification 6 8aste !anage%ent
7P-1150
;7E 7pecification - *at$rall +cc$rring Radioactive !aterials <*+R!=
7P-12,0
!edical Ea%ination <this doc$%ent is $nder revie !7E/,=
7P-12,1
+cc$pational health <this doc$%ent is $nder revie !7E/,=
7P-20>5
7pecification for +nsite !erc$r !anage%ent
Proced$res PR-105,
as "reeing P$rging M &ea' Testing of Process E@$ip%ent <Ecl$ding Tan's=
PR-105
solation of Process E@$ip%ent
PR-1055
Preparation of 7tatic E@$ip%ent for nternal !aintenance and nspection
PR-1059
as "reeing and P$rging of Tan's
PR-10>2
Pipeline Pigging Proced$re
PR-114>
Entr in to a onfined 7pace
,ternal Documents #EP 50.10.>0.11
Page 41
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PR-1515 – Onsite Mercury Management Procedure
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Document ID
Document Type
Security
Discipline
Owner
Issue Date
Revision
PR-1515
Procedure
nrestricted
!ngineering and Operations
"unctional Operations Manager - OP
#pril $%11
$.%
This document is the property of Petroleum Development Oman, LLC. either the whole nor any part of this document may !e disclosed to others or reproduced, stored in a retr retrie ieva vall syst system em,, or tran transm smit itte ted d in any any form form !y any any mean means s "ele "elect ctro roni nic, c, mechanical, mechanical, repro#raphic recordin# or otherwise$ otherwise$ without without prior written written consent of the owner.
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Document Aut Authorisation
Authorised or !ssue – April "#11
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Revision $i $istory
The folloing is a rief s$%%ar of the 4 %ost recent revisions to this doc$%ent. doc$%ent. #etails of all revisions prior to these are held on file the iss$ing depart%ent. Revision %o& 2.0
Date
Author
'cope ( Remar)s
!ar-11
1.1
3$ne-10
R$d van or'hove Refer to Addend$% 1 for details of +2 +22R 2R / Roi Roin n changes *or%an )+P Roin *or%an Added Appendi Appendi 5 6 7ite 8arning 7ignage )+P
1.0
7ep-09
Roin *or%an )+P / R$d van or'hove +22R
Revieed corrected rationalised and $pdated
0
3$n-02
8. la$
*e Proced$re
iii iii Relat Related ed *usi *usine ness ss Proce Process sses es Code
*usiness Process +,P*M &#.
EP.52
!aintain and Ass$re "acili ilitie ties nt ntegrit
iv Related Related Corporat Corporate e Manage Managemen mentt rame rame /or) /or) +CM. +CM. Documents The related !" #oc$%ents #oc$%ents can e retrieved fro% the !" Business Control Portal .
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0A*L, O CO%0,%0' i #oc$%ent A$thorisation........................................................................ ................................... , ii Revision ;istor............................................ ......................................... .................................. 4 iii Related $siness Processes..................................................... ........................................ ...... 4 iv Related orporate !anage%ent "ra%e 8or' <!"= #oc$%ents.................................. ....... 4 1
ntrod$ction..............................................................................................................................5 1.1 ac'gro$nd...................................................... ......................................... ......................... 5 1.2 P$rpose................................................... ......................................... ................................. 5 #istri$tion/Target A$dience.................................................................. ................................ > 1., hanges to the #oc$%ent............................................... .................................... .............. > 1.4 7tep-+$t and Approval................................. ........................................ ............................. > 1.? A&ARP........................................................... ........................................ ............................ >
2 Roles and Responsiilities...................................... ...................................... .......................... 9 , !erc$r !anage%ent Plan........................................ ....................................... .................... 10 ,.1 dentification of the !erc$r Ris'...................................... ............................. ................. 10 ,.2 !erc$r Ris' #ataase.............................................. ........................................ .............. 11 ,., ;igh Ris' #ail Activities ........................................ ........................................ ................. 12 ,.4 PPE and E@$ip%ent for !erc$r !anage%ent............................ ........................ ........... 12 ,.? ;a!at Tea%............................................ ........................................ .............................. 12 ,. !erc$r <onta%inated= 7pills....................... ......................................... ........................1, ,.5 !erc$r ontain%ent &adon Area...................................................... ......................... 1, ,.> ;andling onta%inated 8aste....................... ........................................ ......................... 1, ,.>.1 &i@$id 8aste..............................................................................................................1, ,.>.2 7olid 8aste................................................................................................................14 ,.>., #isposale 8aste......................................................................................................14 ,.>.4 Recclale 8aste......................................................................................................14 ,.9 !aterial / E@$ip%ent sent for 7crap or Repair........................................... .....................14 ,.10 Personnel #econta%ination.................................................................... ....................... 1? 4 !erc$r !anage%ent Proced$res................................................. ....................................... 15 4.1 eneral................................ ........................................ ......................................... ........... 15 4.1.1 Eli%ination and ontrol of Ris's................................................................................15 4.1.2 !erc$r Bapo$r !eas$re%ents.................................................................................15 4.1., Provision for ontain%ent - Ecl$sion Cones............................................................1> 4.2 )se of #econta%ination he%icals.......................................... ......................................1> 4., #econta%ination !ethods....................................................................... ........................ 19 4.,.1 rea'ing ontain%ent <flanges= and +pening to At%osphere................................. ..19 4.,.2 !an$al 7pra.............................................................................................................20 4.,., !echanical / 7tea% nDection.....................................................................................21 4.,.4 ontin$o$s irc$lation...............................................................................................22 Page ?
PR-1515 – Onsite Mercury Management Procedure
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4.,.? onfined 7pace Bis$al nspection and Entr.............................................................2, 4.4 ;ot 8or'ing on !erc$r onta%inated 7$rfaces......................................... .................. 24 4.? Pigging +perations.......................................... ......................................... ....................... 2? 4.?.1 eneral......................................................................................................................2? 4.?.2 Pigging.......................................................................................................................2? 4. 7l$dge Re%oval........................ ......................................... .............................. ............... 2 Appendi 1 6 Personal Protection E@$ip%ent....................................... ............................. ..... 2> Appendi 2 6 Epos$re and "irst Aid................................... ....................................... ............ ,0 Appendi , 6 onta%inated 8aste !anage%ent "lo hart.......................... ......................,2 Appendi 4 6 8or' "loor nstr$ction ard 6 !erc$r.......................................... ................... ,, Appendi ? 6 7ite and E@$ip%ent 8arning 7ignage............................................... ...............,4 Appendi 6 !erc$r 7pillage ...................................... ............................... ......................... ,5 Appendi 5 6 #econta%ination of +ffline E@$ip%ent............................ .................................,> Appendi > 6 #econta%ination of Personnel.................................... ........................ ..............,9 Appendi 9 6 Areviations...................................................... ....................... ....................... 40 Appendi 10 6 Reference !aterial...................................... ........................................ ............ 41 Addend$% 1 6 hanges at Revision 2.0...................................... ................................. .......... 42
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!ntroduction /AR%!% M,RC2R3 !' A 4%O/% %,2RO0O!% 0$A0 !' ,0R,M,L3 0O!C ,6,% !% 'MALL AMO2%0'& !0 D!R,C0L3 A,C0' 0$, C,%0RAL %,R6O2' A%D R,%AL '3'0,M'7 CA2'!% D,6,LOPM,%0AL D,LA3'7 MO0OR A%D *RA!% PRO*L,M' L!4, 0$O', A''OC!A0,D /!0$ A20!'M& M,RC2R3 ,!'0' !% 0$R,, ORM'8 !%ORA%!C M,0ALL!C M,RC2R37 !%ORA%!C M,RC2R3 COMPO2%D' A%D ORA%!C M,RC2R3 COMPO2%D'& OR MOR, D,0A!L' O% M,RC2R3 R,,R 0O 'P-"#9:- 'P,C!!CA0!O% OR O%'!0, M,RC2R3 MA%A,M,%0
1&1
*ac)ground The entral +%an gas reservoirs are prod$cing %erc$r ith process facilities <7RPP 7*P and P= inlet concentrations presentl varing eteen 0.04 to 0.0 %g/*% ,. <%illigra%/ *or%al % ,= hich co$ld over the lifeti%e of the facilit co$ld rise to several h$ndred %g/*% ,. Additionall concentrations of %erc$r have een fo$nd in the non-associated gas processed at Fial P $t to date these are ver lo level. 8ith nat$ral gas so%e %erc$r is prod$ced the @$antit dependent on the reservoir. n addition to %etallic %erc$r the gas %a also contain s%all @$antities of %erc$r salts and organic %erc$r. *or%all the %erc$r re%ains for the %ost part in the processing installations and interconnecting pipelines. 8hen %aintenance or operations or' is carried o$t the %erc$r is / can e lierated as in or on: -
Bapo$r fro% steel alls of vessels pipelines pig la$nchers and receiversG
-
As a li@$id in cold parts of the processG
-
n the gas and on glcol filtersG
-
As a sl$dgeG
-
+n pieces of the installation itselfG
-
n de%istersG
-
n %erc$r re%oval edsG
-
As a %it$re in condensate ater glcol etc.
!MPOR0A%0 %O0,8 )nless de%onstrated clean of %erc$r all processing facilities hich have een in contact ith a %erc$r containing strea% ill e considered conta%inated and all or' cond$cted in accordance ith this proced$re.
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Purpose The p$rpose of this proced$re is to ens$re that all personnel P#+ or contract engaged in %aintenance repair inspection and %odification activities at facilities here the ris' of epos$re to %erc$r co$ld e possile are s$ital infor%ed of the preca$tions and actions to e ta'en to red$ce or %ini%ise that ris'. The ris's are nor%all enco$ntered d$ring intr$sive activities i.e. %aintenance internal inspection %odifications etc.
Page 5
PR-1515 – Onsite Mercury Management Procedure
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Distri;ution(0arget Audience This proced$re is intended for $se all +perations and !aintenance personnel and ontractors or'ing on ehalf of P#+ on facilities here %erc$r conta%ination is or %ae present d$ring nor%al operations.
1&<
Changes to the Document This doc$%ent shall e s$Dect to revie the #oc$%ent +ner / #oc$%ent $stodian ever , ears fro% the last date of iss$e. At an ti%e d$ring this period the doc$%ent H)sersI %a re@$est the contents to e revieed and revised. Re@$ests for revie and revision shall e %ade in riting to the #oc$%ent $stodian $sing the H)ser "eedac' PageI or sending a H!ar'ed )pI cop of the doc$%ent. The decision to revie or revise the doc$%ent shall rest ith the "$nctional Prod$ction Tea% &eader )+P the +ner.
1&
'tep-Out and Approval This #oc$%ent is !andator. 7tep-+$t shall e in accordance ith PR-1001e – Operations Procedure Temporary Variance .
1&5
ALARP A&ARP is the acron% for HAs &o As Reasonal PracticaleI hich si%plified %eans Hred$cing the ris' to a level at hich the cost and effort <ti%e and tro$le= of f$rther ris' red$ction are grossl disproportionate to the ris' red$ction achievedI. ull Compliance to PDO 'tandards and Procedures is a )ey element in achieving ALARP .
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Roles and Responsi;ilities
7pecialist 7$pervisor <!erc$r "ocal Point=
•
•
•
•
#eliver Tea% &eader
•
•
•
•
Prod$ction oordinator
•
•
•
Prod$ction 7$pervisor
•
•
•
Area A$thorit
•
•
•
;a!at Tea%
To carro$t a$dits on %erc$r %apping and dataase To chec' that proced$res $sed or developed ontractors for the or' are in co%pliance ith P#+ !erc$r 7pecification and Proced$re To advise on develop%ents and i%prove%ents to !erc$r !anage%ent ithin the nd$str and i%ple%ent here agreed To pro%ote %erc$r aareness ithin their area To ens$re co%pliance to !erc$r !anage%ent Proced$re ithin their area To ens$re all cases of non-co%pliance are reported and investigated To provide assistance to the 7pecialist 7$pervisor hen cond$cting a$dits To ens$re co%pliance to !erc$r !anage%ent Proced$re ithin their area To ens$re that %erc$r ris's are highlighted d$ring Tea% riefings for or' here %erc$r is s$spected or 'non to e present To ens$re !erc$r !ap and #ataase are %aintained c$rrent To $nderta'e site inspections and chec' that deconta%ination and ecl$sion ones are identified To ens$re co%pliance to !erc$r !anage%ent Proced$re To ens$re all personnel are aare of deconta%ination and ecl$sion ones that are in force d$ring or' To ens$re that %erc$r proced$res are attached to PT8 for all or' that ill e $nderta'en in ris' areas To %aintain aareness of %erc$r ris' to all personnel entering the facilit To ens$re that %erc$r testing is $nderta'en prior to or d$ring the co$rse of or' here %erc$r is or s$spected of eing present
•
To ens$re co%pliance to !erc$r !anage%ent Proced$re
•
To test for presence of %erc$r hen contain%ent is ro'en
•
•
Page 9
To advise on all %atters relating to !erc$r !anage%ent d$ring sh$tdons and %aintenance operations
To provide assistance hen spills occ$r and ens$re that the incidents are reported To cond$ct onsite %onitoring of the or' site to ens$re %erc$r levels are recorded and to provide arning to personnel hen levels rise or eceed the safe li%its
PR-1515 – Onsite Mercury Management Procedure
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<
Mercury Management Plan Prior to an or' eing carried o$t on a facilit here there is or co$ld e %erc$r conta%ination a !erc$r !anage%ent Plan shall e p$t in place. The plan ill provide detailed proced$res and preca$tionar steps to e ta'en for nor%al operations planned sh$tdons and $nplanned events or incidences. The !erc$r !anage%ent Plan sho$ld provide details of: •
Ris' !anage%ent in the event of a %erc$r incident
•
;igh ris' dail activities
•
!erc$r reporting and %aintenance of a !erc$r Register
•
&ocation of personal protective e@$ip%ent for $se ith !erc$r
•
&ocation and availailit of !erc$r 7pill and lean$p e@$ip%ent
•
&ocation and stat$s of !erc$r !onitoring e@$ip%ent
•
E@$ip%ent deconta%ination
•
;andling of conta%inated aste s$ch as:
•
onta%inated aste containers
onta%inated PPE
onta%inated 7l$dge / Resid$e <incl$ding r$st scale=
8aste transportation
Personnel #econta%ination
The !erc$r !anage%ent Plan sho$ld also contain detailed proced$res to cover: •
)se of deconta%ination che%icals
•
#econta%ination %ethods for:
!onitoring and opening of flanges and rea'ing contain%ent
Bessel internals
onfined space vis$al inspection and entr
•
;ot or'ing on conta%inated s$rfaces
•
Pigging
•
7l$dge re%oval
NOTE: Provisions in te !etod "tatement must ensure #$ %aste as a result &rom cleanin$ is as little as possi'le to prevent costly disposal costs( Vessel cleanin$ %ill 'e assessed ta)in$ into consideration type o& repair and * or inspection re+uired(
<&1
!denti=ication o= the Mercury Ris) +n facilities 'non to have or s$spected of having %erc$r conta%ination in the process strea%s a %ap of the facilit ith 'non / predicted epos$re levels shall e prepared and %aintained the Asset ;older <e.g. %ar'ed $p P"7=. This can e achieved in the folloing %anner:
Page 10
a.
;istorical #ata - !apping the %erc$r conta%ination d$ring a previo$s sh$tdon or hen intr$sive %aintenance has een $nderta'en
.
Predictive #ata 6 +taining %erc$r conta%ination data fro% a facilit that is operating $nder si%ilar conditions and $sing this as a Hench%ar'I OR $sing PR-1515 – Onsite Mercury Management Procedure
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facilit operating para%eters and data fro% the ind$str to predict possile conta%ination levels and Hhot spotsI. The folloing si%plified flo diagra% <o$rtes *o-;eat Reso$rces= ill$strates a possile etent of %erc$r conta%ination thro$gho$t the process path in a gas treat%ent and eport facilit.
as M ondensate 8aste 8ater
<1 -4N=
<100N=
7eparator 7torage
<? -10N=
"$el as
<90N= <0.01
&P o%pression
o%pression
<90N=
0.01
A%ine 7ste%
A%ine
!R)Is
<?0-50N=
<0.01N= <20-,0N=
<?-10N=
*& Eport
<20-,0N=
!ol 7ieve /
lcol
Eport
TL-&T7 M ;eat Echanger
lcol )nit <20-,0N=
As can e seen the conta%ination is red$ced thro$gho$t the process the concentration of %erc$r eing left ehind dependant on the process ele%ent i.e. te%perat$re press$re and tpe of phase. t can also e seen that conta%ination is transferred to interfacing %edi$%s s$ch as a%ine and glcol. Regardless of the n$%er of processes there ill e conta%ination at the o$tlet of the process. NOTE: Te level o& contamination %ill 'e dependent on te level o& mercury in te %ell &luids enterin$ te process( )sing the aove ill$stration as a g$ide all points of the process can e tagged and %eas$red to provide a %ap of ris' areas.
<&"
Mercury Ris) Data;ase A %erc$r ris' dataase ased on the findings of the !erc$r Ris' !ap detailed in ,.1 %$st e %aintained the Asset ;older ho ill 'eep $p-to-date records of %erc$r conta%ination and its location. A dataase shall e devised for each facilit and shall e $pdated henever or' is $nderta'en that re@$ires Hrea'ingI the press$re envelope and presenting a ris' of %erc$r epos$re. !onitoring points for the dataase can e estalished $sing the !erc$r Ris' !ap. 8ith reference to Appendi 1 6 Personal Protection E@$ip%ent to ens$re consistenc the sa%e dentification riteria shall e $sed hen identifing %erc$r ris' levels in the facilit / plant. reen shall e considered as safe and no %erc$r aove the loer li%it of J0.02? %g/*% , epected. Red shall e considered as a %erc$r ris' ith %erc$r K0.02? %g/*% , epected or li'el to e fo$nd. Additionall Red shall e f$rther div ided into &evels 1 2 and , and shall align ith Appendi 1. The dataase shall e str$ct$red to reflect this philosoph.
Page 11
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$igh Ris) Daily Activities +n facilities or e@$ip%ent here %erc$r conta%ination is possile or s$spected all nor%al activities $nderta'en +perations and !aintenance that shall e considered Hhigh ris'I ith regards to epos$re shall e identified i.e. sa%pling li@$ids to open t$ndish venting or or'ing aro$nd open vents etc. These activities shall onl e alloed if the correct PPE <refer to Appendi 1= is orn and the area / e@$ip%ent is inspected and tested safe the ;a!at Tea%. These activities shall e entered in the %erc$r ris' dataase. The dataase shall e $pdated henever the activit is $nderta'en and the data %aintained c$rrent.
<&
PP, and ,>uipment =or Mercury Management At facilities that are identified as having a %erc$r ris' PPE specific for %erc$r epos$re and e@$ip%ent and tools re@$ired for %erc$r deconta%ination shall e availale. The PPE and e@$ip%ent shall e $nder the control of the ;a!at Tea% &eader and co%prise $t not e li%ited to: •
Respirators
•
"ace protection
•
overalls
•
loves and oots
IMPORTANT - !ercury can adere to clotin$ and &oot%ear, %ic may lead to continuous eposure( Tere&ore clotin$ and &oot%ear needs to 'e manu&actured &rom material %ic is non-adesive &or mercury( Refer to Appendi 1 for details of PPE re@$ired for tpe of or' $nderta'en and possile li%its of epos$re.
<&5
$a?Mat 0eam 8herever or henever or' is eing $nderta'en at a facilit here there is a possiilit or a 'non ris' of a %erc$r release there shall e a ;a!at Tea% present. The ;a!at tea% shall co%prise to persons each in correct PPE and e@$ipped ith a %erc$r vapo$r %onitor and ac' pac' spra charged ith a deconta%inant che%ical. +ne of the tea% shall e responsile for %onitoring %erc$r vapo$r and the second %e%er for ad%inistering a controlled deconta%inant spra if re@$ired. The e%edded ill$stration shos a tpical ;a!at Tea% at a or' site.
*+ 8+R in a !erc$r onta%inated Area can egin itho$t a ;a!at Tea% ho shall e present at vessel opening flange rea'ing spills c$tting etc. An e@$ip%ent or scrap leaving the site to e sent for repair or discarded shall e %onitored the tea% and tagged ith details of the level of %erc$r fo$nd.
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PR-1515 – Onsite Mercury Management Procedure
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8here possile all e@$ip%ent sho$ld e deconta%inated E"+RE leaving the site. Refer section 2.9.
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Mercury +Contaminated. 'pills t is reco%%ended that facilities here it is 'non %erc$r conta%ination eists sho$ld e provided ith %erc$r spill e@$ip%ent. enerall the e@$ip%ent shall co%prise of PPE %erc$r vapo$r tester and spra e@$ip%ent containing a deconta%inant che%ical to address and treat the spill. P$re li@$id %erc$r <as in silver colo$red droplets= can easil e re%oved an ind$strial vac$$% cleaner e.g.TigerBac that is capale of handling li@$ids. 7%aller spills can e handled $sing a his' on pan sponge or a pipette. Reference the "lochart in Appendi for the reco%%ended approach to !erc$r 7pill !anage%ent.
<&:
Mercury Containment Laydon Area Ever facilit that has a ris' of %erc$r conta%ination shall estalish a contain%ent area here %erc$r aste and conta%inated e@$ip%ent / %aterials can e stored prior to treat%ent or shipping to a long t er% storage location. The contain%ent ladon area shall e controlled and %a have facilities to HcleanI conta%inated e@$ip%ent and process so%e aste. The conta%inated ladon area shall have controlled access and e s$Dect to periodic %onitoring. All %onitoring res$lts shall e recorded in the H!erc$r Ris' #ataaseI.
<&9
$andling Contaminated /aste Proced$res and g$idelines re@$ire eing in-place hich shall address the handling of conta%inated aste. Refer to "P-100. #"E "peci&ication - /aste !ana$ement
Li>uid /aste &i@$id aste i.e. fl$shing fro% vessels or draining fro% deconta%ination shall e re%oved and stored in s$itale containers $ntil it has een treated or re%oved fro% site. &arge @$antities of li@$id %a e p$%ped or s$ctioned in to a vac$$% tan'er. 7%aller @$antities %a e decanted or p$%ped to dr$%s i.e. 4? gallons %etal or plastic tpes. The dr$%s shall have a li@$id t ight seal hen filled and e %ar'ed clearl to indicate their content. An spillages o$tside of the contain%ent shall e spraed ith a deconta%inant che%ical and %onitored for %erc$r vapo$r. Bac$$% tan'er shall e cleaned internall $sing a che%ical ash and eternall $sing a spra once all aste li@$ids have een discharged to the treat%ent area. *o vac$$% tan'er shall e alloed to leave the contain%ent area $ntil it has een thoro$ghl chec'ed for %erc$r conta%ination. 7%aller dr$%s once e%ptied shall e treated in a si%ilar %anner and cleaned internall and eternall efore eing re-$sed. &arge @$antities of li@$id aste shall e treated che%icall <as advised specialist co%pan= to concentrate the %erc$r aste fro% the li@$id.
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'olid /aste 7olid aste s$ch as sl$dge and r$st scale shall e re%oved and stored in containers or dr$%s as ill$strated elo:
Polthene sheeting sho$ld e $sed to cover the sl$dge and an air t ight lid and sealing arrange%ent fitted. The contents and nat$re of the ris' shall e clearl stated on the o$tside of the dr$%. f re@$ired d$e to spillage of the content d$ring loading the o$tside of the dr$%s shall e spraed ith a deconta%inant che%ical. The dr$%s shall e stored in a contain%ent area $ntil re%oval for disposal.
Disposa;le /aste n a si%ilar %anner to solid aste disposale aste shall e stored in sealed dr$%s. #isposale aste shall e that hich ill not e treated $t disposed of in accordance ith legislative directives. The contents and nat$re of the ris' shall e clearl stated on the o$tside of the dr$%.
Recycla;le /aste 7o%e ite%s eposed to %erc$r %a e re-$sed i.e. PPE li'e oots nitrile r$er gloves and face %as's. This ill e stored in containers and then sent for processing and cleaning.
<&B
Material ( ,>uipment sent =or 'crap or Repair 7trict controls shall e eercised over all %aterial and e@$ip%ent that is %oved off site for scrap or repair. The folloing shall e folloed: •
•
•
Page 14
All e@$ip%ent or %aterial that leaves the designated contain%ent areas shall e tested for %erc$r and deconta%inated accordingl. All ite%s that are to e sent for repair or scrap shall e deconta%inated eternall if %erc$r conta%ination is identified. te%s s$ch as valves pipe cooler $ndles etc shall have open ends and identified lea' paths covered in polthene or si%ilar to %iti gate spillage.
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&aelling indicating the %erc$r ris' level i.e. reen Red 1 2 or , for those ite%s here conta%ination has een identified shall e attached to all ite%s shipped off site.
The transporters of the e@$ip%ent or scrap shall e advised of the %erc$r haard and an preca$tions / actions that re@$ire e oserving / carring o$t in the event of an incident d$ring transit. The repairer if a , rd Part shall e provided ith an infor%ation regarding the ite% eing shipped and preca$tions / proced$res to e folloed for deconta%ination d$ring disasse%l. NOTE: PO sall ensure tat rd Party contractors ave procedures in place &or dealin$ %it mercury contamination as part o& te vettin$ process(
<&1#
Personnel Decontamination #econta%ination shall e $sed for personnel eposed to %erc$r. #econta%ination %a e as si%ple as a foot ash tra and changing area to a f$ll che%ical ash don. NOTE: 2ll tools and special e+uipment tat as 'een used on site in te mercury contamination environment must 'e decontaminated as %ell The proced$re for a f$ll deconta%ination shall co%prise of the folloing steps:
Page 1?
1.
8hen leaving or' area ash oots and glove at foot ath station
2.
8al' thro$gh dedicated patha to personnel deconta%ination station
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,.
Enter 8et #econta%ination 7tation and get stand- Technician to spra #econta%ination che%ical on conta%inated PPE folloed a ater ash
4.
&eave the 8et and go to #r #econta%ination )nitG Technician ill assist in the re%oval of all orn PPE
?.
8hen all PPE has een re%oved leave the #r #econta%ination 7tation
.
The #r #econta%ination )nit Technician ill dispose of the conta%inated s$it into aste dr$% provided
PR-1515 – Onsite Mercury Management Procedure
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Mercury Management Procedures
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eneral
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,limination and Control o= Ris)s Epos$re to %erc$r vapo$r shall e li%ited to A&ARP <refer to "ection 1(3 =. !MPOR0A%0 %O0,: All ris' assess%ents shall e carried o$t $sing the standard PO Ris) 2ssessment 4orm( Refer GU 273: !" G#i$eline % Pe&'it to (o&k )ob !afety Plans The folloing needs to e considered in order of priorit d$ring or' planning: 1.
he%ical treat%ent. 6 onsideration shall e given to the $se of che%icals to clean and pre-treat the e@$ip%ent prior to or' eing $nderta'en.
2.
nstall forced ventilation. - 8ith forced ventilation safe levels of %erc$r vapo$r in air %a e achieved itho$t the need for PPE. This co$ld appl for or' inside vessels and confined spaces providing all other ris's i.e. hdrocarons are assessed and %itigated
,.
7eparate the %erc$r containing installation <open vessels and e@$ip%ent= fro% the or'force erecting arriers aro$nd the% ith arning signs.
f option 1 and 2 are not possile $se applicale PPE <hen %erc$r levels are aove 0.02? %g/*%,=. Refer Appendi 1.
Mercury 6apour Measurements efore and d$ring or' on installations s$spected of containing %erc$r %erc$r vapo$r %eas$re%ents shall e eec$ted to chec' if %erc$r vapo$r is present. P#+ $ses the 3ero%e 40? and *ippon E! %erc$r vapo$r analer. Re@$ire%ents for %erc$r vapo$r %eas$re%ents are: •
•
•
the need to e eec$ted a person trained and fa%iliar ith the test e@$ip%entG the e@$ip%ent needs to e calirated once earl to the g$aranteed factor specificationsG The %eas$re%ents shall e eec$ted in the reathing one. The res$lts of these %eas$re%ents deter%ine hether PPE is necessar
The +cc$pational ;ealth Epos$re &i%it <+E&= is c$rrentl 0.02? %g/*%, <8orld ;ealth +rganiation and 7;E&&=. f concentrations aove this val$e are %eas$red f$ll PPE needs to e $sed. Refer Appendi 1. elo this concentration the or' can contin$e as nor%al. f %ore than 1.2?0 %g/*%, is %eas$red f$ll face %as' ith %erc$r cartridges reathing apparat$s ith Biton <or other s$itale %aterial= s$its shall e orn or if necessar Biton s$it ith eternal air s$ppl. !eas$re%ents shall e ta'en at reg$lar intervals and ta'e acco$nt of changing cli%atic conditions i.e. ind te%perat$re and h$%idit.
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Petroleum Development Oman LLC !erc$r vapo$r %eas$re%ents shall e re@$ired hen: •
•
Bessels e@$ip%ent and pipeor' etc are opened $p !aintenance elding grinding c$tting conta%ination is 'non or s$spected
carried
o$t
•
onfined space entr is re@$ired
•
)ns$re of the stat$s of an open vessel etc.
•
irc$%stances $nder hich the or' is carried o$t change
here
%erc$r
The folloing strateg for %eas$ring %erc$r vapo$rs is reco%%ended: 1.
7tart ith a aseline %eas$re%ent prior to the start of the or'
2.
arr o$t a second %eas$re%ent hen there is a potential for epos$re
,.
f the res$lt is elo 0.02? %g/*%, start the or' and repeat %eas$re%ent as necessar
4.
f the res$lt is aove 0.02? %g/*%, ta'e control %eas$res repeat %eas$re%ents reg$larl
?.
&og the res$lts on a sheet attached to the PT8.
Provision =or Containment - ,clusion ones #$e to the nat$re of %erc$r and its ailit to travel over great distances in li@$id for% contain%ent of the or' area shall e re@$ired. The Ecl$sion Cone estalished shall e large eno$gh to prevent conta%ination of the o$tside areas $t s%all eno$gh to e easil %onitored. 8ithin an Ecl$sion Cone personnel ill e re@$ired to ear appropriate PPE hich %a incl$de Hspecialist protective coveralls and respiratorsI. The deconta%ination station<s= %$st e located at the entr points Hto and fro%I the Ecl$sion Cone. Entr and eit fro% this one shall e strictl controlled and all personnel shall e deconta%inated on eiting.
&"
2se o= Decontamination Chemicals "or sh$tdons and %$ltiple rea's in to the contain%ent envelope to re%ove replace or repair e@$ip%ent and pipeor' the $se of specialist che%icals is reco%%ended to assist in deconta%ination and control %erc$r vapo$rs released. he%icals %a e s$pplied and ad%inistered a , rd part specialist contractor or s$pplied for application P#+ staff. 8hichever ro$te of s$ppl and $se is selected all or' shall e controlled $nder the PT8 sste% and ith reference to the 7;+ card for that che%ical and / or the !7#7 <!aterial 7afet #ata 7heet=. Prior to an che%icals eing $sed P#+ s$fficient training shall e given the che%icals s$pplier to ens$re that staff is ale to safel $nderta'e: •
7torage
•
orrect selection of PPE
•
orrect %iing for all applications
•
Page 1>
Application according to re@$ire%ent
•
ollection and disposal
•
E%ergenc spill clean $p
PR-1515 – Onsite Mercury Management Procedure
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Decontamination Methods Bessels 'non to e or s$spected of eing conta%inated ith %erc$r shall e deconta%inated efore entr. NOTE: 5t is essential to minimise 6li+uid7 %aste production 'ecause o& di&&icult disposal procedures and very i$ associated costs( #ifferent %ethods of deconta%ination can e $sed and the correct %ethod depends on: •
•
•
Reason for %anned entr i.e. is it practicale for inspectors to or' in f$ll %erc$r PPE A%o$nt of %erc$r / sl$dge epected in the sste% 7ste% dna%ics and availale facilities <7tea% hot nitrogen ro$te to flare sie of the vessel etc=
#econta%ination <for %erc$r= is perfor%ed after the sste%s / e@$ip%ent has een isolated drained gas freed and p$rged in accordance ith estalished proced$res alread in force. PR-1083 6
5solation o& Process E+uipment
PR-1088 6
Preparation o& "tatic E+uipment &or 5nternal !aintenance and 5nspection
PR-108 -
9as 4reein$, Pur$in$ ;ea) Testin$ o& Process E+uipment 6Ecludin$ Tan)s7
PR-108. -
9as 4reein$ and Pur$in$ o& Tan)s
EP 80(10(<0(11-
en. leaning of E@$ip%ent
NOTE: "pecial attention must 'e $iven to condensate tat can remain 'eind on trays a&ter drainin$( Tis could 'e removed 'y &lusin$ %it %ater &rom 'ottom to top( Te stren$t o& te column and its &oundation sall 'e cec)ed to ensure tat ecessive loads are not applied(
*rea)ing Containment +=langes. and Opening to Atmosphere Prior to rea'ing flanges re%oving valves singing spectacle linds or rea'ing contain%ent etc. %onitoring and deconta%ination shall e carried o$t. The spra is applied directl on to the area to co%ine ith %erc$r vapo$r or ele%ental %erc$r to for% a sol$tion hich ill e collected in a receptacle positioned $nder the rea'. This tas' ill e the responsiilit of a ;a!at Tea% <refer to 2.?=. 1.
The position of the rea' <flange valve etc.= shall e identified and the area prepared. A s$itale container ill e placed $nder here the rea' is to e %ade and provision %ade to contain an spills <polthene covers etc.=
2.
The ;a!at Tea% shall %onitor and record the ase reading efore an rea's are %ade.
,.
The olts / n$ts shall e slac'ened off starting at the top and or'ing to the otto%. Appropriate PPE as indicated on the Ris' !ap shall e orn all operatives for this tas'.
4.
The area aro$nd the rea' shall e %onitored again ith the olts / n$ts slac'ed off. f the reading on the %onitor is aove the +E& <0.02? %g/%,= a deconta%inant spra shall e applied to the area as shon elo.
Page 19
PR-1515 – Onsite Mercury Management Procedure
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?. The deconta%inant ill e given ti%e to or' <approi%atel 10 6 1? %ins= and the area %onitored again and recorded. The olts / n$ts can e re%oved and placed in a container for cleaning / deconta%ination and the flanges ro'en or the valve re%oved etc. NOTE: 4or lar$e pipe or &ittin$s suita'le li&tin$ e+uipment may re+uire to 'e used tis must 'e monitored and decontaminated i& re+uired a&ter use( . All pipe and / or fittings re%oved shall e agged or rapped if conta%inated and sent to the prescried area for cleaning. The ends of the fied pipe shall e either rapped or lan'ed to prevent cross-conta%ination. 5. Attach a colo$r coded Tag to identif levels of ;g detected: $g Level +mg(%m <. E#&#"5 R,D 1 R,D " R,D <
#&#"5 to E#&"5# #&"5# to E1&"5# F1&"5#
Manual 'pray
8here the vessel is s%all deconta%ination can e $nderta'en $sing a %an$all operated spra as follos:
Page 20
1.
+pen %ana access oserving all preca$tions re@$ired for confined space entr and gas testing.
2.
Ta'e and record the ase reading of the %erc$r vapo$r in the vicinit of the %ana <;a!at Tea%=. PR-1515 – Onsite Mercury Management Procedure
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,.
f deconta%ination is re@$ired %as' off the %ana ith clear polthene sheeting
4.
!a'e a penetration in the polthene sheeting and direct the spra aro$nd the vessel internals thro$gh the penetration.
?.
Allo ti%e for deconta%inant to act <10 6 1? %in$tes= and ta'e and record another %erc$r vapo$r reading.
.
Repeat steps 4 M ? <if re@$ired= $ntil conditions ithin the vessel are elo 0.02? %g/*%, .
5.
#rain li@$ids fro% the otto% of the vessel to a closed drain sste% or toic aste storage dr$%s / vac$$% tan'er.
8or' can no e $nderta'en earing the appropriate PPE. !erc$r vapo$r reading shall e ta'en at reg$lar intervals <specialist s$pervisor to advise=. /or) shall ;e stopped and decontamination repeated i= levels o= mercury vapour increase a;ove sa=e levels +#&#"5 mg(%m< ..
Mechanical ( 'team !nGection
+n larger %ore co%ple vessels s$ch as col$%ns i.e. glcol contactors stailisers etc. deconta%ination %a re@$ire a %echanicall p$%ped or stea% inDection sste% to e $sed. Refer to EP 80(10(<0(11-9en( Cleanin$ o& E+uipment .
Page 21
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The p$%ping sste% sho$ld $tilise a high point for inDection of the spra here as the stea% inDection sho$ld e at a lo point to allo for the stea% vapo$r <ith the deconta%inant= to rise $p thro$gh the vessel and internal fittings venting an vapo$r re%aining to the flare or vent sste%. 1.
+serve all re@$ire%ents for confined space entr and gas testing.
2.
onnect te%porar fittings to eisting pipeor' or install te%porar spools if re@$ired. O;serve all precautions regarding mercury contamination hen underta)ing this or).
,.
Ta'e and record the ase reading of the %erc$r vapo$r in the vessel at s$itale access points on the vessel <;a!at Tea%=.
4.
7tart the deconta%ination process. Allo s$fficient ti%e for the deconta%ination che%ical to contact the vessel internals and %a'e its a don to the otto% of the vessel for re%oval.
?.
7top the spra / stea% inDection process and ta'e / record vapo$r readings at sa%e points as ase readings.
.
Repeat steps , M 4 <if re@$ired= $ntil conditions ithin the vessel are elo 0.02? %g/*%,
5.
#rain li@$ids fro% the otto% of the vessel to the closed drain sste% or toic aste storage dr$%s / vac$$% tan'er.
8or' can no e $nderta'en earing the appropriate PPE. !erc$r vapo$r reading shall e ta'en at reg$lar intervals <specialist s$pervisor to advise=. /or) shall ;e stopped and decontamination repeated i= levels o= mercury vapour increase a;ove sa=e levels +#&#"5 mg(%m< ..
Continuous Circulation
irc$lation and soa'ing of the che%ical %i ill e considered here heav %erc$r conta%ination or internal corrosion is identified or s$spectedG or here there is a possiilit that the %erc$r has co%ined ith corrosion scale.
Page 22
PR-1515 – Onsite Mercury Management Procedure
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#$ring circ$lation the che%ical ill e p$%ped aro$nd the sste% and vessel and alloed to soa' on the s$rfaces or into the scale that %a e dislodged. irc$lation %a e $p to 12 ho$rs or %ore and re@$ire the installation of a portale p$%ping loop. The sol$tion is then vac$$%ed fro% the sste% a vac$$% tan'er. The che%ical inding of an %erc$r conta%inants ill red$ce or prevent vapo$rs eing given off hen the sste% or vessel is opened. NOTE: Tis metod o& decontamination sall re+uire some en$ineerin$ %or) to remove * install te pipe%or) and e+uipment &or pumped circulation i& no suita'le means is availa'le in te desi$n o& te system * e+uipment( The proced$re for ontin$o$s irc$lation depends on the config$ration to e $sedG hoever the folloing shall e applicale: •
•
•
rea'ing contain%ent <flanges= and re%oving pipeor' and valves shall e $nderta'en as descried in 4.,.1. !onitoring and recording ase line %erc$r vapo$r readings sho$ld e carried o$t at s$itale %an as ens$ring all other relevant proced$res have een adhered to. The %anas sho$ld e covered ith polthene and sa%pled thro$gh penetrations in the cover. Reg$lar chec's ill e carried o$t on the co$rse strainer. Personnel shall ear appropriate PPE d$ring cleaning all aste. 8aste sho$ld e treated as toic and %onitored / stored correctl.
8or' can e $nderta'en on the vessel hen all draining has een co%pleted and the %erc$r vapo$r levels are J0.02? %g/*%, . !erc$r vapo$r reading shall e ta'en at reg$lar intervals <specialist s$pervisor to advise=. /or) shall ;e stopped and local decontamination underta)en i= levels o= mercury vapour increase a;ove sa=e levels +#&#"5 mg(%m< ..
Con=ined 'pace 6isual !nspection and ,ntry onfined space vis$al inspection and f$ll entr shall e treated differentl hen testing for the presence of %erc$r vapo$r. The Oheads and sho$lders onl inspection here a f$ll entr is not re@$ired also re@$ires that confined space has een certified for entr $nder the PT8 sste%. Then a vis$al inspection onl re@$ires the i%%ediate vicinit of the access point to e %onitored for %erc$r vapo$r and a deconta%ination che%ical spra applied in that vicinit to re%ove it if fo$nd. The Oheads and sho$lders onl inspection can then e carried o$t after a second ro$nd of vapo$r %onitoring has een $nderta'en to confir% conditions are safe. 8here a f$ll entr to the confined space is re@$ired for repair or inspection then the folloing steps shall e ta'en:
Page 2,
1.
onfir% that the onfined 7pace Entr ertificate is valid.
2.
!onitor the access point and record the ase reading <;a!at Tea%=
,.
Appl deconta%inant spra if re@$ired. )se PPE as per Appendi 1 for onfined 7pace Entr and enter the confined space <;a!at Tea%=.
4.
*+TE: All safet preca$tions detailed in PR-11=< – Entry in to a Con&ined "pace appl
?.
!onitor the internal space of the confined space and record an Hhot spotsI. Appl deconta%inant spra as re@$ired to treat the areas. Pa partic$lar attention to internal fittings and solids / li@$ids in the otto% of the space.
.
8hen the confined space has een %onitored and all hot spots recorded / treated or' can e alloed to e $nderta'en. Bentilation ith forced etract PR-1515 – Onsite Mercury Management Procedure
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shall e installed for areas here %erc$r vapo$r is s$spected or anticipated to acc$%$late. 5.
!erc$r vapo$r reading shall e ta'en at reg$lar intervals <specialist s$pervisor to advise=. /or) shall ;e stopped and local decontamination underta)en i= levels o= mercury vapour increase a;ove sa=e levels +#&#"5 mg(%m<..
8hen f$ll access is re@$ired for a confined space then PPE sho$ld e provided that prevents s'in contact ith the internals of the space here %erc$r conta%ination %a e or still is present. Additionall a face %as' %$st e orn to prevent ingress in to the ees.
&
$ot /or)ing on Mercury Contaminated 'ur=aces The folloing shall e noted hen considering H;ot 8or'I on s$rfaces that are 'non to e or li'el to have een conta%inated d$e to %erc$r epos$re. a.
All e@$ip%ent that co%es in contact ith %erc$r conta%inated gases or prod$ced fl$ids sho$ld e considered to e !erc$r onta%inated. <The a%o$nt of %erc$r asored into the %etal s$rface ill var.=
.
!erc$r can enter the %atri of a %etal s$rface and for% a%alga%s ith other s$stances hich ill not vaporise and ill therefore not e detectale ith a %erc$r vapo$r analser. 8hen these s$rfaces are dist$red and / or heated the %erc$r ill vaporise.
c.
#econta%ination of a s$rface does not %a'e the e@$ip%ent H!erc$r "reeI. ;eat ill release %erc$r that is previo$sl not detectale and the vaporisation rate is li'el to e etre%el high. NOTE: /en mercury is eated in te presence o& air to a'ove >0 de$ C it is converted to !ercuric Oide( 2t >00 de$ C it decomposes separatin$ te #$ and te Oy$en( /AR%!%8 Mercury analysers do not detect Mercuric Oide +$gO.&
d.
8hen elding or grinding %erc$r conta%inated %etal re%ove the e@$ip%ent to a ell ventilated area and 'eep people that are not re@$ired for the or' ell aa. Refer section 4.1., Ecl$sion Cones.
e.
!ost %erc$r che%ical s$its are fla%%ale and therefore a fireproof overall %$st e orn over the che%ical s$it. NOTE: Tis &ireproo& overall is li)ely to 'ecome mercury contaminated and must 'e disposed or soa)ed in decontamination cemicals and tested prior to 'ein$ placed in te normal laundry(
Page 24
f.
Personnel or'ing in the vicinit of the hot or' %$st ear correct PPE etc.
g.
All hot or' $nderta'en on e@$ip%ent ith %erc$r present shall e H$pindI in an Ecl$sion Cones. 8elding or' here there are elevated levels of %erc$r vapo$r present sho$ld e assessed ;7E and the 7pecialist 7$pervisor and here necessar Hpositive flo face %as'sI shall e $sed all persons in the direct vicinit of the elding.
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Pigging Operations +n facilities here there is a ris' of %erc$r conta%ination consideration sho$ld e given to pigging <la$nching and receiving= operations. The highest ris' ill e in the receiving operations d$e to the higher ris' of epos$re to sl$dgeG la$nching ill still have a ris' $t this ill e li%ited as sl$dge ill not tend to e present.
eneral The folloing are areas of general aareness that sho$ld e addressed: •
•
•
•
•
&a$ncher and receiver li@$id drains sho$ld e provided ith a %eans of capt$ring li@$ids for storage and disposal as haardo$s aste. NOTE: !ost PO &acilities do not ave tis provision 6yet7 &a$ncher and receiver vents sho$ld e ro$ted to a safe area aa fro% here personnel are or'ing #rip tras sho$ld e provided $nder the la$ncher and receiver doors to capt$re an spillage A ladon area for toic aste shall e provided that is clearl %ar'ed ith arning signs Pigging cres shall e provided ith s$itale arrier %aterials ith hich to place pigs and tools for transportation $ntil the can e deconta%inated and cleaned.
/AR%!%8 Pigs and tools shall not ;e transported loose a=ter they have ;een eposed to possi;le mercury contamination&
Pigging The folloing proced$re shall e folloed for Pipeline Pigging +perations PR-10<? – Pipeline Pi$$in$ Procedure. The 7teps elo sho$ld e incl$ded here relevant.
Page 2?
1.
orrect PPE for the %erc$r ris' %$st e orn. f the ris' is $n'non respirators face %as' and gloves shall e orn $ntil li%it of ris' is ascertained.
2.
!onitor and record ase line reading aro$nd the vicinit of the la$ncher / receiver efore pigging operations start <;a!at Tea%=.
,.
7et $p a deconta%ination point for all personnel or'ing on the pigging operation. The deconta%ination point sho$ld e e@$ipped ith storage for haardo$s %erc$r aste.
4.
Ens$re that all li@$id draining fro% the la$ncher / receiver arrel is %onitored and recorded. All li@$ids shall e capt$red in a container. An spills shall e %onitored treated and recorded.
?.
Ens$re that provision is %ade to contain an spills hen the pig la$ncher / receiver door is opened.
.
;a!at tea% shall e present and %onitor hen the pig la$ncher / receiver door is opened. #econta%inant che%ical shall e $sed as re@$ired to address %erc$r vapo$r release.
5.
efore loading the pig %onitor and record the conditions in the la$ncher.
>.
The $sed pig and sl$dge fro% the pig receiver shall e treated as haardo$s. The pig shall e agged and tagged and all sl$dge incl$ding asorent aste shall e placed in containers and sealed. The containers shall e tagged and %ar'ed according to the level of conta%ination. PR-1515 – Onsite Mercury Management Procedure
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9.
!onitor and deconta%inate or'ing part as re@$ired and store all conta%inated PPE in a sealed container. onta%inated tools shall e agged and sent for cleaning.
10.
!ove all haardo$s aste containers to the designated area. !onitor and deconta%inate eternal s$rfaces if re@$ired. &oad aste sec$rel on transport and ship to designated %erc$r aste storage and treat%ent area.
NOTE: Te contaminated pi$ sall 'e sent &or cleanin$ 'e&ore it can 'e returned &or use(
&@
'ludge Removal 8hen dealing ith sl$dge the folloing ;7E 7pecifications shall e referenced and adhered to: •
"P-100>
#"E "peci&ication - Emissions to 2tmospere
•
"P-1003
#"E "peci&ication - 2+ueous E&&luents
•
"P-100.
#"E "peci&ication - /aste !ana$ement
•
"P-1180
#"E "peci&ication - Naturally Occurrin$ Radioactive !aterials 6NOR!7
A proportion of the %erc$r conta%ination 1?N to 20N shall e fo$nd %ied ith the hdrocaron sl$dge that acc$%$lates in the pipelines in the otto%s of vessels and at lo points on the e@$ip%ent.
PR-1055 6 Preparation o& "tatic E+uipment &or 5nternal !aintenance and 5nspection covers the preparation of static e@$ip%ent hich incl$des vessels and pipeor' and has a specific 7ection ao$t cleaning in partic$lar. 7l$dge can occ$r in a vessel that is ver diffic$lt to dislodge and %a re@$ire to e treated to %a'e it possile to re%ove. !MPOR0A%08 7l$dge can also contain other conta%inants that re@$ire to e handled in a partic$lar %anner i.e. *+R! and this shall e ta'en into consideration. 8hen dealing ith sl$dge the folloing shall e considered and adhered to here applicale: •
•
•
Page 2
ontin$o$s %onitoring for %erc$r vapo$r shall e carried o$t hile the or' is eing $nderta'en and forced etraction ventilation sste% $sed here applicale to red$ce %erc$r vapo$r. Personnel re%oving the sl$dge %an$all shall e provided ith positive flo air %as's and f$ll face shields if the ris' level arrants this level of protection. All are s'in that %a co%e into contact ith the sl$dge or conta%inated %etal s$rfaces shall e covered and protected. Printed 19/04/11 PR-1515 – Onsite Mercury Management Procedure
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Petroleum Development Oman LLC •
•
•
•
•
•
•
Page 25
Revision: 2.0 Effective: Apr-11
"ootear shall e safet r$er oots as a %ini%$% efore loading into aste dr$%s or a vac$$% tan'er the sl$dge shall e spraed ith a deconta%inant che%ical to red$ce the %erc$r vapo$r released. "$ll deconta%ination incl$ding disposal / cleaning of all PPE shall e re@$ired for all personnel involved ith the sl$dge re%oval ithin a confined space. Refer to 7ection ,.>.for sl$dge aste handling and re%oval. efore transporting dr$%s containing %erc$r aste the ha$lage contractor shall e advised on the dangers and provided ith details of actions to e ta'en in the event of a spillage. 8aste dr$%s shall e loaded in a vertical orientation and sec$red to restrict an %ove%ent. The Do$rne plan for the %ove%ent of %erc$r aste sho$ld e notified to the R+P as a haardo$s aste ship%ent.
PR-1515 – Onsite Mercury Management Procedure
Printed 19/04/11
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Appendi 1 – Personal Protection ,>uipment PP, ,ternal ,posure $g Level +mg(m<.
Respiratory
$and
oot
*ody
$g E#&#"5
*ot re@$ired
otton gloves
7afet oots
*o%e coverall
$g #&#"5 to E#&"5#
;alf face %as' ith %erc$r cartridge
*itrile r$er gloves
8et conditions r$er safet oot
!erc$r disposale coverall Ea%ple Tve Tpe
R,D 1
$g#&"5# to E1&"5#
#r conditions 7afet oots ;alf face %as' ith %erc$r cartridge
*itrile r$er gloves
8et conditions r$er safet oot #r conditions 7afet oots
!erc$r disposale coverall Ea%ple Tve Tpe
"$ll face %as' ith %erc$r cartridge
*itrile r$er gloves
8et conditions r$er safet oot #r conditions 7afet oots
!erc$r disposale coverall Ea%ple Tve Tpe
R,D "
$g F1&"5# R,D <
Page 2>
PR-1515 – Onsite Mercury Management Procedure
Printed 19/04/11
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uideline - PP, Con=ined 'pace ,ntry $g Level +mg(m<.
Respiratory
$and
oot
*ody
$g E#&#"5
;alf face %as' ith %erc$r cartridge
#r conditions otton gloves 8et conditions *itrile r$er gloves
8et conditions r$er safet oot #r conditions 7afet oots
*or%al disposale coverall
$g #&#"5 to E#&"5#
;alf face %as' ith %erc$r cartridge
*itrile r$er gloves
7afet r$er oots
!erc$r disposale coverall
"$ll face %as' ith %erc$r cartridge
*itrile r$er gloves
7afet r$er oots
!erc$r disposale coverall
Air s$pplied respirator ith %as'
*itrile r$er gloves
7afet r$er oots
he%ical s$it <Biton %aterial=
R,D 1
$g#&"5# to E1&"5# R,D "
$g F1&"5# R,D <
Changing Disposa;le Coverall and other PP, R,D 1 •
#a%age d$e to 8ear M Tear
•
onta%inated ith dirt /sl$dge.
R,D " •
+nce per da
•
#a%age d$e to 8ear M Tear
R,D < ( Con=ined 'pace •
+nce per ever rea'
•
#a%age d$e to 8ear M Tear
NOTE: Nitrile Ru''er 9loves "a&ety Ru''er Boots can 'e reused a&ter decontamination and %asin$(
Page 29
PR-1515 – Onsite Mercury Management Procedure
Printed 19/04/11
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Appendi " – ,posure and irst Aid ,posure Levels •
8;+ M 7hell +E& The +cc$pational ;ealth Epos$re &i%it <+E&= is c$rrentl #&#"5 mg(m< <8orld ;ealth +rganiation and 7;E&&=. f concentrations aove this val$e are %eas$red f$ll PPE needs to e $sed. Refer Appendi 1. elo this concentration the or' can contin$e as nor%al.
•
A; T&B The A%erican onference of overn%ental nd$strial ;gienists has assigned %erc$r vapo$r a threshold li%it val$e <T&B= 0.02? %g/%, as a T8A for a nor%al >ho$rs or'da and a 40-ho$rs or'ee' and considers %erc$r vapo$r an A4 s$stance <not classifiale as a h$%an carcinogen=.
•
+7;A PE& The c$rrent +cc$pational 7afet and ;ealth Ad%inistration <+7;A= per%issile epos$re li%it <PE&= for %erc$r vapo$r is 0.1 %g/%, of air as a ceiling li%it. A or'erQs epos$re to %erc$r vapo$r shall at no ti%e eceed this ceiling level.
•
*+7; RE& The *ational nstit$te for +cc$pational 7afet and ;ealth <*+7;= has estalished reco%%ended epos$re li%it <RE&= 0.0? %g/%, as a T8A for $p to a 10-ho$rs or'da and a 40-ho$rs or' ee'.
Rationale =or Limits The li%its are ased on the ris' of central nervo$s sste% da%age ee s'in and respirator tract irritation.
Mercury Contact ith the ')in •
•
•
•
*ot 'non to irritate to s'in Allergic reaction %a develop Ele%ental li@$id and vapo$r can e asored thro$gh the s'in and ill contri$te to overall asorption and toicit +rganic %erc$r can easil pass thro$gh the s'in and into the od
Mercury in the ,yes •
•
•
*ot 'non as a direct ee irritant ;igh concentrations of ele%ental %erc$r vapo$r can ca$se redness $rning and infla%%ation of the ees +rganic %erc$r can e asored eelids and %ove into lood strea%.
Prevention o= ,posure •
•
•
0rain e%ploees in proper e@$ip%ent and che%ical handling and proced$res. All e%ploees sho$ld e %ade aare of the high ris' areas in the facilit and the proced$res to co%at this ris'. La;el %erc$r-containing instr$%ents. !a'e s$re facilit has a %erc$r spill clean$p 'it. !a'e s$re staff are trained in proper clean$p proced$res. Clean spills immediately and treat soiled toels as a haardo$s aste. #o not place %erc$r-containing %aterials in iohaards aste receptacles. Page ,0
PR-1515 – Onsite Mercury Management Procedure
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ollo procedures hen cleaning or refilling %erc$r-containing instr$%ents
•
/OR4LOOR !%'0R2C0!O% CARD Mercury ,lement !denti=ier
;g
ound As
Bapo$rG &i@$idG 7olid
ound /here
Process E@$ip%ent and Pipeor' of as Process "acilities
,posure Category
;ighl Toic
Occupational $ealth ,posure Limit +O,L.
0.02? %g/%,
Primary Ris)s !a acc$%$late in the od <har%f$l in the long ter%=. !a ca$se har% to the $norn child. Toic inhalation <%a ca$se pne$%onia and/or %etal vapo$r fever=. Prod$ct is asored thro$gh the s'in. !a ca$se irritation to s'in ees and respirator sste%. Reacts violentl ith sodi$% potassi$% and lithi$% <al'ali %etals= and %a ca$se fire/eplosion. !erc$r for%s an eplosive co%ination ith a%%onia a%ines oalic acid and acetlene. 7everal %etals <gold silver copper inc and al$%ini$%= dissolve in %erc$r. Ber toic to a@$atic organis%s and har%f$l in the long ter%.
0oic Dangerous =or the ,nvironment
Prevention Measures Prevent contact ith al'ali %etals <for ea%ple sodi$% potassi$% and lithi$%= Respirator protectionG filter tpe AE;g/P,
ire ,tinguishing ( irst Aid !R, ( ,PLO'!O%
Poder foa% spra ater or caron dioide <+2= *ot infla%%ale and/or eplosive
!%$ALA0!O%
"resh air and rest appl artificial respiration if necessar. +tain %edical attention i%%ediatel and if possile sho pac'aging and/or lael and this card.
&i@$id tight clothing and gloves <$tl r$er neoprene or PB=
'4!% CO%0AC0
Re%ove conta%inated clothing and ash s' in ith plent of ater and soap. +tain %edical attention i%%ediatel and if possile sho pac'aging and/or lael and this card
o%ined ee and respirator protection
,3, CO%0AC0
Rinse $sing plent of ater <re%ove an contact lenses if possile=. et %edical attention if there are s%pto%s and if possile sho pac'aging and/or lael and this card
!%,'0!O%
f victi% is conscio$s allo victi% to rinse %o$th and after that let hi% drin' 2 glasses of ater. #+ *+T ind$ce vo%iting. +tain %edical attention i%%ediatel and if possile sho pac'aging and/or lael and this card
8hen $sing do not eat drin' or s%o'e
'torage
7torage inside a ell ventilates storage at floor level. 7eparated fro% all other prod$cts. eep container tightl closed
Cleaning up spillage 'peci=ic Ris)s 8
EBA)ATE 8AR** C+*E A*# *+T"F ELPERT large spills
Personal Protection 8
As %ini%$% respiratorsG f$ll face visor oots gloves and coveralls. Tpes of PPE dependant on etent or severit of spill
Cleaning 2p
Re%ove large spills in cons$ltation ith an epert. Ta'e $p s%all spills an asoring agent and collect in dr$%s/containers. 8ash aa the re%ains ith ater <prevent discharge of sco$ring ater into seer/s$rface ater=. Transport dr$%s/containers according to local r$les
Page ,1
PR-1515 – Onsite Mercury Management Procedure
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Appendi < – Contaminated /aste Management lo Chart
Page ,2
PR-1515 – Onsite Mercury Management Procedure
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Appendi – /or) loor !nstruction Card – Mercury /OR4LOOR !%'0R2C0!O% CARD Mercury
Primary Ris)s !a acc$%$late in the od <har%f$l in the long ter%=. !a ca$se har% to the $norn child. Toic inhalation <%a ca$se pne$%onia and/or %etal vapo$r fever=. Prod$ct is asored thro$gh the s'in. !a ca$se irritation to s'in ees and respirator sste%. Reacts violentl ith sodi$% potassi$% and lithi$% <al'ali %etals= and %a ca$se fire/eplosion. !erc$r for%s an eplosive co%ination ith a%%onia a%ines oalic acid and acetlene. 7everal %etals <gold silver copper inc and al$%ini$%= dissolve in %erc$r. Ber toic to a@$atic organis%s and har%f$l in the long ter%.
0oic and Dangerous to the ,nvironment Prevention Measures Prevent contact ith al'ali %etals <for ea%ple sodi$% potassi$% and lithi$%=
ire ,tinguishing ( irst Aid !R, ( ,PLO'!O%
Poder foa% spra ater or caron dioide <+2= *ot infla%%ale and/or eplosive
Respirator protectionG filter tpe AE;g/P,
!%$ALA0!O%
"resh air and rest appl artificial respiration if necessar. +tain %edical attention i%%ediatel and if possile sho pac'aging and/or lael and this card.
&i@$id tight clothing and gloves <$tl r$er neoprene or PB=
'4!% CO%0AC0
Re%ove conta%inated clothing and ash s'in ith plent of ater and soap. +tain %edical attention i%%ediatel and if possile sho pac'aging and/or lael and this card
o%ined ee and respirator protection
,3, CO%0AC0
Rinse $sing plent of ater <re%ove an contact lenses if possile=. et %edical attention if there are s%pto%s and if possile sho pac'aging and/or lael and this card
!%,'0!O%
f victi% is conscio$s allo victi% to rinse %o$th and after that let hi% drin' 2 glasses of ater. #+ *+T ind$ce vo%iting. +tain %edical attention i%%ediatel and if possile sho pac'aging and/or lael and this card
8hen $sing do not eat drin' or s%o'e
'torage
7tore inside and ventilate at floor level. 7eparated fro% all other prod$cts. eep container tightl sealed
Cleaning up spillage Large 'pill
Evac$ate area and contact 7pecialist o%pan
Personal Protection 8
"$ll face visor canister reg$lator or self contained reathing apparat$s and gloves and oots <$tl r$er neoprene or PB=.
Cleaning 2p
Re%ove large spills in cons$ltation ith an epert. Ta'e $p s%all spills an asoring agent and collect in dr$%s/containers. 8ash aa the re%ains ith ater <prevent discharge of sco$ring ater into seer/s$rface ater=. Transport dr$%s/containers according to local r$les
Page ,,
PR-1515 – Onsite Mercury Management Procedure
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Appendi 5 – 'ite and ,>uipment /arning 'ignage The folloing are ea%ples of 8arning 7ignage to e fo$nd at P#+ locations here the ris' of !erc$r is present.
Page ,4
PR-1515 – Onsite Mercury Management Procedure
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PR-1515 – Onsite Mercury Management Procedure
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PR-1515 – Onsite Mercury Management Procedure
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Appendi @ – Mercury 'pillage
Page ,5
PR-1515 – Onsite Mercury Management Procedure
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Appendi : – Decontamination o= O==line ,>uipment
Page ,>
PR-1515 – Onsite Mercury Management Procedure
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Appendi 9 – Decontamination o= Personnel
Page ,9
PR-1515 – Onsite Mercury Management Procedure
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Appendi B – A;;reviations A&ARP
As &o As Reasonal Practicale
37P
3o 7afet Plan
&P
&i@$id Petrole$% as
+E&
+cc$pational ;ealth Epos$re &i%it
PE
Polethlene
PP
Polproplene
PPE
Personal Protection E@$ip%ent
PT8
Per%it to 8or'
PB
Polvinl chloride
7;+
7afe ;andling of he%ical
Page 40
PR-1515 – Onsite Mercury Management Procedure
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Appendi 1# – Re=erence Material P#+ #oc$%ents ode of Practice P-114
!aintenance and ntegrit !anage%ent oP
7pecifications 7P-100?
;7E 7pecification - E%issions to At%osphere
7P-100
;7E 7pecification - A@$eo$s Effl$ents
7P-1009
;7ES7pecification 6 8aste !anage%ent
7P-1150
;7E 7pecification - *at$rall +cc$rring Radioactive !aterials <*+R!=
7P-12,0
!edical Ea%ination <this doc$%ent is $nder revie !7E/,=
7P-12,1
+cc$pational health <this doc$%ent is $nder revie !7E/,=
7P-20>5
7pecification for +nsite !erc$r !anage%ent
Proced$res PR-105,
as "reeing P$rging M &ea' Testing of Process E@$ip%ent <Ecl$ding Tan's=
PR-105
solation of Process E@$ip%ent
PR-1055
Preparation of 7tatic E@$ip%ent for nternal !aintenance and nspection
PR-1059
as "reeing and P$rging of Tan's
PR-10>2
Pipeline Pigging Proced$re
PR-114>
Entr in to a onfined 7pace
,ternal Documents #EP 50.10.>0.11
Page 41
leaning of E@$ip%ent
PR-1515 – Onsite Mercury Management Procedure
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