ML100321205

ASME Section XI Inservice Inspection Program Relief Request N1-13-PRT-004 - Limited Coverage Examinations Performed in the Third Ten Year Inspection Interval

ML100321205
Person / Time
Site:	North Anna
Issue date:	02/01/2010
From:	Price J Dominion, Virginia Electric & Power Co (VEPCO)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
10-013
Download: ML100321205 (64)

Text

10 CFR 50.55a VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 February 1, 2010 United States Nuclear Regulatory Commission Serial No.10-013 Attention: Document Control Desk NLOS/ETS RO Washington, D.C. 20555 Docket No. 50-338 License No. NPF-4 VIRGINIA ELECTRIC AND POWER COMPANY (DOMINION)

NORTH ANNA POWER STATION UNIT 1 ASME SECTION XIINSERVICE INSPECTION PROGRAM RELIEF REQUEST N1-13-PRT-004 - LIMITED COVERAGE EXAMINATIONS PERFORMED IN THE THIRD TEN YEAR INSPECTION INTERVAL Dominion performed inservice inspection (lSI) examinations at North Anna Power Station Unit 1 during the third ten-year lSI interval to the requirements of the 1989 Edition of ASME Section XI. Certain examination coverage were limited, i.e., less than 90% weld coverage achieved, due to physical interferences that prohibited attaining full weld coverage.

Pursuant to 10 CFR 50.55a(g)(5)(iii), relief is requested from certain requirements of the ASME Section XI Code associated with examinations where only limited weld coverage was obtained. Relief Request N1-13-PRT-004 is included in the attachment to this letter, and provides the basis for this request. The Facility Safety Review Committee has reviewed and approved the relief request.

If you have any questions or require additional information regarding the attached relief request, please contact Mr. Thomas Shaub at (804) 273-2763.

Very truly yours, Ice ident - Nuclear Engineering Attachment Commitments made in this letter: None

Serial No.10-013 Docket No. 50-338 Third Interval lSI Limited Examination Relief Request Page 2 of 2 cc: U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW Suite 23T85 Atlanta, Georgia 30303 Mr. J. E. Reasor, Jr.

Old Dominion Electric Cooperative Innsbrook Corporate Center 4201 Dominion Blvd.

Suite 300 Glen Allen, Virginia 23060 NRC Senior Resident Inspector North Anna Power Station Ms. K. R. Cotton NRC Project Manager U. S. Nuclear Regulatory Commission One White Flint North Mai I Stop 0-8 G9A 11555 Rockville Pike Rockville, Maryland 20852 Dr. V. Sreenivas NRC Project Manager U. S. Nuclear Regulatory Commission One White Flint North Mail Stop 0-8 G9A 11555 Rockville Pike Rockville, Maryland 20852

Serial No.10-013 Docket No. 50-338 Attachment RELIEF REQUEST N1-13-PRT-004 LIMITED COVERAGE EXAMINATIONS Virginia Electric and Power Company (Dominion)

North Anna Power Station Unit 1

Serial No.1 0-013 Docket No. 50-338 NAPS Unit 1 3'd Interval Limited Exams Page 1 of 61 N1-13-PRT-004 UNIT 1 THIRD INTERVAL LIMITED EXAMS CONTENTS 1.0 ASME CODE COMPONENT(S) AFFECTED 4 2.0 APPLICABLE CODE EDITION AND ADDENDA .4 3.0 APPLICABLE CODE REQUIREMENT 4 A1 Lower Shell to Bottom Head Spherical Ring Volumetric Examination 7 4.A1 IMPRACTICALITY OF COMPLIANCE 5.A1 BURDEN CAUSED BY COMPLIANCE 6.A1 PROPOSED ALTERNATIVE AND BASIS FOR USE A2 Bottom Head Spherical Ring to Bottom Head Cap 10 4.A2 IMPRACTICALITY OF COMPLIANCE 5.A2 BURDEN CAUSED BY COMPLIANCE 6.A2 PROPOSED ALTERNATIVE AND BASIS FOR USE A3 Meridionals at 192.5° and 72.5° 13 4.A3 IMPRACTICALITY OF COMPLIANCE 5.A3 BURDEN CAUSED BY COMPLIANCE 6.A3 PROPOSED ALTERNATIVE AND BASIS FOR USE A4 Pressurizer Nozzle- To-Vessel Welds 17 4.A4 IMPRACTICALITY OF COMPLIANCE 5.A4 BURDEN CAUSED BY COMPLIANCE 6.A4 PROPOSED ALTERNATIVE AND BASIS FOR USE A5 Pumps -Integrally Welded Attachments 22 4.A5 IMPRACTICALITY OF COMPLIANCE 5.A5 BURDEN CAUSED BY COMPLIANCE 6.A5 PROPOSED ALTERNATIVE AND BASIS FOR USE B1 Nozzles Without Reinforcing Plate in Vessels> Y2 in. Nominal Thickness, Nozzle-to-Vessel Welds 25 4.B1 IMPRACTICALITY OF COMPLIANCE 5.B1 BURDEN CAUSED BY COMPLIANCE 6.B1 PROPOSED ALTERNATIVE AND BASIS FOR USE B2 Piping - Integrally Welded Attachments 28 4.B2 IMPRACTICALITY OF COMPLIANCE 5.B2 BURDEN CAUSED BY COMPLIANCE 6.B2 PROPOSED ALTERNATIVE AND BASIS FOR USE

Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 2 of 61 B3 Circumferential Piping Welds ~ 3/8 in. Nominal Wall Thickness for Piping> NPS 4 32 4.B3 IMPRACTICALITY OF COMPLIANCE 5.B3 BURDEN CAUSED BY COMPLIANCE 6.B3 PROPOSED ALTERNATIVE AND BASIS FOR USE B4 Circumferential Piping Welds> 1/5 in. Nominal Wall Thickness For Piping ~ NPS 2 and :S NPS 4 40 4.B4 IMPRACTICALITY OF COMPLIANCE 5.B4 BURDEN CAUSED BY COMPLIANCE 6.B4 PROPOSED ALTERNATIVE AND BASIS FOR USE R1 Risk-Informed Piping Welds .43 4.R1 IMPRACTICALITY OF COMPLIANCE 5.R1 BURDEN CAUSED BY COMPLIANCE 6.R1 PROPOSED ALTERNATIVE AND BASIS FOR USE 7.0 DURATION OF PROPOSED ALTERNATIVE 61 8.0 PRECEDENTS 61

9.0 REFERENCES

61 FIGURES Figure Al-l, 11715-WMKS-RC-R-1.1/1-RC-R-1/4 8 Figure A1-2, 11715-WMKS-RC-R-1.1 /1-RC-R-1 /4 9 Figure A2-1, 11715-WMKS-RC-R-1.1/1-RC-R-1/8 11 Figure A2-2, 11715-WMKS-RC-R-1.1/1-RC-R-1/8 12 Figure A3-1, 11715-WMKS-RC-R-1.1/1-RC-R-1/6, 11715-WMKS-RC-R-1.1/1-RC-R-1/7 14 Figure A3-2, 11715-WMKS-RC-R-1.1/1-RC-R-1/6 15 Figure A3-3, 11715-WMKS-RC-R-1.1/1-RC-R-1/7 16 Figure A4-1, 11715-WMKS-RC-E-2/1-RC-E-2/1 0, 11715-WMKS-RC-E-2/1-RC-E-2/11, 11715-WMKS-RC-E-2/1-RC-E-2/12 19 Figure A4-2, 11715-WMKS-RC-E-2/1-RC-E-2/13, 11715-WMKS-RC-E-2/1-RC-E-2/14 20 Figure A5-1, 11715-WMKS-01 03Y/6-SI-133/18H 23 Figure 81-1, 11715-WMKS-SI-TK-2/1-SI-TK-2/3, 11715-WMKS-SI-TK-2/1-SI-TK-2/4 26 Figure 82-1, 11715-WMKS-01 03AF/6-SI-19/26H, 11715-WMKS-01 07C/8-QS-4/34H 29 Figure 83-1, 11715-WMKS-0104A/10-SI-141/4 34 Figure 83-2, 11715-WMKS-01 04A/10-SI-141/5 35 Figure 83-3, 11715-WMKS-0111 AB/6-CH-19/SW-20W 36 Figure 83-4, 11715-WMKS-0111AB/6-CH-19/1 37 Figure 83-5, 11715-WMKS-0111XKl6-SI-169/SW-39 38 Figure 83-6, 11715-WMKS-0113A/14-RH-2/11 39 Figure 84-1, 11715-WMKS-0111 XA/3-CH-11/SW-1W 41 Figure 84-2, 11715-WMKS-0111 XKl3-SI-23/SW-65 42

Serial No.10-013 Docket No. 50-338 NAPS Unit 1 3rd Interval Limited Exams Page 3 of 61 Figure R1-1, 11715-WMKS-0103AD/6-RC-21/18 47 Figure R1-2, 11715-WMKS-0103W/6-RC-20/41 .48 Figure R1-3, 11715-WMKS-01 03W/6-RC-20/42 49 Figure R1-4, 11715-WMKS-0109D/14-RC-10/SW-51 50 Figure R1-5, 11715-WMKS-0109E-1/271/2-RC-3/10 51 Figure R1-6, 11715-WMKS-01 09E-2/27 1/2-RC-3/SW-41 52 Figure R1-7, 11715-WMKS-0109F-1/271/2-RC-6/38 53 Figure R1-8, 11715-WMKS-0109G-1/271/2-RC-9/34 54 Figure R1-9, 11715-WMKS-01 09G-2/27 1/2-RC-9/SW-43 55 Figure R1-10, 11715-WMKS-0111 BB/3-CH-1/19 56 Figure R1-11, 11715-WMKS-RC-E-1B.2/29-RC-4/N-SE29 IN.,

11715-WMKS-RC-E-1 B.2/31-RC-5/N-SE31 IN 57 Figure R1-12, 11715-WMKS-0103K16-SI-131/21 59 Figure R1-13, 11715-WMKS-RC-E-1C.2/31-RC-8/N-SE31 IN 60 TABLES Table 1, Repetitive/Duplicative Reliefs Requested in Accordance with 10 CFR 50.55a(g)(5)(iii), Inservice Inspection Impracticality 5 Table A4-1, 11715-WMKS-RC-E-2/1-RC-E-2/1 0, 11715-WMKS-RC-E-2/1-RC-E-2/11, 11715-WMKS-RC-E-2/1-RC-E-2/12 19 Table A4-2, 11715-WMKS-RC-E-2/1-RC-E-2/13 20 Table A4-3, 11715-WMKS-RC-E-2/1-RC-E-2/14 21 Table A5-1, 11715-WMKS-01 03Y/6-SI-133/18H 24 Table 81-1, 11715-WMKS-SI-TK-2/1-SI-TK-2/3, 11715-WMKS-SI-TK-2/1-SI-TK-2/4 27 Table 82-1, 11715-WMKS-01 03AF/6-SI-19/26H 30 Table 82-2, 11715-WMKS-01 07C/8-QS-4/34H 31 Table 83-1, 11715-WMKS-0104A/10-SI-141/4 34 Table 83-2, 11715-WMKS-0104A/10-SI-141/5 35 Table 83-3, 11715-WMKS-0111AB/6-CH-19/SW-20W 36 Table 83-4, 11715-WMKS-0111 AB/6-CH-19/1 37 Table 83-5, 11715-WMKS-0111XKl6-SI-169/SW-39 38 Table 83-6, 11715-WMKS-0113A/14-RH-2/11 39 Table 84-1, 11715-WMKS-0111 XA/3-CH-11/SW-1W 41 Table 84-2, 11715-WMKS-0111 XKl3-SI-23/SW-65 42 Table R1-1, 11715-WMKS-01 03AD/6-RC-21/18 47 Table R1-2, 11715-WMKS-0103W/6-RC-20/41 48 Table R1-3, 11715-WMKS-01 03W/6-RC-20/42 49 Table R1-4, 11715-WMKS-0109D/14-RC-10/SW-51 50 Table R1-5, 11715-WMKS-0109E-1/27 1/2-RC-3/1 0 51 Table R1-6, 11715-WMKS-01 09E-2/27 1/2-RC-3/SW-41 52 Table R1-7, 11715-WMKS-01 09F-1/27 1/2-RC-6/38 53 Table R1-8, 11715-WMKS-01 09G-1/27 1/2-RC-9/34 54 Table R1-9, 11715-WMKS-0109G-2/27 1/2-RC-9/SW-43 55 Table R1-10, 11715-WMKS-0111 BB/3-CH-1/19 56 Table R1-11, 11715-WMKS-RC-E-1 B.2/29-RC-4/N-SE29 IN 57 Table R1-12, 11715-WMKS-RC-E-1 B.2/31-RC-4/N-SE31 IN 58 Table R1-13, 11715-WMKS-0103K16-SI-131/21 59 Table R1-14, 11715-WMKS-RC-E-1 C.2/31-RC-8/N-SE31 IN 60

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 4 of 61 N1-13-PRT-004 UNIT 1 THIRD INTERVAL LIMITED EXAMS Relief Request in Accordance with 10 CFR 50.55a(g)(5)(iii)

-- Inservice Inspection Impracticality--

1.0 ASME CODE COMPONENT'S) AFFECTED Refer to Table 1, Columns 1 and 2.

2.0 APPLICABLE CODE EDITION AND ADDENDA North Anna Power Station Unit 1 (NAPS 1) applicable Code for the third 1O-year inservice inspection (lSI) interval and the lSI program is in accordance with the 1989 Edition of Section XI with No Addenda (Reference 1). NAPS 1 third interval end date was April 30, 2009.

3.0 APPLICABLE CODE REQUIREMENT Refer to Table 1, Column 3.

Components identified in this request require examination of essentially 100 percent of the weld length. "Essentially 100 percent" as clarified by ASME Code Case N-460, Alternative Examination Coverage for Class 1 and Class 2 Welds, is greater than 90 percent coverage of the examination volume, or surface area, as applicable.

REQUEST 1. ASMECODE 2. COMPONENT 10 NO. 3. APPLICABLE 4. 5. BURDEN 6. PROPOSED 7. DURATION NUMBER COMPONENT CODE IMPRACTICALITY CAUSED BY ALTERNATIVE OF PROPOSED REQUIREMENT OF COMPLIANCE COMPLIANCE AND BASIS ALTERNATIVE A1 LowerShell to Bottom Exam Categorj' B-A, See Paragraph4 A 1 See Paragraph 5 A1 See Paragraph 6/11 See Paragraph 7 Head Spherical Ring Item No B1 11 11715-VVlvlKS-RC-R-1 1J1-RC-H-1i4 76% Length and Volume Coveraqs A2 Bottom Head Spherical Exam Category B-A, See Paragraph4 A2 See Paragraph 5 ,N See Paragraph 6N See Paragraph 7 Ring to Bottom Head Cap Item No B121 11715-WMKS-RC-R-1 1i1-RC-R-1 f8 75% Length and Volume Coverage A3 h~endiollal at 192 S and E~.aiYI Categor\' B-,A See Para;jr3ph 4 /,*3 SeA P~!-3flf2rh J ,[:,,3 Sf'J? Pala~;H"a~'h F: Al SP,p Prlfrl_~!r::lrh ?

Meridional at 72 5' Item f'Jo B1 22 1171b-II\IMKS-RC-R-1 1i1-RC-R-1r6 61~io Volume Coveraqs 11715-'tlMKS-RC-R-1 1i1-RC-R-1i7 67% Volume Coverage A4 Pressunzer Nozzle-To- Exam Category B-D See Paragraph4 A.4 See Paragraph 5 1>.4 See Paragraph A.4 :See Paragraph 7 Vessel V'Velds Item No 83110 11715-WMKS-RC-E-2i1-RC-E-2i10 78 36% Volume Covsraoe 11715,wMKS-RC-E-2il-RC-E-2il1 73,36% Volume Covsraqe 11715-VVMKS-RC-E-2!1-RC-E-2J12 78 36% Volume Covsrace 11715-WMKS-RC-E-2J1-RC-E-2i13 512% Volume Coveracs 1171b-VVMKS-RC-E-21i1-RC-E-2i14 75% VolumeCove-moe A5 Pumps Integrally Exam Category B-K See Paragraph4 AS See Paragraph 5 AS See Paragraph AS See Paragraph 7 Welded Attachments Item No 81020 11715-WMKS-0103Yi6-SI-133J18H 87% Surface Coveraos 81 Nozzles VVithout Exam Categor; CoB See Paragraph 4 B1 See Paragraph 5 B1 See Paragraph 6 B1 See Paragraph 7 Reinforcing Plate in Item 1,10 C2 21 z

Vessels> 112 In Hominat Thickness - Nozzle-to-

"U Shell \'Velds en 11715-WMKS-SI-TK-2i1-SI-TK-2--3 36~'o Volume Coveraae C

J 11715-INMKS-SI-TK-2/1-SI-TK-2'4 36% Volume Coveraos  ;::;:

82 Piping - Integrally Welded Exam Category C-C See Paragraph4 82 See Paragraph 5 B2 See Paragraph 6 82 :See Paragraph 7 Attachments Item No C320 1171:5-'NI'JlKS-01 03AF/6-SI-1 gi26H 85 43% Surface Coveraqe 11715-WMKS-0107Ci8-0S-4134H 84 85% Surface

('(,I"'~r~n,

REQUEST 1. ASME CODE 2. COMPONENT 10 NO. 3. APPLICABLE 4. 5. BURDEN 6. PROPOSED 7. DURATION NUMBER COMPONENT CODE IMPRACTICALITY CAUSED BY AL TERNATlVE OF PROPOSED REQUIREMENT OF COMPLIANCE COMPLIANCE AND BASIS AL TERNATlVE B3 Circumferential Piping Exam Calegory C-F-1 See Paragraph 4 B3 See Paragraph 5 B3 See Paragraph 6.B3 See Paragraph 7 VVelds 2 3/8 in Hominal Item [*Jo C511 Wall Thickness for Piplllg

'>> NPS 4 11715-WMKS-010411.-1/10-SI-141/4 50% Volume Coveraqe 11715-W['J1I(S-0104A-1110-SI-141i~ 50% Volume Coveraqe 117150VVMKS-0111AB/6-CH*19/SW-20IN 50% Volume Coveraoe 11715*'NMKS-0111AB/6-CH*19'" 50% Volume Coveraqe 11715-\.VMKS-0111XKi6-SI-169/S\N-39 65 42% Volume Coverage 11715-WMKS-011JA-li14-RH-2/11 50% Volume Coveraue B4 Crrcumfarsntral Plplllg Exam Catsqorv C-F-1 See Paragraph4 B4 See F'aragraph 5 B4( See Paragraph 6 Boll See Paragraph 7

'Nelds ' 115 111 Homina: Item r-Io CS 21

\/\'all Thickness 101 Piping

, I , ,  !

I i z r'lPS 2 and' I*IPS 4 I I Q) 11715-VVMKS-0111XAi3~CH*11/SW-1W 50% volume Coverace '"""

11715-\NMKS-0111XKi3-SI-23/SVV-65 841% Volume C"

( I)

R1 Piping Welds Exam Calegory R-II.

ltern No R1 11 Coveraqe See Paragraph4 R1 See Paragraph 5 R1 See Paragraph G R1 See Paragraph? ....

11715-Wf.,,1KS*0103ADi6-RC-21/18 83.3% Volume Covsraoe 11715-WMKS*0103W/6-RC-20i41 50% Volume Coverage 11715-WMKS-0103VJi6-RC-20/42 83 35% Volume Coverage 11715-WMKS-0109D!14-RC-10iS\V-51 65% Volume Coverage 11715WMKS*0109E-1i271i2-RC-3i10 39% Volume Coverage 11715-WMKS-0109E-2/271/2-RC*3/SW-41 35% Volume Coverage 11715-WMKS-0109F*1 i271i2-RC-6i38 75% Volume Coverage 11715-WMKS-0109G-1i27 1i2-RC-9i34 8 33% Volume Coverage 11715-WMKS-0109G-2/27 1i2-RC-9/SW-43 22% Valurns Coverage z 11715-'NMKS-0 111BBi3-CH-1i 19 50% Volume Coverage

>>"U 11715-WMKS-RC-E-16 2i29-RC-4/N-SE29 Ir*J 80% Volume Coverage en 11715-WMKS-RC-E-162 i31-RC-5ir'i-SE31IN 79% Volume Coverage C

J 11715-WMKS-0103K/6-SI-131i21 48% Volume Coverage  ;:::;:

11715-WMKS-RC-E-1C 2/31-RC-8!lJ-SE31 IN 50% Volume Coverage

Serial No.1 0-013 Docket No. 50-338 NAPS Unit 1 3'd Interval Limited Exams Page 7 of 61 A1. Lower Shell to Bottom Head Spherical Ring Volumetric Examination 4.A1 IMPRACTICALITY OF COMPLIANCE In accordance with 10CFR50.55a(g)(5)(iii), relief is requested from the "essentially 100 percent" volumetric examination coverage requirement for the identified Lower Shell to Bottom Head Spherical Ring weld W04. This requirement is considered impractical due to the configuration of the reactor vessel core support pads.

Ultrasonic examination of weld W04 is limited to 76% coverage due to the core support pads at four locations along the path of the weld as shown in Figure A 1-1 and Figure A1-

2. Examination was performed to the extent possible using qualified equipment, and no further coverage is possible with existing technology.

5.A1 BURDEN CAUSED BY COMPLIANCE Destruction of the component would be necessary to perform 100% of the Code required examination as written in the 1989 ASME Section XI Code Edition and is contrary to the intent of the Code.

6.A1 PROPOSED ALTERNATIVE AND BASIS It is proposed that the examinations already completed at the reduced coverage be counted as meeting the Code requirements. The limited volumetric examination and vessel internal visual examination should detect any general patterns of degradation that may occur in the areas covered, therefore providing reasonable assurance of the continued structural integrity of the subject weld.

As part of the examination of the reactor vessel internal surfaces, complete electronic visual examination (EVT) was performed at each of these weld locations as well. Two other examinations were performed on Category B-A, Item B1.11 components in the third lSI inspection interval, welds W02 and W03, obtaining "essentially 100 percent" volumetric examination coverage. Second inservice inspection interval relief was granted for approximately 80% coverage for weld W04 granted May 14, 2001.

Serial No,10-013 Docket No, 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 8 of 61 Figure A1-1 11715-WMKS-RC-R-1.1/1-RC-R-1/4

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WELD WIDTH

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Serial No.10-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 9 of 61 Figure A1-2 11715-WMKS-RC-R-1.1/1-RC-R-1/4 (J

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IATP 7736' MAP/MAN 90' 270' I nu] [90'J 258.97' MTP IBO'

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Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 10 of 61 A2. Bottom Head Spherical Ring to Bottom Head Cap 4.A2 IMPRACTICALITY OF COMPLIANCE In accordance with 10CFR50.55a(g)(5)(iii), relief is requested from the "essentially 100 percent" volumetric examination coverage requirement for the identified Bottom Head Spherical Ring to Bottom Head Cap weld W08. This requirement is considered impractical due to the configuration of the reactor vessel incore instrumentation nozzles.

Ultrasonic examination of weld W08 is limited to 75% coverage due to the incore instrumentation nozzles along the path of the weld as shown in Figure A2-1 and Figure A2-2. Examination was performed to the extent possible using qualified equipment, and no further coverage is possible with existing technology.

5.A2 BURDEN CAUSED BY COMPLIANCE Destruction of the component would be necessary to perform 100% of the Code required examination as written in the 1989 ASME Section XI Code Edition and is contrary to the intent of the Code.

6.A2 PROPOSED ALTERNATIVE AND BASIS It is proposed that the examinations already completed at the reduced coverage be counted as meeting the Code requirements. The limited volumetric examination and vessel internal visual examination should detect any general patterns of degradation that may occur in the areas covered, therefore providing reasonable assurance of the continued structural integrity of the subject weld.

As part of the examination of the reactor vessel internal surfaces, complete electronic visual examination (EVT) was performed at this weld location as well. Second inservice inspection interval limitation relief was granted in request NDE-49 for approximately 80.5% coverage.

Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 11 of 61 Figure A2-1 11715-WMKS-RC-R-1.1/1-RC-R-1/8 f

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Serial No,10-013 Docket No, 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 12 of 61 Figure A2-2 11715-WMKS-RC-R-1.1/1-RC-R-1/8 0'

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Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 13 of 61 A3. Meridionals at 192.5° and 72.5° 4.A3 IMPRACTICALITY OF COMPLIANCE In accordance with 10CFR50.55a(g)(5)(iii), relief is requested from the "essentially 100 percent" volumetric examination coverage requirement for the identified Reactor Vessel Meridional Welds at 192.5° and 72.5°, welds W06 and W07. This requirement is considered impractical due to the configuration of the reactor vessel incore instrumentation nozzles and core lug obstructions.

Ultrasonic examination of weld W06 is limited to 61% coverage and weld W07 is limited to 67% coverage due to the incore instrumentation nozzles and core lug obstructions as shown in Figure A3-1, Figure A3-2, and Figure A3-3. Examination was performed to the extent possible using qualified equipment, and no further coverage is possible with existing technology.

5.A3 BURDEN CAUSED BY COMPLIANCE Destruction of the component would be necessary to perform 100% of the Code required examination as written in the 1989 ASME Section XI Code Edition and is contrary to the intent of the Code.

6.A3 PROPOSED ALTERNATIVE AND BASIS It is proposed that the examinations already completed at the reduced coverage be counted as meeting the Code requirements. The limited volumetric examination and vessel internal visual examination should detect any general patterns of degradation that may occur in the areas covered, therefore providing reasonable assurance of the continued structural integrity of the subject weld.

As part of the examination of the reactor vessel internal surfaces, complete electronic visual examination (EVT) was performed at each of these weld locations as well. One other examination was performed on a Category B-A, Item B1.22 component in the third lSI inspection interval, weld W05, obtaining "essentially 100 percent" volumetric examination coverage.

Serial NO.1 0-013 Docket No. 50-338 NAPS Unit 1 3'd Interval Limited Exams Page 14 of 61 Figure A3-1 11715-WMKS-RC-R-1.1/1-RC-R-1/6 11715-WMKS-RC-R-1.1/1-RC-R-1/7 CORE LUG .L:>> O' ALPHA ANGLE WELD W04__t_~~1r-_36:=~~=--.~-=-~=--::--:::* \=r I

'0" ALPHA mCl' 120.79" I

\ I

.> TOTAL SCAN AREA OF WELDS WOG &: W07 IS LIMITED DUE TO INSTRUMENTATION NOZZLE AND CORE LUG oeSTRUCTIONS l~

I (BMT)

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page150f61 Figure A3-2 11715-WMKS-RC-R-1.1/1-RC-R-1/6 WQ6 192.5'

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Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 16 of 61 Figure A3-3 11715-WMKS-RC-R-1.1/1-RC-R-1/7 W07 72S (287.5']

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Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 17 of 61 A4. Pressurizer Nozzle-To-Vessel Welds 4.A4 IMPRACTICALITY OF COMPLIANCE In accordance with 10CFR50.55a(g)(5)(iii), relief is requested from the "essentially 100 percent" volumetric examination coverage requirement for the identified Pressurizer Nozzle-To-Vessel Welds. This requirement is considered impractical due to the pressurizer to nozzle weld configuration.

Ultrasonic examination of the following pressurizer nozzle-to-vessel welds are limited in coverage due to the pressurizer to nozzle weld configuration as shown in the attached figures. Examination was performed to the extent possible using qualified equipment, and no further coverage is possible with existing technology.

MarklWeld # Line # Scan Coverage % FigurelTable 10 1-RC-E-2 78.36% Fig. A4-1/Tab. A4-1 11 1-RC-E-2 78.36% Fig. A4-1/ Tab. A4-1 12 1-RC-E-2 78.36% Fig. A4-1/ Tab. A4-1 13 1-RC-E-2 51.2% Fig. A4-2/ Tab. A4-2 14 1-RC-E-2 75% Fig. A4-2/ Tab. A4-3 Welds 10, 11, and 12, the safety nozzles, are limited to 78.36% due to nozzle geometry and because the cladding prevents extended V-path. Refer to Figure A4-1 and Table A4-1 for coverage details of the limitations experienced. Second interval relief for welds 10, 11, and 12 exam limitations was granted in Relief Request NOE-20 at 72% coverage.

Weld 13, the relief nozzle, is limited to a single-sided exam due to nozzle configuration.

In the parallel direction, the percent of weld metal examined was 50.8%. In the perpendicular direction from the head side, the percent of weld metal examined was 89.5% with a 45 degree search unit head and 93.3% with a 60 degree search unit head.

In the perpendicular direction from the nozzle side, the percent of weld metal examined was 9.2% with a 45 degree search unit and 5.4% with a 60 degree search unit. The parallel base metal examination obtained 43% coverage. The perpendicular base metal examination obtained 67% coverage with a 45 degree search unit and 77.3% coverage with a 60 degree search unit. The total coverage for weld 13 is limited to 51.2% as shown in Figure A4-2 and Table A4-2. Second interval relief was granted in NOE-38 at 88.4% coverage.

Weld 14, the spray nozzle, is limited to 75% due to the weld location in relation to the nozzle. Second interval relief for weld 14 exam limitations was granted in Relief Request NOE-19 at 75% coverage.

All six of the welds in Category 8-0, Item No. 83.110, have limited examination coverage. Weld 9 is included in relief request NOE-6 with alternative examination requirements (VT-2 each refueling).

Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 18 of 61 5.A4 BURDEN CAUSED BY COMPLIANCE Destruction of the component would be necessary to perform 100% of the Code required examination as written in the 1989 ASME Section XI Code Edition and is contrary to the intent of the Code.

6.A4 PROPOSED ALTERNATIVE AND BASIS It is proposed that the examinations already completed at the reduced coverage be counted as meeting the Code requirements. Alternative components could not be substituted for examination due to the mandatory selection requirements of the Code.

The limited volumetric examination should detect any general patterns of degradation that may occur in the areas covered, therefore providing reasonable assurance of the continued structural integrity of the subject weld.

Serial No.1 0-013 Docket No. 50-338 NAPS Unit 1 3rd Interval Limited Exams Page 190f61 Figure A4-1 11715-WMKS-RC-E-2/1-RC-E-2110 11715-WMKS-RC-E-2/1-RC-E-2/11 11715-WMKS-RC-E-2/1-RC-E-2112 W I U, I I,  ? Ii 1'1 I

~.

/

~ '.. ::" ~:. ..

,~;, '-;. : ~' :, -,- .' i!("

liE (\1)

Table A4-1 11715-WMKS-RC-E-2/1-RC-E-2110 11715-WMKS-RC-E-2/1-RC-E-2111 11715-WMKS-RC-E-2/1-RC-E-2112 Beam Angle Scan Exam Area Scan %

(degrees) Direction 0 v.re!d and Base Meta! 0 86.7 45&60 Base Meta! 2 92.4 45 &60 Base Meta! 5 58.3 45 &60 Base Metal 7&8 86.7 45 \Aleld 2 96.3 45 Weld 5 40 45 W'eld 7&8 100 60 VJeld 2 96.5 60 'Weld 5 26.7 60 Weld 7&8 100 Total Percent 78.36%

Coverage UT Scan Direction Definitions 2- Axial scan, 180 degrees from isometric flow direction (weld count).

5- Axial scan, the same direction as the isometric flow (weld count).

7- Circumferential scan, clockwise rotation when viewing in the direction of isometric flow.

S- Circumferential scan, counterclockwise rotation when viewing in the direction of isometric flow.

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 20 of 61 Figure A4-2 11715-WMKS-RC-E-2/1-RC-E-2113 11715-WMKS-RC-E-2/1-RC-E-2114

/

I I

Nozzle I

Pipe I 1

-- - - - - =::::;::::::::-

Table A4-2 11715-WMKS-RC-E-2/1-RC-E-2113 Beam Angle Scan Exam Area Scan %

(degrees) Direction 0 Base Metal 43 45 &60 Base Meta! Parallel 43 45&60 Base Metal Perpendicular 77.3 0 Weld 50.8 45 VJeld C\N 50.8 45 'Weld CCW 50.8 60 ...~.leld DN 50.8 60 Weld CCW 50.8 45 Weld Head Side 89.5 45 Weld Nozzle Side 9.2 60 Weld Head Side 93.3 60 Weld Nozzle Side 5.4 Total Percent 51.20%

I Coverage

Serial NO.1 0-013 Docket No. 50-338 NAPS Unit 1 3rd Interval Limited Exams Page 21 of 61 Table A4-3 11715-WMKS-RC-E-2/1-RC-E-2114 Beam Scan Angle Exam Area Scan 0/0 Direction (degrees) 0 Weld and Base Metal 0 58.95 45 & 60 Base Metal 2&5 97.64 45 & 60 Base Metal 7&8 65.62 45 Weld 2 98.59 45 Weld 5 40.34 45 Weld 7&8 100 60 Weld 2 98.62 60 Weld 5 16.38 60 Weld 7&8 100 Total Percent 75.13%

Coverage UT Scan Direction Definitions 2- Axial scan, 180 degrees from isometric flow direction (weld count).

5- Axial scan, the same direction as the isometric flow (weld count).

7- Circumferential scan, clockwise rotation when viewing in the direction of isometric flow.

S- Circumferential scan, counterclockwise rotation when viewing in the direction of isometric flow.

Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 22 of 61 AS. Pumps -Integrally Welded Attachments 4.AS IMPRACTICALITY OF COMPLIANCE In accordance with 10CFR50.55a(g)(5)(iii), relief is requested from the "essentially 100 percent" surface examination coverage requirement for the identified Integrally Welded Attachments on pumps. This requirement is considered impractical due to the pipe clamp adjacent to the bottom portion of the attachment.

Surface examination of the integral attachment weld for support RH-1 on 6" Low Head Safety Injection line to B RCS Cold Leg is limited to 87.27% coverage due to inaccessible areas missed because of an adjacent pipe clamp. All similar lugs have the same limitations. Examination was performed to the extent possible.

S.AS BURDEN CAUSED BY COMPLIANCE Disassembly of the component would be necessary to perform 100% of the Code required examination as written in the 1989 ASME Section XI Code Edition and is contrary to the intent of the Code.

6.AS PROPOSED ALTERNATIVE AND BASIS It is proposed that the examinations already completed at the reduced coverage be counted as meeting the Code requirements. The limited surface examination should detect any general patterns of degradation that may occur in the areas covered, therefore providing reasonable assurance of the continued structural integrity of the subject weld.

Eleven components were examined in Category B-K, Item No. B3.110, without limitations, among a total of 114 welds in the category. One of these non-limited examinations was on 11715-WMKS-01 03Y/6-SI-133/19H, which was on the same piping segment. There were no unacceptable indications for any Category B-K components.

Serial No.1 0-013 Docket No. 50-338 NAPS Unit 1 3rd Interval Limited Exams Page 23 of 61 Figure A5-1 11715-WMKS-0103Y/6-SI-133/18H (Top View)

J K Area Not Acces sible /

Due to PIpe Clamp

Serial No.10-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 24 of 61 Table A5-1 11715-WMKS-0103V/6-SI-133/18H Total 3.200 1.700 5.4400 A B 1.000 1.700 1.7000 C D 1.700 3200 5.4400 E F

.50 1.000 0.5000 G

.50 2.000 1.0000 H

50 2.000 1.0000 I

.50 2.200 1.1000 Surface Area Missed J

Due to Pipe Clamp

.50 2.200 1.1000 K

Surface Area Required 172800 Total ASME Cod Area Missed Due to Pipe Clamp 2.2000 Coverage Achiev Surface Area Examined 15.0800 87.27 0

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 25 of 61 B1. Nozzles Without Reinforcing Plate in Vessels> Y2 in. Nominal Thickness, Nozzle-to-Vessel Welds 4.B1 IMPRACTICALITY OF COMPLIANCE In accordance with 10CFR50.55a(g)(5)(iii), relief is requested from the "essentially 100 percent" volumetric examination coverage requirement for the identified Nozzle-to-Vessel welds. This requirement is considered impractical due to single-sided access.

Ultrasonic examination of the identified nozzle-to-vessel welds on the boron injection tank is limited to 36% volume coverage because of single-sided access due to nozzle to shell weld configuration. Examiners were unable to obtain any coverage with the 0 degree scans. Refer to Figure B1-1 and Table B1-1 for coverage details for welds 3 and

4. Examination was performed to the extent possible.

5.B1 BURDEN CAUSED BY COMPLIANCE Destruction of the component would be necessary to perform 100% of the Code required examination as written in the 1989 ASME Section XI Code Edition and is contrary to the intent of the Code.

6.B1 PROPOSED ALTERNATIVE AND BASIS It is proposed that the examinations already completed at the reduced coverage be counted as meeting the Code requirements. The limited volumetric examination should detect any general patterns of degradation that may occur in the areas covered, therefore providing reasonable assurance of the continued structural integrity of the subject weld.

Two other components were examined in Category C-B, Item No. C2.21, in the third lSI inspection interval, obtaining "essentially 100 percent" volumetric examination coverage.

Second interval relief was granted in relief request NDE-48 with 39% coverage for weld 3 and 31% coverage for weld 4.

Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 26 of 61 Figure 81-1 11715-WMKS-SI-TK-2/1-SI-TK-2/3 11715-WM KS-SI-TK-2/1-SI-TK-2/4 Q)

..... o Q)  :::l o "tJ (J)

l "tJ c; (1j (f) ......

C f-.

~ Nozzle I-o o 3 - Downstream

'0

-..J 4 - Upstream U

/

Head /

3 - Upstream 4 - Downstream

/

- --_.~------ ---

---_.----.---- ---0.125"

-~--Nom. Clad Exam Volume Dimensions = H - 0.7" L - 33" W - 1.4"

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 27 of 61 Table 81-1 11715-WMKS-SI-TK-2/1-SI-TK-2/3 11715-WMKS-SI-TK-2/1-SI-TK-2/4 Scan Scan Beam Angle Exam Area Direction Direction Scan %

(degrees)

Mark #3 Mark #4 0 Weld and Base Meta! 0 45 & 60 Base Meta! Downstream Upstream 95.5 45 & 60 Base Meta! Upstream Downstream 100 45 \IVe!d Downstream Upstream 0 45 \JVe!d Upstream Downstream 100 60 Weld Downstream Upstream 0 60 \JVe!d Upstream Downstream 100 45 & 60 Base Meta! (US) CVV &CCVV (US) CW & CeV,! 0 45 & 60 Base r\1eta~ (DS) ew &CeVlli (DS) (IN* & ecw 0 45 \f,ie!d ew & CCW ew & C(lN 0 60 \fie!d ev./ & eew evv &CCVV 0 Total Percent 36.00%

I Coverage

Serial No.1 0-013 Docket No. 50-338 NAPS Unit 1 3rd Interval Limited Exams Page 28 of 61 B2. Piping - Integrally Welded Attachments 4.B2 IMPRACTICALITY OF COMPLIANCE In accordance with 10CFR50.55a(g)(5)(iii), relief is requested from the "essentially 100 percent" surface examination coverage requirement for the identified welded attachments. This requirement is considered impractical due to the pipe clamp adjacent to the bottom portion of the attachment.

Surface examination of the integral attachment weld on the 6" Low Head Safety Injection line to B RCS Hot leg inside Containment is limited to 85.43% coverage due to inaccessible areas missed because of an adjacent pipe clamp. Surface examination of the integral attachment* weld for Support R-72 on the 8" discharge piping from B Quench Spray Pump (1-QS-P-1 B) is limited to 84.85% coverage due to inaccessible areas missed because of an adjacent pipe clamp. All similar lugs have the same limitations.

Examination was performed to the extent possible.

5.B2 BURDEN CAUSED BY COMPLIANCE Disassembly of the component would be necessary to perform 100% of the Code required examination as written in the 1989 ASME Section XI Code Edition and is contrary to the intent of the Code.

6.B2 PROPOSED ALTERNATIVE AND BASIS It is proposed that the examinations already completed at the reduced coverage be counted as meeting the Code requirements. The limited surface examination should detect any general patterns of degradation that may occur in the areas covered, therefore providing reasonable assurance of the continued structural integrity of the subject weld.

A total of eighteen examinations were completed among 171 active components in Category C-C, Item No. C3.20, during the third lSI inspection interval with no unacceptable indications found.

Serial No.10-013 Docket No. 50-338 NAPS Unit 1 3'd Interval Limited Exams Page 29 of 61 Figure 82-1 11715-WMKS-0103AF/6-SI-19/26H 11715-WMKS-0107C/8-QS-4/34H (Top View)

B C E I I

J K Me. Not Accessible /

Due to Pipe Clamp

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 30 of 61 Table 82-1 11715-WMKS-0103AF/6-SI-19/26H Total 2.500 1350 3.3750 A B 1.000 1350 1.3500 C D 1.350 2.500 3.3750 E F

.50 1000 0.5000 G

.50 * .500 0.7500 H

.50 3.000 1.5000 1.500

.50 1.850 0.9250 Surface Area Missed J Due to Pipe Clamp

.50 1.850 0.9250 K

Surface Area Required 12.7000 Total ASME Code Area Missed Due to Pipe Clamp 1.8500 Coverage Achieved Surface Area Examined 10.8500 85.43%

Serial No.1 0-013 Docket No. 50-338 NAPS Unit 1 3rd Interval Limited Exams Page 31 of 61 Table 82-2 11715-WMKS-0107C/8-QS-4/34H Total 2.500 0750 1.8150 A 8 1000 0750 0.7500 C 0 0.750 2.500 1.8150 E F

.50 1.000 0.5000 G

.50 2.000 1.0000 H

.50 2000 1.0000 I

.50 1.250 0.6250 J

..50 1.250 0.6250 Surface Area Missed K Due to Pipe Clamp Surface Area Required 8.2500 Area Missed Due to Pipe Clamp 1.2500 Total ASME Code Coverage Achieved Surface Area Examined 7.0000 84.85%

Serial No.10-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 32 of 61 B3. Circumferential Piping Welds ~ 3/8 in. Nominal Wall Thickness for Piping> NPS 4 4.B3 IMPRACTICALITY OF COMPLIANCE In accordance with 10CFR50.55a(g)(5)(iii), relief is requested from the "essentially 100 percent" volumetric examination coverage requirement for the identified piping welds.

This requirement is considered impractical primarily due to single-sided access for these components.

Ultrasonic examination of the identified piping welds are limited as identified in the following table primarily due to single-sided access. Examination was performed to the extent possible.

MarkiWeld # Line # Scan Coverage % FigurelTable 4 10-81-141 50% Fig. B3-1/Tab. B3-1 5 10-81-141 50% Fig. B3-2/Tab. B3-2 8W-20W 6-CH-19 50% Fig. B3-3/Tab. B3-3 1 6-CH-19 50% Fig. B3-4/Tab. B3-4 8W-39 6"-81-169 65.42% Fig. B3-5/Tab. B3-5 11 14-RH-2 50% Fig. B3-6/Tab. B3-6 Refer to the figures and tables identified for each weld for details of the limitation and the coverage obtained.

5.B3 BURDEN CAUSED BY COMPLIANCE The purpose of nondestructive examination (NDE) is to perform inspections without destroying the component. Any actions necessary to make these welds accessible for NDE exam would be contrary to the intent of the Code.

6.B3 PROPOSED ALTERNATIVE AND BASIS It is proposed that the examinations already completed at the reduced coverage be counted as meeting the Code requirements. The limited volumetric examination should detect any general patterns of degradation that may occur in the areas covered, therefore providing reasonable assurance of the continued structural integrity of the subject weld.

Several of these examinations obtained additional Best Effort Coverage as identified in the figures and tables that follow. Best Effort Coverage refers to the required examination volume past the weld centerline that is examined with an Appendix VIII demonstrated procedure for single sided coverage. Best Effort Coverage is clearly indicated in the attached tables.

Serial No.1 0-013 Docket No. 50-338 NAPS Unit 1 3'd Interval Limited Exams Page 33 of 61 A total of 79 examinations were completed among 848 components in Category C-F-1 ,

Item No. C5.11 , during the third lSI inspection interval. In addition to the six limited exams included in this request, one other limited exam was included in the Unit 1, interval 3, request PRT-2 (Mark # 64, Line # 14-RH-3), with 72% coverage. There were no reportable indications identified.

Serial No.1 0-013 Docket No. 50-338 NAPS Unit 1 3'd Interval Limited Exams Page 34 of 61 Figure 83-1 11715-WMKS-01 04A11 0-SI-141/4 FLO__W '7- Weld Thickness 0.565" Weld Length 34" Weld Width 0.8" Tee Valve C

L Box Dimensions = H - 0.16" L - 1.4" Table 83-1 11715-WMKS-0104A110-SI-141/4 Coverage Summary Angle ReqUired Scans (each scan has a weighting factor of 100 for complete coverage)

UpSt-Ax UpSt-CW UpSt-CCW OnSt-Ax OnSt-CW OnSt-CCW 60 100% 100% 100%

70 75%

Code Coverage Total 50%

Best Effort Coverage (Max 50%) Total 12.50%

Notes:

1) Code Coverage refers to the maximum percentage of the raqutred examination volume that .s effectively examined wtth the qualified examination procedure.

2) Best Effort Coverage refers to the required examination volume past the weld centerline that is examined wtth an Appendix vm demonstrated procedure for single sided coverage.

I

Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 35 of 61 Figure 83-2 11715-WMKS-01 04A11 0-SI-141/5 Weld Thickness 0.466" Weld Length 34" Weld Width 0.55" Valve Pipe Box Dimensions = H - 0.12" L - 1.05" Table 83-2 11715-WMKS-0104A110-SI-141/5 Coverage Summary Angle Required Scans (each scan has a viJeighting factor of 100 for complete coverage)

UpSt-Ax UpSt-CW UpSt-CCW DnSt-Ax DnSt-CW DnSt-CCW 60 100% 100% 100%

70 100%

Code Coverage Total 50%

Best Effort Coverage (Max 50%) Total 16.60%

Notes:

1".I Code Coverage refers to the maximum percentage of the required examination volume that is effectively examined with the qualified examination procedure.

2J Best Effort Coverage refers to the required examination volume past the weld centerline that is examined with an Appendix \1m demonstrated procedure for single sided coverage.

Serial No.1 0-013 Docket No. 50-338 NAPS Unit 1 3'd Interval Limited Exams Page 36 of 61 Figure B3-3 11715-WMKS-0111 AB/6-CH-19/SW-20W FLOW Weld Length 21" Weld Width 0.45" Pipe Box Dimensions = H - 0.09" L - 0.95" Table B3-3 11715-WMKS-0111 AB/6-CH-19/SW-20W Coverage Summary Angle Required Scans (each scan hasa weighting factor of 100 for complete coverage)

UpSt-Ax UpSt-CW UpSt-CCW DnSt-Ax o-se-cw DnSt-CCW 70 100% 100% 100%

70 41%

Code Coverage Total 50%

Best Effort Coverage (Max 50%) Total 7.00%

Notes:

1) Code Coverage refers to the maximum percentage of tine required examination volume that is effectively examined with the qualified examination procedure.

2) Best Effort Coverage refers to the required examination volume past the weld centerline that is examined with an Appendix Viii demonstrated procedure for single sided coverage.

Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 37 of 61 Figure B3-4 11715-WMKS-0111 AB/6-CH-19/1 FLOW Weld Length 20.8""

Weld Width 0.9" Valve Pipe Box Dimensions = H - 0.09" L - 1.4" Table B3-4 11715-WMKS-0111 AB/6-CH-19/1 Coverage Summary Angle ReqUired Scans (each scan has a weighting factor of 100 for complete coverage)

UpSt-Ax UpSt-CW UpSt-CCW DnSt-Ax DnSt-CW DnSt-eCW 70 100'% 100% 100%

70 28%

Code Coverage Total 50%

Best Effort Coverage (Max 50%) Total 4.70%

Notes:

1) Code Coverage refers to the maximum percentage of the required examination volume that is effectively examined with the qualified examination procedure.

2"

T~.

I -..._ _

~:.,!;L.......,...---r----h~_----4-~

Weld Thickness 0.7""

Weld Width 0.85" Exam performed from the Safe End side only due to Nozzle configuration.

Table 83-5 11715-WMKS-0111 XKl6-SI-169/SW-39 Coverage Summary Code Required Coverage:

i Circ, Coverage C\V & CCW 47.0%

I 50" Axial Coverage 75.0%

45" Axial Coverage 92.7%

Procedural Coverage:

Ore. Coverage C\V & CCVV 47.2%

50" Axial Coverage 73.7~'b 45" Axial Coverage 82.n~ib Code Coverage Totall 55.42%

Notes:

1'\J Code Coverage refers tothe maximum percentage of the required examination volume that is effectively examined with the qualifted examination procedure.

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 39 of 61 Figure 83-6 11715-WMKS-0113A114-RH-2/11 Weld Thickness 0.438" Weld Length 44" FLOW Weld Width 1.1"

-~~~l

\, , -----~------

Pipe Box Dimensions = H - 0.15" L - 1.6" Table 83-6 11715-WMKS-0113A114-RH-2/11 Coverage Summary Angle Required Scans (each scan has a weightmg factor of 100 for complete coverage)

UpSt-Ax UpSt-CW UpSt-CCW DnSt-Ax DnSt-CW DnSt-CCW 60 100%

45/60 100% 100%

70 19%

Code Coverage Total 50%

Best Effort Coverage (Max 50%) Total 3.20%

Notes:

1\) Code Coverage refers to the maximum percentage ofthe required examination volume that is effectively' examined vi/ith the qualified examination procedure.

2) Best Effort Coverage refers to the required examination volume past the '.'veld centerline that is examined with an Appendix Vii! demonstrated procedure for single sided coverage.

Serial No.1 0-013 Docket No. 50-338 NAPS Unit 1 3'd Interval Limited Exams Page 40 of 61 B4. Circumferential Piping Welds> 1/5 in. Nominal Wall Thickness for Piping ~ NPS 2 and :5 NPS 4 4.B4 IMPRACTICALITY OF COMPLIANCE In accordance with 10CFR50.55a(g)(5)(iii), relief is requested from the "essentially 100 percent" volumetric examination coverage requirement for the identified piping welds.

This requirement is considered impractical primarily due to single-sided access for these components.

Ultrasonic examination of weld SW-1W is limited to 50% volume coverage because of the tee to pipe configuration and the as-welded stainless weld. Scanning could only be performed on the downstream side in the axial and circumferential directions. An additional 70 degree scan was used for "Best Effort" technology for single side detection of far side effects parallel to the weld and not for coverage.

Ultrasonic examination of weld SW-65 is limited to 84.1% volume coverage because of the upstream elbow and the drain line on the downstream side. Because of the upstream elbow, there was no axial exam for 3.0" of the 11.0" total weld length. Because of the downstream drain line, there was no axial exam for 2.5" of 11.0" total weld length.

Examination was performed to the extent possible.

MarklWeld # Line # Scan Coverage % FigurelTable 8W-1W 3-CH-11 50% Fig. B4-1/Tab. B4-1 8W-65 3-81-23 84.1% Fig. B4-2/Tab. B4-2 5.B4 BURDEN CAUSED BY COMPLIANCE The purpose of nondestructive examination (NDE) is to perform inspections without destroying the component. Any actions necessary to make these welds accessible for NDE exam would be contrary to the intent of the Code.

6.B4 PROPOSED ALTERNATIVE AND BASIS It is proposed that the examinations already completed at the reduced coverage be counted as meeting the Code requirements. The limited volumetric examination should detect any general patterns of degradation that may occur in the areas covered, therefore providing reasonable assurance of the continued structural integrity of the subject weld.

There were thirty two exams performed among 292 active components in Category C-F-1, Item No. C5.21, in the third lSI inspection interval, and all but these two obtained "essentially 100 percent" examination coverage.

Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 41 of 61 Figure 84-1 11715-WMKS-0111 XA/3-CH-11/SW-1 W Weld Thickness 0.430" Weld Length 11.0" Weld Width 0.6" Tee Total Volume is 0.15" and Total Area Scanned is 0.075" Table 84-1 11715-WMKS-0111 XA/3-CH-11/SW-1 W Coverage Summary Angle Required Scans (each scan has a weighting factor of 100 for complete coverage)

UpSt-Ax UpSt-CW UpSt-CCW OnSt-Ax OnSt-CW OnSt-CCW 45/60 100% 100% 100%

70 Code Coverage Total 50%

Best Effort Coverage (Max 50%) Total "'

Notes:

1) Code Coverage refers to the maximum percentage of the required examination volume that is effectively examined with the qualified examination procedure.

2) Best Effort Coverage refers to the required examination volume past the weld centerline that is examined with an Appendix vm demonstrated procedure for single sided coverage. '" No Best Effort Coverage obtained.

Serial NO.1 0-013 Docket No. 50-338 NAPS Unit 1 3 rd Interval Limited Exams Page 42 of 61 Figure 84-2 11715-WMKS-0111 XKl3-SI-23/SW-65 FI Weld Thickness 0.437" Weld Length 11.0" Box Dimensions = H - 0.146" L - 1.15" Weld Width 0.65" Table 84-2 11715-WM KS-0111 XKl3-SI-23/SW-65 Coverage Summary Angle Required Scans (eacn scan nasa weighting factor of lOG for complete coverage}

UpSt-Ax UpSt-CW UpSt-CCW DnSt-Ax DnSt-CW DnSt-CCW 6D 72.8% 10D% 100% 77.3% 77.3% 77.3~;'o 70 17.7%, 14.8%

Code Coverage Total 84.1%

Best Effort Coverage (Max 50%) Total 5.42~!o Notes:

f'J Code Coverage refers to the maximum percentage of the required examination volume that is effectively examined with the qualified examination procedure.

2) Best Effort Coverage refers to the required examination volume past the weld centerline that is examined with an Appendix VI!! demonstrated procedure for single sided coverage.

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 43 of 61 R1. Risk-Informed Piping Welds 4.R1 IMPRACTICALITY OF COMPLIANCE In accordance with 10CFR50.55a(g)(5)(iii), relief is requested from the "essentially 100 percent" volumetric examination coverage requirement for the identified piping welds.

This requirement is considered impractical primarily due to single-sided access for these components.

These welds are governed by the Risk-Informed Inservice Inspection (RI-ISI) Program that was approved by the NRC for North Anna Power Station Unit 1 in their letter dated September 18, 2001. The welds are assigned category R-A, Item R1.11, and require ultrasonic examination. Except for weld 19 on line # 3-CH-1 , each of these welds are located in the Westinghouse Risk Matrix Region 2 (Perdue Model Sample) which allows alternative selections if they exist.

MarklWeld # Line # Scan Coverage % FigurefTable 18 6-RC-~~1 83.3% Fig. 84-1/Tab. 84-1 41 6-RC-20 50% Fig. 84-2/Tab. 84-2 42 6-RC-20 83.35% Fig. 84-1/Tab. 84-1 SW-51 14-RC-10 65% Fig. 84-2/Tab. 84-2 10 27 Y2-RC-3 39% Fig. 84-1/Tab. 84-1 SW-41 27 Y2-RC-3 35% Fig. 84-2/Tab. 84-2 38 27 Y2-RC-6 75% Fig. 84-1/Tab. 84-1 34 27 Y2-RC-9 8.33% Fig. 84-2/Tab. 84-2 SW-43 27 Y2-RC-9 22% Fig. 84-1/Tab. 84-1 19 3-CH-1 50% Fig. 84-2/Tab. 84-2 N-SE29 IN. 29-RC-4 80% Fig. 84-1/Tab. 84-1 N-SE31 IN. 31-RC-5 79% Fig. 84-2/Tab. 84-2 21 6-SI-131 48% Fig. 84-1/Tab. 84-1 N-SE31 IN. 31-RC-8 50% Fig. 84-2/Tab. 84-2 Weld 18 downstream side axial scan is obstructed from examination due to the weld-o-let configuration. Weld 18 is on risk-informed inservice inspection (RI-ISI) segment RC-018 which includes seven welds. Two segment welds were examined, one with complete coverage and weld 18 receiving 83.3% coverage, which provides good representative coverage for the segment.

Weld 41 upstream side examination is limited due to the valve to elbow configuration.

Weld 41 is on RI-ISI segment RC-043 which includes four welds. The segment is located in the Westinghouse Risk Matrix Region 2 (Perdue Model Sample), and the sample size required all welds to be examined. Thermal stratification was postulated and used for the examination criteria. Three of the four examined welds had limited

Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 44 of 61 coverage and are included on this list: weld # 41 with 50% coverage, weld # 42 with 83.35% coverage, and weld # SW-43 with 22% coverage. The one additional weld had complete coverage. Since all of the welds on the segment were selected for examination, there are no acceptable alternatives and the welds were examined to the extent possible.

Weld 42 downstream axial examination is limited due to the coupling configuration on the downstream side. Additional"Best Effort" scans with a 60 degree RL search unit obtained additional coverage of the area without an effective Code scan. Weld 42 is on RI-ISI segment RC-043 which includes four welds. See the discussion for segment RC-043 with weld 41 above.

Weld SW-51 was limited both because of the nozzle configuration on the downstream side and an adjacent weld on the upstream side. Because of the configuration of the exam volume, the exam volume is unequal on each side of the weld centerline. On the nozzle side of the weld, the volume comprises 40% of the exam volume. On the safe-end side of the weld, the balance of the exam volume is 60%. Because of this, each side of the weld coverage is multiplied by the respective percentage to achieve the total percentage value identified in this request. Weld SW-51 is on RI-ISI segment RC-019 which includes twelve welds. Two welds were selected for examination on the segment, one received full examination coverage. In the third period, the weld with limited coverage was overlayed with a PWOL, and future examination will be in accordance with the Augmented Inspection Program.

Weld 10 is a one sided exam from the pipe side (upstream) due to the pipe to valve joint configuration. Also, because the pipe is centrifugally cast stainless steel, no additional actions can be taken to get better UT coverage. Weld 10 is on RI-ISI segment RC-01 0 which includes two welds. The segment is located in the Westinghouse Risk Matrix Region 2 (Perdue Model Sample), the sample size was one (1), no active damage mechanism was postulated and the default thermal fatigue mechanism was used for examination criteria. The other weld in the segment, weld # 37 on line # 27.5"-RC 2501-01, was not examined in the third interval, but was examined in the second inspection interval with only 64% coverage (included in relief request NDE-20). RI-ISI segments RC-010, RC-011, and RC-012 are similar but on different loops. Each of these segments include two welds with a sample size of one (1). Weld 10 received 39%

coverage, weld 38 received 75% coverage (before specific Code requirements for single-sided examinations), and weld 34 received 8.33% coverage. The loop piping is not postulated with an active damage mechanism and is represented with fifteen RI-ISI segments, each requiring at least one examination.

Weld SW-41 is limited on the upstream side of the weld because this is a branch connection. The exam required a best effort exam using a flat RTD 45 degree search unit to obtain maximum Code coverage. Weld SW-41 is the branch weld on RI-ISI segment RC-041. This segment has five welds in the population. The segment is located on Westinghouse Risk Matrix Region 2 (Perdue Model Sample), with the sample size requiring at least three welds be examined. Thermal stratification was postulated and used for the examination criteria. All five welds in the segment were examined, with only weld SW-41 limited to 35% coverage. One of the other welds on the segment with complete coverage provides an acceptable alternative for this limited examination.

Weld 38 is limited due to weld joint configuration (pump to pipe) and the material type.

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 45 of 61 Because the pipe is centrifugally cast stainless steel, no additional actions can be taken to get better UT coverage. The 45° scans included multiple search units to get the coverage obtained, and total coverage includes all the scans. Weld 38 is on RI-ISI segment RC-011 which includes two welds. Discussion of this segment is included with the weld 10 paragraph above. Second interval relief was granted for weld 38 in relief request NDE-47 with 52.5% coverage.

Weld 34 is limited due to the pipe to valve configuration. The 45 degree circumferential scan could not be accomplished due to the transducer wedge contour. No coverage of the area of interest (inner 1/3 volume) could be achieved. The contoured wedges would not permit skewing of the transducers to target the exam area volume. Also, because the pipe is centrifugally cast stainless steel, no additional actions can be taken to get better UT coverage. Weld 34 is on RI-ISI segment RC-012 which includes two welds.

Discussion of this segment is included with the weld 10 paragraph above. The other weld in this segment, weld 33, was examined in the second interval with limited examination coverage.

Weld SW-43 is limited due to the nozzle to cold leg configuration. Because the pipe is centrifugally cast stainless steel, no additional actions can be taken to get better UT coverage. Weld SW-43 is on RI-ISI segment RC-043 which includes four welds. See the discussion for segment RC-043 with weld 41 above.

Weld 19 is limited as a single sided exam due to valve to elbow configuration. Weld 19 is on RI-ISI segment RC-049 which includes four welds, two of which were examined.

Weld 19 received 50% coverage and weld SW-1, added as a result of the limited coverage, received full coverage, which provides good representative coverage for the segment.

Weld N-SE29 IN. on 29-RC-4 is limited due to weld joint configuration and the distance of the examination area from the nozzle to bowl radius. There was no specific dissimilar metal weld procedure at the time of this examination, and coverage calculations would be different later in the interval with updated procedures. This weld was re-examined in N1 R20 using a phased array technique under the augmented program with no reportable indications. This weld in on RI-ISI segment RC-005 which includes three welds, with only this one selected for examination. Second lSI interval relief request NDE-26 was granted for similar coverage.

Weld N-SE31 IN. on 31-RC-5 is limited due to weld joint configuration and the distance of the examination area from the nozzle to bowl radius. There was no specific dissimilar metal weld procedure at the time of this examination, and coverage calculations would be different later in the interval with updated procedures. This weld was re-examined in N1R20 using a phased array technique under the augmented program with no reportable indications. This weld is on RI-ISI segment RC-008 which includes seven welds, with only this one selected for examination. Second lSI interval relief request NDE-26 was granted for similar coverage.

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 46 of 61 Weld 21 is limited due to single sided access because of the tee to valve configuration.

Weld 21 is on RI-ISI segment ECC-020 and is one of seven welds on the segment.

Weld 21 received 48% coverage, and weld 43, added as a result of the limitation, received full coverage, which provides good representative coverage for the segment.

Weld N-SE31 IN. on 31-RC-8 is limited due to the nozzle configuration. This weld is on RI-ISI segment RC-009 which includes seven welds, with only this one selected for examination. Second lSI interval relief request NDE-26 was granted for similar coverage and NDE-47 indicates 78.8% coverage.

5.R1 BURDEN CAUSED BY COMPLIANCE The purpose of nondestructive examination (NDE) is to perform inspections without destroying the component. Any actions necessary to make these welds accessible for NDE exam would be contrary to the intent of the Code. Design modifications would be necessary to provide sufficient access, and imposition of this requirement would cause a considerable burden.

6.R1 PROPOSED ALTERNATIVE AND BASIS It is proposed that the examinations already completed at the reduced coverage be counted as meeting the Code requirements. The limited volumetric examination should detect any general patterns of degradation that may occur in the areas covered, therefore providing reasonable assurance of the continued structural integrity of the subject weld. A portion of each of the subject welds was examined volumetrically, and in most cases a 100% surface examination was performed. In addition, these welds receive a visual examination during the system leakage test. Therefore, any pattern of degradation should be detected by these examinations ensuring reasonable assurance of operational readiness.

Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 47 of 61 Figure R1-1 11715-WMKS-0103AD/6-RC-21/18 FLOW c 45° _

... -.-----/-*-:/~eld Thickness 0.718" Weld-a-let / Weld Length 20.8"

// Weld Width 0.90"

/

/

/ Elbow r-Box Dimensions = H - 0.24" L - 1.9" Table R1-1 11715-WMKS-0103AD/6-RC-21/18 Coverage Summary Angle Required Scans leach scan has a IJ\leighting factor of 100 for complete coverage)

UpSt-Ax UpSt-CW UpSt-eCW DnSt-Ax DnSt-CW DnSt-CCW 45 100% 100% 100% 100% 100%

60 Rl 100%

Code Coverage Total 83.3%

Best Effort Coverage (Max 50%) Total 16.7%

Notes:

1) Code Coverage refers to the maximum percentage of the required examination volume that is effectively examined VJUh the qualified examination procedure.

2j i Best Effort Coverage refers to the required examination volume past the weld centerline that is examined wtth an Appendix vm demonstrated procedure for single sided coverage.

Serial NO.1 0-013 Docket No. 50-338 NAPS Unit 1 3'd Interval Limited Exams Page 48 of 61 Figure R1-2 11715-WMKS-0103W/6-RC-20/41 FLOW Valve Elbow

___ ...- -.1 0.718" Box Dimensions = H - 0.239" L - 1.9" 20.8" 0.90" Table R1-2 11715-WMKS-0103W/6-RC-20/41 Coverage Summary Angle Required Scans (each scan hasa weighttng factor of 100 for complete coverage)

UpSt-Ax UpSt-CW UpSt-CCW DnSt-Ax DnSt-CW DnSt-CCW 45 l00~:to 100~:'6 60 100%

60 RL 100%

! Code Coverage Total 50:1'0 I

I Best Effort Coverage (Max 50%) Total 16.67%

Notes:

I l'I Code Coverage refers 'to the maximum percentage of the required examination volume that is effectively examined with the qualified examination procedure.

2) Best Effort Coverage refers to the required examination volume past the weld centerline that is examined wtth an Appendix VIII demonstrated procedure for single Sided coverage.

Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 49 of 61 Figure R1-3 11715-WMKS-0103W/6-RC-20/42 FLOW et..

r--

16ooR~J

"\ ~ --

Pipe -, ~

Coupling

\

\ I '"""-<,

\ I

' I _...- ....- .-"'..

"~

---

..-.-.l---'Vv eld Thickness 0.718" Box Dimensions = H - 0.239" L - 1.9" Weld Length 20.8" Weld Width 0.90" Table R1-3 11715-WMKS-0103W/6-RC-20/42 Coverage Summary Angle ReqUired Scans (each scan has a weighting factor of 100 for complete coverage)

UpSt-Ax UpSt-CW UpSt-CCW DnSt-Ax o-se-cw DnSt-CCW 45 100% 100% 100% 100%

60 100%

60 Rl 100%

Ii Code Coverage Total 83.35%

I Best Effort Coverage (Max 50%) Total 16.67%

!I Notes:

I";! Code Coverage refers to the maximum percentage of the required examination volume that is effectively examined with the qualified examination procedure.

2\! Best Effort Coverage refers to the required examination volume past the weld centerline that 1S examined wrth an Appendix \/m demonstrated procedure for single sided coverage.

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 50 of 61 Figure R1-4 11715-WM KS-01 09D/14-RC-1 O/SW-51 (jj c

o o (jj "D E Ql e e

'U o W Ql Cll u Ql ....J Ql't e u ---. 2Ql Cll U rJJ_ Ql '::::: Cll U Ql't rJJCll eE o Ql "D (jj

--'t Ql Ql o 1 -e- 0_

.0 (ij "D - ~ I-E (jj "D 0-

~ (jj rn Ql a

I- 4" to Clamp "D

(jj Nozzle 2 Side ~,","r------

Pipe

.......4.--_~ .

FLOW Table R1-4 11715-WMKS-01 09D/14-RC-1 O/SW-51 Beam Angle Scan Exam Area Scan %

(degrees) Direction 45 Nozzte. Buttering & Weld (2 Side) 2 91 45 Nozzle, Buttering & \Neid (2Side) 5 49 45 Nozzle, Buttering & VJeld (2 Side) 7 100 45 Nozzle, Buttering & Weld (2 Side) 8, 100 Total fortine 2Side 340 322% +4= 85 85% x 40% = 34 70 Safe End &We!d (5 Side) 2 0 70 Safe End & Weld ~5 Side} 5 9 70 Safe End & Weld ~5 Side} 7 100 70 Safe End & Weld (5 Side) 8, 100 Total for tine 5 Side 209 209':10 +4 = 52 52% x 60% = 31

2. Side Coverage 34%

5 Side Coverage 31%

Total Percent 65%

Coverage UT Scan Direction Definitions 2- Axial scan, 180 degrees from isometric flow direction (weld count).

5- Axial scan, the same direction as the isometric flow (weld count).

7- Circumferential scan, clockwise rotation when viewing in the direction of isometric flow.

8- Circumferential scan, counterclockwise rotation when viewing in the direction of isometric flow.

Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 51 of 61 Figure R1-5 11715-WMKS-0109E-1/27 1/2-RC-3/10 FLOW Weld Thickness 2.30"

... Weld Length 86" Weld Width 2.375" 45° TRL

\

\ , , ,,

\

I ,,

\

I , ,,

Valve ) ,

I ,,

I

\

I

, ,, Pipe

\ ,,

, I

\ /

'- .., _/

Table R1-5 11715-WMKS-0109E-1/27 1/2-RC-3/10 Coverage Summary Angle Required Scans (each scan has a wetghttng factor of 100 for complete coverage)

UpSt*Ax UpSt-CW UpSt-CCW OnSt-Ax DnSt-CW OnSt-eCW 45 56% 100% 100%

Code Coverage Total 39%

Notes:

I} Code Coverage refers to tine maximum percentage of tine required examination volume that is effecUvely examined wttn the qualified examination procedure.

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 52 of 61 Figure R1-6 11715-WM KS-01 09E-2/27 1/2-RC-3/SW-41 FLOW J

Weld Width 2.25" Nozzle D--

o*

/}------'

(

\.

Table R1-6 11715-WMKS-0109E-2/27 1/2-RC-3/SW-41 Coverage Summary Angle Required Scans (each scan has a weighting factor of 100 for complete coverage)

UpSt-Ax UpSt-CW UpSt-CCW OnSt-Ax DnSt-CW DnSt-CCW 45 83% 28% 28%

Code Coverage Total 35%

Notes:

1) Code Coverage refers to the maximum percentage of tine required examination volume that is effect@vely examined with the qualified examination procedure.

Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 53 of 61 Figure R1-7 11715-WMKS-0109F-1/271/2-RC-6/38 Pump Pipe Weld Length 86" Weld Width 1.7" Table R1-7 11715-WMKS-0109F-1/271/2-RC-6/38 Beam Scan Angle Exam Area Scan 0/0 Direction (degrees) 45 RTD/45RL DnSt-Ax 67 45 RTD/45RL UpSt-Ax 0 45 RTD/45RL DnSt-CW 100 45 RTD/45RL DnSt-CCW 100 60 RTD DnSt-Ax 100 60 RTD UpSt-Ax 0 Total Percent 75%

Coverage

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 54 of 61 Figure R1-8 11715-WMKS-0109G-1/27 1/2-RC-9/34 Table R1-8 11715-WMKS-0109G-1/27 1/2-RC-9/34 Coverage Summary Angle ReqUired Scans (each scan has a weighting factor of 100 for complete coverage)

UpSt-Ax UpSt-CW UpSt-CCW DnSt-Ax DnSt-CW DnSt-CCW 45 Rl 33.33%

Code Coverage Total 8.33%

Notes:

1) Code Coverage refers to the maximum percentage of the required examination volume that is effectively examined vvitn the qualified examination procedure.

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 55 of 61 Figure R1-9 11715-WM KS-0109G-2/27 1/2-RC-9/SW-43 Nozzle Weld Thickness 2.3" Weld Length 27" Weld Width 2.5" "Tl r

o s

I

~ .:

////

Cold Leg

~~

Box Dimensions = H - 0.76" L - 2.25" /

)'/

//

~--~

./ ,

""--'"---~-------...J........ I _

Table R1-9 11715-WMKS-0109G-2/271/2-RC-9/SW-43 r

Coverage Summary Angle Required Scans (each scan has a weighting factor of 100 for complete coverage)

UpSt-Ax UpSt-CW UpSt-CCW DnSt-Ax DnSt-CW DnSt-CCW 45 76% 28% 28%

Code Coverage Total 22%

Notes:

1J Code Coverage refers to the maximum percentage of the required examination volume that is effectively examined with the qualified examination procedure.

Serial No.1 0-013 Docket No. 50-338 NAPS Unit 1 3'd Interval Limited Exams Page 56 of 61 Figure R1-10 11715-WMKS-0111 BB/3-CH-1/19 R..ON Weld Thickness .448" Weld Length 11 "

Weld Width 0.75"

/ VPLVE

~

' ... '. / /"jiiijj - ~

ELBJW ......*.. (

/ r > r d~

.486' .432" .448' .M

~5(lJ, CO[l: COVERAGE

,f/,/,// ,,/ /

/ / / //~/ / < , BEST EFFORT 7llIlOGREE.fJl so IN

~EAOFNOEXAMlf'Ot,TION.08SO IN Exam Volume Dimensions = H - 0.14" L - 11" W - 1.75" NOT TO SCALE Table R1-10 11715-WMKS-0111 BB/3-CH-1/19 Coverage Summary Angle ReqUired Scans (each scan hasa weighting factor of 100 for complete coverage)

UpSt-Ax UpSt-Circ DnSt-Ax DnSt-Circ 45 100%

70 47% 100 Code Coverage Total 50%

Best Effort Coverage (Max 50%) Total 12%

Notes:

1) Code Coverage refers to the maximum percentage of the required examination volume that is effectively examined with the qualified examination procedure.

2) Best Effort Coverage refers to the requtred examination volume past the weld centerline that is examined wrth an Appendix Viii demonstrated procedure for single sided coverage.

Serial No.1 0-013 Docket No. 50-338 NAPS Unit 1 3'd Interval Limited Exams Page 57 of 61 Figure R1-11 11715-WMKS-RC-E-1 B.2/29-RC-4/N-SE29 IN.

11715-WMKS-RC-E-1 B.2/31-RC-5/N-SE31 IN.

Weld Width 1.75" Nozzle Pipe

/!-._--~-C-:-

/! \\'

\\\\.'\\ - .1\

\ \ -, \,

\,\ \ -,

\\\

\\

~ /

..J... -- ~..

NOT TO SCALE Table R1-11 11715-WMKS-RC-E-1 B.2/29-RC-4/N-SE29 IN.

Beam Angle Scan Exam Area Scan %

(degrees) Direction 34 Bottom 1/3T 5 100 45 Bottom 1/3T 7 100 45 Bottom 1/3T 8 100 45 Bottom l/3T 2 19 Total Percent 80%

Coverage UT Scan Direction Definitions 2 - Axial scan, 180 degrees from isometric flow direction (weld count).

5 - Axial scan, the same direction as the isometric flow (weld count).

7 - Circumferential scan, clockwise rotation when viewing in the direction of isometric flow.

8 - Circumferential scan, counterclockwise rotation when viewing in the direction of isometric flow.

Serial No.10-013 Docket No. 50-338 NAPS Unit 1 3rd Interval Limited Exams Page 58 of 61 Table R1-12 11715-WMKS-RC-E-1 B.2/31-RC-4/N-SE31 IN.

Beam Angle Scan Exam Area Scan %

(degrees) Direction 34 Bottom 1/3T 2 100 45 Bottom 1/3T 7 100 45 Bottom 1/3T 8 100 45 Bottom 1/3 T 5 15 Total Percent 79%

I Coverage UT Scan Direction Definitions c' - Axial scan, 180 degrees from isometric flow direction (weld count).

5 - Axial scan, the same direction as the isometric flow (weld count).

7 - Circumferential scan, clockwise rotation when viewing in the direction of isometric flow.

S - Circumferential scan, counterclockwise rotation when viewing in the direction of isometric flow.

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 59 of 61 Figure R1-12 11715-WMK5-01031<16-51-131/21 FLOIV 45 1EE V/iLVE.

Exam Volume Dimensions = H - 0.24" L- 21" W - 2" Weld Thickness .73" so AR:A EXAMINED Weld Length Weld Width 21" 1"

-, BEST B=FORf

• OBS1RLCTED OlE TO CON=IGURAllO-J Table R1-13 11715-WMK5-01031<16-51-131/21 Coverage Summary Angle Required Scans (each scan hasa weighttngtactor of 100 for complete coverage)

UpSt-Ax UpSt-Circ OnSt-Ax OnSt-Circ 45 100%

45/70 92%

60 Rl 21%

Code Coverage Total 48~!o Be.st Effort Coverage (Max 50%) Total 5%

Notes:

1) Code Coverage refers to the maximum percentage of the required examination volume that is effectively examined with the qualified examination procedure.

2) Best Effort Coverage refers to the required examination volume past the weld centerlrne that is examined with an Appendix vm demonstrated procedure for single Sided coverage.

Serial No.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 60 of 61 Figure R1-13 11715-WMKS-RC-E-1 C.2/31-RC-8/N-SE31 IN.

Bl1llYing Weld Thickness 4.84" Weld Length 130" Weld Width 1.5" 1'DT10 SCAlE SE 11* Taper 4.R4 il Exam Volume Dimensions =H - 1.6" L - 130" W - 2.5" Table R1-14 11715-WMKS-RC-E-1 C.2/31-RC-8/N-SE31 IN.

Coverage Summary Angle Required Scans (each scan has a weighting factor of 100 for complete coverage)

UpSt-Ax UpSt-Circ DnSt-Ax DnSt-Circ 345 100%

40 5 100% 100%

40 L 100% 100%

Code Coverage Total 50%

Best Effort Coverage (Max 50%) Total 25%

Notes:

1) Code Coverage refers to the maximum percentage of the required examination volume that is effectively examined with the qualified examination procedure.

2'1,I Best Effort Coverage refers to the required examination volume past the weld centerline that is examined VJith an Appendix vm demonstrated procedure for single sided coverage.

Serial NO.1 0-013 Docket No. 50-338 rd NAPS Unit 1 3 Interval Limited Exams Page 61 of 61 7.0 DURATION OF PROPOSED ALTERNATIVE This proposed alternative in this request if approved will be applicable for the third 10 year lSI interval for NAPS 1 which ended April 30, 2009.

8.0 PRECEDENTS Similar relief was granted in the Second Inservice Inspection (lSI) Interval, as follows:

1. Relief Request NDE-19, NRC Letter dated 8/7/1995 (TAC No. M89620)

2. Relief Request NDE-20, NRC Letter dated 8/7/1995 (TAC No. M89620)

3. Relief Request NDE-26, NRC Letter dated 11/17/1995 (TAC No. M92991)

4. Relief Request NDE-38, NRC Letter dated 2/2/1999 (TAC No. MA0410)

5. Relief Request NDE-47, NRC Letter dated 2/15/2000 (TAC No. MA6113)

6. Relief Request NDE-48, NRC Letter dated 2/15/2000 (TAC No. MA6113)

7. Relief Request NDE-49, NRC Letter dated 3/26/2001 (TAC No. MB0393)

8. Relief Request For Alternative Examination Of Weld 4, NRC Letter dated 5/14/2001 (TAC No. MA8915)

9.0 REFERENCES

1. ASME Code Section XI, 1989 Edition with No Addenda.

2. Relief Request NDE-6, NRC Letter dated 4/25/2000 (TAC No. MA5750)

3. ASME Code Case N-460, "Alternative Examination Coverage for Class 1 and Class 2 Welds"