ML20132C732

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Rev 1 of Swri Nuclear Projects Operating Procedure SWRI-NDT-800-100, Manual Ultrasonic Exam of Corrosion- Resistant Clad Piping Welds at Hope Creek
ML20132C732
Person / Time
Site: Hope Creek PSEG icon.png
Issue date: 05/20/1985
From: Flack W, Fournell D
SOUTHWEST RESEARCH INSTITUTE
To:
Shared Package
ML20132C714 List:
References
SWRI-NDT-800-10, NUDOCS 8507300444
Download: ML20132C732 (19)
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SOUTHWEST RESEARCH INSTITUTE $,N[,-{UU~C NUCLEAR PROJECTS April 19e5 j' OPERATING PROCEDURE .%'UAL ULTRASONIC EXAMINATION OF CORROSION-RESISTANT CLAD PIPING WELDS AT HOPE CREEK EFFECTIVITY AND APPROVAL Revision I of this procedure became effective on 5-20-85 Otner revisions of tne base eacument may be effective concurrently. SA Approvals Written ByY# 1bY PW Date Tecnnical Review Date23 ( .,/ The following information may be used for convenience. Co oterion of this cortion is not msncatory. i Deviation No. Date Effective Procecure Sectients) Affected Notes: HOPE CREEK GEN. STA. i PUBUC SERVICE STARTUP GROUP ISSUED FOR TEST g M 31'85 8507300444 eso723 PDR ADOCK 05000354 G PDR Reference

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' SOUTHWEST RESEARCH INSTITUTE SwaI-NDT-a00-lac ~ Revision 1 April 1995 g , j*, NUCLEAR PROJECTS OPERATING PROCEDURE Page 2 of R MANUAL ULTRASONIC EXAMINATICN OF CORROSION-RESISTANT CULD PIPING WELDS AT HOPE CREEK SwRI-NDT-800-100 1 PURPOSE This procedure provides the technical information and detailed steps required to ensure a complete, accurate manual ultrasonic examination of welds and adjacent base material in corrosion-resistant clad pressure piping at the Hope Creek Generating Station in accordance with the applicable AS:E Boiler and Pressure Vessel Codes. 2 SCOPE AND APPLICATION Welds and the adjacent base material in corrosion-resistant clad piping with a nominal thickness range of greater than 0.4 to 5.0 inches shall be exam-ined in accordance with this procedure. Manual, contact, pulse-echo, longitudinal-wave straight-beam and refracted longitudinal-wave angle-beam ultrasonic techniques shall be utilized for these examinations. Welds to be examined shall be as specified in the applicable SwRI Examina-tion Plan. d This procedure is intended to be used only for instrument calibration, examination, and the recording of indications, and shall not be used for the sizing of indications. 3. APPLICABLE DOCTfENTS (1) ASME Boiler and Pressure Vessel Code, Section XI,1977 Edition with Addenda through Susser 1978, " Rules for Inservice Inspection of Nuclear Power Plant Components" (2) ASME Boiler and Pressure Vessel Code, Section II, 1977 Edition with Addenda through Summer 1978, " Welding and Brazing Qualifications" 2 (3) ASME Boiler and Pressure Vessel Code, Section V, 1977 Edition with Addenda through Sumner 1978, " Nondestructive Examination" (4) SwRI Nuclear Quality Assurance Program Manuall(NQAPM) O som Form OA 3 2

' SOUTHWEST RESEARCH INSTITUTE Swar-NDT-800-too Revision 1 O April 1985 NUCLEAR PROJECTS OPERATING PROCEDURE g* Page 3 of 17 3.1 Calibration and Examination Records SwRI-NDTR Form No. Revision Date 17-18 7-31-75 17-19 12-01-83 17-25 7-10-80 17-37 2-18-80 17.-J9 8-19-80 17-90 8-19-80 4. RESPONSIBILITY (1) The Director of the Department of Engineering Services, Qualir.y Assurance Systems and Engineering Division, shall be responsible for the preparation, review, approval, and control of this procedure. (2) The Project Manager shall be responsible for the implementation of this procedure in accordance with the NQAPM specified in the appli-cable SwRI Project Plan. (3) The examiner shall be responsible for implementing the requirements of this procedure. l (4) The Manager of the Support and Administration Sectica, Quality Assur-ance Systems and Engineering Division, shall be responsible for stor-age of records generated in accordance with this procedure. 5. PERSONNEL AND EQUIPMENT 5.1 Personnel Certification 1~ Personngl performing ultrasonic examinations shall be certified i in accordance with SwRI NQAP 11-1, "Special Process Control." 5.2 Reference Block The reference block used for screen distance calibration and verification shall be of the same material as the production material, stain - less steel, and shall be an AWS Type DC. l 5.3 Basic Calibration Block The basic calibration block shall be fabricated from material of l the same nominal diameter and of the same nominal wall thickness or pipe j schedule as the pipe to be examined. This material shall be from one of the l ( l l Swal Form OA 3-2 ,--..,m... ,,,_n. ~-

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_3 SOUTHWEST RESEARCH INSTITUTE so-m-m-[ Revision 1 l$[ April 1985 O ~ '_ A NUCLEAR PROJECTS OPERATING PROCEDURE 4 Jc, Page 4 of 17 materials specified for the piping being joine[ily the weld. The finish on the surfaces of the basic calibration block shall be representative of the surf ace i finishes of the piping. When the examination is to be performed from only one side of the veld, the calibration block asterial shall be of the same specification as the material on that side of the weld. If material of the same specification is not available, sacerial of similar chemical analysis, tensile properties, and metallurgical str.ueture any be used. Calibration reflectors for the examinations shall be three equal-diameter end-drilled holes, three equal-diameter side-drilled holes, located at 1/4T, 1/2T and 3/4T, and two notches (one transverse and one axial) 34chined on the inside surface of the basic calibration block. Approved drawings of basic calibration blocks to be used in accordance with this procedure are contained in the applicable SwRI Examination Plan. 54 Search Units Search units shall be selected from the following: t (1) Straight-Beam Nominal Production Material Thickness Nominal Search Unit Size 2.0" or less 1/4" Round 1 0" to 3.0" 3/8" Round l 2.0" to 4.0" 1/2" Round 3.0" to 5.0" 3/4" or 1" Round i o l (a) The nominal straight-beam longitudinal-wave search unit frequency for examining austenitic material l shall be from 1.5 MHz up to and including 2.5 Mri:. (2) 1 An3 e-Beam (a) Search unit wedges shall be fabricated to produce 45* 12' refracted longitudinal waves in austenitic material. I f [ (b) The exit point of the sound beam and the actual refracted beam angle of refracted longitudinal-wave search units shall be determined on an IIW block. The exit point shall be marked on the search unit wedge. SwAI Fonn QA 3 2

1 ~ ~ SOUTHWEST RESEARCH INSTITUTE SuR1_y3:_300_100 g-] Revision 1 e NUCLEAR PROJECTS OPERATING PROCEDURE ~ J r-y Page 5 of 17 t (c) The nominal angle-beam ref racted longitudinal-wave search unit size shall be 1/4" x 1/2" dual. (d) The actual angle-beam refracted longitudinal-wave search unit frequency for examining austenitic mate-rial shall be from 1 5 up to and including 2.5 MHz. Other search unit frequencies may be used only if they produce equivalent or superior results. (e) The transducer used for each thickness and diameter shall be selected from Appendix 1. 5.5 Ultrasonic Instrument The examiner shall use a Sonic FTS Mark I ultrasonic instrument which shall be aligned and shall display a valid alignment calibration tag as required by NQAP 10-1. 5.6 Couplant (1) USP-grade glycerine shall be used when performing ultra-sonic calibrations and examinations in accordance with this procedure. (2) USP-grade glycerine shall be certified for sulfur content and total halogens in accordance with ASTM D-129-64 and ASTM D-808-63. The residual amount of total sulfur or halogens shall not exceed 1% by weight. (3) Couplant materials used for examinations shall be the sane as used for the calibration. 5.7 Thermometer e The thermometer to be used to measure the calibration block and component temperatures shall be calibrated and certified and shall display a valid calibration tag as required by NQAP 10-1. 6. CALIBRATION METHOD 61 Instrument Linearity Ultrasonic instrument linearity shall be verified, as a minimum, within one day before and one day af ter examining all welds to be examined with this procedure or every three monthe, whichever is. less, in accordance with Paragraphs 6.1.1 and 6 1.2. Data required shall be recorded on the applicable q[' referenced on each applicable SwRI Sonic Instfusent Calibration Record. SwRI Instrument Linearity Verification Record, and the sheet number shall be SwRI Form QA 3 2

. =. - . SOUTHWEST RESEARCH INSTITUTE Sval-m -se-m Revision 1 April 1985 NUCLEAR PROJECTS OPERATING PROCEDURE Page 6 of 17 s-- The calibration verification of Paragrapn 6.5.1 shall constitute a valid check of the instrument linearity. If a calibration verification does not fall within the tolerances required by Paragraph 6.5.3 due to instru=ent failure, an instrument linearity check must be performed prior to continuing examinations and all components examined since the last valid calibration veri-fication shall be reexamined. NOTE The setting of the damping control shall be recorded in REMARKS on the SwRI Instrument Linearity Verification Record. The damping control shall be in the same position during linearity verification, calibrations, and exa=inations or a new linearity verification shall be performed. 6.1.1 Amplitude Linearity (1) Position a shear-wave search unit on a basic calibration block and obtain at least two reflectors. (2) Ad just the search unit position to give a 2:1 ratio between the two reflectors, with the larger reflector set I ) at 80% of full screen height (FSH) and the smaller \\~ / reflector set at 40% of FSH. [ (3) Without moving the search unit, set the larger reflector to 100% of FSH, and record the amplitude of the smaller reflector, estimated to the nearest 1% of FSH. (4) Successively set the larger reflector from 100% to 20% of FSH in 10% increments (or 2 dB steps if a fine control is not available); observe and record the smaller reflecter estimated to the nearest 1% of FSH at eacn setting. The reading must be 50% of the larger amplitude within 5% of FS T. e 6.1.2 Amplitude Control Linearity (1) Position a shear-wave search unit on a basic calibration block to obtain saximum amplitude from an applicable reflector. (2) Without moving the search unit, set the indication to the required percent of FSH and increase or decrease the dB as specified below. The estimated signal shall be recorded to the nearest 1% of FSH and shall fall within the limits /"'s of the following table: \\m-( / Swal Form QA 3 2

_q 7- ) 1 SOUTHWEST RESEARCH INSTITUTE Suu_m-se_m Revision 1 O April 1985 j 4, NUCLEAR PROJECTS OPERATING PROCEDURE '_l [ h

  • Page 7 of 17 Indication dB Control Indication Set at % of FSH Change
  • Limits, % of FSH 80%

-6dB 32 to 48% 80% -12dB 16 to 24% 40% +6dB 64 to 96% i 20% +12dB 64 to 96%

  • Minus denotes decrease in amplitude; plus denotes

~ ' Increase. 6.2 Calibration \\ The ultrasonic calibration shall be completed prior to the { examination. The REJECT control shall be maintained in the O position during calibration and examination. The FREQ MHz control shall be turned to the setting of 1 for 1.5 MHz search units and to 2 for the 2 25 to 2.5 MHz search units for straight-beam calibrations and examinations. The FREQ MHz control shall be turned to the setting of 5 for all angle-beam calibrations and examinations. The instrument gain controls shall not be changed once the primary reference response has been established. Rotating the beam into the corner formed by the hole and the side of the calibration block while setting up the distance amplitude correction may produce a higher amplitude at a longer been path. This beam path shall not be used for calibration. o The type and length of the search unit cable shall be recorded on the SwRI Sonic Instrument Calibration Record, and all other information blocks on the form shall be filled in. 6.2.1 Temperature The temperature of the calibration block shall be within 25'F of the component temperature and shall be recorded on the SwRI Sonic Instrument Calibration Record for the initial calibration and each verification. The surface temperature of the component to be examined shall be taken prior to performing an examination and shall be recorded on the appli-cable SwRI Examination Record. t { Swm Form QA 3-2

~ SOUTHWEST RESEARCH INSTITUTE sal-m-aw-lx Revision 1 April '.985 NUCLEAR PROJECTS OPER ATING PROCEDURE Page 8 of 17 6.3 Calibration Method 6.3.1 Straiaht-Beam Distance Calibration The screen distance chosen shall be the shortest applicable size to include at least 1/4t beyond the thickest production material to which the search unit is applied. Observing back reflections from the applicable reference block, set up the required linear sound path distance along the screen baseline. 6.3.2 Longitudinal-Wave Angle-Beam Distance Calibration (1) Position an appropriate straight-beam longitudinal-wave search unit described in Paragraph 5.4(1) on the AWS DC reference block. Observe the back reflection on the instrument screen and set up the required linear sound l path distance along the baseline of the screen, which shall be the shortest applicable size to include at least I () 1/8 vee path past the anticipated examination range. (2) Using the same instrument, position the angle-beam [ refracted longitudinal-wave search unit described in Para-graph 5.4(2) on the AMS D&C reference block and observe the signal from the radius. Using only the delay control, adjust this signal to the appropriate location on the instrument screen baseline. i NOTES Examiners should be able to identify the required longitudinal-wave signal, since a shear-wave signal say also be present on the screen. The longitudinal waves will damp on the radius. The shear component of the ultrasonic waves generated will not damp on the radius. 6.3.3 Straiaht-Beam Distanca Amolitude Correction A DAC curve shall be established by utilizing responses from the basic calibration hole's. 6.3.3.1 Production Material 1 Inch or Less in Thickness (1) Position the straight-beam search unit to obtain maximum O response from the 1/2T hole and set this primary reference response to 50% *S: of FSH. ( -.-2 . = _. -.. _ _ _, - Swas poem QA 3

( .. c SOUTHWEST RESEARCH INSTITUTE swu-sDT-8oo-too Revision 1 April 1985 NUCLEAR PROJECTS OPER ATING PROCEDURE sqzy Page 9 of 17 (2) Draw a straight horizontal line on the instrument screen the primary reference amplitude to extend a distance at equal to the nominal thickness of the production material. (3) Signal amplitudes for indications recorded shall be refer-enced as a percentage of this lina. 6.3.3.2 Production Material Greater Than 1 Inch in Thickness ~ ' ~ (1) Position the straight-beam search unit to obtain maximum response from the calibration hole selected from the following, which produces the highest amplitude: Hole 1/4T 1/2T 3/4T (2) Set this response to 50% *5% of FSH and mark the amplitude on the screen. The gain controls shall not be adjusted [~ i O once the primary reference response has been established. (3) Obtain maximum response from the remaining calibration holes; mark and join all amplitude points with a smooth curved line which shall extend 1/4T beyond the last qualified calibration point. 6.4 Angle-Beam Distance Aeolitude Correction (1/2 Vee-Path) NOTE The slope of the distange amplitude correction (DAC) curve shall be constructed from the holes parallel to the axis of the basic calibration block. The notch perpendicular to the axis of the curved basic calibration block shall be utilized to establish sensitivity when examining circumferential welds or for transverse examinations on longitudinal welds. The axial notch shall be used to establish sensitivity when examining longitudinal Velds or for transverse examinations on circumferential welds. (1) Position the 45* search unit to obtain a maximum response from the vee path position selected from the following, which produces the highest amplitude: Vee-Path Positions 1/8 2/8, 3/8 Swm Form QA 3-2

.s 1 ~ SOUTHWEST RESEARCH INSTITUTE sma:-m-30c,-12 Revision 1 3

et April 1985 s

NUCLEAR PROJECTS OPERATING PROCEDURE g _j" Page 10 of 17 (2) Set the primary reference response to 80% c5~ of F5'd and mark this amplitude on the screen. (3) Obtain maximum response from the remaining vee path posi-tions; mark and join all amplitude points with a smooth 1 curved line which shall extend 1/8 vee path beyond the last qualified calibration point. (4) ~" Establish the sensitivity from the inside surface notch by setting the indication amplitude at the level of the DAC curve. This primary reference amplitude shall be =arked with an I. Record the primary reference level gain set-tings under INSTRUMENT SETTINGS. 6.5 Calibration verification 6.5.1 Sweep Range and DAC Curve Verification Sweep range calibration shall be verified on the appropriate /~'T reference block; DAC curve calibration, if applicable, shall be verified on the V appropriate basic calibration block: (1) Prior to a series of examinations (2) With any substitution of the particular search unit cable used in calibration (3) With any substitution utilizing the same type of power source; e.g., a change of batteries (4) At least.every 4 hours during the examination (5) $t the completion of a series of examinations (6) Whenever the validity of the calibration is in doubt 6.5.2 verification of Calibration Reflectors at Scanning Speed The examiner shall verify the presence of the calibration reflec-tors at scanning speed. NOTES It is not necessary to assure that this check confirms the signal amplitude at () 100% of reference level, but merely to demonstrate that the signals frcm the calibration reflectors are readily observable at scanning speed. Swns Form QA 3-2

_,v SOUTHWEST RESEARCH INSTITUTE s u-m -soo-too O Revision 1 April 1985 NUCLEAR PROJECTS OPER ATING PROCEDURE g* Page 11 of 17 The following statement shall be documented on the SwRI Sonic Instrument Cali-bration Record and initialed: " Calibration reflectors have been verified at scanning speed." 6.5.3 Calibration Channes (1)- -Perform the following if any point on the DAC curve has decreased more than 20% of FSH or 2 dB in amplitude, or any point on the sweepline has moved more than 10% of sweep division reading: (a) Void all examinations referring to the calibration in question and performed af ter the last valid cali-bration verification. (b) Conduct a new calibration. (c) Reexamine the areas for which examinations have been voided. (2) Perform the following if any point on the DAC curve has increased in amplitude more than 20% of FSH or 2 dB: (a) Correct the calibration. (b) Reexamine all indications recorded since the last valid calibration verification. (c) Enter proper values on a new SwRI Examination Record. 6.5.4 Recal%bration l Substitution of any of the following shall be cause for recali-bration: (1) Search unit transducer or wedge (2) Search unit cable type or length (3) Ultrasonic instrument (4) Examination personnel (5) Couplant V s (6) Change in type of power. source; e.g., a change from direct to alternating current Swal Form QA 3 2

1 SOUTHWEST RESEARCH INSTITL'TE so. - m _300_ uc j Revision 1 O April 1985 =r. NUCLEAR PROJECTS OPERATING PROCEDURE j Page 12 of 17 7. EXAMINATION 71 Examination Areas 7.1.1 Welds in Corrosion-Resistant Clad Piping Welds in corrosion-resistant clad piping with a nominal thickness of greater than 0.4 to 5 0 inches shall be examined from the outside surface of the pi.pe. 7.1.2 Preservice Examination Areas When specified in the applicable examination plan for preservice examinations only, the lower 1/3 volume (base material plus cladding) shall be examined for the length of the cladding plus 1/4 inch on each end. This is to provide a complete baseline data package for comparison with any inservice exam-inations of this volume. The area defined by E, F, G, and H in Figure 1 is the area to be examined. 7.1.3 Inservice Examination Areas For inservice examinations, the required weld volume ar.d 1/4 inch of material from the outside surface veld fusion line on each side of the veld, i defined by A, B, C, and D in Figure 1, shall be examined. 1 NOTI l The metal path corresponding to the lower 1/3 examination volume shall be clearly marked on the instrument screen. Determination of this volume shall be made for each veld based on the preservice or inservien examination requirements and on thickness measurements taken in accordance with Paragraph 7.5. 7.2 Surfacilt Condition The contact surfaces shall be free from veld spatter, roughness, or other conditions which interfere with free movement of the search unit or impair the transmission of ultrasound. 7.3 Indication Length Zero Reference (Lo) Location Areas to be examined in accordance with this procedure shall have an Lo marked in accordance with the applicable revision of SwRI Nuclear Projects Operating Procedure IX-FE-103 1 i 7.4 Scanning When possible, scanaing shall be performed at a minimum gain setting of 2 times the reference level sensitivity. . Swai Form QA 3 2 ~

SOUTHWEST RESEARCH INSTITUTE p SuRI-m _soo_1oo ( Revision 1 April 1985 t NUCLEAR PROJECTS OPERATING PROCEDURE o 4 Page 13 of 17 Instrument gain setting for scanning shall be datermined on the { basic calibration block as follows for each primary reference level utilized: i (1) With the instrument at the primary reference level, manip-ulate the search unit on the basic calibration block to obtain a signal of 40% of FSR from a calibration reflector (side-drilled hole). (27 "' Add 6 dB gain by utilizing the 6 dB switch (if present), the fine gain control, or a combination of the fine and 1 coarse gain controls, and choose any method which yields signal response within 22 dB of 80% FSH. (3) This amplitude and method shall be recorded on the SvRI Sonic Instrument Calibration Record and shan be used fcr all scanning during the valid calibration period. Scanning overlap shall be a minimum of 25% of the search unit piezoelectric element dimension perpendicular to the direction of the scan. l The search unit movement rate shan not exceed 3 inches per second. 1 7.5 Lamination Sean and Thickness Measurements Calibration for these examinations shan be in accordance with Paragraph 6 3.1. A longitudinal-wave lamination / bond and defect scan shell be per-formed before the initial angle-beme examination of welds and adjacent base mate-rial, covering the entire area through which the angle beam is to be passed. The first back reflection shall be maintained at a minimum amplitude of between 50% and 90% FSH. Intermediate echoes having an amplitude equal to or greater than the remaining back reflection shan be recorded as follows: Obtain a back reflection signal from an indication-free area and adjust this signal to 80% i5% of FSH. Record all intermediate indications with amplitudes equal to or greater than the remaining back reflection on the appro-priate SwRI Examination Record. Areas of total loss of back reflection accee-panying the intermediate echo shall also be recorded. Thickness measurements shan be taken at a minimum of three points edjacent to Lo (on the centerline of the veld and at one point in the base material on each side of the weld) and shan be recorded on the appropri- \\ ate SwRI Examination Record. Locations of measurements which cannot be taken adjacent to la shan also be recorded. Swn! Form QA 3-2 t_

' SOUTHWEST RESEARCH INSTITUTE sun-m-m-m Revision ; April 1985 NUCLEAR PROJECTS OPERATING PROCEDURE g g- ;- Page 14 of 17 i NOTE Due to the cladding, attenuation measurements shall not be performed. 7.6 Examination of Butt Welds in Piping 7.6 1 Angle-Beam Examination for Indications Parallel with the Weld Angit-btam examinations for circumferential velds shall be accom-plished using the required angle-beam search unit from both sides of the weld. For this examination, the sound-beam shall be directed perpendicularly into the weld to detect indications parallel with the weld. Calibration for these exami-nations shall be in accordance with Paragraphs 6 3 2 and 6.4. 7.6.2 Alternate Examination Any areas of the veld not receiving complete coverage from each side of the weld shall be examined from the accessible side of the weld with the required angle-beam search unit, and with a straight-beam search unit that shall be applied to the surf ace of the weld crown in the af fected areas. Cali-bration for the straight-beam longitudinal-wave search unit shall be in accor-dance with Paragraphs 6.3.1 and 6.3.3 7.6.3 Angle-Beam Examination for Indications Perpendicular to the Weld A ref racted longitudinal-wave angle-beam examination shall be conducted on each weld by placing the required search unit on the weld crown j with the sound beam directed into and parallel with the weld to detect indica-tions perpendicular to the veld. The entire length and width of the weld shall be scanned with the search unit beam directed in this manner from two opposing directions. 7.6.4 Angle-8eam Examination for Indications in Base Material Percen-dicular to the Wald A ref racted longitudinal-wave angle-beam examination shall be conducted on the adjacent base material on each side of the veld by placing the required search unit on the base sacerial with the sound beam directed parallel with the weld to detect indications perpendicular to the weld. The base mate-rial area as described in Paragraphs 7.1.2 and 7.1.3 shall be scanned with the search unit directed in this zanner from two opposing directions. 7.7 Postexamination Cleaning Arrangements shall be made with the customer for postexamination O removal of couplant materials. SwAI Form CA 3 2 l k

SOUTHWEST RESEARCH INSTITUTE Swn - m -so0- m Revision 1 O April 1985 NUCLEAR PROJECTS OPERATING PROCEDURE n' Page 15 of 17 8. _ RECORDING CRITERIA CAUTION The minimum shear metal path shall be determined prior to the examination. Extreme care shall be exercised in recording signals at or past this metal path to preclude recording of shear indications. ~ . Indications shAll be recorded in accordance with the techniques outlined in the applicable revision of SwRI Nuclear Projects Operating Procedure IX-FE-Ll7. Ultrasonic reflectors within the examination volume as marked on the instrument screen in accordance with Paragraph 7.1 2 or 7.1.3 that produce a response greater than 50% of the reference level shall be recorded on the appro-priate SwRI Ultrasonic Examination Record. The end points of the indication as determined by 100% DAC shall be recorded. Indications greater than 50% of the reference level attributable to geome-O try shall be recorded only once, even if the amplitude of the indication drops below the required recording amplitude along the weld. These indications shall be investigated by a Level II or a Level III examiner to determine the shape, identity, and location of the reflector. If indications that have been recorded as geometry have been investigated and found to be nongeometric reflectors, the entire weld shall be reexamined, recording all nongeometric reflectors and other reflectors not previoasly recorded at least once. Indications investigated and found to be other than geometrical in nature, regardless of the amplitude, shall be reported to the customer for evaluation. Sizing of indications shall not be conducted with the procedure. Scanning limitations shall be recorded. t t 9. EVALUATION Evaluation of reportable indications shall be the responsibility of the customer and shall be conducted in accordance with the applicable ASME Boiler and Pressure Vessel Code, Section XI, Article IWA-3000. llO \\ l Swm Form CA 3-2 l

p ' SOUTH' NEST R ES EARCH INSTITUTE sun - m -so m Revision 1 T\\ April 1985 U. NUCLEAR PROJECTS OPERATING PROCEDURE -c g .f Page 16 of 17 10. RECORDS Documents generated in accordance with this procedure shall be stored as specified in the SwRI Project Plan. The customer shall receive copies of these documents in the Examination Report, unless specified otherwise in the SwRI Project Plan. APPENDIX 1 Pipe Diameter Nominal Pips Thickness Crossover (Focus) Depth { 12" .68" .75" 20" 1.0" TBD* 28" 1 08" T3D*

  • To be determined.

e 4 O l Swel Poem CA 3 2

N 3 3, , s ~ SOUTHWEST RESEARCH INSTITUTE s:A l-m - m -1 x Revision 1 0 April 1985 NUCLEAR PROJECTS OPERATING PROCEDURE Page 17 of 17 =n Figura i ]' \\ 'ku C'_= ^ ^ *n g [ / / / ki / ! / / ,#',' / / / ' h / 2 3 \\ l l e 11 s l E, -- - - - - - A '= 3 = q -== fc,r,i. p ~ s..,, ..,m ,1 ~, - - 1 l 1 C D E I 1 s L/4' CLacA*dg L!L' 5 s C3ROSION-RESIS*ZANT C:.AD FIPING ' E S ,s ~TMAP.CH 70U2fE A-B-C-0 5 I-F-3-E e s. \\ \\ ~ M SwAl pesm QA 3-2 t_ m.

r .<..a..c.., g. J PROCEDURE DEVIATION 2 Prosedure Aewson Devenort SwAl.NDT. 800-100 1 2 The faisons seminogen areas are sWesses w sus esveseen: Manual ultrasonic examintion of corrosion-resistant clad piping welds at Hope Creek IRIA DEVIATION str7ERCEDES DEVIATION 1. Theressmasownereen. wo. asnamammamas: Change section 6.3.3 to read as follows: 6.3.3 Straiaht-Baam Dist_sace Amplitude Correction A DAC curva shall be established by utilisins responses from the basic calibration holas. (1) Pea 1 tion the straisht-beam search unit to obtain maximum response freni the ca11 oration hole selected from the following, which produces the highest amplitude: Hels. 1/4T 1/2T 3/4T l AssenseeNrosmeden: l This deviation is necessary to change the procedure to the special requirments for corrosion-resistant clad piping welds. l l T l H ' n't 0:rK cy s g 4 po

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Swt1 NDT-800-1/1 _Q Deviation 2 Page 2 of 2 (2) Set this response to 50% t 5% of PSE and mark the amplitude on the screen. The gain controls shall not be adjusted once the primary reference response has been established. (3) obtain maximum response from the remaining calibration holes; mark and join all amplitude points with a smooth curved lina which shall azcond 1/4T beyond the last qualified calibration point. Change 6.4(2) to read as follows: (2) Set the primary refersace response to 50% 5% of F8R and mark this amplitude on the screen. j Add the following nors under 7.1.2: 1911 l The I.D. clad / base asterial fusion line should be determined with an angle-beam technique. O ' '"* '****"'" "' ' ***** 7 7.1.4 Lonnitudinmi Welds _in Corrosion-Resistant Clad Pinica In conjunction with the examination of circumferential welds, any portica of an intersecting longitudinal weld located under the clad overlay adjacent to the circumferential weld will be examined and the .__ _ results entered on a separate SwRI Examination Record' Change the first and second paragraph of 7.5 to read as follows: Prior to the initial angle-beam examination. a straight-beam longitudinal-wave lamination scan shall be performed covering the entire araa through which the angle-beam is to be passed. 8ereen distance 4 calibration for this examination shall be conducted in accordance with Paragraph 6.3.1. Scanning sensitivity shall be as required to naintain the first back reflection at an amplitude of 80% 5% of IsR. O I. \\ /}}

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