PMI Test Procedure

POSITIVE MATERIAL IDENTIFICATION PROCEDURE

Issued By : Approved By : Date Version

Kumaran Bernard Wong 18th Oct 2011 1.0

QA Managing Director 18th Oct 2011

PANAFLO CONTROLS PTE LTD


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CONTENTS SECTION

DESCRIPTION

1.0

SCOPE

2.0

EQUIPMENT USED

3.0

REFERENCES

4.0

EXTENT OF ALLOY VERIFICATION

5.0

DETECTIVITY

6.0

SURFACE PREPARATION

7.0

EXAMINATION AREA

8.0

CONFIGURATION & CALIBRATION

9.0

TAKING MEASUREMENT

10.0

CHECKING RESULTS

11.0

REPORTS / VERIFICATION

12.0

ACCEPTANCE CRITERIA

13.0

NON-MATCHING

14.0

ENVIRONMENTAL CONDITIONS

15.0

REPORT FORMAT

GENERAL NOTES:

1.

This procedure is applied on the raw material & fabricated piping spools or other fabricated material to meet the requirements of ASME SECTION II 2010 edition or client procedure.

2.

Personnel operating the test instrument shall be registered with the Radiation Protection Inspectorate and fully con versant with NIT ON XLp 80 0 of XL3p800, X-Ray Fluorescence Analyzer’s Operation Manual.

3.

Caution: When the instrument is in the operation mode, the radiation level at Probe Plastic –Film Window is about 0.1 mRihr. However, confinement of the Testing area will not be Necessary.

4.

Film Badge or Pocket Dosimeter shall be used for PIVII Technician when doing test.



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1. Scope This procedure covers the requirements for Positive Material Identification to determine the material to be tested, complies with that specified in the drawings or mill certificates or Client procedures

2. EQUIPMENT USED 2.1

NITON XLt 898 or XL3p-800 X-ray Spectrum Analyzer

2.2

AM 241 Isotope 30mCi & X-Ray tube (Battery Operated)

3. REFERENCES 3.1

NITON XLt 898 or XL3p 800 User’s Guide 3.2 ASTM E 1476

3.2

ASTM E 1476Metallurgist Pro Alloy Data

3.3

API Recommended Practice 578 (2nd Edition 2010)

3.4

Metallurgist Pro Alloy Data

3.5

Client Specification

4. EXTENT OF ALLOY VERIFICATION

4.1

The location of alloy verification to be canied out shall be in accordance to client requirements/specifications.

4.2

Location of alloy verification to be tested are restricted by the accessibility of test items for the alloy analyzer to be replaced.

5. DETECTIVITY

5.1

The instrument provides fast and efficient measurement of the elements of atomic munber 22 and above

6. SURFACE PREPARATION

6.1

The test surface to be measured shall be free from surface irregularities, paint, loose scale or any contaminant that might interfere with the examination.

6.2

Such surface conditioning can be achieved by power brushing, shot blasting or any approved methods.



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7. EXAMINATION AREA

7.1

The examining area of the metal surface to be prepared for measurement shall be at least 30min in diameter.

8. CONFIGURATION & CALIBRATION

8.1

On initial switching on of the instrument, it will undergo configuration process of approximately thirty (30) minutes.

8.2

Following which the screen will indicate the test mode, later than the instrument is calibrated using the known sample.

8.3

If the composition is not very near to 100% the test is repeated & once the sample is confirmed, tests are done similarly on the material to be analyzed.

9. TAKING MEASUREMENT

9.1

Take the window where the radiation is emitted shall be placed, flushed against the surface of the prepared spot.

9.2

Held in the position, the instrument will be turned on in operation mode by triggering the lock and hold

9.3

Measurement is accomplished within thirty (30) seconds.

10. CHECKING RESULTS

10.1

Results shall be compared against mill certificates of the pipe manufacturers, while the electrode / filler rod manufacturer or the identified material grade from the supporting spool drawing.

10.2

Upon completion of all positive material identification, the area being tested shall be marked with "PMIV" with a low stress stamp, if the client specifically requests.

11. REPORTS / VERIFICATION

11.1

The spool drawings of all items tested shall be stamped "Alloy Verified" signed and dated by the Inspector who performed the testing, if requested by the client.

11.2

A report containing all readings taken and also be generated as per clients request



11.3

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The report shall contain major elements and composition shall be within limits as specified in standards or client specification.

12. ACCEPTANCE CRITERIA

12.1

The acceptance criteria shall be in accordance with ASIVIE Section II or ASTM Specifications.

13. NON-MATCHING

13.1

Disparity on any fittings, pipe piece or weld shall be re-verified by taking an additional measurement.

13.2

Upon confirmation of nonconforming material, the item shall be marked "R" and reported to client's representative.

13.3

Non-conforming material is recommended for replacement or repairs, followed by retest.

14. ENVIRONMENTAL CONDITIONS

14.1

The location where the "PIVII" to be canied out shall be flee from noise / vibration and temperature should not be more than 50° Celsius.

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