SAME: Aug 2010

THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O ´
' THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O o
AN ENGINEER’S VIEW
I
am personally tired of observing and commenting
so much of our past failures in this leader column.
How many of them are actually easily enabled to
be turned around and developed for the benefit
of South African citizens? If we can project manage
the WC with all its first-time challenges, why can’t
we get the relatively straight forward function of
municipal service delivery right?
Let’s do it
The root cause is clear. Get rid of lousy, incompetent,
unqualified, corrupt management; fire the officials
who seem incapable of delivering, and are misusing
funds. No more paid suspension and jobs for pals.
But let’s do it. Time to get private power producers
going. Time to get the Acts amended that mess with
our potential to exploit our minerals. Time to get
effective engineering training going.
Get measures agreed to radically reduce the mas-
sive unemployment level. We will go bankrupt at the
rate we pay more receivers of social benefits than
have jobs. Reducing unemployment is our biggest
challenge. Here is a thought, though. It comes from
a recent SAIEE Presidential address. “If one is look-
ing for modern examples of the good old fashioned
engineering approach to economic development,
one needs to look to the East. When President
Hu of China appointed his first cabinet in 2002,
every one of them was an Engineer. Perhaps this in
part explains China’s ongoing extraordinary economic
growth and industrialization”.
So, Members, how shall we go for the world cup
in transforming a system that has been taking us
for a ride for too long? A very positive development
has just been announced and which exemplifies the
ability of a lot of adversarial parties to get together
and formulate a new deal all with a common goal.
Chris Reay
Chairman of the Working
Committee: Communications
(SA Institution of Mechanical
Engineering)
This is the recent mining commitment plan which
followed the Citibank International report that South
Africa sits on the most valuable mineral wealth
in the world by far, streets ahead of Russia and
Australia in second and third places.
We have R18 Trillion in an un-mined prize waiting
for initiative, co-operation, funding, innovation,
supporting infrastructure, skills development,
employment and all the other benefits of a good,
long term plan. Even Malema should be excited.
It noticeably seems however to have eluded the
government’s own planning commission, but we
all know how evident that has been.
Outgoing action
Power and energy. Big plans now in hand for private
power generation, and additionally an exciting devel-
opment in advanced waste coal carbon combustion
technology with almost no carbon footprint. Unless
co-generation gets going, then any major mining
and industrial initiatives will not have the power
due to Eskom’s limitations.
Can we catalyse the World Cup energy into ongo-
ing action? It is up to everyone to make it happen.
Tourism just has to escalate, which means major
options for the service industry. I heard countless
comments from foreign visitors at Cape Town’s V
and A waterfront at the semi-final on a beautiful
evening that it must be the best all-round place
for a World Cup.
The new SAIMechE website has the functions to
enable interaction and debate. Can this connectiv-
ity and our a new feeling of optimism improve our
collective advance into getting Engineers into the
main arena? Sceptics, step aside. Let the game
begin.
My greatest hope is that the evident, positive and extraordinary atmosphere, ener-
gy charge and positive outlook that have emerged as a result of the way we staged
the World Cup will serve to enable us to believe in ourselves and our abilities to
reach the best standards for South Africa. Every citizen, and in our case, every
engineering resource, has the opportunity and an obligation do something to get a
new show on the road. We simply must not fall into a state of post party hangover
or depression, or back to business as usual.
Our World after
the
Sits on the most valuable mineral wealth in the world by
far, streets ahead of Russia and Australia in second and
third places
4 THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
GEA Grasso (Africa) (Pty) Ltd
19 Chain Avehue º MohIague Cardehs º PO 8ox 36815 ChempeI 7442
Tel : 021 551 4034 º Fax: 021 551 4035
Website: www.grasso.co.za
CLA Re!rigeraIioh




U
U
U
U
U
sta
n
d
N
o
. 5
D
2
3
V
isit u
s a
t
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O o
Monthly Column
8 One Stormy Night ...
Cover Story
11 Extending Gearbox Life
Power Transmission
13 New Electric Motors
15 More Than Just Bearings
Pipes, Pumps & Valves
17 The Key is Stocking Up
19 Diesel Power
POWER GENERATION TODAY
21 Power of Water
Produced by:
PROMECH PUBLISHING,
P O Box 373, Pinegowrie, 2123
Republic of South Africa
Tel: (011) 781-1401, Fax: (011) 781-1403
Email: [email protected]
Website: www.promech.co.za
Managing Editor Susan Custers
Editor Kowie Hamman
Advertising Pauline Bouwer
Circulation Catherine Macdiva
DTP Zinobia Docrat/Sanette Lehanie
Disclaimer
PROMECH Publishing and The South African Institution of Mechanical
Engineering as well as any other body do not take responsibility for
the opinions expressed by individuals.
Printed by: Typo Colour Printing, Tel: (011) 402-3468/9
Offcial Publication of
THE SA INSTITUTION OF MECHANICAL ENGINEERING
and endorsed by:
 CORROSION INSTITUTE OF SA
 SA PUMP MANUFACTURERS ASSOCIATION
 SA VALVE AND ACTUATORS MANUFACTURERS ASSOCIATION
 THE SA INSTITUTE OF TRIBOLOGY
 NUCLEAR INSTITUTE
 SA INSTITUTE FOR NON-DESTRUCTIVE TESTING
 NATIONAL SOCIETY OF BLACK ENGINEERS
 INSTITUTE FOR CERTIFICATED MECHANICAL AND
ELECTRICAL ENGINEERS
 SOUTH AFRICAN ASSOCIATION OF CONSULTING ENGINEERS
 ASSOCIATION OF SOCIETIES FOR OCCUPATIONAL SAFETY
AND HEALTH
27 Power Generation News
Computers in Engineering
29 What’s Actually in There?
33 We are Being Ripped Off
Regulars
3 An Engineer’s View
6 Institution News
28 Nuclear Institute (SA Branch)
35 SAINT
37 SAIT
39 Market Forum
46 On the Move
Contents
The monthly circulation is 4 242
Copyright
All rights reserved. No editorial
matter published in “SA Mechani-
cal Engineer” may be reproduced
in any form or language without
written permission of the publish-
ers. While every effort is made to
ensure accurate reproduction, the
editor, authors, publishers and
their employees or agents shall
not be responsible or in any way
liable for any errors, omissions or
inaccuracies in the publication,
whether arising from negligence or
otherwise or for any consequences
arising therefrom. The inclusion
or exclusion of any product does
not mean that the publisher or
editorial board advocates or rejects
its use either generally or in any
particular field or fields.
/ucus¦ 'O´O \O¦LMF oO NLMEFF 8
GEA Grasso (Africa) (Pty) Ltd
19 Chain Avehue º MohIague Cardehs º PO 8ox 36815 ChempeI 7442
Tel : 021 551 4034 º Fax: 021 551 4035
Website: www.grasso.co.za
CLA Re!rigeraIioh




U
U
U
U
U
sta
n
d
N
o
. 5
D
2
3
V
isit u
s a
t
Hansen Transmissions
Tel: (011) 397-2495
Email:
ffourie@hansentransmissions.
com
o THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
Council 2009/2010
Office Bearers
Presiden¦....................................................C Earbic (Ceorce)
Presiden¦ F¦ec¦...............................................L Findeis (Lir¦)
Na¦iona¦ Treasurer.................................¦¦ Nvanconi (¦ud.ai)
Branch Chairpersons
Cen¦ra¦ .........................................................M Cra·er (Mi¦e)
Fas¦ern Cape.................................................\ Fa¦¦ (\i¦¦ia·)
¦wa/u¦u Na¦a¦...........................................M E¦ac¦ (Ma¦co¦·)
\es¦ern Cape ..........................Pro¦ E Co¦¦ierFeed (Erandon)
Portfolios
Co··unica¦ions............................................CL Feav (Cnris)
Fduca¦ion – Lniversi¦ies...............................................\acan¦
Fduca¦ion – Lniversi¦ies o¦ Tecnno¦ocv.........F /awi¦s¦a (Fwa)
Me·bersnip..................................................F /awi¦s¦a (Fwa)
oe·inars and \or¦snops...............................L Findeis (Lir¦)
Candida¦e Pnase Leve¦op·en¦ .........................................TE/
Tecnno¦ocv Procra··e...............................o/ Hrabar (o¦eve)
To be con¦ir·ed.............................................../ Foos (/ndre)
To be con¦ir·ed....................................C. Ear¦no¦o·ew (Ear¦)
Chief Executive Officer: \aucnan Fi·bau¦¦
National Office Manager: /nisa Nanabnav
PO Eo o´´. Eru·a. 'O'o
Te¦. (O´´) o´ooooO. Fa. (O´´) o88oooo
F·ai¦. in¦o(sai·ecne.orc..a
\ebsi¦e. www.sai·ecne.orc..a
Me·bersnip. Cen¦ra¦. Fas¦ern Cape o ¦/N.
·e·bersnip(sai·ecne.orc..a
Me·bersnip. \es¦ern Cape. sai·ecne.wc(voda·ai¦.co..a
Company Af filiates
Alstom Power Service SA
Babcock Africa Limited
Bateman Engineered Technologies
Bosch Projects
Fluor SA
GEA Air-cooled Systems
Hansen Transmissions SA
Hatch Africa
Howden Power
Howden Projects
Industrial Water Cooling
MBE Minerals (SA) (Pty) Ltd (previ-
ously KHD Humboldt Wedag SA
Megchem Eng & Drafting Services
Osborn Engineered Products SA
Rotek Engineering
RSD a division of DCD-Dorbyl
S.A.M.E Water
Sasol Technologies
SEW Eurodrive
Siemens
SNC-Lavalin SA
Spicer Axle SA
Spirax Sarco SA
Thyssenkrupp Engineering
Transvaal Pressed Nuts & Bolts
Ultra-Flow Engineering Services
Vital Engineering
Weir Minerals Africa
Winder Controls
THE SA INSTITUTION OF MECHANICAL ENGINEERING
Saimeche,
Western Cape
Annual Dinner &
Dance 2010
To be held on Friday
The
29th Of October
2010.
Details To Follow Soon!
The Central Branch
Dinner Dance
Date: Saturday 9th
October 2010
Time: 18:30 for 19:00
Venue: Killarney
Golf Club
Dress: Black Tie/
Traditional/Smart
Cost: R3 500 per table
of 10 or R350 for
individual tickets.
R.S.V.P. by no later than
17th September 2007.
Contact Lynne on (011)
615-5660/ cent ral @
saimech.org.za
Dinner
Dance
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O ¯
THE SA INSTITUTION OF MECHANICAL ENGINEERING
SAIMechE National AGM
The National AGM held on 28 July 2010 was well
attended by members, guests, council and commit-
tee members and friends of the Institution.
A Special General Meeting preceded the AGM
where Constitutional amendments were tabled
and accepted.
Mr Stefan de Nagy Koves Hrabar and Dr Raimund
Loubser had each been awarded an Honorary
Fellowship.
Prof Thomas Harms was acknowledged for the
work done as Editor of the Research Journal for a
number of years.
The President acknowledged Council and branch
committee members who have continued to man-
age the affairs of the Institution in an effective
way, as well as staff for their contribution, and
the various role-players that continue to support
the Institution.
Visit the SAIMechE website to view the Annual
Report 2010 as presented at the AGM – www.
saimeche.org.za
Some of the guests at the AGM enjoying the sumptuous
dinner, socialising and networking
Du Toit Grober (SAIEE Past President) handing over certificate from SAIEE
to Mr George Barbic in recognition of SAIMechE’s contribution to SAIEE
and the engineering profession as a sister Voluntary Association. Mr Dirk
Findeis (SAIMechE Vice President) seated on the left and Mr Kudzai Nyan-
goni (SAIMechE National Treasurer) seated on the right
Dr Raimund Loubser (recipient of Honorary Fellowship),
Mr George Barbic (SAIMechE President), and Steve Hra-
bar (recipient of Honorary Fellowship and SAIMechE Past
President)
SAIMechE Training Events Calendar : Sep to Nov 2010
Whilst every effort is made to ensure that events take place as scheduled, SAIMechE reserves the right to change the schedule
as circumstances dictate. A registration form and full terms and conditions may be obtained from Carey Evans on E-mail: carey@
saimeche.org.za or Tel. 031-764-7136. Also, detailed individual event programmes are available from Carey. Corporations wishing
to book In-House Workshops may contact Linda Robinson on E-mail: [email protected] or Tel: 031 764 7136.
Event Code Workshop & Seminar Names Dates Region
E0610 The Engineer As Manager 09-Sep-10 East Rand
C3310 Stainless Steel - Complete Overview for Engineers Including Design with Stainless
Steel
15-Sep-10 Cape Town
H1310 Structured Problem Solving Techniques 16-Sep-10 Rivonia
EFP10 Fire Prevention and Control 16-Sep-10 East Rand
APS10 Engineering of Piping Systems 21-Sep-10 Durban
C4710 Capital Budgeting for Projects 22-Sep-10 Cape Town
B0610 The Engineer As Manager 23-Sep-10 Port Elizabeth
C1210 Psychrometrics & Psychrometric Processes 29-Sep-10 Cape Town
C0610 The Engineer As Manager 30-Sep-10 Cape Town
E3510 Plastics - A Complete Overview for Engineers Including Design with Plastics 30-Sep-10 East Rand
8 THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
It’s a moonless stormy night, outside his bedroom the howling wind is lashing at the trees. Leaves thrash
against the windows and the roof creaks under the strain, but it’s not the storm that wakes him up at 2am.
It’s the piercing ring of the cellphone on the bedside table and he’s up immediately, prompted by the special
ring tone he’s assigned to emergency calls.
One Stormy Night…
MONTHLY COLUMN
H
is name is Sean Serfontein and he is
the Durban NSRI Duty Controller. The
call is from the Harbour Master’s of-
fice, alerting him to a fishing trawler in
distress off the Durban coast. The wind is driving
fierce waves in all directions, making it impos-
sible for any sane human being to even think
of launching a rescue boat in the open sea. The
only way Sean can assist is by helicopter. He im-
mediately dials the number, which connects him
directly to the pilot on duty for the rescue helicopter.
With a powerful searchlight and the exceptional skill
of the aviator, they quickly locate the crippled trawler.
Fearing their vessel will sink, the 17 crew had already
abandoned ship and were huddled into four life raft
grouped together with a little inflatable boat. Being
a strong swimmer, Sean is lowered down into the
stormy sea and after unclipping himself, he swims
the seventy metres across to the inflatable boat.
The fishermen
had given up on
the inflatable,
as they could
not get the en-
gine started.
Sean’s techni-
cal training had
prepared him
for this type
of problem and
before long the
engine was run-
ning.
A short while
later, a navy vessel and other boats arrived to
assist. Sean, using the inflatable boat, collected
several fishermen at a time from the life raft and
motored some distance away so the helicopter
could hover lower and hoist the survivors, one at
a time, into the helicopter. In turn, all 17 crew
were lowered to safety on the vessels standing by.
The next day, when the sea had calmed down,
That’s how people lose fingers just because they’re
monkeying around with a rope
David Sievwright of the National Sea
Rescue Institute in Durban
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O O
the authorities along with the owners were able
to save the trawler and tow it back to harbour.
For this brave rescue, Sean received an NSRI
Gallantry award, one of the highest recogni-
tions for bravery bestowed on a crewmember.
The NSRI
“SA Mechanical Engineer” speaks to David Sievwright
of the National Sea Rescue Institute in Durban about
the boats and people who make up this voluntary
rescue organisation based throughout South Africa.
“Over the past 40 years, the NSRI has saved
and assisted around 28 500 people in 14 500
rescue operations along the South African coast,”
he says. “This amounts to almost one rescue
operation every single day over the last 40 years.
Personal skills
“The main reasons people end up in trouble at sea
are ascribed to lack of training, poor equipment
on their boats and a disregard for bad weather,”
David explains. “In the past, a huge problem used
to be people just going out to sea without telling
anyone where they were going. Now regulations
require the skipper to fill in a launch register or
at least tell someone where they’re going and
when they expect to be back. It’s similar to an
aircraft filing a flight plan before setting off.”
Usually, NSRI rescue operations involve one of
their specialised rescue vessels, but with Sean’s
operation, other skills are sometimes brought to
bear. “Sean is a very strong swimmer and also
happens to have good technical know-how to
figure out the problem with the engine,” says
David. “Each member usually has something to
contribute from a personal skills perspective.”
Strict training
Although membership is voluntary, training is strict and
highly disciplined. “Due to the nature of the work and
in terms of safety and the gruelling conditions, there
just has to be a discipline. The Coxswains word is law.
“I’ve spent a lot of time at sea and I’ve seen some
nasty accidents where people have taken a chance or
not done what they were told to do, that’s how people
lose fingers just because they’re monkeying around
with a rope. There is no place for the Rambo-types
who “know it all” and want to join the NSRI just
for the prospect of adventures at sea.” says David.
Special boats
Starting from a small organisation in 1967, today the
NSRI has thirty rescue stations along the coastline
and three inland stations. “We operate a fleet of just
over 100 rescue craft which has a replacement value
of 138 million rand,” says David. “Nationally we
have a permanent staff complement of 25 people, the
rest is made up entirely of 920 voluntary male and
female members who come from all walks of life, from
architects to doctors, technicians and secretaries.”
David walks us through the boat shed on the
pier near the harbour mouth where the Durban
There is no place for the Rambo-types who “know it all”
MONTHLY COLUMN
station’s R7.5 million pride and joy of is ready to
launch within a minute or two. “It is a purpose-
built rescue vessel of 10 metres imported from the
UK,” explains David. “There are no fancy frills on
this vessel, but it has all the bells and whistles a
dedicated working rescue boat needs. Apart from
the robust hardy hull, it’s equipped with all the
latest technology that has been tried and tested in
search and rescue operations around the world.”
Skipper training
A good rescue boat is as good as its skipper and here
NSRI’s training goes beyond the normal standard.
“We’re similar to other voluntary organisations in
many ways, but our people give that little bit extra
by putting their life on the line,” says David. “There
is a bit of adventure but we also have plenty of
opportunities to have fun. When it comes to an
operation, it’s the camaraderie and professional
training that gives us our exceptional safety record.
“Our skippers, for example, undergo thorough in-
house training scheme that covers all the usual
skipper training,” adds David. “Once a candidate
has successfully mastered these skills, they go on
to write a national set of exams for the various
grades, putting our skippers a notch above those
who have a normal skipper’s ticket. Our skippers,
for example, will have an extra radio licence, a
first aid certificate, a life saving certificate, a mo-
torman certificate, knowledge of helicopter work
and understand the various rescue techniques.”
Drowning is permanent
Water, especially the sea, is no place to fool around.
“Drowning is permanent. Most importantly it is vital
to remember that sea water and booze do not mix,”
David says in conclusion. “People should always go
out to sea prepared and remember to respect the
sea. The waters are there to enjoy yourself, but they
can turn dangerous in an instant if you don’t know
what you’re doing and you flout the regulations.”
David Sievwright, NSRI, Durban, Tel: (031) 332-9772,
Email: [email protected],
´O THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
Strategy, investment and
best practice for industry,
power and government
Profit
13 - 15 September 2010
Sandton Convention Centre, Johannesburg, South Africa
The earlier you
book the more
you save!
Complete the relpy form
below
Mike Eyre
Technical Director
IPSA Group,
United Kingdom
Nelisiwe Magubane
Director General – Electricity
Department of Energy,
South Africa
Mohammed Abdelrahman
Energy Specialist
NEPAD Secretariat,
South Africa
Antonio Saide
Chairman
National Directorate of
Renewable Energies,
Mozambique
Bernard Osawa
Director – Renewables
Electricity Regulatory
Commission, Kenya
Hear from
BOOK NOW! online www.terrapinn.com/2010/cogenza | email [email protected] | phone +27 (0)11 516 4026 | fax +27 (0)11 707 8359
Produced by:
2 workshops, 1 day – Post-conference workshops: 15 September 2010
Sugar law, technology and advanced
OR
Energy policy and power purchase
bagasse generation agreements in Africa
www.terrapinn.com/2010/cogenza
Policy-making: the difference in 2010!
Hear the latest developments on power purchase agreements, feed-in tariffs
and electricity wheeling in the private sector
Source innovative IPP solutions just for you
Find out how you can translate the recent IPP policy challenges into opportunities
– your utility has no other choice but to buy your power
Sugar developments
Get new ideas around bagasse generation, sugar technology and energy pricing
in the sector
Yes! I am interested in Co-Generation World Africa 2010 Voucher code: A3 601207
c I would like to attend – please register me c My company would like to participate – please send me more information
Name ........................................................................................................................................................................................................................................
Job title ............................................................................................................Organisation ...................................................................................................
Address ....................................................................................................................................................................................................................................
Post code ..........................................................................................................Country ...........................................................................................................
Tel .....................................................................................................................Fax ..................................................................................................................
Email.........................................................................................................................................................................................................................................
Reply form Fax: +27 (0)11 707 8359
2
7
8
2

S
A

M
e
c
h
a
n
ic
a
l
E
n
g
in
e
e
r
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O ´´
Extending Gearbox Life
Compared with the cost of a plant as a whole, that of a gearbox is a fraction of the overall capital outlay
which, coupled with the fact that gearboxes generally have a long life, tends to result in a certain degree of
neglect in terms of routine maintenance. The general shortage of skilled maintenance technicians also contrib-
utes to the neglect of this equipment.
COVER STORY
I
n today’s economic climate,
optimum productivity plays a
critical role. No-one can afford
a set-back caused by even
one of the gearboxes in a plant
failing unexpectedly, bringing an
entire plant to a grinding halt.
Increasingly end-users are com-
ing to the realisation that regular
maintenance not only mitigates
against unexpected failures but
also extends gearbox life optimally.
Routine maintenance
contracts
Optimal means better reliability
and long-term service life which
is where Hansen Transmissions in
Jet Park comes in. They are now
offering routine maintenance con-
tracts to clients to help them get
the most out of their gearboxes.
“SA Mechanical Engineer” speaks
to managing director of Hansen South Africa, Fritz
Fourie. “We’re in an advanced stage of finalising
negotiations to take over the routine maintenance
and servicing of all the gearboxes on one of the
mines of a prominent mining group,” he says.
“After delivering a series of gearboxes for an opti-
misation project on the mine, they approached us
with this request and we see it as a huge opportu-
nity for us to expand our service offering to clients.
“All sectors of industry battle with the shortage
of qualified maintenance technicians resulting in
the general deterioration of machinery which we
increasingly come across in the field,” adds Fritz.
“For many years we’ve offered a repair service
which has seen our field service teams grow over
the last few years, but we’ve never ventured into
maintenance and upkeep of power transmission
equipment on site on behalf of the client, and this
seems to be what the market now desperately needs.”
Dedicated teams
The maintenance and upkeep service will not be
provided by the existing Hansen field service teams
who now carry out tasks like
installations, commissioning and
breakdowns. “We’re busy creat-
ing the infrastructure for dedi-
cated teams who are equipped
and trained to do routine main-
tenance and general upkeep of
power transmission plant such
as replacing filters, cleaning and
replacing breathers and chang-
ing the oil at regular intervals.
“These maintenance teams will
also carry out regular condition
monitoring and vibration test
to minimise unexpected break-
downs,” he adds. “This will pro-
vide us with the necessary infor-
mation to know when something
starts going wrong in the early
stages before it turns into a cata-
strophic failure that damages oth-
er components in the drive train.”
Life expectancy
Market requirements have changed and end users
are now increasingly considering the long-term
costs of maintenance. “Clients go to great lengths
to select gearboxes that will at least give them
100 000 hours’ life,” adds Fritz. “In addition they
are considering fitting instrumentation, additional
filtration systems and extra oil cooling systems, all
to ensure a longer life of the gearbox. Even though
this increases initial costs, they prefer to con-
sider the benefits over an extended period of time.
“Similarly, regular and proper routine maintenance
by professional technicians will contribute to an
extended gearbox life. If it’s not done properly you
could lose half the life of a gearbox,” explains Fritz.
“Our maintenance offering will now become part
and parcel of a ‘packaged drive solution’ where
we provide the whole drive system, including all
the instrumentation and all other extras that may
be required to get optimum life out of a gearbox.”
New ‘black box’
To complement the range of accessories that can
be fitted to a drive system, Hansen South Africa
is sponsoring the development of a ‘black-box’
that monitors gearbox vibration. “One of our wind
turbine gearbox specialists is a South African
Regular maintenance not only mitigates against
unexpected failures but also extends gearbox life optimally
Fritz Fourie, managing director of
Hansen South Africa
Strategy, investment and
best practice for industry,
power and government
Profit
13 - 15 September 2010
Sandton Convention Centre, Johannesburg, South Africa
The earlier you
book the more
you save!
Complete the relpy form
below
Mike Eyre
Technical Director
IPSA Group,
United Kingdom
Nelisiwe Magubane
Director General – Electricity
Department of Energy,
South Africa
Mohammed Abdelrahman
Energy Specialist
NEPAD Secretariat,
South Africa
Antonio Saide
Chairman
National Directorate of
Renewable Energies,
Mozambique
Bernard Osawa
Director – Renewables
Electricity Regulatory
Commission, Kenya
Hear from
BOOK NOW! online www.terrapinn.com/2010/cogenza | email [email protected] | phone +27 (0)11 516 4026 | fax +27 (0)11 707 8359
Produced by:
2 workshops, 1 day – Post-conference workshops: 15 September 2010
Sugar law, technology and advanced
OR
Energy policy and power purchase
bagasse generation agreements in Africa
www.terrapinn.com/2010/cogenza
Policy-making: the difference in 2010!
Hear the latest developments on power purchase agreements, feed-in tariffs
and electricity wheeling in the private sector
Source innovative IPP solutions just for you
Find out how you can translate the recent IPP policy challenges into opportunities
– your utility has no other choice but to buy your power
Sugar developments
Get new ideas around bagasse generation, sugar technology and energy pricing
in the sector
Yes! I am interested in Co-Generation World Africa 2010 Voucher code: A3 601207
c I would like to attend – please register me c My company would like to participate – please send me more information
Name ........................................................................................................................................................................................................................................
Job title ............................................................................................................Organisation ...................................................................................................
Address ....................................................................................................................................................................................................................................
Post code ..........................................................................................................Country ...........................................................................................................
Tel .....................................................................................................................Fax ..................................................................................................................
Email.........................................................................................................................................................................................................................................
Reply form Fax: +27 (0)11 707 8359
2
7
8
2

S
A

M
e
c
h
a
n
ic
a
l
E
n
g
in
e
e
r
´' THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
COVER STORY
working in Belgium and he suggested we ap-
proach Pretoria University’s mechanical engineer-
ing faculty to develop such a black-box,” explains
Fritz. “The challenge is to design an instrument
which, at a reasonable price, can be fitted to
every gearbox to constantly monitor its condition.
“It will pick up any malfunction and sound an alarm to
indicate that something is out of the ordinary in terms
of the specified running conditions for a particular
gearbox,” adds Fritz. “We’re close to finalising the
first prototype, developed specifically for the harsh
conditions that gearboxes in Africa operate under.
It will also help in situations where there simply
aren’t technicians with the qualifications to do proper
condition monitoring. We regularly come across
breakdowns on big mines where they don’t do any
condition monitoring at all, hence the breakdown.”
Leadership award
Hansen has in the past eighteen months landed
huge contracts with the power station projects
underway in South Africa which has increased
the company’s market share in South Africa sig-
nificantly. “A feather in our cap was getting the
2009 Marketing Leadership Award from Frost and
Sullivan for our increased market share to now lead
the South African market by having a 33.8% share
in term of helical gearboxes,” Fritz proudly states.
“We’ve all worked very hard on the big projects over
the past year and it has paid off. However, in retro-
spect we have also realised that you can easily shift
focus in such a situation and end up neglecting your
regular end-users. To prevent this from happening,
we’ve increased our staff complement specifically
so as not to lose touch with longstanding clients.”
Fritz Fourie, Hansen Transmissions, Tel: (011) 397-2495,
Email: [email protected]
Proper routine maintenance by professional technicians
will contribute to an extended gearbox life
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O ´o
The cost of an electric motor is relatively small compared
with that of the rest of the plant, but in terms of lifecycle
costs, electric motors add significantly to the overall run-
ning costs of a plant. Energy consumption makes up 95%
of the lifecycle cost of an electric motor and any saving in
this respect results in an accumulative saving over a period
of time.
POWER TRANSMISSION
“
SA Mechanical Engineer” speaks to Conrad
Pilger, sales and project manager at SEW
Eurodrive in South Africa about the range of
energy efficient electric motors they’re now
introducing to the South African market. “The energy
consumption of a motor has a decisive influence
on the follow-up costs of a drive system,” he says.
“Optimising the energy efficiency of each in-
dividual component and combining the drive
technology to match a specific application,
will achieve significant economic benefits.”
New technology
SEW Eurodrive is the first company in the world
to successfully implement die-cast copper technol-
ogy in mass industrial production. “This process
employs liquid copper technology to make the die
cast cage of the motor,” says Conrad. “The result-
ing range of motors is a compact, high efficiency
design at a highly competitive price resulting in a
payback time of less than a year in most cases.
“Moreover, the motor’s efficiency characteristics
have been proven in installations across the globe
where energy saving regulations have forced
industry to look for alternative technologies.”
Every possible way
The DR series is only being introduced to the local
market now because it hasn’t been a priority in the past
to optimise energy consumption in every possible way.
“We’ve always strived to bring energy efficient drive
solutions to the local industry through variable speed
drive technology and other refinements,” says Conrad.
“However, since the recent electricity shortage crisis
in South Africa, the demand for more optimisation
has grown and we decided to introduce the DR
range to the South African market so we can assist
our customers in achieving energy saving margins.
Calculated savings
“We’re not just saying this motor design will save
power and waste less energy, we’ve actually devised
a calculator whereby we convert the savings into
rands and cents so clients can understand what
we’re talking about,” adds Conrad. “We started
introducing the motor to some customers a couple
of months ago and it has been warmly received.
“Over a hundred have already been installed at various
customers to date and right now 80% of the motors that
leave our factory in Johannesburg are from the DR range.”
Global motor
The new motor range is a modular system for AC
motors, offering millions of drive combinations
that can be used in many different applications.
“Independent of the required energy efficiency
class, the whole range of DR motor options is
available in all efficiency levels,” says Conrad.
“The motor complies with international standards and
already meets the latest requirements of the IEC motor
standard. As it was designed with energy efficiency
classes from all over the world in mind, you could refer
to it as a global motor. It complies with IEC 60034,
NEMA MG1 and CSA C22.2 requirements as well.”
Energy ratings
The modular DR motor system comprises three
energy efficient motor variants (IE1, IE2 and IE3)
and offers an ideally matched brake concept as well
as encoders which are integrated in the motor. “By
combining all the different requirements, this design
Conrad Pilger, sales and project manager at SEW Euro-
drive in South Africa
DR range was to make it fully interchangeable with
existing gearboxes
New Electric Motors
´4 THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
type motors now come in for repairs, we introduce
customers to the new technology motors which
are easily fitted in place of the old ones in spite
of the new ones being more compact in design.”
New gearbox range
Officially the DR series of motors will be launched
to the broad industry at the Electra Mining show
in October, coinciding with the showcasing of
a new range of planetary gearboxes from SEW
Eurodrive. “We’ve already stocked up and the P-
series planetary gearbox is available right now,”
Conrad says. “It is a heavy duty planetary gear-
box that handles high torque at low speeds. The
speed reducer is a compact design that fits into
constrained spaces and we deliberately stocked up
enough to eliminate long lead times for delivery.
“With the introduction of our own range of energy
efficient electric motors, we’ve move closer to the
ideal of serving customers on a partnership basis,”
Conrad says in conclusion. “As a business partner
we want our customers to save money by playing a
role in selecting the optimum drive solution. It’s no
use running the latest in motor technology on an old
type of gearbox, for instance. Ultimately, many vari-
ables affect lifecycle costs and we want to assist our
customers in arriving at the best solution possible.”
Rene Rose, SEW Eurodrive, Tel: (011) 248-7000, Email:
[email protected], Website: http://www.sew.co.za
POWER TRANSMISSION
saves time and opti-
mises processes in
the areas of motor
selection, ordering
and logistics,” says
Conrad. “Additional
features such as
brake monitoring,
shaft centred hol-
low shaft encoder,
thermal motor pro-
tection, temperature
detection, air filters,
fans and backstops,
among other fea-
tures, can be added
depending on the
customer’s require-
ments.”
One of the main cri-
teria in the design
of the DR range was
to make it fully in-
terchangeable with existing gearboxes and other
applications already in the market. “It’s no use
fitting a new motor that will save you money, but
you then have to spend almost as much modify-
ing the application,” says Conrad. “As the older
We’ve actually devised a calculator
whereby we convert the savings into
rands and cents
Promech Publishing has a BEE
a of 97.2%
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O ´o
POWER TRANSMISSION
The challenge in achieving optimum power transmission in machinery is to find bearings that are mutually
compatible with all the power transmission components in a drive system.
“
SA Mechanical Engineer” speaks to Varma Parag,
SKF’s product manager, Power Transmission,
to talk about a range of power transmission
products now finding its way into the South
African market under the SKF brand.
“As we progress into the new millennium, custom-
ers the world over, are looking for better solutions.
Increasing the demand for a wider range of products
from fewer suppliers. With single sourcing, efficiency
goes up and transaction costs go down.
As bearings and power transmission equipment are
often found working together, we believe that power
transmission products, ideally compliment our exist-
ing product profile.”
Better performance
“Power transmission products play an important role
in overall bearing performance,” Varma says. “They
are the vital link between moving parts in equipment.
Industry as a whole spends about twice as much on
these products as it does on the actual bearings.
By creating our own unique range of power trans-
mission products,
we can now offer
products that are
well matched and
give engineers a
wide design choice
according to spe-
cific performance
and cost consid-
erations.
“Customers today
expect more from
suppliers than just
selling product. To
meet this trend,
SKF undertook a
thorough analysis of the market to determine customer
requirements,” says Varma. “It was first rolled out
in Europe where everybody welcomed the move and
now we’re extending the footprint to all corners of
the world. As far as I know, we’re the first bearing
manufacturer to consolidate the sales and supply of
power transmission products in this way.”
One brand
Bringing power transmission products under a single
brand offers significant benefits to end-users beside
the confidence that comes from a well-known brand.
“We can provide a convenient single supply source
for a wide range of products and services with a large
stockholding,” says Varma. “This, in turn, gives us
the opportunity to simplify logistics to end users and
reduce administrative work.
“SKF has a very sophisticated worldwide warehous-
ing and logistics systems through which power
transmission products can be supplied quickly. This
provides us with access to more than 8 000 power
transmission items and growing, enabling distributors
to keep smaller stocks so that less capital is tied up
in inventory.”
Making inroads
The programme is rigorously driven by SKF’s coun-
trywide distribution network, who are supported by
Varma and SKF’s engineering team. “Together we
make a concerted effort to assist customers with
solutions to power transmission problems. “Power
Varma Parag, product manager,
power transmission, SKF
More Than Just
Bearings
´o THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
POWER TRANSMISSION
transmission and bearings work together in many
industries including food and beverage, oil and gas,
pulp and paper, textile, steel, packaging, mining,
mineral processing, agriculture, material handling
and power generation,” Varma explains.
Although the division is relatively new to the South
African market, they have already made inroads in
some applications locally. “One of our long-stand-
ing customers has had a problem with a chain in
a very corrosive environment for many years,” says
Varma. “They fitted one of our stainless steel chain
products eight months ago, and they haven’t had a
problem since.”
The product range
The power transmission range covers the most com-
mon types of products which can be divided into six
main categories; belts, pulleys, chains, sprockets,
couplings and bushings and hubs. “The range is quite
comprehensive. Pulleys, sprockets and couplings of-
fer different fixing methods. While chains, coupling
elements and belts offer some material choices,”
explains Varma.
“There are also those items that have special
characteristics as is required for very specific
types of applications.” All the power transmission
products are identified by an SKF specific desig-
nation prefix. In addition, the designation follows
international standards for easy recognition and
cross-referencing of the parts.
“So far the industry has responded very positively
to these products and has welcomed the concept,”
Varma says in conclusion. “Future expansion
along these lines may very well include certain
gearboxes and the acquisition of associated com-
ponents as well.”
Varma Parag, SKF, Tel: (011) 821-3500, Email: Varma.
[email protected], Website: www.skfptp.com
It was first rolled out in Europe where everybody
welcomed the move
�
�
�
�
�
Lubrication system filtration
Hydraulic filtration - full range
Bulk fuel and oil filtration
Elements for competitor housings
System accessories
Industrial Hydraulic
Africa’s mining, construction, transport and agriculture industries.
Every day, customers all over the world rely on
Donaldson filtration products to extend the
operating life of equipment and keep potentially
toxic working environments safe. We also
purify air for a range of critical manufacturing
applications. And here in Africa’s harsh,
sometimes punishing environment, our
filtration technology still performs under
demandingconditions. �
�
�
�
�
�
Engine air cleaner assemblies
First fit replacement elements
Intake and outlet accessories
Oil, fuel and transmission filters
Fuel filter water separators
Coolant filters, hose and coolant
Engine and Vehicle
�
�
�
�
�
�
Industrial filtration
Process filtration
Adsorption driers
Compressed air filtration
Condensate management
Water chillers
Compressed Air
�
�
�
�
�
�
Dust and fume control
Control room/ambient air filtration
Complete installations
Testing, inspection and service
Spares, cartridges and filterbags
Gas turbine filtration
Industrial Air
Johannesburg (011) 997 6000 Cape Town (021) 530 2900
www.donaldson.co.za
Donaldson breathes life into...
Donaldson breathes life into...
Engineer Placements
Professional opportunities
Our job board continues to display a wide variety of
excellent job positions that you can review and apply
for on- line. Keep your credentials on our secure and
confdential database, update them at any time.
We keep in touch with you.
www.engineerplacements.com
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O ´¯
The Key is Stocking Up
Gone are the days when customers kept a legion of spare parts in their warehouses. More and more, suppliers
are stocking critical spares for their key customers. The willingness of suppliers to partner in such a way is
now becoming the differentiator that lands them the business over extended periods of time.
enterprise management system that links all the
branches and manufacturing plants across the
globe, source components and solutions to all
valve-related problems very effectively,” says Keith.
“An example is a trial we’re currently running with
a local client. We’ve installed a flow meter in a very
challenging application that has been troubling this
particular client for many years. The flow meter
is fitted with a blue-tooth module that communi-
cates directly to our German engineers through a
modem. This allows them to constantly monitor
the performance of the test installation, analyse it
and then make recommendations to the client in
terms of settings to achieve optimum performance.”
Modular concept
Gemu’s wide range of valves in all sizes and type
are modular in design and can systematically
be enhanced to suit all budgets. “Some start off
with a manual valve system, for instance, which
they can easily change to an actuated system,”
says Keith. “It’s simply a matter of removing the
manual works on top of the valve while in the
line and then fitting the actuated control system
in its place. Then you just connect the power
and it’s ready for control through a PLC system.”
PIPES PUMPS & VALVES
Service distinguishes the best from the rest
Keith Hedges branch manager of Gemu Valves Africa
The Gemu K490 chemical butterfly
valve has found a solid footing
in South Africa
T
his is the business philosophy of Keith Hedges,
branch manager of Gemu Valves Africa.
To learn more, “SA Mechanical Engineer”
visits him at the company’s new premises
in Northlands Business Park near Randburg. “As
an importer of a vast range of valve solutions it
is impossible to keep the full range available at
all times, but you quickly learn what the market
requirements are and then stock up accordingly,”
he says. “Service distinguishes the best from the
rest and having the right product available when
someone is asking for it, is what service is all about.
New premises
“We’ve now set up a solid infrastructure and have
stocked up at the new premises,” Keith adds. “The sales
team is supported by a technical engineer and our lo-
gistics have been set up with enough vehicles and store
managers to ensure quick delivery throughout South
Africa. We’re planning to extend our offering to include
a facility that offers servicing at accredited service
levels in terms of calibration and testing equipment.”
Although Gemu products are well known in the phar-
maceutical and food processing industries in South
Africa, the local branch,
which is a direct subsidiary
of the head office in Ger-
many, has made its mark on
the industrial sector as well.
“We have long-standing re-
lationships with some of the
major corporate companies
in the petrochemical and the
mining industries, but we’re con-
stantly looking at the needs of other
sectors as well. Our range of products,
which includes valves, actuators, and a wide
choice of measuring and control systems,
is used in specialised applications such
as highly-corrosive chemical environments
as well as highly-abrasive applications
such as slurry pumping. We’re now also
targeting the power generation industry
because our products can be used in many
applications in this developing market.
Global network
“The benefit of being part of a global
company is that we can, through our
´8 THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
PIPES PUMPS & VALVES
Spare parts of the
popular components
used in the South
African market
The valve bodies are made of a variety of materials
ranging from cast iron to stainless steel and can be
coated inside and out for protection against cor-
rosion and wear. Adds Keith, “The most common
lining is a rubber compound, but we also have a
stainless steel body with a PFA lining which is not
commonly found. This coating is ideal for very
aggressive atmospheric conditions combined with
a highly corrosive medium in the line. Germany
can, for example, manufacture very special valve
bodies which are machined from a solid block
of stainless steel on multi-axis CNC machines.”
Unique coating
One of products that has found a solid footing in South
Africa is the butterfly valves. “We’ve had exceptional
success in South Africa with the Gemu K490 chemical
butterfly valve,” says Keith. “Feedback from customers
has been overwhelming. It is used in very aggressive
chemical applications and is unique in that it not
only has a PFA over-moulded disk, but also has a
PTFE based liner which is not a basic PTFE grade.
“The layman’s term for it is Ultrafon or TFM and consists
of a special structure of PTFE which increases the
density much more effectively than ever before. Anyone
who knows chlorine, know that PTFE resists chlorine
penetration, but eventually it does find its way through.
This liner prolongs that penetration period even more.”
Keith says in conclusion. “We have the ad-
vantage that Gemu is an ISO certified man-
ufacturer which, alone, gives our sales staff
and customers confidence in our products.”
Keith Hedges, Gemu Valves Africa, Tel: (011) 462-7795,
Email: [email protected], Website: www.gemu.
de
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O ´O
PIPES, PUMPS & VALVES
I
TT Water & Wastewater has addressed these
issues by increasing its rental fleet with the
addition of five Godwin self-priming diesel
pumps.
“Diesel power means there is no need for electric-
ity, which is often a complication at mining and
construction operations,” Scott Gilchrist, rental
manager at ITT Water & Wastewater, points out.
“Conventional solutions rely on electricity for
operation, generally running off a generator set,
however the Godwin self-priming diesel pumps
are capable of performing better than most pumps,
including dewatering applications where solids are
present.”
In fact, the pumps have extensive application flex-
ibility, handling liquids with solids up to 35 mm
in diameter.
Optimum flexibility
The pumps can handle a range of different media,
including raw sewage, slurries with solids and other
liquids, providing optimum flexibility in various
environments.
“The pumps can handle 70 litres per second at a
Diesel Power
Now, for the first time, you can rent a self-priming diesel
pump on local shores.
maximum head of 130 metres at their best effi-
ciency point,” Scott says. “At shut-off, they handle
150 metres head, so that units can be used at a
far greater depth in the opencast pit, an important
consideration for our South African conditions. At full
flow, they manage 100 litres per second obtaining
heads of 80 metres,” he says.
Advantages
The pumps can run for up to seven hours at a rated
capacity of 138 kW at 2 200 rpm, the fuel tank
being able to hold 300 litres. The unit itself is 3
200 mm by 1 303 mm with a height of 1 800 mm
and a dry weight of 3 200 kg.
A further advantage is that its maximum sound level
is 81 dbA at 2 400 rpm as the Godwin HL 150 M
Hushpac is a completely soundproofed unit.
“It is an all cast-iron construction, with a cast
chromium steel impeller. The continuously oper-
ated Godwin venture air ejector priming device
features a belt-driven air compressor which requires
no form of periodic adjustment or control, adding
to the simple maintenance characteristics of the
equipment.”
Furthermore, its dry running, high pressure oil
bath mechanical seal has abrasion-resistant, solid
silicon carbide interfaces. The solids-handling,
swing-type non-return valve features a renewable,
flexible rubber seat.
“The pumps are available for hire directly from ITT
Water & Wastewater as well as from our distributor
network,” Scott concludes.
ITT Water & Wastewater , Lanelle Wheeler, Tel: (011) 966
9300, www.fygt.co.za
The pumps can handle a range of different media,
including raw sewage, slurries with solids and other
liquids
Diesel power means there is no need for electricity
'O THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O '´
POWER GENERATION
Produced by:
PROMECH PUBLISHING,
P O Box 373, Pinegowrie, 2123
Republic of South Africa
Tel: (011) 781-1401
Fax: (011) 781-1403
Email: [email protected]
Website: www.promech.co.za
Managing Editor Susan Custers
Editor Kowie Hamman
Advertising Pauline Bouwer
Circulation Catherine Macdiva
DTP Zinobia Docrat/Sanette
Lehanie
Disclaimer
PROMECH Publishing does not
take responsibility for the
opinions expressed by individuals.
Printed by:
Typo Colour Printing
Tel: (011) 402-3468/9
Copyright
All rights reserved. No edi-
torial matter published in
“Power Generation Today”
may be reproduced in any
form or language without
written permission of the
publishers. While every effort
is made to ensure accurate
reproduction, the editor, au-
thors, publishers and their
employees or agents shall
not be responsible or in any
way liable for any errors,
omissions or inaccuracies
in the publication, whether
arising from negligence or
otherwise or for any conse-
quences arising therefrom.
The inclusion or exclusion of
any product does not mean
that the publisher or editorial
board advocates or rejects its
use either generally or in any
particular field or fields.
Power of Water
The main reason South Africa does not have many hydro-electricity generat-
ing installations is we’re a relatively dry country with only a few rivers suit-
able for hydroelectric schemes. This is why local hydro schemes operate
slightly differently from the traditional way whereby the natural flow of water
is utilised to generate electricity.
T
he only two hydro-electric generat-
ing plants in South Africa, Palmiet
near Cape Town and Ingula, cur-
rently under construction in the
Drakensberg, both use pumped water
that has been stored to generate power
when most needed. These plants can
respond rapidly to increases in demand
for electricity and are usually used where
water resources are scarce. Water that
has been used to generate electricity is
pumped back to a storage reservoir to
be used again.
Local projects
Palmiet has a dual role. Not only does
it generate 400 MW of power into the
Eskom national grid at peak times, but
it also forms part of an inter-catchment
water project that transfers much needed
water to Cape Town. This facility has
been operative for a couple of years now
while the Ingula scheme is expected to
be fully operational by 2013.
Eskom’s media desk provided “SA Me-
chanical Engineer” with the latest update
on Ingula scheme, a scheme that will have
a capacity of 1 333MW and an energy
storage capacity of 21 000MWh.
Ingula
Located about 23km north east of Van
Reenen, within the little Drakensberg
mountain range, Ingula involves an upper
reservoir in the Free State, an underground
power tunnel complex and power station,
and a lower reservoir in KwaZulu Natal.
The distance between the upper and lower
reservoirs is about 6km and the elevation
difference is approximately 470m.
The upper dam, named Bedford Dam, is
located on the Wilge River which flows into
the Vaal River system and it is a concrete-
faced roc-fill embankment dam about 50
metres high forming a reservoir with a total
volume of 22.6 million cubic metres (MCM)
and an active storage of 19.3 MCM. The
lower dam, the Braamhoek, is situated on
the Klip River which flows into the Tugela
River. It is a roller-compacted concrete dam
about 40m high forming a reservoir with a
total volume of about 26.3 million cubic
metres (MCM) and active storage of 21.9
million cubic metres (MCM).
The power plant
The underground power house complex
consists of machine hall, a transformer
hall and associated tunnels, shafts and
A view from the northeast towards the position for the proposed bridge and the temporary bypass
'' THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
caverns. The machine hall will house reversible
Francis-type pump/turbines, coupled directly with
generator/motors, each with a rated generating
capacity of 333MW. The rated generating head
is approximately 434m.
The pump/turbines will be connected to the upper
reservoir by twin concrete-lined headrace tunnels
and pressure tunnels and shafts which are steel-
lined over their lower part. Steel-lined extended
draft tubes and a single concrete lined tailrace
tunnel will connect the pump/turbines to the lower
reservoir. Headrace surge shafts and tailrace surge
chambers will also be provided.
How it works
The dams, 4.6 km apart, are connected by these
underground waterways that run through an
underground powerhouse which houses the four
333MW pump turbines. During times of peak
energy demand, water is released from the upper
dam through the pump turbines to the lower dam
to generate electricity. During times of low energy
demand, the pump turbines are used to pump the
water from the lower dam back up to the upper dam
to store the water until it is needed again.
Latest news is that Ingula’s reservoirs are nearing
completion. Both dam walls have reached their
maximum height and major civil works are winding
down. At the Bedford Dam, the upper reservoir, a
major milestone was reached when the first concrete
face slab panel was placed in May this year. On
completion, the massive slab, which is only 300mm
thick, will cover an area of around three hectares.
It consists of 32 panels, each 15m wide while the
longest panel is a mammoth 81m long.
Challenges
To ensure that no water leakage occurs where a slab
POWER GENERATION
1
0
2
9
0
8
/
1
Full speed ahead with
Mobil Marine Lubricants
The superior performance of Mobil Marine Lubricants like Mobilgard
oils can help extend engine life and deliver peak performance. Mobil
Arma Wire Rope Lubricant, Mobilith greases and the energy-saving
Mobil SHC series provide a full range of supporting products. For more
information call the Engen Customer Service Centre on 08600 36436
or visit www.Engen.co.za or www.mobil.com
102908/1 Engen Mobil Full Speed Ahead 130x176.indd 1 7/30/10 3:00:40 PM
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O 'o
POWER GENERATION
^n |nnovat|ve
so|ut|on to
suooort be|t dr|ves
SKF Be|t Tens|on Svstem
CWT?^fTa^U:]^f[TSVT4]VX]TTaX]V
lt |s common know|edoe that be|ts need to be chanoed
reou|ar|v and shou|d have the correct tens|on and
a||onment. 0ood be|t ma|ntenance demands t|me
and effort.
The SKF Be|t Tens|on Svstem orov|des a qu|ck and easv
be|t ma|ntenance so|ut|on.
B:5B^dcW0UaXRP?ch;X\XcTS
Te|. -2¯ ll 82l S500. Fax. -2¯ ll 82l S50l
Ema||. sa|es.zaCskf.com. Web. www.skf.co.za
1T]TcbU^acWTQT[ccT]bX^]bhbcT\)
^ssured reoeatab|e ma|ntenance qua||tv -
0u|ck and re||ab|e tens|on checks -
Easv orevent|ve ma|ntenance -
Safe. s|mo|e and fast be|t reo|acement -
AT[XPQX[XchU^acWTfW^[TbhbcT\)
Reduced costs. due to oro|onoed be|t ||fe -
H|oher uot|me of the who|e svstem due to |ess t|me-consum|no -
breakdowns
Less v|brat|ons and therefore a|so h|oher eflc|encv. due to correct -
be|t tens|on
Easv ma|ntenance orocedure therebv m|n|m|s|no the r|sk of -
|njur|es
panel joins another and its foundation, a double
water-stop system is used between slabs. A strong
but flexible rubber strip and pre-folded copper sheet
is inserted along the edges, allowing the panels
to move without cracking. Slight movements are
expected as the almost one million cubic metres of
rock fill settles after construction and as the dam
fills with water.
In winter the area is battered by wind speeds of up
to 140km per hour and temperatures drop as low
as -10°C, but the extreme freeze-thaw conditions
were taken into consideration when the face slab
concrete mix was designed. To prevent cracking, a
special chemical (air entrainer) was mixed into the
concrete, creating tiny air bubbles throughout the
concrete paste. These air bubbles act as capillary
breaks and provide space into which the pressure
exerted by freezing water can be dissipated.
One a week
Working against the steep face of the wall is chal-
lenging and requires special equipment. One of these
is a slipform screed which is slowly pulled upwards
on the top of side shutters which move at a rate
of between two to four metres per hour. Working
on two platforms, workers can safely consolidate
the concrete by means of poker vibrators and do
finishing-off work.
Once a panel is started, work must continue until it
is completed as no construction joints are allowed.
With the longest slab being 81m long, it takes up to
40 hours of continuous concrete pouring at times.
It’s expected that the face slab concreting will take
about six months, translating into finishing at least
one slab every week.”
Progress
Progress on key projects in the underground works
is on schedule. In the transformer hall, the central
heading is complete and the installation of cable
anchors is in progress. The main drainage excava-
tion gallery has now reached the 51% mark while
one of the penstocks is complete and the other is
at 35% complete. Work on the surge chambers is
at 5%. Downstream from the construction site, the
tunnel stands at 47% and upstream, work on the
tunnel has reached the 34% mark.
Protecting biodiversity is one of Eskom’s main
responsibilities at Ingula. An Environmental Man-
agement Programme is in place to manage the
day-to-day objectives, but also ensures the rolling
out of long-term conservation objectives.
Dikatso Mametse, Eskom Media Desk, Tel: (011) 800-
3304/3309, Fax: (011) 800-3805, Email: mediadesk@
eskom.co.za
'4 THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O 'o
'o THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O '¯
POWER GENERATION NEWS
Nuclear applications
Baldor has published a highly informative brochure detailing
the extensive range of motors that it produces for nuclear
applications.
The product line is the largest available from a single source
and encompasses over 250 000 ratings, types, styles
and sizes, from 200 W to 11 000 kW. The brochure is a
key information resource for anyone seeking to install or
replace a motor in a nuclear power plant, or in a nuclear
fuel reprocessing or radioactive waste management facility.
Typical uses include driving fans, pumps, compressors and
motorised valve actuators.
The brochure details all the motors that Baldor produces
for use in Class 1E (safety related) Mild and Harsh Environ-
ments, as well as radiation-resistant motors for operation in
non-Class 1E commercial or industrial environments. Every
Addressing sustainability
Addressing the increased pressure companies are fac-
ing to engage in sustainable business practices and to
track their carbon reduction compliance now and into
the future, Epicor Software Corporation and Village Green
Global have formed a strategic alliance to extend Epicor’s
next-generation enterprise resource planning (ERP).
The suite offerings will provide companies the ability to identify,
analyse, audit, track, manage, benchmark and report on carbon
emissions, environmental impact and energy consumption.
Village Green specialises in enterprise carbon accounting, using
an internationally recognized system for carbon analysis and
trading. The company’s services help deliver scalable reporting
for carbon accounting around electricity use, water consump-
tion, transportation, natural gas, waste and other factors to
find ways to save energy and money and enable organizations
to implement and maintain sustainable business practices.
“We are pleased to partner with Epicor to help bring enterprise
carbon accounting solutions to their customers. Together,
our goal is to assist these companies become more energy
efficient, reduce costs and address increasing environmental
regulations such as Australia’s National Greenhouse and Energy
Reporting Act, Europe’s Environmental Liability Directive (ELD)
and Restriction, Evaluation, and Authorization of Chemicals
(REACH) regulation, and eco-design directive for Energy-using
Products (EuP Directive), and proposed regulations from the
U.S. Environmental Protection Agency (EPA) to limit green-
house gas emissions from industry,” says Doug Smith, founder
and CEO of Village Green Global. “There is natural synergy
between Epicor’s next-generation ERP and our enterprise
carbon accounting, which will empower businesses with a
comprehensive solution to develop green business practices.”
Village Green maintains a database of energy values for
approximately 30 000 devices and its solutions have been
used in more than 6 000 environmental audits worldwide.
www.epicor.com
1547/10
DO YOU HAVE:
º 880 0|k|l lN0|Nll8|N0/lll0¡8|0âl lN0|Nll8|N0/08lM|0âl
lN0|Nll8|N0/Ml08âN|0âl lN0|Nll8|N0P âN0/08
º 8¡l08 0|k|l lN0|Nll8|N0/lll0¡8|0âl lN0|Nll8|N0/
08lM|0âl lN0|Nll8|N0/ Ml08âN|0âl lN0|Nll8|N0 Pl08 2 flâ88'
P08¡-00âl|I|0â¡|0N lKPl8|lN0lP âN0/08
º 8l0|8¡8â¡|0N N|¡8 l08â â8 â P80Il88|0Nâl lN0|Nll8 08
¡l08N0l00|8¡P
eThekwini, South Africa’s leading Metro, invites you to apply to join our database of highly skilled,
self-motivated and energetic Engineers and Technologists. If you are passionate about making a
difference to service delivery we are looking for YOU! Exciting opportunities exist to live and
work in the Durban area and enjoy the all year round advantage of “the warmest place to be”.
Applicants will enjoy a competitive salary package with a range of benefits (such as Pension
Fund, Medical Aid, 13
th
Cheque, payment of relocation expenses) and a supportive training
environment.
Applications are required in writing and should include a Curriculum Vitae, copies of all
qualifications, registrations, training certificates, all academic results and an identification
document.
Applications must be forwarded by email to [email protected] for the attention
of the Senior Manager of Human Resources (Engineering).
N0 |00ä l0tWzt0 l0 t0c0|ä|00 r00t äz|000 z00||czl|00.
00Ml l0|N 08 |N ¡8l 80NI
• NOTICE FOR THE ADVERTISED POSTS: Priority will be given to applicants who are under-
represented in terms of race, gender and disability within the occupational level of the respective
posts. A work sample and/or psychometric tests may be undertaken as part of the selection process.
• AREAS OF WORK: Any employee may be required to be deployed and report to any
of the offices, depots or workplaces of the Municipality within its area of jurisdiction.
• PLEASE NOTE: Canvassing of Councillors and Officials in respect of these positions will lead
to the disqualification of the applicant.
VACANCIES
nuclear motor component, from the motor hardware to the
rotor and stator, fully complies with the appropriate IEEE and
NUREG standards governing nuclear power plants.
Class 1E nuclear motors are available in a wide range of
NEMA and IEC frame sizes, and are designed, manufactured
and tested under a nuclear quality assurance program in
compliance with the NRC (United States’ Nuclear Regulatory
Commission) 10CFR50 Appendix B standard. Class 1E mo-
tors for use in a harsh environment are qualified for a total
radiation dosage of 2 x 106 Gy over a 40-year life; those
intended for use in a mild environment are qualified for a
total radiation dose of 1 x 102 Gy over the same period.
Baldor UK Ltd, [email protected]
'8 THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
NUCLEAR INSTITUTE (SA BRANCH)
The South African Young Nuclear Professionals Society (SAYNPS) in conjunction with Department of Energy
hosted the first International Youth Nuclear Congress (IYNC2010) on the African continent from 12 to 18 July
2010 in Cape Town. The event was supported by many local organisations including Necsa, iThemba Labs
and the National Nuclear Regulator and by many international corporations, not least the International Atomic
Energy Agency.
International Youth
Congress – Cape Town
T
he conference was opened by the Minister
of Energy, Ms Dipuo Peters. It attracted
about 280 delegates comprising young
nuclear professionals and experts from 31
countries in five continents with the exception of
South America. These delegates come from various
science and engineering disciplines as well as the
communications and legal sectors.
Throughout the week the young professionals shared
their work and activities through 126 papers pre-
sented from different perspectives which included,
scientific, political, public and corporate views to
provide balanced and comprehensive discussions
about the nuclear technology. The conference
emphasized the importance and the benefit of
the safe usage of Nuclear Science and Technology
within the regulated environment.
The main highlights were discussions on nuclear
safety and public acceptance of nuclear technology.
Various young generation networks made presen-
tation on the status of public communication and
education in their countries and the challenges faced
by the industry as well as strategies used to reach
out to the public. The Belgian Young Generation
gave a very interesting example on public com-
munication and education. They reported on their
reach out activity where they set up an exhibition
stand at a rock festival with a body monitor which
measures the natural radiation in human bodies.
The report describes the amusement and surprise
shown by the public at the results of their evident
“radioactiveness”.
With the increasing energy demand the South African
Government is considering an energy mix which
includes an ‘extensive’ nuclear component as stated
in the energy policy approved by Cabinet in 2008.
With plans to increase the contribution of nuclear
energy to the national grid, it was interesting to see
a large number of local young professionals and
students actively participating in the discussions
of new nuclear power plants. The nuclear policy
ignited the interest in youth to be part of the nuclear
renaissance. The outcome of government’s IRP2
process is now eagerly awaited by spirited youngsters
whose future in nuclear depends on it.
Awards and honours
South Africa won two of the seven awards in the
Technical program for the best paper and poster
presentation. These were won by Hermann Becker
from the University of Cape Town and Yvotte Brits
from Necsa. The remaining awards were won by
Germany (3), Australia (1) and France (1). This
demonstrates that the local youth are on par with
the rest of the world when it comes to nuclear.
However, we still need to encourage other youth to
take up nuclear studies and undertake research.
Mrs V Msutwana-Qupe and Mr T Maqubela were
honoured by the Minister of Energy on behalf of
SAYNPS for their contribution in opening the door
for SA youth to participate in the International Youth
Nuclear Congress. They both played an important
role in the establishment of SAYNPS.
The next IYNC conference (IYNC2012) will be
hosted by the North American Young Nuclear
Generation in Charlotte.
Patience.Segonyane, www.saynps.co.za, www.iync.org,
Email: [email protected]
Mosa Rasweswe
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O 'O
COMPUTERS IN ENGINEERING
T
he physical object can be measured us-
ing 3D scanning technologies like CMMs
(coordinate measuring machines), laser
scanners, structured light digitisers or
computed tomography. The measured data alone,
usually represented as a point cloud, lacks topo-
logical information and is therefore often processed
and modelled into a more usable format such as a
triangular-faced mesh, a set of Nurbs surfaces or
a CAD (computer-aided design) model.
CMM
To learn more about CMM equipment and its practi-
cal application, “SA Mechanical Engineer” speaks
to Bob Metcalfe, director of iQlaser, a company
that specialises in laser scanning services as well
as supplying CMM equipment to the South African
market. “We’ve done everything, from scanning a
saddle, to footwear, complex impellers for turbo
machinery and even mining tunnels,” he says.
“Our measuring equipment ranges from
laser scanners to portable touch-probe
arms with the latest addition being pho-
togrammetry equipment which, through
triangulation, combines photographs
with metrology to produce 3-dimen-
sional coordinates from two-dimensional
photographs.”
Reverse engineering
Reasons for reverse engineering are
numerous. It can be done to check
interoperability of machines. Very often
it is done because documentation for
machines has been lost, or was never
written. It is frequently used for product
analysis to examine how a product works,
what components are used and to identify
potential patent infringements.
RE is an accurate way to update the CAD
model of a machine in order to match
an as-built condition. It is regularly used
in military or commercial espionage to
learn about an enemy or competitor’s
latest research by stealing or capturing
a prototype and dismantling it. Many
manufacturers also use RE for the re-
moval of copy protection and thereby
circumvent access restrictions so that
they can create unlicensed duplicates
of the machinery.
On the upside, RE can help to gain com-
petitive technical intelligence in order
to understand what a competitor is actually doing
compared with what they say they’re doing. RE is
also used to purely to satisfy curiosity or simply to
learn from others’ mistakes.
What’s
Actually
in There?
Reverse engineering not only means
you can put together plans of old
equipment and plant for which there
no longer are design drawings, but
you can also validate design drawings
against their real-life counterparts.
The reverse-engineering (RE) process
involves measuring an object and then
reconstructing it as a 3D software
model.
Bob Metcalfe with the LS Laser Scanner
Documentation for machines has been lost, or was never
written
COMPUTERS IN ENGINEERING
oO THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
Translating data
“One of our products is a software package called
Geomagic Studio with which you can digitally re-
construct an infinite variety of complex real world
shapes more quickly and
easily than ever before,”
explains Bob.
“Using 3D scan data of
these objects, you’re able
to create accurate models
that capture either the de-
sign intent or the as-built
part. This includes product
design, re-engineering of
parts and mass customisa-
tion to engineering analysis,
rapid prototyping and digital
archiving. It opens up a new
world of possibilities by
bringing your physical parts
into the digital realm.”
Mining
A practical example of a
typical local application of
CMM comes from the mining
industry. “The introduction
of the FARO Laser Scanner
COMPUTER IN ENGINEERING
A saddle scanned to produce a 3D CAD model
Understand what a competitor is actually doing
compared with what they say they’re doing
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O o´
An impeller scanned for reverse engineering
into the South African market opened up
exciting new possibilities for improvements
in the efficiency of planning new mining
projects and in facilitating easy applica-
tion of structural modifications to existing
mine tunnels,” explains Bob. “This scanner
generates photo-realistic 3D grey-scale
images of the environment surrounding the
scanner within a radius of 76 metres. The
images comprise 28 million pixel points
each recorded with their own specific
XYZ coordinates relative to the scanner’s
position in that space.
“Phase-shift measuring electronics allow
these images to be collected extremely
rapidly at rates of 250 000 points per
second so that a scan is created in less
than four and a half minutes,” says Bob.
“Using surveyed references points, it is
possible to locate the scans, referred to as
point clouds, precisely within the mine’s
geo-reference coordinate system and therefore a full
3D model of a mine tunnel complex can be formed
by compiling a series of point clouds.”
Two-fold
The benefits of this type of approach are two-fold.
“Firstly the images represent a permanent record of
They can determine more accurately how thick the lining
is that has actually been applied
COMPUTERS IN ENGINEERING COMPUTERS IN ENGINEERING
the mine structure at the time of scanning and can
be used to compare against similar images generated
at a later stage in the life of the mine to observe
o' THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
rock movement, break-out and structural changes
that may have been implemented subsequent to
the initial tunnel blasting,” says Bob.
“Secondly, the images can be interrogated in the
comfort of an office environment and away from
the harsh working conditions encountered under-
ground.
“On one mine, for instance, they use this system
to check the thickness of the layers of lining that
subcontractors spray onto the walls of the tunnels,”
adds Bob. “Previously the mine simply had to take
the word of the contractor as to the thickness of the
layer and pay accordingly, but now they do a scan
before and after. By comparing the two images,
they can determine more accurately how thick the
lining is that has actually been applied.”
Detail
CMM equipment is often used to align large ma-
chinery like power station turbines and generators,
but a particularly interesting job for iQlaser right
now is ‘mapping’ an entire aluminium smelter plant
in CAD from the biggest to the smallest piece of
equipment. “To measure intricate machinery, we
often use a combination of the laser scanner and
the touch-probe system in order to produce CAD
data in fine detail of the exterior and interior of a
machine and its components,” says Bob.
“Although laser scanning works on a ‘line-of-sight’
principle, it can even be mounted on a machining
centre permanently in order to ‘keep an eye’ on the
wear rate of a tool for quality control purposes.”
Bob Metcalfe, iQlaser, Tel: (011) 659-0346, Email: bob@
iQlaser.co.za
The Laser Scanner on its tripod
COMPUTER IN ENGINEERING
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O oo
“
SA Mechanical Engineer” phoned
local companies, searched the
internet and spoke to several
end-users who are up in arms
about the price of toner and ink re-
placement cartridges, especially when
they cost more than the printer itself.
And it seems that printer manufac-
turers are not moved by the outcry
about a product that costs ten times
more per gram or millilitre than the
most expensive caviar or perfume in
the world.
Liquid gold?
The Mnet actuality programme, Carte
Blanche, delved into the matter com-
paring the price of fuel at R8 a litre,
or perfume at R4 000 a litre, against
that of printer ink that comes in at a
staggering R20 000 a litre. That’s what
it costs if you buy an OEM product. And
no, it does not contain gold dust.
One journalist wrote: ‘Printer ink is
one of the most expensive thing in the world when
you break down how much it costs per millilitre.
So why does it cost so much? Simply put, because
We are Being Ripped
Off
Are South African’s, like the rest of the world, being ripped off when it comes to the price of toner and ink
cartridges? The answer is a definite Yes! In fact, South African’s are doubly cheated as the already-inflated
price of toner and ink jet cartridges is much higher here than the exact same product overseas.
they can.”
Making up the loss
The main manufacturers are not responding but we
found one comment on the internet trying to justify
the business model they all basically follow. “The
dynamics in terms of the cost of the cartridge needs
to be understood,” says one manufacturer. “As a
consumer, I wouldn’t be looking at it in terms of what
the cost is per litre or per gram, it’s about the yield
that it can deliver. We typically don’t make money in
terms of bringing the hardware to the market and in
some instances we are investing in getting that printer
there. So if the consumer after a short period of time
says, ‘I don’t like this,’ and ditches it, it’s been an
expensive exercise.”
Printer manufacturers argue they are pricing the hard-
ware at a loss so that the printer sells and so they
make up for it with cartridge sales. There are generic
replacement cartridges on the market at a lower cost
than the OEM’s, but everyone we spoke to is reluctant
to use substitute products because they damage the
printers by clogging the print head on ink printers, or
The comparison he supplies speaks for itself
Example 1:
The total costs calculated over five years, 15 000 pages per month,
20% density, A3 page, including initial price of printer and all
consumables except paper.
Line Printer (500LPM, 24hr duty cycle) cost = R39 768
Versus
Laser printer (50ppm, A3, mono laser printer) cost =
R589 444
Example 2:
The total costs calculated over five years, 5 000 pages per month,
20% density, A4 page, including initial price of printer and all
consumables except paper.
Dot Matrix Printer (80 column, 570cps printer) cost =
R129 580
Versus
Laser Printer (28ppm, A4, mono laser printer) cost =
R1 017 066
COMPUTER IN ENGINEERING
o4 THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
the drum on laser printers.
Insult to injury
Sounds a bit like the cellphone industry
where you get the phone for ‘free’ but
the minutes cost plenty. Here, of course,
there is a lot more technology in a phone,
a lot more functionality, a lot more infra-
structure required and it doesn’t usually
last less than a year and cost so much
to fix it’s not worth the trouble.
To add insult to injury, the local cost of
some original cartridges is much higher than the
same brand and model in the United States. The
67739 Hytec HFT Filtration.indd 1 7/13/10 9:12:12 AM
companies we interviewed seemed to be complacent
by simply accepting it as one of those things. But
everyone’s ears twitched when we suggested there
might just be an alternative available.
Most documents being printed are purely to have
something clearly visible on paper.
They are not printed for presen-
tation purposes and so do not
require the neat clean finish of a
laser printer. Why then not use a
line printer, or even a dot matrix
printer for that matter?
An alternative
“SA Mechanical Engineer” speaks
to Rodney Bartman of Roan Sys-
tems who compares the long term
costs of printing using different
types of printers on a calculator
they specially developed for this
purpose. “Our clients who have
converted to printing all their
everyday internal printing on line
printers will never look back, we’ve
saved them millions in printer
consumables,” he says. “Many
companies do not consider lifecycle
costs and don’t know what their
printers cost them over the long
term. They buy purely on initial
acquisition outlay but we’ve proved
over and again that substantial
costs can be saved by using dif-
ferent print technologies.”
Undoubtedly the price war in ink
and laser cartridge replacement
is here to stay in spite of generic
replacements getting better and
better all the time. As long as
everyone is prepared to pay for
the luxury of laser-printed docu-
ments for everything they print,
the price just won’t come down.
For those who are serious about
lifecycle costs, there may be a
way out.
Rodney Bartman. Roan Systems, Tel:
(011) 462-8880, Email: rodneyb@
roan.co.za
As a consumer, I wouldn’t be looking at it in terms of
what the cost is per litre or per gram
COMPUTER IN ENGINEERING
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O oo
SAINT
A
dmittedly, new NDT methods have been devel-
oped to improve on the “old school” methods,
for example digital radiography, tomography,
thermography and phased array to name a few.
The question is will the “old school” NDT method of
dye penetrant testing become redundant, forgotten and
replaced with a technology advanced method?
The honest answer is we don’t know, but at the moment,
dye penetrant testing still has a very strong foothold.
Many power stations, mines, pulp manufacturing plants
and the like are rapidly aging and require fatigue crack
detection regularly, what else to use but the reliable dye
penetrant testing method? Dye penetrant testing still
remains one of the most trusted NDT methods on site,
and has many advantages over the latest technologies
available like.
Such advantages include cost effectiveness, testing on
most alloys, ease of training personnel, visually positive
and testing of complex geometry parts.
One of the issues with dye penetrant testing in our high
tech life styles is the time required to perform a reliable
test, pre-cleaning is the most neglected or under-rated
step in the whole process.
Why pre-clean the part before the inspection? Most of us
will say it is to ensure that the indication is not covered
by dirt or that the indication is not clogged up with dirt,
thus preventing the penetrant from entering the defect,
correct! But take a minute and ask yourself “why else
is pre-cleaning so important?”
Pre-cleaning is mostly done on site by wire brushing
followed by solvent or detergent cleaning. This whole
process is done by hand and thus “forces” the techni-
cian to do a visual inspection on the part to be tested.
Furthermore, pre-cleaning also ensures an improved
wetting ability on the surface that allows the penetrant
to spread better over the test area. Finally, false indica-
tions could arise, if not cleaned properly
Pre-cleaning a part before dye penetrant testing is prob-
ably the most important step in the whole penetrant
testing method, without which a reliable test cannot
be performed.
SAINT, Tel: (011) 719-5717, Email: [email protected], www.
saint.org.za
Fact or
Fiction?
One of the myths in Non Destructive Testing is
that Dye Penetrant Testing is being phased out.
4 - 8 OCTOBER 2010
MTN Expo Centre at Nasrec, South Africa
MI NI NG – I NDUS T R I AL – C ONS T R UC T I ON
– P OWE R GE NE R AT I ON –
For further information contact
Specialised Exhibitions
Tel: +27 (0) 11 835 1565
Fax: +27 (0) 11 496-1363
or email [email protected]
or [email protected]
www.electramining.co.za
Tr ans por t f or t he Mi ni ng I ndus t r y
INCORPORATING
S
K
E
T
C
H

3
1
8
7
/
1
0
7
/
1
0
P
R
E
-R
E
G
IS
T
E
R
A
T
w
w
w
.e
le
c
tra
m
in
in
g
.c
o
.za
Entrance w
ithout a ticket, or a busi-
ness card, or pre-registration is
subject to a R20 entrance fee.
Electra Mining Africa 2010
Diarise now!
See 1000’s of products, 100’s of exhibitors
4-8 October 2010, MTN Expo Centre, Nasrec
Register for your free ticket at
www.electramining.co.za
FORTHCOMING
ATTRACTION
FORTHCOMING
ATTRACTION
oo THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
67678 Multotec A4 Industry Ad 6/17/10 8:52 AM Page 1
Composite
C M Y CM MY CY CMY K
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O o¯
SAIT
“Renewable Lubricants
& Fuels”
T
he SAIT will present a one-day seminar
on “Biofuels“, at Science Park, Northway,
Kelvin on 23 November 2010. We are in-
viting interested persons to submit papers
for this event. The seminar is intended to bring
together all parties interested in this important
and topical subject.
The bio industry and engine technology are changing
rapidly, due to a number of international drivers. As
a result, fuel and lubricant requirements are chang-
ing as well as the handling thereof. The introduc-
tion of biofuels may have an impact on the cost of
ownership of engines and needs to be handled and
treated correctly. Similarly, bio lubricant technology
is changing and developing rapidly. Awareness in
this area is of critical importance.
Guidelines for speakers
Authors are invited to submit papers on topics that
are informative and current. The following subjects
are a guideline only for the day’s programme. Any
other suggestions, ideas or topics that could be
associated with the subject, will be welcome:
Lubricants
Market overview
Impact of bio fuels on the lubricant
requirements
Formulation using bio base stocks, stability,
additive requirements
Applications for biodegradable lubricants – case
studies (hydraulics, cutter bar, other, etc.)
Storage and handling
•
•
•
•
•
Bio-ethanol
Market overview
Logistics and handling of ethanol and blends
thereof
Hydrous bioethanol in final fuels
Impact of high ethanol blend on vehicles (Elas-
tomer compatibility, metals, corrosion)
Other
Bio-diesel
Market overview
Relevance of biodiesel specification
Bio diesel stability
Cold flow properties of bio fuel blends
Bio-diesel feedstocks
Impact on DPF’s (diesel particulate filters)
General Biofuels
Bio-fuels Innovation, research and develop-
ment
General presentations and publication of Bio-
fuels
Please send a brief synopsis of your proposed paper
for approval, maximum 500 words, to the SAIT, email
[email protected] or fax to 011 804-4972, by
30 August 2010. Please include title, authors and
affiliation, and your contact details. The full paper
is required by 8 October 2010.
The seminar is not a selling platform, and product
promotional material or sales orientated videos
should not be included in the presentations.
For any enquiries regarding the
technical nature of the seminar please
contact Shawn Pharo at 082 856 2100
or Andrew Kirk at 083 601 9707, and
for general enquiries phone Gill or
Isabel at 011 802-5145
•
•
•
•
•
•
•
•
•
•
•
•
•
“Lubrication
Engineering”
five day courses in
Durban, Johannesburg
and Cape Town
67678 Multotec A4 Industry Ad 6/17/10 8:52 AM Page 1
Composite
C M Y CM MY CY CMY K
Annual Golf Challenge 2010
Once again this year we are adding a new concept
to what was a successful 2009 SAIT golf day.
PowerPlay Golf will be incorporated into this
year’s event. Check out www.powerplay-golf.
com to see what you are in for.
Venue: Glenvista Country Club
Date: Tuesday 5th October 2010
Sean Farrell, 082 354-9719 or Andrew Kirk,
083 601-9707, Email: [email protected],
[email protected]
o8 THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O oO
Massive water storage
Good news for would-be installers of very large panel reservoirs,
water storage capacities are not limited by the dimensions
of standard production models.
Wayne Thompson, managing director of Rainbow Reservoirs,
reports that the company’s Australian principals build to
specification panel-type reservoirs as large as two megali-
tres for installation around
the world.
“This is about three times
bigger than the standard
panel reservoirs listed on
company literature,” says
Wayne.
“Enquiries for very large
capacities are on the up,
and I believe our designers
at Heritage Tanks will soon
increase the maximum limit
of 2 megalitres that they cur-
rently work to,” he adds.
Wayne says that the design
of all Rainbow reservoirs is
Ultimate platform
Taking place at the MTN Expo Centre, Nasrec, Johannesburg
from 4-8 October, Electra Mining Africa is ranked as the
second largest mining show in the world and, together with
co-located shows Elenex Africa and Transport Expo Africa,
will provide visitors with the ultimate platform to view a vast
array of new innovations, products, services, technologies,
trends and industry developments in the mining, construc-
tion, industrial and power generation industries.
“Visitors can expect to see many leading-edge South African
companies in the packed halls and outside precincts, as well
as high-profile international exhibitors from countries such
as Australia, Austria, Belgium, Botswana, Brazil, Canada,
China, Croatia, France, Germany, India, Italy, Poland, Russia,
Taiwan, Turkey, UK and USA,” says Veda Koekemoer, Exhibi-
tion Manager at Specialised Exhibitions, organisers of the
shows. “Government support is also strong with large stand
areas taken by the Australian Trade Commission and Camese,
and also the French, German and USA Pavilions.”
“It’s exciting that this year’s show has attracted such a
high-level of international interest, which shows confidence
and interest in our market. The international exhibitors see
South Africa as a developing country with growth potential
and a very strong player in the mining industry”.
Entrance without a ticket, or a business card, or pre-reg-
istering at www.electramining.co.za is subject to a R20
entrance fee.
Specialised Exhibitions, Robyn Milligan, Tel: (011) 835 1565, Email:
[email protected], www.electramining.co.za
certified by a structural engineer, with manufacture carried
out to the highest Australian quality control standards for
applications in forestry, mining, construction, general industry
and agriculture.
Reservoir diameters are adapted to suit the space available
on site, and the wall height increased to deliver the storage
capacity required. The company recently used this method
of adaptation to fit a reservoir into limited site space at a
private hospital in Johannesburg.
Rainbow Reservoirs, Wayne Thompson, Tel: (015) 297 7640, E-mail:
[email protected]
Market Forum
Compressed air dryers
A new range of compressed air refrigerated dryers is now
available in South Africa. These compressed air dryers
are manufactured in Korea for international markets and
comply with the latest international and EU standards
With 13 models available in air and water cooled versions
from 2 m³/min to 42 m³/min, the HX is designed for continu-
ous use in a variety of environments.
All the models use a stainless steel plate to plate heat
exchanger for the freon exchangers which forms one space
saving unit.
The stainless steel exchanger makes the HX dryer ideal for
coastal applications where salt corrosion often attacks the
aluminum multi cell exchangers used in other brands. The
HX series also uses electro plated cabinets that are powder
coated making this dryer more resistant to corrosion.
Dryer performance is shown via an control panel that has a
drain override test button. The same panel also allows for
drain timer adjustment.
Arctic Dryers, Allen Cockfeld, (011) 425 3484, Email: allen@ar-
ticdriers.co.za
Wayne Thompson
4O THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
ExcellehL
Miherals
SoluLiohs
1RVKOKUGQRGTCVKQPUCPFOKPKOKUG
FQYPVKOGYKVJVJG9GKT/KPGTCNU/KNN
%KTEWKV5QNWVKQP
WhaL qoes ih musL qo ouL. SwifL. SLeady. No
boLLlehecks. 1he Weir Mill CircuiL SoluLioh - Lhe mosL
durable equipmehL for your mosL criLical processes -
delivers lohqeviLy, capaciLy ahd operaLihq efȨciehcy.
AL a lower 1CO, Weir's superior hydraulic desiqh ahd
Lhe combihaLioh of Ȩve performahce leadihq brahds
ehsures cohsLahL plahL LhrouqhpuL. 8ecause we khow
iL's more Lhah |usL your asseL oh Lhe lihe.
lor furLher ihformaLioh, please cohLacL us oh:
+27 (0)11 º2º 2ó00
WARMAN
'
CehLrifuqal Slurry lumps
ENVIROTECH
'
DewaLerihq CehLrifuqal lumps
VULCO
'
Wear kesisLahL Lihihqs
CAVEX
'
Hydrocyclohes
ISOGATE
'
Slurry valves
1HkO
lS ¥OÜk
DECkEASlNC?
Ü
l
C
Ü
H
1
Mill Circuit Solution.indd 1 2010/05/19 07:55:34 AM
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O 4´
Ready for market
K’Enyuka’s modular coal plant is arousing considerable inter-
est in the small to medium mining sector, both locally and
internationally, particularly among emerging enterprises, for
the numerous attractive advantages it offers.
“It is the ideal solution for beneficiating resources at
the lowest possible cost basis with the best results,”
Trevor Anderson, business development manager at
K’Enyuka, says. “In addition, the modular plant is
specifically tailor-made to clearly identified needs
and can be upgraded as a company grows, ranging
from a basic entry-level type plant to a highly complex
configuration for small, medium and large mining
companies.”
Modifications would depend on the type of in-situ
reserves and the required product specification.
K’Enyuka offers numerous “add-ons” to the standard
plant to cater for the quality of the reserve and the
market specifications. The modular plant can handle
a nominal feed tonnage of 200 tph at a top particle
size of 50 mm. “Modules can also be assembled in
parallel, to augment capacity,” adds Felihle Dumisa,
head of process engineering at K’Enyuka.
“Raw coal handling systems, fine coal washing modules, and
discard and product handling systems can also be designed
and constructed to client specification,” concludes Felihle.
K’Enyuka, Mike Symonds, Tel: (011) 498 6000, www.kenyuka.com
Next generation
IronCad Next Generation allows users to add real design
content during the development process and the embedded
2D design environment ensures users can view detail within
a familiar 2D environment .
The combination of IronCad’s design environment with the
more conventional history-based structured design environ-
ment, allows users to choose, at an individual level, which
process is most appropriate for the particular part they are
designing.
The innovative design element delivers real flexibility, al-
lowing users to directly manipulate the parts independent
of history and constraints while maintaining feature design
information. Essential for conceptual modelling. Its structured
design allows users to build rigid feature dependant parts
with embedded design intent, delivering more control over
future changes.
IronCad Next Generation incorporates a powerful 2D design
environment, offering one of the most powerful annotation
tools on the market today, embedded as a standard drafting
environment.
In addition to its familiar user friendly interface, IronCad’s
new 2D environment offers all the functionality users have
come to expect from some of the market leading standalone
2D design tools.
www.ironcad.co.za
Market Forum
ExcellehL
Miherals
SoluLiohs
1RVKOKUGQRGTCVKQPUCPFOKPKOKUG
FQYPVKOGYKVJVJG9GKT/KPGTCNU/KNN
%KTEWKV5QNWVKQP
WhaL qoes ih musL qo ouL. SwifL. SLeady. No
boLLlehecks. 1he Weir Mill CircuiL SoluLioh - Lhe mosL
durable equipmehL for your mosL criLical processes -
delivers lohqeviLy, capaciLy ahd operaLihq efȨciehcy.
AL a lower 1CO, Weir's superior hydraulic desiqh ahd
Lhe combihaLioh of Ȩve performahce leadihq brahds
ehsures cohsLahL plahL LhrouqhpuL. 8ecause we khow
iL's more Lhah |usL your asseL oh Lhe lihe.
lor furLher ihformaLioh, please cohLacL us oh:
+27 (0)11 º2º 2ó00
WARMAN
'
CehLrifuqal Slurry lumps
ENVIROTECH
'
DewaLerihq CehLrifuqal lumps
VULCO
'
Wear kesisLahL Lihihqs
CAVEX
'
Hydrocyclohes
ISOGATE
'
Slurry valves
1HkO
lS ¥OÜk
DECkEASlNC?
Ü
l
C
Ü
H
1
Mill Circuit Solution.indd 1 2010/05/19 07:55:34 AM
4' THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
Largest billet inspection
Tectra Automation has supplied components to H. Rohloff
for the design and manufacture of the world’s largest billet
inspection line. The machine, currently awaiting factory ac-
ceptance by the client, is destined for a Chinese steel mill,
Dalian Steel. The machine is valued at R16 million and uses
thermography to accurately detect defects.
H. Rohloff designed and manufactured a Billet InspectIR
inspection line consisting of six computers, a control desk,
a 19-inch signal processing cabinet, induction heater, pre-
wetting station, camera box station and marking station. The
line was designed to inspect 360 mm bar.
According to Lowie van der Walt, Project Engineer, H. Rohloff,
the company once again partnered with Tectra Automation
Contest competitive market
Engen, the African energy company, has extended its Indian
Ocean (IO) coverage with the appointment of leading regional
oil company Galana as its lubricants distributor in Mada-
gascar. With marketing operations in 18 African countries,
Engen further exports its products to over 30 African and
IO countries, and continues to seize acquisitive, organic and
partner growth opportunities in the regions.
Engen International Business Division (IBD) GM Wayne
Hartmaan, says the partnership is exclusive and constitutes
a good platform on which to establish Engen’s brand rela-
tively quickly in the Indian Ocean. “We aim to leverage this
partnership to become one of the leading lubricants suppliers
in the competitive Malagasy market.”
Engen brings a strong South African brand to the table, en-
compassing a full range of lubricants of guaranteed quality
carrying various approvals from original equipment manu-
facturers (OEMs), Wayne says.
Galana, has extensive local market knowledge, an extensive
retail network, industrial and port installations, and a mod-
ernised distribution network, giving it 25% of the retail fuel
market in the country.
Looking to consolidate its position as the leading oil com-
pany in the Indian Ocean, Galana is currently undergoing an
extensive capital investment programme, including a new
petroleum jetty and ongoing retail network modernisation
and construction, reports the company.
www.engenoil.com and www.galana.com
Market Forum
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O 4o
Turning sludge into product
Local bio-fuels and petrochemicals engineers need no longer
look abroad for specialist solutions to their tank agitation
requirements as the Robin range of industrial mixers from
Milton Roy is now being sold and supported by Ecochem
Pumps. It has recently announced an extension of its product
offering to include side entry mixers needed for petrochemi-
cals and biofuels processing and storage.
In these applications, thorough agitation is needed to prevent
suspended solids from settling during heavy and unrefined
fuels storage, forming a cake that is difficult and costly to
remove, and which equates to wasted product.
A combination of steam pipes, agitators and mixers is gener-
ally used to keep fuels in motion, with engineers considering
the side-entry swivel-type mixer essential to achieve fuel
motion throughout the tank.
It is this type of Milton Roy mixer which Gauteng-based Eco-
chem Pumps is now importing. The Helisem range offers an
array of standard models, while the Robin series comprises
customised mixers engineered for specialist applications.
Designed for large operating volumes up to 5000m
3
, Robin
mixers can be manufactured with diameters of up to 9 me-
tres, and with shaft lengths up to 40 metres. Motors up to
630kW supply the power.
Ecochem Pumps managing director, Ed Lemke, explains
that each Robin mixer is designed to optimally balance
in order to ensure compo-
nents for a machine. “Tectra
Automation has worked with
us on the development of our
two previous Billet InspectIR
lines which were supplied
to ArcelorMittal and a steel
manufacturer in Germany. The
Tectra team is ideal because of
their expertise, product quality
and service back-up.
“We worked with Tectra Auto-
mation from the design phase
to ensure that we developed
a sophisticated machine that
met all of our client’s require-
ments.”
Louie notes that the inspection line will be installed in the
production line and is unique in that it can inspect round
bar from 40mm to 360mm and square bar up to 250mm.
“The line features 11 Bosch Rexroth servo motors which are
responsible for positioning the billets. Once the parameters
are programmed into the machine, it automatically adjusts
according to the size of billet being inspected.”
Tectra Automation, Georg Venter, Tel: (011) 971 9400, Email:
[email protected]
heavy fuel movement with the amount of energy needed
to achieve it.
Ed says that Ecochem would propose a particular design of
mixer after considering test results from Milton Roy’s pilot
plant, which simulates the complex process of mixing within
tanks of different dimensions using different Robin models
at various levels.
Used in combination with computer modelling and residence
time distribution analysis in their pilot plant, this simula-
tion identifies areas in the tank in which mixing may not
be taking place, allowing the mixers to be repositioned to
optimise the outcome.
“The benefits include a power consumption made as low as
possible by shaping the mixing vanes to suit the applica-
tion, and by optimising mixer geometry to limit tank wear
and reduce the scheduled maintenance needed to remove
scale,” he says.
Ecochem Pumps, Ed Lemke, Tel: (011) 455 5710, E-mail: ed@eco-
chempumps.co.za
Market Forum
44 THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
Supports complex requirements
Now part of software giant Infor, Baan an
enterprise resource planning solution has
survived two acquisitions and, according to
Softworx, Baan is operated by more than
120 customers across sub-Saharan Africa,
with new customers joining all the time.
A good example, says Jane, is Weir Minerals
Africa, which has been a Baan customer
for 12 years and has recently extended its
use with a successful implementation in
its newly acquired Alrode facility.
Infor ERP Baan IV provides Weir Miner-
als with core manufacturing and planning
functionality on a scalable, multi-language,
open-systems platform.
The strength of Infor ERP Baan and Infor ERP Ln lies in its
ability to support complex manufacturing and distributions
requirements of industrial equipment and machinery, high-tech
electronics, component producers, commercial aerospace,
shipbuilding and other companies. It is a fully integrated
solution providing multi-plant business process modelling
and delivers information visibility for decision-makers.
Infor ERP Baan and Infor ERP Ln help make-to-stock, assemble-
to-order, make-to-order, and engineer-to-order companies
lower their total cost of technology ownership. In support
Jane Thomson
Canning conundrum solved
Shortly after introducing RBC bearings to the South
African market in early 2010, sole distributor Bear-
ings International (BI) has solved a longstanding
productivity issue in the canning industry.
“A canning company’s necking machines were experiencing
premature cam follower failure linked to high load applica-
tion, lack of lubrication and high operating temperatures,”
says BI’s RBC Product Manager Athol Palmer “
Conventionally, a standard cam follower uses a full comple-
ment needle roller design, which is known to cause roller
skewing. This in turn raises operating temperatures and
inhibits operating speeds. Needle rollers also limit the load
carrying capacity, while their gap seals allow contaminants
to intrude.
“With a totally different design, the RBC roller cam
follower has solved all these issues at once. Its double
row cylindrical large diameter rollers are able to
carry high loads, resulting in reduced fatigue. The
precise roller guidance achieved makes it possible
to run up to 10 degrees C cooler.”
He says the contacting lip seals only make contact
with the stud ground diameters, providing a secure
seal that retains lubricants and excludes contami-
nants. A large grease reservoir between the roller
paths contains up to four times more grease than
like-sized needle cam followers.
“The canning company is already enjoying several
benefits, including power savings and lower main-
tenance requirements, since there is less wear
and tear in the internal workings, and significantly
reduced downtime,” says Athol.
Bearings International, Athol Palmer, Tel: (011) 345
8000
New pump generation
Movitec has improved its vertical Movitec high-pres-
sure in-line pumps. It recently announced, sizes 2,
4 and 6 of the new generation pumps. With the
addition of size 6, KSB is now able to offer Movitec
with a full set of uniformly spaced characteristic
curves, so that potential users can select the optimum
of its legacy products, Infor has ensured that all
previous Baan releases have been back-ported and
are fully compliant with Infor’s new SOA strategy
which enables them to take advantage of the new
architecture and components.
www.esoftworx.co.za
Market Forum
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O 4o
pump to suit their
particular applica-
tion. This allows
an optimised and
energy-efficient
fluid flow with
standardised pipe
diameters. Based
on our know-how
and experience,
we have optimised
the hydraulic sys-
tem and design
of the Movitec
pumps, so that
the new genera-
tion offers our cus-
tomers numerous
additional benefits:
When it comes to keeping system costs down, the cost effectiveness of every system
component has to be analysed in detail and the new Movitec is ideally suited to
take full advantage of potential energy savings.
www.ksbpumps.co.za
Market Forum
Heat exchangers in any size
Transheat, manufacturers of Transon heat exchanger systems, which was acquired
by Bearing Man Group (BMG), has relocated to the BMG Drives Westmead facility
in KwaZulu-Natal.
The new BMG Drives facility, which boasts ISO 9001:2008 accreditation for the
design, manufacture and refurbishing of heat exchangers, was recently audited by
a major international consortium and has been accredited as the preferred supplier
and refurbisher of all brands of heat exchangers,” says Ray Walker, general and
technical manager of BMG’s heat exchanger division.
The company has recently completed the manufacture of a new 4 tonne Transon heat
exchanger, but, the largest Transon exchanger built by BMG to date is a 48 module
unit which was constructed for an extremely corrosive mining application.
Transon’s modular design, which comprises one or more shell and tube type standard
units assembled together, enables installations to be extended to meet increased
capacity requirements
and to overcome space
restraints if neces-
sary.
Single and multi-mod-
ule units can be ar-
ranged in horizontal or
vertical configurations,
depending on capacity
and size requirements.
Mounting stands are
designed for simple,
quick installation to
match the related pipe
work.
Fluid separation is
4o THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O
Index to Advertisers
Artic 14
AST Inside Front Cover
Atlas Copco 32
Axiom Hydraulics 38
Bearings International Outside Back Cover
Bonfiglioli 20
Chemserve Systems 44
Co-Generation 10
Donaldson 16
Eastleigh 24, 25
Electra Mining 35
Engen 22
Engineer Placements 16
Esab 26
Ethekwini Municipality 27
Europair 30
GEA Grasso 4
Hansen Transmission Outside Front Cover
Hytec 34
IronCAD 42
Multotec 36
Resulta 41
SEW Inside Back Cover
SKF 23
Verder 45
Voith 31
Weir Minerals 40
Yellotec 12, 18
Please fax us if you wish to subscribe to “SA Mechanical En-
gineer” at R400,00 (incl postage and VAT) per year; R945,00
per year for Africa/Overseas. We will post you an invoice on
receipt of your fax.
PROMECH PUBLISHING Fax No: (011) 781-1403
From:......................................................................................
(insert your name)
Title: ......................................................................................
Company: ..............................................................................
Address: ...............................................................................
...............................................................................................
...................................................................Code: ..................
Telephone: ( ) ....................................................................
Fax: ( ) ................................................................................
Email:.....................................................................................
Subscription
On the Move
Massyn Jansen van Vuuren
has been appointed as
Internal Sales engineer at
the Johannesburg offices
of SEW-Eurodrive.
Massyn Jansen van Vuuren
Market Forum
Equipment supplier acquisition
Imperial Holdings Limited, through its subsidiary AMH, has
announced that it has acquired a majority shareholding in
the Goscor Group of companies, a diversified industrial and
engineering group.
Founded in South Africa, the Goscor Group has been supply-
ing the local market with industrial equipment and solutions
for the past 26 years. It consists of 6 key divisions, and is
a distributor of industrial equipment.
Goscor Lift Truck Company is the sole provider of forklift
brands such as Crown, Doosan and Bendi in South Africa.
Goscor ARC is a South African supplier of welding and cut-
ting solutions. Supplying brands such as Lincoln Electric and
ESAB, which the two most dominant players in the world
welding market., Goscor Arc’s customers include major players
in the steel fabrication, mining, construction and transport
industries. Goscor Cleaning Equipment provides industrial
cleaning equipment solutions from a wide range of brands
including Tennant, Elgin, Ghibli and Vactor. Goscor Power
Products distributes Robin Subaru engines, pumps, genera-
tors and welders. It is also the South African distributor of
the Meiwa and Laku light construction equipment ranges.
Goscor Compressed Air Systems is the sole distributor for
Sullair Compressors and has been providing the healthcare,
cement, packaging and mining industries with holistic solu-
tions since 1984. Goscor Rental Company is an equipment
supplier of lift trucks and industrial cleaning equipment on
a daily, weekly or monthly basis. This equipment can be
supplied with a qualified operator, thereby enhancing per-
formance and reducing customer risk.
Imperial Holdings, Manny de Canha, Tel: (011) 398 9100
an important safety feature of Transon’s heat exchanger
system. In the event of seal deterioration, an atmospheric
gap ensures that fluid leaks externally, preventing internal
mixing and cross contamination of fluids.
BMG, Ray Walker, Tel: (031) 701 4547, Email: rayw@bmgworld.
net, www.bmgworld.net
Suppliers of geared motors, industrial gears, frequency inverters, drive electronics, servo technology and services.
Naturally, as the leading drive-technology specialists, we consistently develop new products that are above all reliable,
energy-effcient and produced cost-effciently. Moreover, our know-how and experience allows us to go a step further than
the rest – providing solutions that you can build on. That’s what we call Drive 360
o
– Seeing the big picture: from the system
availability to problem-solving competence, achieving lower operating costs through energy-effciency right through to
fnished systems. We can fulfll all your needs.
SEW-Eurodrive (Pty) Ltd
PO Box 90004
l
Bertsham 2013
Tel: +2711 248-7000
Fax: +27 11 248-7289
www.sew.co.za
SEW-EURODRIVE - Driving the world
We don’t develop products
we develop solutions.
297 x 210 Problem solver.indd 1 8/11/09 12:12:44 PM
THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O 4¯
Suppliers of geared motors, industrial gears, frequency inverters, drive electronics, servo technology and services.
Naturally, as the leading drive-technology specialists, we consistently develop new products that are above all reliable,
energy-effcient and produced cost-effciently. Moreover, our know-how and experience allows us to go a step further than
the rest – providing solutions that you can build on. That’s what we call Drive 360
o
– Seeing the big picture: from the system
availability to problem-solving competence, achieving lower operating costs through energy-effciency right through to
fnished systems. We can fulfll all your needs.
SEW-Eurodrive (Pty) Ltd
PO Box 90004
l
Bertsham 2013
Tel: +2711 248-7000
Fax: +27 11 248-7289
www.sew.co.za
SEW-EURODRIVE - Driving the world
We don’t develop products
we develop solutions.
297 x 210 Problem solver.indd 1 8/11/09 12:12:44 PM
48 THF oOLTH /FF¦C/N MFCH/N¦C/¦ FNC¦NFFF \O¦ o´ /ucus¦ 'O´O