1194 -PMI Procedure

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DOCUMENT COVER SHEET
Document Title:

POSITIVE MATERIAL IDENTIFICATION PROCEDURE
Owner
Name

: PROSERV –PDO

Job No

: 1194

Project
Name

: RHIP PDO PROJECT

PO No

: 05-0011980

Tag No

: A-0820, A-5003, A-1123 & 1124

Procedure No

: TI-1194-PMI-01

Job Description: Corrosion Inhibitor Tanks and Frames

PROSERV -PDO

0

01.03.2016

Issued for approval

MAS

SGP

NG

Rev.

Date

Description

Originator

Reviewed

Approved

PMI Procedure
BIS_TE_1032
Prepared By

Reviewed And Approved By

Sajan Thomas

Manoj M V

04-05-2015

04-05-2015

Signature

Date

Procedure No
Edition

BIS_TE_1032
1

Revision

0

Date
Page 1 of 7

04-05-2015

CONTENTS
Clause
No

Page
No

Description

1

Aim/Scope

4

2

Definitions

4

3

References

4

4

Safety

4

5

Personal

4

6

Equipment

5

7

Procedure

5

8

Evaluation

5

9

Acceptance Criteria

5

10

Marking

6

11

Reporting

6

Procedure No
Edition

BIS_TE_1032
1

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SUMMARY OF CHANGES
SL.
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1

1

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BIS_TE_1032
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Change
First edition

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Pag
e No

Date

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04-05-15

04-05-2015

1. Aim/Scope
1.1. This procedure establishes the minimum requirements for identification of metallic
materials, also referred to as Alloy Verification (Positive Material Identification - PMI).
1.2. The aim of the identification of material shall be to ensure that the nominal material
composition is as supplied and complies with purchase order and / or design
requirements.
2. Definitions
a) Material Verification - Verifying the composition of metallic elements against known data.
b) Material Identification - Investigating unknown or unidentified metallic materials.
c) Material Sorting - Comparing and sorting material against a reference sample analysis for
which analyzer is programmed.
d) AV - Alloy Verification
e) PMI - Positive material identification is the determination whether the nominal material
composition is as specified.
f)

OES - Optical Emission Spectrometer

3. References
The following documents shall be referred to in conjunction with this procedure:
a) ASME Section II, Ed 2013
b) ASTM E 353, Chemical Analysis of Stainless, Heat Resisting, Managing and Other Similar
Chromium, Nickel – Iron Alloys
c) ASTM E 354, Chemical Analysis of High-Temperature, Electrical, Magnetic and Other
Similar, Nickel and Cobalt Alloys
d) ASTM A-751, Method Practices and Terminology for Chemical Analysis of Steel Products
e) PMI equipment Operations Manual
f)

Spectroport Operations Manual

g)

Belec OES Operations Manual

h) ASME Section IX Ed 2013
i)

ASTM E 1476-04

4. Safety
4.1. Only trained personnel shall use this equipment.
4.2. As this procedure involves the use of an electrically operated / x-ray producing portable
equipments care should be exercised due to the possible hazards of using them in humid
and other adverse operating conditions. Safe operation and emergency requirement shall
be carried out in accordance with the respective equipments operations manual or user
guides.
4.3. Direct viewing of the arc or x-ray should be avoided to protect the eyes from damaging
ultraviolet rays and x-ray radiation.
5. Personal

Procedure No
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BIS_TE_1032
1

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5.1. Only trained personnel shall undertake the operation and interpretation of recorded results
to ensure that both the procedure and the work are implemented correctly in order to
identify / verify the nominal material compositions.
6. Equipment
6.1. The following equipment or similar equipment shall be used, as may be available:
a) Niton Corporation ‘XLt 800’ Alloy Analyzer works on the principle of X-Ray
Fluorescence (XRF).
b) Innov-X Systems ‘Alpha 2000’ Alloy Analyzer works on the principle of X-Ray
Fluorescence (XRF).
6.2. Analyzed samples having relevance to the job shall be made available for cross-reference
and calibration purposes.
6.3. The equipment shall require re-calibration at the job site should the readings be observed
as abnormal due to severe temperature fluctuations or any other adverse site conditions.
7. Procedure
7.1. The battery powered Niton equipment, the measurement window shall be placed against
the sample to be analyzed and the trigger pulled to get the analysis of the sample. The
chemical composition obtained shall be noted down in the appropriate report format.
7.2. The equipment shall be set up with the standard samples in accordance with procedure
given by the manufacturer.
7.3. After successful standardization the equipment shall be calibrated by checking the values
of the standard material samples with reference to the job.
7.4. Programme options as per Client requirement, such as identification, verification or sorting
shall be selected.
8. Evaluation
8.1. Sort mode may be used whenever different grades of the same material are mixed and the
aim shall be to separate one grade from other in a quick manner. This mode is helpful in
reclaiming valuable metals from scrap material.
8.2. Material verification mode shall be selected whenever the chemical composition of the job
is to be verified. The chemical composition of the job shall be programmed into the
equipment and the result shall be verified as below;
9. Acceptance criteria
9.1. For acceptance, it shall be demonstrated that materials contain the amount of alloying
elements shown in the material specification. Alloys shall be deemed acceptable if the
alloying elements are each within ten percent (10%) of the values.
9.2. Welds having consumable material content that matches, or nearly matches, the base
metal composition within approximately twelve and half percent (± 12.5%) of the ranges
allowed in ASME Section II, Part C for each element.
9.3. Acceptance criteria for dissimilar metal alloy welds shall be in accordance with the welding
consumable material specified in the approved welding procedure. The effects of dilution
between the different base metals and the filler metal shall be taken into account when
determining the nominal as-deposited weld metal composition.
9.4. Rejection Procedure
a) If any component or weld is found unacceptable, it shall be replaced and the
replacement shall be alloy verified in accordance with Client’s specification.

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b) It shall be the responsibility of the Client to ensure that rejected components are
segregated and properly marked to prevent reuse.
c) Where one of the selected items is found unacceptable, all remaining materials
represented by such selected items shall be tested.
d) All rejected materials shall be replaced and subjected to PMI in accordance with
this procedure or Client’s specification as required.
10. Marking
10.1. All components and / or welds that are examined shall be marked by the Client.
11. Reporting
11.1. For the Niton ‘XLt 800’ Alloy Analyzer, Belec OES Equipment and Innov-X Systems
‘Alpha 2000’, the report shall have following information;
11.2. Reports shall be on Beta report format (BIS_71 &)
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)

Procedure No
Edition

Client Name
Beta Inspection Services Job Number
Technician Name
Site / Location
Project
Line / Heat Number
Size
Element Percentage
Grade Identification
Results

BIS_TE_1032
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REPORT FORM

Procedure No
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