ML19207B940
| ML19207B940 | |
| Person / Time | |
|---|---|
| Site: | Shoreham File:Long Island Lighting Company icon.png |
| Issue date: | 04/07/1978 |
| From: | Johnsen L NUCLEAR ENERGY SERVICES, INC. |
| To: | |
| Shared Package | |
| ML19207B939 | List: |
| References | |
| 8040475, NUDOCS 7909060164 | |
| Download: ML19207B940 (34) | |
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80A0475 MANUAL ULTRASONIC EXAMINATION PROCEDUES FOR VESSEL N0ZZLE SAFEEND AND CLOSURE HEAD N0ZZLE-FLANGE WELDS t
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NUCLE AR ENERGY SERvlCES. INC
PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 1 0F 32 MANUAL ULTRASONIC EXAMINATION PROCEDURES FOR VESSEL N0ZZLE SAFEENDS AND CLOSURE HEAD N0ZZLE-FLANGE WELDS LONG ISLAND LIGHTING COMPANY SHOREHAM NUCLEAR POWER STATION UNIT 1 rg , y <
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PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 2 0F 1 Rev. Prep'd No. Date Description -
Reason By ' App'd By 1 7/27/ Changed; 2.1(4) & (5),5.2.3, General revision to incorporate F. T.
79 5.3.1, 6.1(2) & (3), 7.3.2, latest NES requirements. Carr 5.2.7, 7.3.3, and Figures ?.,5, 6, and 7. Incorporated Field Change 1 i
fN g/7/11 Deleted; 2.3 Added; 5.1.3 CRA-972
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PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 3 0F 32 MANUAL ULTRASONIC EXAMINATION PROCEDURES FOR VESSEL N0ZZLE SAFEENDS AND CLOSURE HEAD N0ZZLE-FLANGE WELDS 1.0 SCOPE 1.1 Area of Examination This document covers the ultrasonic examination procedures for :
(1) Main Steam (N3) nozzle to transition piece welds.
(2) Jet Pump Instrumentation (J P I ) (N8) nozzle to safeend piece welds.
(3) Control Rod Drive (CRD) (N9) return nozzle to cap weld.
(4) Core Differential Pressure ( AP) (NIO) nozzle to safeend piece weld.
(5) Closure Head Vent (N7) and Instrumentation (N6) nozzle to flange welds.
1.2 Type of Examination 1.2.1 Volumetric examination shall be performed using ultrasonic pulse echo nominal 450 (or 25 ) angle beam shear wave and 00 long-itudinal straight beam techniques applied to the outside surfaces of the piping, safeends, transition pieces and flanges.
1.2.2 The examination shall be performed manually using contact search units (transducers).
l.3 Time of Examination i
These procedures shall govern the preservice examination and re-examination of repaired areas of the pipe welds as required by the ASME Boiler and Pressure Vessel Code,Section XI.
1.4 Weld Configuration 1.4.1 The nozzle and safeend/ transition piece / flange weld configurations covered by this procedure are shown in Figures 1 through 6.
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PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 4 0F 3L 1.4.2 Nominal weld thicknesses range from 0.28" to 1.78" and are specified in Figures 1 through 6.
1.5 Materials The nozzles, safeends and fittings are constructed of austenitic stainless steel, carbon steel, or inconel, as designated in Figures 1 through 6.
2.0 REFERENCES
2.1 Reference Documents The following documents form a part of this examination procedure:
(1) ASME Boiler and Pressure Vessel Code,Section XI, 1971 Edition, and the Summer of 1972 Addenda.
(2) AStiE Boiler and Pressure Vesse1 Code, Section i11, 1971 Edition, and the Summer of 1972 Addenda.
(3) ASNT Recommended Practice, SNT-TC-1A, Supplement C, Third Edition (1971).
(4) NES Procedure for Ultrasonic Instrument Linearity Verification, 80A9053. b (5) ConAm Procedure for Certifying Inspection Personnel, CUTP-1, Rev. 5, August 1978. d 2.2 Applicable Drawings The following drawings are part of this procedure:
(1) CE Assembly Drawing E-234-233 (2) CE Assembly Drawing E-234-229 (3) CE Assembly Drawing E-234-275 (4) CE Assembly Drawing E-234-245 (5) CE Assembly Drawing E-234-470 (6) GE Drawings 137C5644, 137C5632 A
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NUCLEAR ENERGY SERVICE'!.lNC.
PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 5 0F 32 3.0 PROCEDURE CERTIFICATION The examination procedures described in this document comply with Section XI of the ASME Boiler and Pressure Vessel Code, 1971 Edition, including 1972 Summer Addenda, except where examination coverage is limited by part geometry or access.
4.0 PERSONNEL CERTIFICATION 4.1 Personnel Certification Requirements 4.1.1 Each person performing ultrasonic examinati'on governed by this procedure shall be certified in accordance with References 2.1 (1) , 2.1 (3) and 2.1 (5) above.
4.1.2 An examination crew shall consist of one or two members as needed. At least one member of each crew shall have a minimum qualification of Level 11 in accordance with the above referenced documents. The remaining member (s) shall have a minimum qualification of Level 1.
4.2 Personnel Records 4.2.1 Records of personnel qualification shall be maintained by the Examination Contractor.
4.2.2 A copy of the examiner's certification summary, and a current eye test as required by SNT-TC-1A shall be filed with each permanent examination record, with a copy submitted to the plant owner or his agent, prior to performing examinations per this procedure.
5.0 EXAMINATION REQUIREMENTS 5.1 Examination Frequency 5.1.1 The nominal examination frequency shall be 2.25 MHz for all straight beam and angle beam examinations.
5.1.2 Other pulse frequencies shall be used if such variables as material attenuation, grain structure, etc., necessitate their use to achieve penetration or resolution. This informa-tion shall be recorded on the data sheets.
5.1.3 5.0MHz may be used for straight beam examination in order to achieve resolution of the side drilled holes in the calibration standards.
g 5.2 Examination Angles and Coverage 5.2.1 The intent of this procedure is to provide maximum examination coverage to ensure weld integrity. Each weld shall be scanned with minimum 25% overlap of the transducer element width (Diameter) for each scan pass.
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PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 6 0F 32 5.2.2 The rate of search unit movement shall not exceed six (6) inches per second.
5.2.3 Each weld and the required volume (WRV) of metal for one (1) wall thickness on each side of the weld shall be ultrasonically examined using 45o angle beam techniques applied in two (2) directions perpendicular to the weld axis and 30 angle beam /1s (45 for steagCRD and AP nozzle piece welds only) in two (2) directions parallel with weld axis and on both sides of the weld where part geometry and access permit.
5.2.4 Straight beam techniques shall be applied, where part geometry permits, to all parent material through which the angle beams will pass during angle beam examinations. Indications detected are to be recorded in accordance with Section 10.1.1 of this procedure, except in areas where no back echo can be obtained. Indications detected shall be recorded and data used during evaluation of angle beam examination results.
5.2.5 Other beam angles or longitudinal waves may be used as deter-mined necessary: i.e. for evaluation of reflectors,to compen-sate for geometric constraints, etc. All information shall be recorded on the data sheets.
5.2.6 in addition, straight beam techniques shall be applied to the weld and required volume where part geometry permits. Indica-tions shall be recorded in accordance with Section 10.1.2 of this procedure. This shall include straight beam examination of parent material when no back echo is obtainable.
5.2.7 Where the examination surface, geometry, or other conditions (weld, contour, access, etc.) do not permit a meaningful ultrasonic examination to be performed, the examiner shall record the area of non-examination and the particular inter-fering condition in the space provided on the Weld Scan Data Sheet. In addition, he shall make a sketch of the weld and ,
adjacent pipe and fitting conditions on a separate sheet of CD.
paper and attach to the Calibration Data Sheet. (See Figure 11)
Photos will be taken when possible and incorporated as part of the report.
5.2.8 All examination weld / areas shall be entered in the space provided on the Calibration Data Sheet. If there are no recorda bl'e indications, it shall be so recorded.
5.2.9 Coverage for the welds specified in this procedure is shown in Figures 1 through 6.
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PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WEL_D_S PAGE 7 0F 32 5.3 Liquid Couplant 5.3.1 The ultrasonic couplant shall be suitable for use on nuclear plant materials and be certified not to exceed 50 ppm halogen b and 200 ppm sulfur.
5.3.2 The couplant shall be supplied in clean containers of sufficient quantity to perform the examination.
5.3.3 The couplant shall be applied manually with a brush or other suitable device.
5.3.4 Where required, the examiner shall be responsible for removing couplant from the examination surface at the conclusion of the examination.
5.4 Surface Preparation All examination surfaces should be cleaned and free of dirt, weld spatter, etc., or any 'other condition which would interfere with the examination or impair proper transmission of the sound beam.
5.5 Weld identification Each weld shall be located and identified per appropriate weld maps in the Program Plan Book.
5.6 Datum Point 5.6.1 The examiner shall verify that there has been marked a reference datum point on each weld from which all examination data and reported indications shall be referenced.
5.6.2 Datum points shall be marked by the use of low stress stamps or vibratooling and shall not be deeper than 1/32".
5.6.3 The datum point for all safeend/ transition piece welds in horizontal lines shall be located on the top of the pipe at weld centerline.
5.6.4 Closure Head nozzle to flange weld datum points shall be on the weld centerline at Closure Head 0 .
N 5.6.5 Each weld datum point, along with respcctive weld reference points and divisions, shall be shown on each examination report.
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PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 8 0F 32 6.0 EQUIPMENT REQUIREMENTS 6.1 Examination Contractor's Equipment The following test equipment or its equivalent shall be provided by the Examination Contractor for examination of welds specified in this procedure:
(1) Pulse echo ultrasonic instrument (in compliance wi th Ref. 2.1 (1)) .
(2) Wedges ,45 and 30 -
1 (3) Search Units, 0 ; 1/4" - 1" dia., 2.25MHz (4) Search Units, 2.25 MHz angle beam of a suitable size (5) Couplant (6) Camera (7) Thermometer 6.2 Plant Owner's Equipment The Plant Owner or his Agent shall provide the following service facilities and equipment as required:
(1) Scaffolding (2) Water, Air and Electricity (3) Temporary Lighting (4) Crane or Lifting Devices (5) C;iibration Standard No. STEAM (6) Calibration Standard No. JPl (7) Calibration Standard No. CRD (8) Calibration Standard No. AP (9) Calibration Standard No. VENT (10) Test Surface Preparation (cleaning and finishing)
(11) Drawings of Each Examination Area (12) Post-Examination Cleanup of Test Area n1 a.u~us T1 NUCLEAR ENERGY SERVICES. INC. - - -
PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 9 0F 32 7.0 CAllBRATION REQUIREMENTS 7.1 Calibration Standards 7.1.1 The calibration standards designated in 6.2.l(5) through (9) shall be used for basic instrument calibration and for establishing reference sensitivity levels for examination of the piping welds specified in this procedure. Figures 1 through 8 provide a cross-reference between the welds to be examined and the applicable standard.
7.1.2 The appropriate calibration standard corresponding to each respective weld shall be recorded on each Calibration Data Sheet. Figure 11 is an example of the Calibration Data Sheet to be used with this procedure.
7.1.3 Calibration Data Sheets shall be numbered 475-1, 475-2, 475-3, etc., at the time of calibration a~nd shall be signed by the examiner (s) upon completion.
7.1.4 Calibration procedures shall be performed using the 0.D.
surface of the calibration standard.
7.l.5 The temperature of the calibration standard shall be within 25 F of the part weld temperature. Calibration standard and component temperature shall be recorded on the Calibra-tion Data Sheet.
7.2 Reference Sensitivity Level 7.2.1 The reference sensitivity level shall be the distance-amplitude curve initially obtained directly from the calibra-tion standard and shall be the sensitivity level used for evaluating and recording all indications.
7.2.2 During actual weld scanning, the reference sensitivity level shall be increased at least 2X (6dB).
7.3 Times of Calibration 7.3.1 Basic instrument calibration shall be performed using the appropriate calibration standard, search units and instru-mentation immediately prior to the examination of the welds specified in this procedure.
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PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 10 0F 32 7.3.2 Instrument vertical linearity checks shall be performed at the beginning of each day of examination in accordance with the technique in the procedure reference in para. 2.1(4) using an angle beam search unit ,
applied to a code calibration standard. (11 7.3.3 Examination system calibration checks shall be performed at least at the beginning and at the completion of each four (4) hour period of examination and/or at the change of Levelli examination personnel, equipment, search units, coupler shoes, etc., ,
and at the completion of the examination of each similar series of <L welds in accordance with Sections 8.2 and 8.4 of this procedure.
7.4 Calibration Response 7.4.1 Calibration response shall be checked at the primary reference sensitivity level.
7.4.2 Signal response obtained during calibration check shall be within plus or minus 20% of that established during basic instrument calibration.
7.4.3 If any point on the Distance Amplitude Correction (DAC) curve is below the 20% limit, the examiner shall:
(1) Mark all weld data sheets since previous calibration " void".
(2) Recalibrate examination system.
(3) Re-examine voided areas.
7.4.4 If any point on the DAC curve is above the 20% limit, the examiner shall:
(1) Recalibrate examination system.
(2) Re-evaluate $11 indications recorded since the previous calibration at the corrected sensitivity level.
7.4.5 If any point on the DAC curve has moved horizontally more than 5% of the sweep line from its original settings, the examiner shall-(1) Correct the sweep calibration and note it on the Calibration Data Sheet.
(2) Void any data sheets made since the previous calibration which have recorded indica t ions and re-examine those areas.
O20.09 NUCLEAR ENERGY SERVICES. INC.
PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE I1 0F 32 8.0 EXAMINATION SYSTEM CAllBRATION 8.1 Straight Beam Calibration Straight beam calibration shall be performed as follows and as shown in Figure 9 for STEAM, VENT, AP and Figure 10 for CRD and JPl .
(1) . Adjust the instrument sweep controls so that tne examination area is displayed on the CRT screen.
Mark the horizontal screen positions selected
.for the hole or holes directly on the CRT screen and on the chart on the Calibration. Data Sheet.
(2) Position search unit to obtain maximum response from the side drilled (1/4T if T y l" or 1/2T 'I f T <1") calibration hole. Adjust sensitivity control to provide a signal amplituce of 80% of Full Screen Height (FSH) and mark location and amplitude on CRT screen.
(3) This is the primary reference sensitivity. Re-cord all sensitivity control settings on the appropriate Calibration Data Sheet.
(4) This completes calibration for thicknesses of under one (1) inch. (No DAC is necessary for weld thicknesses under one (1) inch).
NOTE: In bi-metallic calibration blocks (CRD and JPI) the gain setting shall be checked against the equivalent response from the weld hole (.L or =).
If the gain setting is different, it shall be so recorded and used as the primary reference response.
The difference in gain settings will establish a gain correction factor to be applied when evaluating and recording indication found during the examination.
(5) For weld thikknesses one (1) inch and greater a distance amplitude correction (DAC) curve shall be established as follows and as shown in Figures 9 and 10.
(a) Without changing the sensitivity obtained in (2) above, position the search unit for maximum response from the 1/2T and 3/4T holes and mark amplitudes on the CRT screen.
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PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 12 0F 32 (b) If the instrument is equipped with an electronic DAC device, the primary reference response shall be equalized at 80% of FSH over the distance range to be employed in the examination.
(c) Plot a DAC curve by connecting the signal response positions with a continuous line extending over the full examination range.
(6) Record all data and instrument setting on the Calibration Data Sheet, and sign and date upon completion.
(7) Repeat steps (1) through (6) for each different weld thickness just prior to examination.
8.2 Straight Beam Calibration Check Straight beam calibration check as required by Section 7.3.3 shall be performed as follows:
(1) Adjust the sensitivity control settings to those recorded for the calibrated reference sensitivity.
See Section 8.l(2).
(2) Reposition search unit at each respective test hole and observe maximum signai response amplitudes.
(3) See Section 7.4 for signal response requirements during calibration check.
8.3 Angle Beam Calibration Angle beam calibration shall be performed as follows and as shown in Figure 9 for STEAM, VENT, AP,and Figure 10 for CRD and JPl.
(1) Adjust thejnstrumentsweepcontrolssothat the examination area is displayed on the CRT screen.
Mark the horizontal screen positions selected for the hole or holes directly on the CRT screen and on the chart on the Calibration Data Sheet.
(2) Position search unit to obtain maximum response from the calibration hole (3/4T if T 3 1" or 1-1/2T if T < 1").
Adjust sensitivity control to provide a signal amplitude of 80% of FSH and mark location and amplitude on CRT screen.
Note: Calibration shall be performed for both axial and circumferential scans using appropriate holes,
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NUCLE AR 'JNERGY $ERVICES. INC.
PROCEDURE NO. 80A0475 GUBJECT: MANUAL SAFEEND WELDS PAGE 13 0F 32 (3) This is the primary reference sensitivity. Record all sensitivity control settings on the appropriate Calibration Data Shect.
(4) DAC curves for angle beam examinations shall be established as follows and as shown in Figures 9 and 10:
Weld Thickness Less than One (1) Inch (a) Position the search unit for maximum response f rom the calibration hole at the 1-1/2T position. Adjust the instrument sensitivity controls to provide a signal amplitude of 60% of FSH and mark location and ampiitude on the CRT screen. (See 8.3 (2)) .
(b) Without changing sensitivity, position the search unit for maximum responses from the calibration hole at 1/2T, 2-1/2T and 3-1/2T positions respectively and mark location and amplitudes on the CRT screen.
NOTE: Due to the high attenuation of the stainless steel /
inconel material or stainless steel cladding, it may be necessary to divide calibration into two zones. Use an additional Calibration Data Sheet to record this information.
(c) If the instrument is equipped with an electronic DAC device, the primary reference response shall be equalized at 80% of FSH over the distance range to be employed in the examination.
(d) Plot a DAC curve by connecting the signal response positions with a continuous Iine extending over thg full examination range.
NOTE: In bi-metallic calibration blocks (CRD and JPI) the gain setting shall be checked against the equivalent response from the weld hole (.L or =). If the gain setting is different, it shali be so recorded and used as the primary reference esponse. The difference
'in gain settings will establish a gain correction factor to be applied when evaluating and recording indication found during the examination.
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FROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 14 0F 32 (e) Note position and amplitude of ID and OD notch responses through 3T calibration range, (1D at IT and 3T, OD at 2T).
Weld Thickness One (1) Inch and Greater (a) Position the search unit for maximum response from the calibration hole at the 3/4T position.
Adjust the instrument sensitivity controls to provide a signal amplitude of 80% of FSH and mark location and amplitude on the CRT screen.
(See 8.3 (2)) .
(b) Without changing sensitivity, position the search unit for maximum responses from the calibration hole at the 1/4T, 1-1/4T and 1-3/4T positions respectively and mark location and cnplitudes on the CRT screen.
(c) If the instrument is equipped with an electronic DAC device, the primary reference response shall be equalized at 80% of FSH over the distance range to be employed in the examination.
(d) Plot a DAC curve by connecting the signal response positions with a continuous line extending over the full examination range.
(e) Note position and amplitude of ID and OD notch responses through 2T calibration range, (ID at 1T, OD at 2T).
(5) Record all data and instrument settings on the Calibration Data Sheet, and sign upon completion.
(6) Repeat steps (1) through (5) for each different weld thickness just prior to examination.
j 8.4 , Angle Beam Calibration Check Angle beam calibration check as required by Section 7.3.3 shall be performed as follows:
(1) Adjust the sensitivity control settings to those recorded for the calibrated reference sensitivity.
(See Section 8.3 (2)).
(2) Reposition search unit at each respective test hole and observe signal response amplitudes.
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PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 15 0F 32 (3) See Section 7.4 for signal response requirements during calibration check.
9.0 EXAMINATION PROCEDURES 9.1 Straight Beam Examination of Base Material for Laminations 9.1.1 Straight beam examination of all base material through which the angle beams will pass during angle beam examination shall be performed at a sensitivity level which gives a minimum back reflection signal amplitude of 80% of FSH.
9.1.2 A rectilinear scan pattern shall be used allowing a minimum of 25% overlap of the transducer element width (diameter) for each scan pass.
9.1.3 See Table 1 and Figures 1 throu6h 6 for examination summary and scan path distances. Refer to the Preservice inspection Program Plan for detailed weld locations and iden t i f i ca t ions .
9.1.4 Continue scanning sequences until all base material has been examined. Examination shall not be considered complete until all recordable indications have been evaluated per Section 10.1.1.
9.2 Straight and Angle Beam Examination 9.2.1 Straight beam and angle beam examination of the weld and required volume zone shall be performed at a minimum scanning sensitivity level of 2X (6dB) greater than the calibrated reference sensitivity level.
9.2.2 A rectilinear scan pattern shall be used allowing a minimum of 25% overlap of the transducer element width (diameter) for each scan pass.
9.2.3 See Table 1 and Figures I through 6 for examination summary and scan path diptances. Refer to the Preservice Inspection Program Plan for detailed weld locations and iden t i f i ca t i on s .
9.2.4 Continue scanning sequences until all welds have been examined.
Examination shall not be considered complete until all recordable indications have been evaluated per Section 10.1.2.
10.0 EVALUATION CRITERIA 10.1 Recording of Indications 10.1.1 For straight beam examinations of base metal for laminations, all areas giving indications equal to or greater than the remain-ing back reflection shall be recorded on the appropriate data sheet prior to angle beam examination of the weld and required volume.
31b EM' NUCLEAR ENERGV SERVICES. INC.
PROCEDURE N0. 80A047F
SUBJECT:
MANUAL SAFEEND WELDS PAGE 16 0F 32 (1) Each recorded area shall be identified as to distance from surface, length and position relative to the weld datum point.
(2) Recorded data shall be taken on each parallel scan pass at increments not to exceed that permitted by the 25% overlap of transducer element diameter (width).
10.1.2 For straight beam and angle beam examinations of weld and re-quired volume, all Indications showing a signal amplitude response equal to or greater than 50% of the reference response shall be recorded on the appropriate data sheet at the time of weld examination and prior to removino the equipment.
(1) Each recorded indication shall be identified as to depth (as percent of thickness), distance from surface, length, signal amplitude and location relative to the weld datum point.
(2) Recorded data shall be taken on each parallel scan pass at increments not to exceed that permitted by the 25% overlap of transducer element diameter (width).
10.1.3 Indications from all welds shall be reported in inches forward (towards the vessel or closure head) or backward (away from the vessel or closure head) from the weld centerline and in inches CW or CCW from the weld datum point when looking at the vessel or the top of the closure head.
10.2 Evaluation of Indications 10.2.1 Evaluation of all indications shall be made at the reference sensitivity and in accordance with the requirements of the ASME Boiler and Pressure Vessel Code,Section XI,15-300.
All evaluations shall be performed by a Level ll or Level lit examiner.
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10.2.2 Results of this evaluation shall be reported to the Plant Owner or his Agent in accordance with the requirements of the ASME Boiler and Pressure Vessel Code,Section XI,15-600.
Disposition of evaluation results shall be made in accordance with the Owner's Plant Procedures, 11.0 EXAMINATION RECORDS 11.1 Certification of Records The Examiner shall complete and sign all data sheets immediately upon the completion of each weld examination. The data sheets may be reviewed by the authorized Code Inspector.
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PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 17 0F 32 11.2 Filing of Records The examiner shall be responsibic for submitting to the Plant Owner, or his Agent, a completely documented set of examination records including certification of personnel qualifications with a current eye test report in accordance with SNT-TC-1A.
11.3 Procedure Corrections and Additions 11.3.1 All procedure corrections and/or additions required during the preservice examinations shall be made in accordance with requirements of NES QA Program Plan #.NES 80A0448.
11.3.2 The examiner shall contact the LILC0 representative on site to initiate all changes. AlI changes shall be documented in the record of revisions section of this procedure.
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PROCEDURE NO. 80A0475
SUBJECT:
MANUAL EEND WELDS PAGE 18 0F ."~
LEGEND i Perpendicular to Weld
= Parallel to Weld
- Base Material WRV Weld and Required Volume As Fa r As G eome t ry _._
Permits W + 6" 2" W 2 " __
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\Carbon Steel 21" ID Transition Piece Carbon Steel A-508 CL 1 N zzle A-508 CL I N
24-9/16" OD Figure 1 - Ultrasonic Examination Procedures for Main Steam (N3) Nozzle toTransitionPieceWelds(Cal. Block" STEAM"]
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PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 19 0F 32 LEGEND 1 Perpendicular to Weld Calibrated _
= Parallel to Weld On SS Side of
- Base Material h WRV Weld and Required Volume = Calibrated on cladded CS side of "JPl" W + 3" W + 3" -
Stainless Steel Safeend A-182 TP 1" W 1" 304 o
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Figure 2 - Ultrasonic Examination Procedures for Jet Pump Instrumentation (N8)
Nozzle to Safeend Welds [ Cal. Block "JPl" ]
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PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 20 0F 32 LEGEND
.L Perpendicular to Weld
= Parallel to Weld
- Base Material
, Calibrated on Cladded CS Side WRV Weld and Required Volume of "CRD" Calib rated On inconel Side of "CRD" W + 3" inconel Cap W + 3" 1" .W 1" l
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45 .L 75" 0'* O WRV o 0
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3-7/8" ID Nozzle A-508 CL 2 5-3/8" OD N
Figure 3 - Ultrasonic Examination Procedures for Control Rod Drive (N9) Nozzle to Cap Weld ( Cal . Block "CRD"]
3Jb5.kb o NUCLEAR ENERGY SERVICES.INC e
PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 21 0F 32 LEGEND 1 Perpendicular to Weld
= Parallel to Weld
- Base Material
} WRV Weld and Required Volume Vessel Wall N
W + 1" 11 4 gtt
_1/21! W. 1/2'1
.28" l
/[0'o WRV b Ib ^"
45 1
/0o* 00 WRV /
J. \ 45 = //45 - /
Stainless Steel inconel Safeend A-182 TP 304 Nozzle 1-15/16 ID 2.5" OD l
Figure 4 - Ultrasonic txamination Procedures for Pressure Differential (N10) Nozzle to Safeend Weld
[ Cal . Block " AP" ]
Olo;;r0 o NUCLEAR ENERGY SERVICES lNC
PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 22 0F 32 LEGEND 1 Perpendicular to Weld
= Parallel to Weld
- Base Material WRV Weld and Required Volume
]
Carbon Steel Flange A-508 CL 2
\
l : N t
l 3 0 JRV 7 '/ 30
=
Examine As
/ 5 /
Far As Geometry /
Permits 5 J.'
RV 30 =
d 1.2R"- -
3-11/16 ID 6-1/4" OD
/
/ x
\ /
Closure Head N # "
A-508 CL 2 Figure 5 - Ultrasonic Examination Procedures for Closure Head Vent (N7)
Nozzle to Flange Weld [ Cal . Block " VENT" ]
fj[o l) -
~ cu.. ,~ .c se - es,~c
PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 23_ 0F 32 LEGEND 1 Perpendicular to Weld
= Parallel to Weld
- Base Material
/ WRV Weld and Required Volume Flange A-508 CL 2 l l /'
/
! l 0 3 WRV
/ 30 0 =
/ '
Examine As Far 5/
y As Geometry Permits RV
.30 =
A
/ 1.69"- . 5-5/8" ID 9" OD I
Closure Head #
\
p Nozzle A-508 CL2 Figure 6 - Ultrasonic Examination Procedures for Closure Head instrumentation (N6) Nozzle to Flange Welds [ Cal . Block " VENT" )
.D 4} 'O u d ? **
O
? NUCLE AR ENERGY SERVICES.INC
I PROCEDURE NO. 80A0475~
SUBJECT:
MANUAL SAFEEND WELDS PAGE 24 0F 32 Exaraination Surface
/
o c::: I =a/
- = o ,O TI C'
[-s
- c==:n
/ O
- i o c:= ='
?
VENT ap Examination Surface Examination Surfac l'. ' /T n T 6' ^ Qh 0 b) f) lj STEAM l
Cal. Block No. Block Hole Hole Notch T OD ID ,1/4T 1/2T 3/4T Dia. Depth Depth b STEAM l.78" - -
.445" .89" 1.335' 1/8" 3.0" 2%T VENT 1.30" 6.25" 3.25" 375" 75" 1.125' 3/32" 1.5" 2%T AP .28" 2.5" 1.94" .070" .140" .210" 3/32" 1.5" 10%T Figure 7 - Ul trasonic Calibration Blocks " STEAM", " VENT", and " AP" ij,hSN,-n UU O
NUCLEAR ENERGY SERVICES INC.
PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 25 0F 32
's Examination Surface T g, g .,
5/16" SS Cladding _
O O :o Side 1 Side 2 Cal. Block Block Hole Hole Notch Side 1 Side 2 No. T OD ID 1/2T Dia. Depth Depth MAT. MAT.
\
C5 + 55 CRD 75" 5-3/8' 3-7/8' 375" 3/32" 1.5" 10%T Clad. Inconel n CS + SS JPI .81" 5-7/16 3-13{6 .405" 3/32" 1.5" 10%T Clad. SS Figure 8 - Ultrasonic Calibration Blocks "CRD" and "JPl" 31'oi[5'b a
> NUCLEAR ENERGY SERvlCES. INC.
PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 26 0F 32 1
, z ..~. R , .u . ..a . t s,~ u
. -----'s t i af Sov. u *va x Si t P' 3
f
_t A 2 3
., 1 l l \x N 4 V -( >:';'x.' .. '~ i.
l Ij s
M ll ll fl ton mcus.tss s iwH on ttis p p 2
3 "*^a RUER W EAE N E 1 23 4 5 6 l f l_ i ----- se i ar s'ow or rua. .Ccr t I 6
. /
l1 I' ll m Teca<utss cvta t iscs t! f, H [ l jr jT fr ijr 4T 1}r SEARCH UNIT LOCATIONS f, DAC CURVES FOR ANGLE BEAM CAllBRATION E
r *n* *a'r' : E e e .xt h [, _ _ _ _ _s' ',.' E *E "" s*c ="m "____
i jr "YE '/ T
} ;
7^
3 h ;
T r ,
o n 3
i x
'e il SEARCH UNIT LOCATIONS F DAC CURVE FOR {T jT jT STRAIGHT BEAM CAllBRATION.
NOTE: For straight beam calibration on Welds under 1" thick, use 1/2T hole only, no DAC required.
Step 1 - Adjust sweep controls so that the entire examination are is displayed on CRT screen.
Step 2 - Adjust sensitNity to provide 80% FSH indication from hole giving maximum response. Mark position on screen.
Step 3 - Position search unit for maximum response f rom remaining holes. Mark position on screen.
Step 4 - Plot DAC by connecting points marked on screen with line extended to cover entire examination range.
Step 5 - Record all sweep and sensitivity control settings on respective data sheets.
Step 6 - Position search unit for maximum responses from the surface notches and "X" mark screen and'dati sheet to indicate amplitude.
Figure 9 - Reference Sensitivity and DAC Calibration Procedures for Ultrasonic Examination of Welds. Using Cal. Blocks " STEAM", " VENT" and "dP".
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- s. % A' O
i .
NuCL ear (NERGV SERV'CES t%C E1
PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 27 0F 32 Gain Correction Weld Hole 1
2 Po*ua9f RtitSt j ---- so a r so-~ u w'<f:usen 5 2 m m m I
m 2
n n n 3 g . R! 3PCCE I /
X 4
\ ,
. I x ~
re e
s I.i n II Il j
.'l Cladded 3 N fl H SS Or 3jr inconel CS QT lit 2ir Search Unit Locations and DAC Curves For Angle Beam Calibration Step 1 - For straight beam calibration use 1/2T hole only with 80% FSH as primary reference response. No DAC necessary.
Step 2 - Adjust sweep controls so that the entire examination area is displayed on CRT screen.
Step 3 - Adjust sensitivity to provide 80% FSH indication from hole giving maximum response. Mark position on screen.
Step 4 - Position search unit for maximum response from remaining holes. Mark position on screen. Divide into two zones, if high attenuation makes it necessary.
Step 5 - Plot DAC by connecting points marked on screen with line extended to cover entire examination range. Check gain setting against equivalent response from the weld (gain correction) hole.
Step 6 - Record all sweep and sensitivity control settings on respective data sheets.
Step 7 - Position segrch unit for maximum response from the surface notches and "X" mark screen and data sheet to indicate amplitude.
Figure 10 - Reference Sensitivity and DAC Calibration Procedures for Ultrasonic Examination of Welds using Cal. Blocks "CRD" and "JPl".
g., , .., r: c s) y (? .ta. s PJ b '=
>#UCLEAR ENERGY SERVtCESu l%C
PAGE 28 0F 32 Plant / Unit Data Sheet No.
Comp / System CALIBRATION DATA SHEET Procedure No.
Subject Rev/ Change No.
INSTRUMENT SETTINGS SEARCH UNIT Calibration Block No.
'ifg/Model No.- Scan Angle: Mode: Surface Serial No. : Fixturing (if any): Block Temp 'F Sweep Length : Style or Type No. :
DEPTH AMPL. ATTEN.
Sweep Delay : Size & Shape : In n:T in. 4 dB Pulse Length / Damping: Frequency *
-' req . : Rep. Rate: Serial No/ Brand :
Filter: Video: Jack: Measured Angle :
DEC/ Gate Switch: Range: Cable Type & Length:
'4 ode Select: Reject: Couplant Brand:
3ain (coarse): (fine)? Couplant Batch:
3;c w. DAC PLOT INSTR. LINZARITY CAL. I 1 2 3 4 5 90 Icplitude aol i
lHigh!La.- lHighl low i 70' 60 ;
' I '
SCAN s. s i . , I l l
1 ; l5 l i 3U 40
- i - ; - l 4 4 l
, , ' O ' i RV l -
, _ l + ,
! O '
co
- 3 t ' ;l
$g i i t i l i l I 7
3 l l ito !?eldj
! b I, ' ' I I I I
'l ,. h , . ! . o I . i ,,! . . . ,l i . . . l . , ,lii,.
4 l l8 !
= to Wey.I O 1 2 3 4 5 6 78 9 10 AMPL. CO:;TRCL LINEARITY Initial l 6 dB fResult EXA'IINATIO:!
PSCORDABLE n;g;c;7;gy CO:02NTS/ REASON FOR 80 -6 l '5ZLD/AREls , INCOMPLETED SCAN (S)
Yes i' No 80 -12 l ,
40 +6 20 +12
\ l CALIBRATION CHECKS TItiE Initial Cal.
Intermediate Intermediate Intermediate Final Cal.
ADDITIONAL SHEETS? (CHECK BOX) EXAMINERS 1 Date Level Continuatiorj Beam Plot 2 Date Level Supplements Non REVIE;7ER O Sj NUCLE AR ENWY, SERV %ES INC, FIGURE 11 CAllBRATION DATA SHEET d^"""
. PAGE 29 of 32 SUPPLEMENT A INDICATION REPORT SHEET
_ _ III --
, STRAIGHT BEAM
.-. . . . _ .- Datum Procedure No.
. O Subject k Weld No.
A X A Page of
-d- __.
b Attached to Cal. l Data Sheet No.
~
,- i Notes :
I f~ Y (1) X-axis increments not to exceed bnr'f allowable scan increments.
D
" (2) End points shall bc :(a) 50% of DAC
[ "
(6db) for WRV Straicht Beam exam y (b) equal to Remaining Back Re-flection (RBR) for base material t
'- y2 ~\. 1 amination exam.
! (3) This column for WRV Straight Beam Section A-A exam only.
(4) This colu.n for base material lam-ination exam onlv.
l , FORWARD BACK INCI- ."O '3) Y 0 !:AX (f) (b) g,) (4)
CATION SIDE OF D X S P 04 g DAc x9por;;7g,DPOINT NO. WELD (in T/3s) (:db) 1 FSH y (g) y (g)
\
COMMENTS EXAMINERS
- 1. Date Level b1DNhb l .
REVIEWER () Date NUCLE AA ENERGY SERV:C ES. lNC.
PAGE 30 0F 32 SUPPLEMENT B Weld k INDICATION REPORT S!!EET I .l. ANGLE BEAM
..p i Procedure No.
--Datum O Subject X
Weld No.
A m A Page of U--- ------ --
Attached to Cal.
I Data Sheet No.
F-- y -- - '
{
Notes.
E (1) X-axis increments not to exceed I k' n .f, allowable scan increments jJ 's N 's . (2) End points shall be 50% of DAC D -
N s f
,2 I _ _. T-L _4 l (3) Data nust be recorded from both t ___.6.__ _ h i sides. If. indication cannot be
- g y1,e found from the opposite side, so W Y2H state.
Section A-A otDE MAXIMUM INDICAT!!N FORWAP.D (f) BACK (b) CALC.
INDI- g,) y D 9 IGX i 3
-% ' ' " . . . O I E gg) L CATIC:; CFt3) X IG.X NO. WELD (in) % DAC ;7/33) , ,
D, ly1(in) D2 in. %T
,g3 Y2 (in) f l d
EXAMINERS O.s O J ?: .
COMMENTS o1 v)<
1 Date Level 2_ Date Level REVIEWER Date O
PAGE 31 Of 32 SUPPLE!4ENT C Datum 0 b '
INDICATION REPORT SHEET
' = ANGLE BEAM A (l) Hx A i Procedure No.
g a,
._ I - g- - ----- Subject l , Weld No.
Y Page of Weld Attached to Cal.
- -" 3 ( Data Sheet No.
N Notes :
(1) Y-axis increments not to exceed b f allowabic scan increments p1 s 9" (2) End points shall be 50% of DAC D 1 \ \
s 's 8 ,
( 6db)
D 23[ ~ I ~~ ~[ ~ "
__ (3) Data must be recorded from both
[ ~ ~ }[ g --- s A_ ~ I
~~ ]4X1 6 sides. If indication cannot be found from the opposite side, so 6
state.
X F 2*
Section A-A D
I'AXI.*O! I!' DICA-~:0:; FCP.EWARD (f) BACK (b) CAIL .
(t) E:'OPOI::7 (2) E:;2 POI!;T III L CATIC:4 CF (3) y MAX 3 g g'.j g f,; . v . .
NO. GLD (in) % DAC (T/Sc}l (ir. ) Di X 3 (in) D3 X, (in) in. %T l
CO:01ENTS EXM!INERS (M 'j'[jyh c
- 1. Date Level
- 2. Date Level REVIEWER Date O
9' NUCt,E AR ENERGY SERvlCES NC M
l PROCEDURE NO. 80A0475
SUBJECT:
MANUAL SAFEEND WELDS PAGE 32 0F 32 TABLE 1 WELD IDENTIFICATION WELD NO. DESCRIPTION REFERENCE BLOCK REFERENCE FIGURE NOTES 14-316A Main Steam Nozzle (N3A STEAM 1, 7 through through D) to transition D piece welds.
10-303A Jet Pump Instr. Nozzle JPl 2, 8 and B (N8A and B) to Safeend Weld 2-303 Control Rod Drive Nozzle CRD 3, 8 (N9) to Cap Weld 6-315 Core Differential Pres- AP 4, 7 sure Nozzle (N10) to Safeend Weld 1-317A Closure Head instr. VENT 6, 7 and B Nozzle (N6A and B) to Flange Weld 3-317 Closure Head Vent Nozzle VENT 5, 7 (N7) to Flange Weld rs ,rs U a .'1'^
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0 NUCLEAR ENERGY SERVICES, INC.
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