rsh-c3p-00-pl-pr-4121-d2

`RESHADAT RENOVATION & DEVELOPMENT PROJECT(SUBSEA PIPELINES AND CABLES)

TASDID OFFSHORE DEVELOPMENT COMPANY

Subject :

Ultrasonic Testing Procedure

Project No. : Document No.: RSH-C3P-00-PL-PR-4121-D2

-2-88-4164 Date : 15/04/2013 No. of Pages: 29

Ultrasonic Testing Procedure

D2 IFA 15/04/2013 H.Y A.GH A.GH

D1 IFA 16/09/2012 H.Y M.S A.GH

D0 IFC 03/08/2012 S.P M.S A.GH

Rev Description Date Prepared Checked Approved Company Date

Category:

1-For Approval 2-For Review 3-For Information

All Right Reserved

D2

RESHADAT RENOVATION & DEVELOPMENT PROJECT

(SUBSEA PIPELINES AND CABLES)

DOCUMENT TITLE Ultrasonic Testing ProcedurePage: 2 of 29

DOCUMENT NO. RSH-C3P-00-PL-PR-4121-D2

TABULATION OF REVISED PAGES

PAGE REV. D0 REV.D1 REV.D2 REV.D3 PAGE REV. D0 REV.D1 REV.D2 REV.D3

1 312 323 334 345 356 367 378 389 39

10 4011 4112 4213 4314 4415 4516 4617 4718 4819 4920 5021 5122 5223 5324 5425 5526 5627 5728 5829 5930 60





TABLE OF CONTENTS

1.0 INTRODUCTION...............................................................................................................5

1.1 PROJECT DESCRIPTION.................................................................................................................................. 5

1.2 SCOPE OF DOCUMENT .................................................................................................................................. 6

1.3 DEFINITIONS ................................................................................................................................................. 6

1.4 CODES AND STANDARDS AND REFERENCES.....................................................................6

2.0 PERSONNEL QUALIFICATION..7

3.0 GENERAL.........................................................................................................................7

3.1 Examination Coverage .................................................................................................................................. 7

3.2 Rate of search unit movement...................................................................................................................... 7

3.3 Scanning Sensitivity ...................................................................................................................................... 7

3.4 Equipment .................................................................................................................................................... 7

3.5 Couplant ....................................................................................................................................................... 8

3.6 Surface Preparation ...................................................................................................................................... 9

4.0 INSTRUMENT CALIBRATION ............................................................................................9

4.1 Routine checks on the performance of instrumentation............................................................................... 9

4.2 Resolution....................................................................................................................................................12

5.0 SYSTEM CALIBRATION...................................................................................................12

5.1 Basic Calibration Block .................................................................................................................................12

5.2 Angle Beam Method ....................................................................................................................................13

5.3 Calibration Confirmation .............................................................................................................................13

6.0 ESTABLISHMENT OF TRANSFER VALUES.........................................................................17





7.0 SCANNING ....................................................................................................................17

7.1 Scanning Extent ...........................................................................................................................................17

7.2 Angle Beam Scanning...................................................................................................................................17

7.3 Straight Beam Scanning ...............................................................................................................................17

7.4 Evaluation....................................................................................................................................................17

8.0 ACCEPTANCE CRITERIA..................................................................................................18

9.0 RECORDS ......................................................................................................................18

APPENDIX- A: UT EQUIPMENT CALIBRATION FORM..................................................................20

APPENDIX- B: ESTABLISHMENT OF TRANSFER VALUES .............................................................. 23

APPENDIX- C: SPECIFIC PROCEDURE ATTACHMENTS .................................................................25

APPENDIX- D: REPORT OF ULTRASONIC TESTING ......................................................................28





1.0 INTRODUCTION

1.1 PROJECT DESCRIPTION

Iranian Offshore Oil COMPANY (IOOC) intends to renovate and further develop the Reshadat oil fields through execution of the Reshadat Renovation and Development project. The Reshadat Field, formerly called Rostam, is located in the Persian Gulf 110kms south-west of Lavan Island at approximate co-ordinates of 25o 56 17 N, 52o 54 17 E at R4 and

25o 54 26 N, 52o 54 42 E at R7 drilling platforms.

The Reshadat Field will comprise of one satellite wellhead platform (W0) and a central complex at R4 consisting of a wellhead platform, (W4) replacing the existing R4 drilling

platform, a production platform (P4) a living quarter platform (Q4) and a flare platform (F4).

The satellite wellhead platform (W0) will be a new platform located approximately 1.2 km south of the former R7 complex. This platform normally will not be a manned wellhead

platform housing both oil production and water injection wells, drilled using a jack-up rig.

All W0 wellhead produced untreated three phase fluid will be sent via a new 16 subsea pipeline to the P4 production platform for processing. One 8 test line will also be provided between W0 and P4 to allow wells on W0 to be tested in the test separator on P4. Injection water for W0 will be generated on P4 and sent to W0 via a new 10 water injection line. A new wellhead platform (W4) will be installed and bridge-linked to P4. The W4 drilling facilities will be used to drill both oil production and water injection wells. Oil produced will flow over a bridge connecting the W4 platform to the production platform (P4) for processing. Injection water will be produced on the P4 platform and pumped over the bridge to the injection wells on W4. Two three-phase production separators will be installed on the new P4 platform. Production from the W0 platform will flow to one production separator, and production from the W4 platform will flow to the other. Oil from P4 production separators will be pumped to Lavan Island using the new 16 export pipeline which about 1100m of this line will be onshore. The associated gas will be compressed at P4 compression facilities and will be sent to KPP platform via a new 10 gas export pipeline. The flare platform (F4) is also bridge linked to the P4 platform. This platform will be used to safely burn any hydrocarbon vapors released as a result of operating the P4 production facilities. In addition two subsea Power and Control cables will be installed between the new Production platform P4 and the new Wellhead platform W0. They will be installed within individual J-

tubes

.





1.2 SCOPE OF DOCUMENT

This procedure is to govern both straight and angle beam technique with contact method of the ultrasonic examination for butt and branch welds in platform piping.

This procedure is applied to full penetration welds, heat affected zone, and adjacent material in wrought and cast forms including pipes, fittings, but excluding pressure vessels. ultrasonic testing can be implemented in lieu of radiographic testing in offshore where the welds can not be tested with RT.

1.3 DEFINITIONS

The following abbreviations are used in this document:

IOOC Iranian Offshore Oil Company, herein referred as COMPANY

TASDID TASDID Offshore Development Company herein referred as

CONTRACTOR

EPCI Engineering, Procurement, Construction & Installation

PROJECT Submarine pipeline renovation for Aboozar- Nowrooz fields

Shall Indicates a mandatory requirement

May indicates one possible course of action Should is used where a provision is preferred

SUBCONTRACTOR Service Supplier of CONTRACTOR

VENDOR Material Supplier of CONTRACTOR

TPA GL Noble Denton (third party agency)

1.4 Codes And Standards And References

Specification for pipelay barge welding & NDT of pipeline (RSH-C3P-00PL-SP-1313-D1)

ASME Sec. V, Non-destructive examination (1998 Edition)

ASME Sec. VIII Rules for construction of pressure vessels Div. 1 (1998 Edition)

ASME B31.3 Chemical plant and petroleum refinery piping (1998 Edition)

BS 4515-1:2009 Specification for welding of steel pipeline on land & offshore

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ASTM A578 Straight beam ultrasonic examination of plain and clad steel plates for special applications.

2.0 PERSONNEL QUALIFICATION

NDT operator shall be qualified to level II of the relevant PCN standard or SNT-TC-1A. SNT qualification will only be acceptable if they have been of awarded by an independent THIRD PARTY AGENCY.

Responsibility

QC Manager shall be responsible for the implementation and control of this procedure.NDT Level 2 Examiner shall be responsible for performing the tests and interpretation of the radiographs with respect to this procedure and preparing the test reports.

3.0 General

3.1 Examination Coverage

The volume shall be examined by moving the search unit over the examination surface so as to scan the entire examination volume.

Each pass of the search unit shall overlap a minimum of 10% of the transducer dimension perpendicular to the direction of the scan.

3.2 Rate of search unit movement

The rate of search unit movement shall not exceed 6 in. (150mm) per second.

3.3 Scanning Sensitivity

Scanning shall be performed at a gain setting at least two times the reference level, which is the primary reference response corrected for distance by the DAC curve in accordance with paragraph 5.2.

3.4 Equipment

a) The ultrasonic test instrument shall be the pulse-echo type. It shall generate, receive and present on a CRT screen pulses in the frequency range from 1 to 10MHZ.

b) The instrument shall provide a horizontal sweep with linearity within 1% of the full screen range.





c) The instrument shall have a calibrated gain control (Attenuator) electrically accurate to within 1dB over a range of not less 60dB. Adjustments shall be possible in increments no larger than 2dB/STEP.

d) The dynamic range of the instruments CRT display shall be such that a difference of 1dB of amplitude can be easily detected on the CRT.

e) Each instrument-transducer combination shall be capable of producing a minimum 3/4 CRT vertical scale deflection from an echo received from the 4-in. radius curved surface of the IIW calibration block with a minimum of 40dB amplification in reserve.

Search Units

Straight beam probes (single or twin type)

a) Straight beam (longitudinal wave) probes shall be round in shape and shall have an active area of not less than 10mm diameter not more than 25.4 mm diameter maximum.

b) The frequency shall be 1 to 5 MHZ.

c) Probes shall be capable of resolving the three reflections from the notch in the IIW reference block.

d) Probes of other sizes and frequencies may be used provided they are qualified as described in ASME code, sec. V, whichever is applicable and approved by C.A / COMPANY.

Angle Beam Probes

a) The oscillating element shall be approximately square or round in shape with dimensions which result in an included beam angle of approximately 15 degrees at 6dB less than the centerline maximum.

b) A probe with a transducer element in size from 8 to 16mm in width and from 9 to 16mm in height operating at 5MHZ shall be used, with exception of case-by-case examination of material 50mm, whereby 1MHZ may be used.

c) The probe shall produce a sound beam in the material being tested within + 2degrees of the following proper angles: 45, 60 and 70 degrees. The actual angle shall be checked or verified during calibration for testing and reported on the applicable test report.

d) The beam angle for each probe shall be verified after each 8 hours of use and the permitted tolerance of beam angle shall be +2.

3.5 Couplant

A suitable liquid couplant such as reagent grade glycerin or machine oil shall be used to couple search units to the surface being scanned.

Couplant materials used for examination shall be the same as used for the calibration.





3.6 Surface Preparation

Base metal & Weld metal

The base metal on each side of the weld shall be free of weld spatter, surface irregularities, or foreign matter that might interfere with the examination.

Prior to conducting ultrasonic examination the contractor shall ensure that the weld deposit and surrounding area are sufficiently smooth to avoid false or misleading defect indications.

Where the weld surface interferes with the examination, the weld shall be prepared as needed to permit the examination.

All components and welds to undergo ultrasonic test shall be at ambient temperature.

4.0 Instrument Calibration

4.1 Routine checks on the performance of instrumentation

a) The ultrasonic instrument shall be checked periodically for the screen height linearity the amplitude control linearity (dB Accuracy) and the time base linearity in accordance with the applicable calibration procedures as outlined in this procedure.

b) Frequency shall be checked before use and every 3 month intervals use thereafter in addition to the 3 monthly calibration of ultrasonic flaw detectors, annual calibration by an independent body traceable to national / international standards shall be performs.

c) All assessment checks shall be carried out with instrument suppression reject controls off or at zero.

d) The reports of these assessment tests shall be recorded on calibration record sheet shown in appendix-A Basic instrument calibration sheet

e) All instrument qualification records shall be reviewed and approved by an NDE level III technician before the instrument is permitted to be used. The records shall be kept in the NDE office.

Screen Height Linearity (Amplitude Linearity)

The ultrasonic instrument shall provide linear vertical presentation within + 5% of the full screen height for 20% to 80% of the calibrated screen height.

To verify the ability of the ultrasonic instrument to meet this linearity requirement.

a) Set a straight beam probe in position A (Fig.1) on the square (buttress) notch of IIW block.





b) Adjust the probe position to give a 2:1 ratio of amplitudes between the two indications, with the larger set at 80% of full screen height.

c) Without moving the probe, adjust sensitivity (gain) to successively set the larger indication from 100% to 20% of full screen height, in 10% increments (or 2dB steps if a fine control is not available), And read the smaller indication at each setting.

d) The reading must be 50% of larger amplitude, within 5% of full screen height.

e) The settings and readings must be estimated to the nearest 1% of full screen.

Amplitude Control Linearity (Attenuator Accuracy)

The ultrasonic instrument shall utilize an amplitude control accurate over its useful range to +10% or 1dB of the nominal amplitude ratio.

To verify the accuracy of the amplitude control of the ultrasonic instrument to meet this amplitude control linearity.

a) Position a straight beam probe as shown in Fig. 2 so that indication from the side-drilled hole (25mm deep, 1.5mm diameter) in the IOW beam profile block is peaked on the screen.

b) With the increases and decreases in attenuation shown in the following table, the indication must fall within the specified limits.

c) The settings and readings must be estimated to the nearest 1% of full screen height.





Indication Set at %

of Full ScreendB Control Change Indication Limits

% of Full Screen

80% -6 dB 32 to 48%

80% -12 dB 16 to 24%

40% +6 dB 64 to 96%

20% +12 dB 64 to 96%

Time Base Linearity (Sweep range calibration)

The ultrasonic instrument shall provide a horizontal sweep with a linearity within 1% of the full screen range.

a) Set a straight beam search unit in position B (Fig. 1) on the IIW block to attain 5 back reflection in the qualification range being certified.

b) Adjust the time base so that the first and fifth back reflections coincide with the appropriate scale marks.

c) Bring successive back reflections, in turn, to approximately the same heights (80% FSH).

d) The leading edge of each signal should line up/break the time base line at the approximate graticule line.

e) Record any deviations, but measured at approximately half full screen height.





f) Express the deviations from linearity as a percentage of the time base range between the first and fifth back reflections displayed. (Maximum acceptable= 1%)

g) Report using a range of 250 mm

4.2 Resolution

Resolution of the combined electronic instrument and probe shall proved on IOW (Institute of welding) and IIW (International institute of welding) standard blocks to determine whether reflectors in close proximity to each other can be indicated clearly and separately. The following method shall be used.

Straight beam probes

The straight beam probe shall resolve the reflectors at a range of 85mm (2mm slit), 91mm and 100mm (flat surface) of the IIW block (IIW-A1)

Angle Beam Probes

The angle probe shall resolve the three(3) hole at 2.5mm spacing for high frequencies (usually of 4 Mhz and higher), or the two (2) holes at 4mm specing for IOW frequencies (2 Mhz) of the IOW beam profile block in Fig. 3.

5.0 System Calibration

5.1 Basic Calibration Block





The material from which the block is fabricated shall be of the same product form and material specification or equivalent P-Number grouping as one of the material being examined.

For welds in ferrite pipe, the basic calibration block shall be a section of pipe of the same nominal size, schedule, heat treatment, and material specification or equivalent P-Number grouping of the material being examined.

The sizes of the basic calibration block and locations of the calibration reflectors shall be as shown in Fig. 4 and 5. The surface finish shall be representative of the surface of the piping, as per ASME V.

Distance Amplitude Correction (DAC)

5.2 Angle Beam Method

For pipe weld examination of a full wall thickness, the notches shall be used as calibration reflectors. The angle beam shall be directed toward the calibration reflector that yields the maximum response, setting the instrument adjustment to yield 80% screen height, The search unit shall then be manipulated, without changing instrument settings, to obtain the maximum responses from the calibration reflectors at the distance increments necessary to generate a 3-point DAC curve. Refer to Fig. 5.

Straight Beam Method

Straight beam examination, when required by company, or of needed to evaluate an angle beam indication, shall be calibrated on the side drilled holes in the basic calibration block. When required, the straight beam calibration shall be performed to the requirements of Article 4 of ASME sec. V (1998).

DAC Correction

If a point on the distance-amplitude correction (DAC) curve has decreased 20% or 2 dB of its amplitude, all data sheets since the last calibration or calibration check shall be marked void. A new calibration shall be made and recorded and the area covered by the voided data shall be reexamined. If any point of the distance-amplitude correction (DAC) curve has increased more than 20% or 2 db of its amplitude, all recorded indications since the last valid calibration or calibration check shall be reexamined with the corrected calibration and their values shall be changed on the data sheets.

5.3 Calibration Confirmation

Any change in the instrument, transducer, connecting cables, couplant, operator, or power supply shall require re-verification of calibration for the system.

Calibration shall be verified at regular intervals, four hours maximum throughout the examination period.

If during any calibration verification it is determined that the equipment is not properly functioning and readjustment is required, all of the product that has been tested since the last valid calibration or calibration check shall be reexamined with the corrected calibration.





If during any of the function checks , it is determined that the equipment is not function properly and within the limits then following steps shall be taken .

All of the checks shall be carried out and documented as soon as possible for other failures.

Equipments shall not be used until receiving required repair / adjustments and issuance of a new calibration certificate.

If find a equipment out of calibration all of the joints tested by it since last valid check shall be reexamined.





6.0 Establishment of Transfer Values

The reference level shall be adjusted to compensate for the differences in surface character and attenuation between the reference block and the material being tested, by means of the double probe technique as described in appendix B.

A transfer correction shall be performed and recorded once for each welded joint to be tested using part of the test surface exhibiting the roughest condition, except for repetitive testing of the same materials, size and configuration, in which case a transfer correction shall be performed at the beginning of every shift by the ultrasonic operator.

It may also be used to accommodate ultrasonic testing through light layer of primer upon demonstrating an acceptable technique to Company.

Calibration surfaces shall closely match that of the test surface to minimize correction required.

7.0 Scanning

7.1 Scanning Extent

Wherever feasible, the scanning of the examination volume shall be carried out from both sides of the weld on the same surface. Where configuration or sdjacent parts of the component are such that scanning from both sides is feasible, this fact shall be included in the report of examination. In addition, Company will be informed of restricted access situations.

7.2 Angle Beam Scanning

The examination volume shall be scanned with angle beam search units directed both at approximate right angles to the weld axis and at angles less than 15 degrees to the weld axis. The angle beam search unit directed parallel to the weld axis shall be rotated 180degrees and the examination repeated.

7.3 Straight Beam Scanning

When the straight beam scanning of weld is required, the weld and base metal shall be scanned to extent possible with the straight beam search unit.

The scanning of the adjacent base metal shall be performed to detect reflectors that might affect interpretation of angle beam results, and is not to be used as an acceptance-rejection examination. Locations and areas of such reflectors shall be recorded.

7.4 Evaluation

All indications which produce a response greater than 20% of the reference level shall be investigated to the extent that the operator can determine the shape, identity, and location of all such reflectors and evaluate them in terms of the acceptance standards given in





para. 8. In addition, all indications which produce a response greater than 50% of the reference level shall be recorded.

When linear indications are detected and in excess of 20% DAC and positive defect type interpretation cannot be ascertained, one of the following options shall be adopted:

Check with radiography if adequate. (Or MT if appears to be surface breaking access permitting).

Consider the indication as a crack.

This does not apply to spot reflectors; therefore sizing further investigation (ie supplementary NDT, flushing off cap, modifying technique to suit, etc.) should be carried out before rejection. Alternate sizing techniques such as 20 dB drop and / or maximum amplitude may be used as appropriate.

8.0 Acceptance Criteria

Acceptance criteria for piping are in accordance with table 1 of this procedure. for pipeline are in accordance with table 9 of BS 4515-1 standard .

9.0 Records

The results shall be recorded in the attached form by the certified personnel who perform the Ultrasonic examination.

Identification of repairs or retest

First repairs shall be identified as R1, second repairs R2 etc report identification shall indicate repair status i.e., R1 shall be identified as (report no.), Suffix A, R2, Suffix B. Additional testing without repair will be identified on the report suffixed as (Report no.), -1, -2 etc.

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TABLE 1 # ACCEPTANCE STANDARDS

NDT ACCEPTANCE CRITERIA FOR PIPING IS AS BELOW TABLE

Defect Type Max. Allowable

Planar

Defects

Cracks and lamellar tears

Lack of root fusion

Lack of side fusion

Lack of inter-run fusion

Lack of root penetration

Not Allowed

Cavities Isolated pores (or individual pores in a

group).

Uniformly distributed or localised

porosity.

Worm holes, crater pipes

Linear porosity

Lesser of t/3 or 3mm

2% by area (relevant area is length of the

weld Width of weld image)

Length < 6mm, Width < 1.5mm

Should be investigated in case this means

lack of fusion (not permitted).

Else treat as individual pores in a group.

Solid

Inclusions

Slag inclusions

Tungsten inclusions

1) Isolated

2) Grouped

Copper inclusions

Length < t/3

Width < t/3 max.2.4mm

Inclusions, Min. separation t/3; max.

Total length of t in weld length of 12t.

As isolated pores.

As localized porosity Not Allowed

Profile

Defects

Root concavity Radiographic density of indications shall

not exceed that of parent material





APPENDIX- A: UT EQUIPMENT CALIBRATION FORM

A-1: INTERNAL REFLECTION

INTERNAL REFLECTION

Ultrasonic Unit Model : Reort No. :Search Unit Size Serial No. :Type : Frequency :Calibration Date :Interval : Method :

Block Serial No. :

Result:

Equipment Is : Acceptable For Use Not Acceptable For UseRecalibration Due Date :

Calibrated By : Location Of Calibration :

Name :

Date :

Sign :

ULTRASONIC EQUIPMENT CALIBRATION REPORT





A-2: HORIZONTAL LINEARTY

HORIZONTAL LINEARTY

Ultrasonic Unit Model : Peport No. :

Search Unit Size : Serial No. :

Type :

Frequency :

Calibration Date :

Interval :

Method :

Block Serial No. :

Nummber Of Row 1 2 3 4 5

Accuracy Required :

Equipment Is : Acceptable For Use Not Acceptable For Use

Recalibration Due Date :

Total Qualified Screen Range Up To 500 mm

Calibrated By :

Location Of Calibration :

Name :

Date :

Sign :


Range

Display Height

Reading

Reading Error





A-3: DB ACCURACY AND AMPLITUDE CALIBRATION

Ultrasonic Unit Model : Report No. :

Search Unit Size : Serial No. :

Frequency :

Type:

Calibration Date :

Interval :

Block Serial No. :

1 2 3 4 5 6 7 8 9 10 11

Accuracy Required : Average % :

Equipment Is : Not Acceptable For Use

Recalibration Due Date :

Total Qualified Range :

Calibrated By :

Location Of Calibration :

Name :

Date :

Sign. :


dB ACCURACY AND AMPLITUDE CALIBRATION

Method :

dB ERROR

COLLECTIVE dB ERROR

NUMBER OF ROW

dB READING

DISPLAY HEIGHT

CORRECTED READING





APPENDIX- B: ESTABLISHMENT OF TRANSFER VALUES

Method for the determination of attenuation and transfer losses:

1) Transfer correction for angle beam testing shall be performed as per the following procedure:

2) The time base shall be calibrated to a suitable range a single probe having the same characteristics as the test probe.

3) Angle probes of the same characteristics as the test probe shall be used one (1) as a transmitter and the other as a receiver so that they can be used in a through transmission technique.

4) The probes shall be set in position (A) on the reference calibration block. See Fig. B-1.

5) In the set up shown in fig. B-1, the probe distance (position A,A1) shall be adjusted to obtain the maximum transmission amplitude response.

6) The gain control shall be adjusted to provide an 80% full screen height deflection.

7) The instrument gain setting (dB) is then recorded.

8) Steps (2) to (6) shall be repeated with probes in positions A and A2 (at two skip distance), in order to obtain as readings as possible.

9) The results are plotted as shown by line A in. fig. B-3.

10) Without altering the instrument sensitivity, using the same angle probes as in step (2) and (7) (one as a transmitter and the other as a receiver), the probes shall be set on the scuttle material to be tested (See fig. B-2) and the maximum amplitude response shall increase using the calibrated gain control to 80% FSH.

11) The instrument gain setting (dB) is then recorded.

12) The results are plotted as shown by line B in fig. B-3.

13) The difference in gain (dB) between the two lines at the appropriate sound path distance anticipated during actual testing is the transfer loss and is added to any gain setting derived from a reflectivity diagram.

Note: The results of this assessment shall be recorded on the Ultrasonic testing report.





APPENDIX- C: SPECIFIC PROCEDURE ATTACHMENTS

1) Angle beam scanning for reflector oriented transverse to the weld. The angle beam shall be directed essentially parallel to the weld axis. The search unit shall be manipulated so that the angle beam passes through the required volumes of weld and adjacent base metal specified by the referencing code section. The scanning shall be performed at a gain setting at two time's primary reference level. Evaluation shall be performed with respect to the primary reference level. The search unit shall be rotated 180 deg. And the examination repeated.

2) Evaluation Any imperfection which causes an indication in excess of 20% DAC shall be investigated to the extent that it can be evaluated in terms of the acceptance standards of the referencing code section.

All welds require a transverse scan.

Both Side, One Surface

1) Shear wave scan on butt weld configuration for example:

45, 60 scanning both sides from cap to full skip distance, 70 from cap to 1/2skip distance and 1/2 root gap only.

2) Compression waves scan on parent plate.





Thick. Range Used Probe Range

8 25 mm

0 0 - 100 mm

70 0 - 200 mm

60 0 - 125 mm

25 50 mm

0 0 - 100 mm

70 0 - 400 mm

60 0 - 200 mm

45 0 - 200 mm



2) Shear wave scan on external transition butt weld configuration for example:

45 & 60 or 70 scanning both sides from cap to full skip distance, if accessible scanning surface.






8 25 mm

0 0 - 100 mm

70 0 - 200 mm

60 0 - 125 mm

25 50 mm

0 0 - 100 mm

70 0 - 400 mm

60 0 - 200 mm

45 0 - 200 mm



2) Shear wave scan on branch weld configuration for example:

45, 60 scanning both sides from cap to full skip distance, 70 from cap to 1/2 skip distance and 1/2 root gap only.





0,45 scanning outside surface from main member run pipe or header only.


8 25 mm

0 0 - 100 mm

70 0 - 200 mm

60 0 - 125 mm

25 50 mm

0 0 - 100 mm

70 0 - 400 mm

60 0 - 200 mm

45 0 - 200 mm

APPENDIX- D: REPORT OF ULTRASONIC TESTING

Code/Standard:

Procedure No. : Rev.:

Equipment:Serial No:

Test Block: Model Freq. (MHz)

Angle Size (mm)

1 0

Couplant: 2 45

3 60

4 70Surface Condition: As Welded As Forged As Casted As Machined As Ground Other

Groove Type: V U X K OthersStraight Beam AngleBeam Contact Pulse-Echo

Size:

80 % From SDH FBH NOTCH B/REF. Other

Length Width Depth Acc Rej

Report No:

Report Date:

Examination Date:

Req. No :

Type of WPS

Search Unit:

Transfer Correction :

Standard Sensitivity:

No.Welders

ID

Discontinuity & Evaluation

Weld No.

LINE No:

DWG NO:

Material:

TestedLength

Result

LocationWall Thk.Dia

(Inch)

ULTRASONICEXAMINATION REPORT


PRO

BE

SP

EC

IFIC

AT

ION

Welding Process: SMAW GTAW

Maker

Length (mm)

Width (mm)

Depth (mm)

Acc Rej

1

2

3

4

5

6

7

Total Exam Length: mm

NDT Co.

Name: Name:

Date: Date:

TASDID

Name:

Date:

TPA

of Defect

WPS

Sketch:

No.ID

Date:

IOOC

Weld No.

Name:

ength (mm)

Remarks:

LocationThk.(mm)

(Inch)

Date: Date:

Sign Sign

Date:

Sign

Date:

Sign

ODS-QC-T-108

rsh-c3p-00-pl-pr-4121-d2

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