PROCEDURE-FOR-RADIOGRAPHY-TESTING

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LARSEN & TOUBRO LIMITED MSQ(EPCC 1) UP GRADATION PROCEDURE FOR RADIOGRAPHY TESTING

DATE:-03.11.2007 REV.NO.- 0 PROCEDURE NO.LT/MSQ/P/ RT /009

CONTENTS

1. SCOPE 2. REFERENCE 3. PERSONNEL 4. IDENTIFICATION OF FILM 5. EQUIPMENT/MATERIAL EQUIPMENT/MATERIAL 6. TECHNIQUE 7. IQI 8. LOCATION MARKER  9. GEOMETRIC UNSHARPNESS 10. BACK SCATTER RADIATION 11. EXPOSURE 12. DENSITY 13. DARK ROOM 14. FILM PROCESSING 15. QUALITY OF RADIOGRAPHS 16. EVALUATION 17. ACCEPTANCE CRITERIA 18. DOCUMENTS 19. SAFETY

L&T

JACOBS

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LARSEN & TOUBRO LIMITED MSQ(EPCC 1) UP GRADATION PROCEDURE FOR RADIOGRAPHY TESTING

1.0

DATE:-03.11.2007 REV.NO.- 0 PROCEDURE NO.LT/MSQ/P/ RT /009

SCOPE:

This procedure describes are method & techniques of radiographic examination of   butt welds of  piping construction work of MSQ Up gradation Project, IOCL Panipat. . 2.0

REFERENCE:

2.1

ASME SEC. V Article – 2 - Non destructive Testing – Radiographic Examination.

2.2

ANSI B 31.3 (For acceptance Standard)- Code for Processing Piping.

2.3

ASNT

Recommended

practice:

SNT-TC-1A-Personnel

qualification

and

certification in Non destructive testing. 2.4

ABB Specification No.-00000-SW-231

3.0

PERSONNEL:

All radiography activities shall be carried out by BARC certified personnel only. Radiography shall be evaluated by certified ASNT/ISNT level II personnel. Certificate of RSO / site-in-charge, Radiographers shall be submitted. 4.0

IDENTIFICATION OF FILM :

Each radiograph shall have permanent identification to establish its precise location to job at least 5mm away from the weld edge. Identification shall have minimum following requirement. 4.1

Project Identification no.

4.2

Line no.

4.3

Joint no.

4.4

X-ray unique no.

4.5

Welder no.

4.6

Thickness

4.7

Date

L&T

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LARSEN & TOUBRO LIMITED

DATE:-03.11.2007

MSQ(EPCC 1) UP GRADATION

REV.NO.- 0 PROCEDURE NO.LT/MSQ/P/ RT /009

PROCEDURE FOR RADIOGRAPHY TESTING

Any additional information shall be added as required. 5.0

EQUIPMENT/MATERIAL: 5.1

SOURCE Iridium-192/Gamma ray source as per requirement will be used.

Refer Table-1 5.2 5.2.1

FILM

ASTM CL-I or CL-II film may be used depending upon sensitivity requirement as  per table below. All films to be used for radiography shall be in good condition and within the period of expiry date, marked on each individual carton by manufacturer.

Type of Source and Film to be used for Radiography: Table-I

Wall Thickness (T)

Material

Shop Welded Joints

Field Welds

in mm Source

19 ≥ T All materials

8 ≥ T < 19

Carbon Steel

Source

Film

Gamma-ray

AGFA D7 or  Gamma-ray

AGFA D7 or 

(Iridium 192)

Equivalent

(Iriduim 192)

Equivalent

X-ray

AGFA

X-ray /Gamm- AGFA D5 or 

/Gamm-ray

or Equivalent

(Iridium 192)

L&T

Film

D7/D5

ray 192)

JACOBS

(Iridium Equivalent

PAGE NO.- 4OF 9

LARSEN & TOUBRO LIMITED

DATE:-03.11.2007

MSQ(EPCC 1) UP GRADATION PROCEDURE FOR RADIOGRAPHY TESTING