ML18152A045

Forwards Relief Requests from ASME Section XI Requirements for ISI Program,Covering Rcs,Si Sys,Chemical & Vol Control Sys & RHR Sys

ML18152A045
Person / Time
Site:	Surry
Issue date:	06/08/1993
From:	Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
93-323, NUDOCS 9306150392
Download: ML18152A045 (46)

Text

..

VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 June 8, 1993 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, D. C. 20555 Gentlemen:

VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNITS 1 AND 2 INSERVICE INSPECTION PROGRAM RELIEF REQUESTS Serial No.

NO/ETS Docket Nos.

License Nos.93-323 RO 50-280 50-281 DPR-32 DPR-37 Surry Power Station Units 1 and 2 are presently in the third period of their second ten-year interval for inservice inspections. Examinations during this interval have been conducted to the requirements of the 1980 Edition and Winter 1980 Addenda of ASME Section XI.

Pursuant to 1 O CFR 50.55a (g) 5, relief is requested from certain requirements of ASME Section XI associated with partial examinations conducted for both Surry Units 1 and 2.

Relief requests SR-018 and SR-019 (attached) for Surry Unit 1 and relief request SR-020 (attached) for Surry Unit 2 have been provided detailing the basis of these requests.

These relief requests have been reviewed and approved by the Station Nuclear Safety and Operating Committee.

Should you have any additional questions or require additional information, please contact us.

Very truly yours, Jff(e::/~--

w. L. Stewart Senior Vic~ President - Nuclear Attachments 140042

~

9306150392 93060880 PDR ADOCK 050002 G

PDR

[t011 I I

cc:

U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N. W.

Suite 2900 Atlanta, Georgia 30323 Mr. M. W. Branch NRC Senior Resident Inspector Surry Power Station

• INSERVICE INSPECTION PROGRAM RELIEF REQUESTS REC'D W/LTR DTD 06/08/93.... 9306150392

-NOTICE-THE ATTACHED FILE$ ARE OFFICIAL RECORDS OF THE INFORMATION &

REPORTS MANAGEMENT BRANCH.

THEY HAVE BEEN CHARGED TO YOU FOR A LIMITED TIME PERIOD AND MUST BE RETURNED TO THE RE-CORDS & ARCHIVES SE.RVICES SEC-TION P1..:.22 WHITE FLINT. PLEASE DO NOT SEND DOCUMENTS CHARGED OUT THROUGH THE MAIL. REMOVAL OF ANY PAGE(S) FROM DOCUMENT

. FOR REPRODUCTION 'MUST BE RE,.

FE.RRED TO FILE PERSONNEL.

.** -NOTICE-

Surry Power Station Unit 1 ISi Examination Relief

RELIEF REQUEST SR-018 I.

IDENTIFICATION OF COMPONENTS Mark/Weld#

1-01 1-14 H003-1 H003-2 1-02 1-02 1-01 1-01 Line#

27~ 11-RC-9-2501R 12 11-SI-46-1502 12"-SI-46-1502 System RC RC SI SI CH CH CH CH RH RH Drawing#

Class 11448-WMKS-RC-R-1.2 1

11448-WMKS-0102AZ-1 1

11448-WMKS-0122D1 1

11448-WMKS-0122D1 1

11448-WMKS-CH-E-2 2

11448-WMKS-CH-E-4 2

11448-WMKS-CH-FL-4A/4B 2 11448-WMKS-CH-E-2 2

11448-WMKS-RH-E-1A/1B 2

11448-WMKS-RH-E-1B 2

1-A01/1-B01 H001-1 System Abbreviations RC - Reactor Coolant System SI - Safety Injection System CH -

Chemical and Volume Control System RH - Residual Heat Removal System II.

IMPRACTICABLE CODE REQUIREMENTS The 1980 Edition, Winter 1980 Addenda (inclusive) of ASME Section XI in Tables IWB-2500-1 and IWC-2500-1 does not allow any limitations to the required volumetric and surface examinations.

Code Case N-460, Alternative Examination Coverage for Class 1 and Class 2 Welds, allows a reduction in coverage, if it is less than 10%.

III. BASIS FOR RELIEF IV.

The components listed above have been examined to the extent practical as required by the Code. Due to interferences of other components or weld joint geometry the reduction in coverage for the listed components was greater than 10%.

Tables SR-018-1 and 2 are provided detailing the limitations experienced.

Amplifying sketches or drawings are also provided. Alternative components could not be substituted for examination due either to the mandatory selection requirements of the Code, or because the examination coverage attained was representative of what could be expected for that type configuration.

ALTERNATE PROVISIONS It is proposed that the examinations already completed at the reduced coverage be counted as meeting the Code requirements.

MarklWeld#

Beam Angle 0*01 0

CO to 360 45 degrees) 45 45 45 60 60 60 60 45 & 60 45 & 60 45 & 60 45 & 60 UT Scan Direction Definitions 2

• Axial scan flange side of weld 5

• Axial scan head side of weld Table SR-018-1 Surry Unit 1 Examination coverage Estimates (Vessel) category B-A, Item Bl.40 Exam Area Scan Di rect ion

% Exam Reason For Partial Weld & Base 82 Proximity To Flange Weld 2

38 And Lifting Lug Weld 5

100 Interference Weld 7

100 Weld 8

100 Weld 2

19 Weld 5

100 Weld 7

100 Weld 8

100 Base 2

45 Base 5

96 Base 7

82 Base 8

82 7

• Circllllferential scan, clockwise (looking down on head) 8

• Circllllferential scan, counterclockwise (Looking down on head)

Sketch#lDrawing 1

11448-WMKS*RC*R-1.2

Table SR-018-2 Surry Unit 1 Examination Coverage Estimates (Piping, Vessels (< 2 11 thick) & Integral Attachments)

UT Scan Coverage%

Surface MarkLWeld#

Categor)!

Item#

~

2 7

8 Coverage%

Reason For Partial Sketch#LDrawing 1-14 B-J B9.11 99 0

100 100 N/A Valve To pipe Joint 2

Configuration/ V-path 11448*WMKS-0102AZ-1 Could Not Be Extended Due To Cast Austenitic Calibration Blocks H003-1 B-K-1 B10.10 N/A 50 Support Configuration 3

11448-WMKS-0122D1 H003-2 B-K-1 B10.10 N/A 50 support Configuration 3

11448-WMKS-0122D1 1-02(0-360°)

C-A C1.10 80*

80*

85 85 N/A Welded support Interference 11448-WMKS-CH-E-2

[1-CH-E-2]

And Inlet/Outlet Nozzle Configuration 1-02(0-360°)

C-A C1.10 80*

80*

87 87 N/A Inlet/Outlet Nozzle And 11448-WMKS-CH-E-4

[1-CH-E-4]

Flange Configuration 1-01(0-360°)

C-A C1.20 62*

56*

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[1-CH-FL-4A/4Bl Inlet Nozzle 11448-WMKS-CH-FL-4B 1-01(0-360")

C-A C1.20 45*

45*

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[1-CH-E-21 1-A01/1-B01 C-A C1.20 79*

73*

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And Inlet/Outlet Nozzle 11448-WMKS-RH-E-1B

[1-RH*E-1A/1Bl Configuration H001-1 c-c C3.10 N/A 64 Lower Underneath Plate Weld 11448*WMKS-RH-E-1B Of Integral Attachment Inaccessible Due To Clearance Between Vessel And Concrete

• - Extended V-path used to maximize coverage.

UT Scan Direction Definitions 2 - Axial scan, 180 degrees from isometric flow direction (weld.count) or on vertical vessels bottom side of weld.

5 - Axial scan, the same direction as the isometric flow (weld count) or on vertical vessels top side of weld.

7 - Circumferential scan, clockwise rotation when viewing in the direction of isometric flow (clockwise from 0 reference on vessels).

8 - Circumferential scan, counterclockwise rotation when viewing in the direction of isometric flow (counterclockwise from O reference on vessels).

~

45 DEGREE AND 60 DEGREE SCAN DIRECTIONS /

S --------

2~

WELD 1 Sketch #1

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-WMKS-0112AAI COF-51 SHELL ASTM A-240 GR 304 IB'-CC-17-121-SHELL SIDE OUTLET

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-WMKS-01! 7 A2 I

7 6

5

14) - 1 5/B' OIA. HOLES TYP. IN EACH SUPPORT PLATE

'i. TUBE SIDE OUTLET] __

NOZZLE REINFORCING SADDLE ASTM A-240 TP 304 <TYPICAL>

RESIDUAL HEAT REMOVAL EXCHANGER 1-RH-E-18

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FULL COUPLING!

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[SI

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RELIEF REQUEST SR-019 I.

IDENTIFICATION OF COMPONENTS Mark/Weld#

Line#

System Drawing#

Class 1-12 27\\"-RC-3-2501R RC 11448-WMKS-OlOOAZ-1 1

1-14 27\\"-RC-3-2501R RC 11448-WMKS-OlOOAZ-1 1

1-12 27\\"-RC-9-2501R RC 11448-WMKS-0102AZ-1 1

1-04 29 11 -RC-1-2501R RC 11448-WMKS-OlOOAZ-1 1

1-04 29 11-RC-7-2501R RC 11448-WMKS-0102AZ-1 1

1-11 31 11-RC-2-2501R RC 11448-WMKS-OlOOAZ-1 1

1-11 31 11-RC-8-2501R RC 11448-WMKS-0102AZ-1 1

1-05 6 11-RC-19-1502 RC 11448-WMKS-0127J2 1

System Abbreviation RC - Reactor Coolant System II.

IMPRACTICABLE CODE REQUIREMENTS The 1980 Edition, Winter 1980 Addenda (inclusive) of ASME Section XI in Table IWB-2500-1 does not allow any limitations to the required volumetric examinations. Code Case N-460, Alternative Examination Coverage for Class 1 and Class 2 Welds, allows a reduction in coverage, if it is less than 10%.

III. BASIS FOR RELIEF The components listed above have been examined to the extent practical as required by the Code. Due to interferences of other components or weld joint geometry the reduction in coverage for the listed components was greater than 10%. Prior to 1988 the Surry Unit 1 ISI Program contained generic relief requests concerning partial examination coverage. These relief requests SR-010 (Class 1 Category B-J) and SR-013 (Class 2 Category C-F) were withdrawn by letter serial# 88-332A dated September 30, 1988.

They were withdrawn as a result of correspondence received May 23, 1988 from the NRC, which indicated that generic relief requests could not be approved, and that specific information concerning weld/component identification, description of obstruction or limitation, and, estimate of Code coverage attained needed to be provided.

The examinations of the components above occurred in 1986 or earlier, when our procedures did not record specific scan coverage percentages. The examination record indicated what caused limitations, but not the degree of limitation in all directions. Table SR-019-1 is provided estimating the coverage experienced. This estimate is based upon values from later examinations of similar type components and geometric arrangements, and/or any information record~d for the specific examination. Alternative components were not substituted for

IV.

examination since the coverage attained was representative of what could be expected for these weld joint configurations.

ALTERNATE PROVISIONS It is proposed that the examinations already completed at the reduced coverage be counted as meeting the Code requirements.

Table SR-019-1 Surry Unit 1 Examination Coverage Estimates (Piping)

UT Scan Coverage%

Mark£Weld#

Catesorit:

Item#

i 2

z

§ Reason For Partial Drawing#

Estimate Basis 1-12 B-J B9.11 100 100 100 Identification Tag 11448-WMKS-0100AZ-1 Unit 2 weld 1-12 And Pump Nozzle examined 4/14/91 Configuration/ V-path (similar config.

Could Not Be Extended Unit 2 A-Loop)

Due To Cast Austenitic Calibration Blocks 1-14 B-J B9.11 99 100 100 Valve to Pipe Joint 11448-WMKS-0100AZ-1 Unit 1 weld 1-14 Configuration/ V-path examined 5/26/88 Could Not Be Extended (similar config.

Due To Cast Austenitic Unit 1 C-Loop)

Calibration Blocks 1-12 B-J B9.11 94 100 100 1'/z" Nozzle And Pump 11448-WMKS-0102AZ-1 Unit 2 weld 1-12 Configuration/ v-path examined 4/14/91 Could Not Be Extended (similar config.

Due To Cast Austenitic Unit 2 A-Loop)

Calibration Blocks 1-04 B-J B9.11 100 100 100 Valve To Elbow Joint 11448-WMKS-0100AZ-1 No similar exam, Configuration/ V-path estimate from Could Not Be Extended exam record Due To Cast Austenitic Calibration Blocks 1-04 B-J B9.11 100 100 100 Valve To Elbow Joint 11448-WMKS-0102AZ-1 No similar exam, Configuration/ V-path estimate from Could Not Be Extended exam record Due To Cast Austenitic Calibration Blocks 1-11 B-J B9.11 50 50 50 Pump and Elbow Joint 11448-WMKS-0100AZ-1 No similar exam, Configuration, and estimate from Support Interference/

exam record and V-path Could Not Be visual observation Extended Due To Cast of similar joint Austenitic Calibration Blocks

Mark/Weld#

1-11 1-05 Category B-J B-J Item#

B9.11 B9.11 Table SR-019-1 (Continued)

Surry Unit 1 Examination coverage Estimates (Piping)

UT Scan Coverage%

i

2.

z

§ 50 50 50 75 75al 75 75 Reason For' Partial Pump and Elbow Joint Configuration, and support Interference/

V-path Could Not Be Extended Due To Cast Austenitic Calibration Blocks Weld Crown And Valve To Tee Configuration

• - Scan was performed from this direction, coverage is unknown due to valve/pump configuration Limitation.

Note: Loop valves, pumps, and elbows made of cast austenitic material al - Extended V-path used to cover this scan direction 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 - CircL111ferentiaL scan, clockwise rotation when viewing in the direction of isometric flow.

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

(

Drawing#

Estimate Basis 11448-WMKS-0102AZ-1 No similar exam, estimate from exam record and visual observation of similar joint 11448-WMKS-0127J2 Drawing FP-10P, assumes no exam for 90° of 6x6x6 tee. Some coverage was attained in this region, however that extent is unknown.

8 F

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SEE DETAIL "I' ON j 11448*11HKS-01'1MZ*2 IB*U REVISED PER DC,1-il5 2

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Surry Power Station Unit 2 ISi Examination Relief

RELIEF REQUEST SR-020 I.

IDENTIFICATION OF COMPONENTS Mark/Weld#

Line#

System Drawing#

Class 1-05 8"-RC-311-2501R RC 11548-WMKS-RC-6 1

1-07 6 11-RC-316-1502 RC 11548-WMKS-0122H1 1

1-12 27~"-RC-303-2501R RC 11548-WMKS-RC-12-1 1

1-13 27~ 11-RC-303-2501R RC 11548-WMKS-RC-12-1 1

1-14 27~"-RC-303-2501R RC 11548-WMKS-RC-12-1 1

1-01 CH 11548-WMKS-CH-E-2 2

1-02 CH 11548-WMKS-CH-E-2 2

1-02 CH 11548-WMKS-CH-E-4 2

H001-1 30"-SHP-102-601 MS 11548-WMKS-0101D1 2

H001-2 30 11-SHP-102-601 MS 11548-WMKS-0101D1 2

H004-1 30"-SHP-103-601 MS 11548-WMKS-0102D1 2

H004-2 30"-SHP-103-601 MS 11548-WMKS-0102D1 2

System Abbreviation RC-Reactor Coolant System CH-Chemical and Volume Control System MS-Main Steam System II.

IMPRACTICABLE CODE REQUIREMENTS The 1980 Edition, Winter 1980 Addenda (inclusive) of ASME Section XI in Tables IWB-2500-1 and IWC-2500-1 does not allow any limitations to the required volumetric and surface examinations.

Code Case N-460, Alternative Examination Coverage for Class 1 and Class 2 Welds, allows a reduction in coverage, if it is less than 10%.

III. BASIS FOR RELIEF IV.

The components listed above have been examined to the extent practical as required by the Code. Due to interferences of other components or weld joint geometry the reduction in coverage for the listed components was greater than 10%. Table SR-020-1 is provided detailing the limitations experienced.

Amplifying sketches or drawings are also provided. Alternative components could not be substituted for examination due to the mandatory selection requirements of the Code, or because the examination coverage attained was representative of what could be expected for that type configuration.

ALTERNATE PROVISIONS It is proposed that the examinations already completed at the reduced coverage be counted as meeting the Code requirements.

Additionally the main steam integral attachments (H001-1, HOOl-2, H004-1, and H004-2) shall be visually (VT-1) examined

1-~

for cracking and abnormal inservice induced conditions at the next refueling outage scheduled tentatively for September 1994 (10 year ISI).

Table SR-020-1 Surry Unit 2 Examination coverage Estimates (Piping and Vessels (< 2" thick) & Integral Attachments)

UT Scan Coverage%

Surface MarkLWeld#

Categorll'.

Item#

i

2.

1.

§ Coverage%

Reason For Partial Sketch#LDrawing 1-05 B-J B9.11 89 89*

100 100 N/A Valve And Pipe Joint 1

Configuration 11548-WMKS-RC-6 1-07 B-J B9.11 83*

83 100 100 N/A Valve And Elbow 2

Joint Configuration 11548-WMKS-0122H1 1-12 B-J B9.11 100 0

100 100 N/A Pump And Pipe Joint 3

Configuration/ V-path 11548-WMKS-RC-12-1 Could Not Be Extended Due To Cast Austenitic Calibration Blocks 1-13 B-J B9.11 0

100 100 100 N/A Valve And Pipe Joint 3

Configuration/ V-path 11548-WMKS-RC-12-1 Could Not Be Extended Due To Cast Austenitic Calibration Blocks 1-14 B-J B9.11 100 0

100 100 N/A Valve And Pipe Joint 3

Configuration/ V-path 11548-WMKS-RC-12-1 Could Not Be Extended Due To Cast Austenitic Calibration Blocks 1-01(0-360°)

C-A C1.20 66 66 38 38 N/A Welded Support, Extended 11548-WMKS-CH-E-2

[2-CH-E-2]

V-path Used to Maximize Coverage 1-02(0-360°)

C-A C1.10 95 95 77 77 N/A Flange/Weld Configuration, 11548-WMKS-CH-E-2

[2-CH-E-2]

Welded Support, Nozzles 1-02(0-360°)

C-A C1.10 77 77 80 80 N/A Nozzles, Extended V-path 11548-WMKS-CH-E-4

[2-CH-E-4]

Used to Maximize Coverage H001-1 c-c C3.40 N/A 80 Support Configuration 4

11548-WMKS-0101D1 H001-2 c-c C3.40 N/A 80 Support Configuration 4

11548-WMKS-0101D1

Table SR-020-1 (Continued)

Surry Unit 2 Examination Coverage Estimates (Piping and Vessels (< 2 11 thick) & Integral Attachments)

Mark/Weld#

H004-1 H004-2 Category c-c c-c Item#

C3.40 C3.40

• - Extended V-path used to maximize coverage UT Scan Direction Definitions UT Scan Coverage%

i

2.

z

§ N/A N/A Surface Coverage%

57 57 Reason For Partial Support Configuration support Configuration 2 - Axial scan, 180 degrees from isometric flow direction (weld count) or on vertical vessels bottom side of weld.

5 - Axial scan, the same direction as the isometric flow (weld count) or on vertical vessels top side of weld.

Sketch#/Drawing 5

11548-\\.IMKS-0102D1 5

11548-\\.IMKS-0102D1 7 - Circumferential scan, clockwise rotation when viewing in the direction of isometric flow (clockwise from O reference on vessels).

8 - Circumferential scan, counterclockwise rotation when viewing in the direction of isometric flow (counterclockwise from O reference on vessels).

• *~

Weld 1-os on Line No. a 11-Rc-311-2so1R C 1/ 3t) 0.719 C 1/ 3t)

Exam. Vol.

C-D-E-F Sketch #1

8.

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B A

21-FEB-lqq0 21121 QSA3r [ 355, 002 l00RC0006 I, DGN 7

2'1'-RC-301-2501R-TO 11548

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-WMKS-RC-6Z laC-2>

4 3

1-04

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!NOTE 3>

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( 1/ 3t)

Valve 2-Sl-239 1/4" D.187" C 1/ 3t) 1.125" Exam. Vol.

C-D-E-F

[)"awl ng t-bt To Sea I e Sketch #2

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6 5

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23-NOV-1'1'12 15,47 ZG51 [355,002l0122H001 I.OGN SENSITIZED PIPING

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2-24 2-23 2-22 2-21 C2 BENDS>

2-18 C2 BENDSI 2-16 12 BENDS>

2-13 12 BENDS>

2-11 2-10 2-0'1 2

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C-D-E-F D-awin Not To Scale E

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8 F

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DRAWING NOT TO SCALE Sketch #4

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