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        $n areg
    #            o.                          UNITED STATES E"            }                NUCLEAR REGULATORY COMMISSION 5              e j                      WASHINGTON, D. C. 20555                            I
      +....f                                    Jure 15, 1988 Docket No.: 50-370                                                                        ,
1 l
Mr. H. B. Tucker, Vice President                                                      i Nuclear Producticn Department                                                        )
Duke Powe Company                                                                      l 422 South Church Street                                                              1 Charlotte, North Carolina 28242
 
==Dear Mr. Tucker:==
 
==SUBJECT:==
RELIEF FROM ASME CODE SECTION XI REQUIREi1ENT FOR THE NUCLEAR SERVICE        l WATER SYSTEM, MCGUIRE NUCLEAR STATION, UNIT 2, RELIEF REQUEST NO.
88-02 (TAC-68050)
By letter dated April 27, 1988, you submitted Relief Request No. 88-02 which requested relief from the ASME Boiler and Pressure Yessel Code Section XI requirement for hydrostatic testing of repair welds associated with valves 2RN134 and 2RN235 in the Nuclear Service Water System at the McGuire Nuclear Station, Unit 2.        Pursuant to 10 CFR 50.55a(g)(5)(iii), you had determined that the test requirement of Section XI, 1980 Edition, Winter 1980 Addenda, Articles IWA-4400 and IWA-5000, was impractical to perform because the repaired piping containing the subject welds could not be, isolated for pressurization. The pump capacity to pressurize the piping is insufficient to offset the leakage through the butterfly valves used to isolate the welded section. The Nuclear Service Water System contains butterfly type valves ranging in size from 18-inch to 36-inch end operates at a design pressure and temperature of 135          .
psig and 95 F, respectively.                                                          '
The integrity of the weld repair will be assured by performing alternative inspections, namely, either a dye penetrant (PT) or magnetic particle (MT)            l inspection of both the root and final weld passes. In addition, an inservice          l leek test at system pressure and temperature will be performed to detect eeld          !
defects and through wall leakage when the system is placed in service,                j The staff has evaluated Relief Request No. 88-02. We conclude that the ASME            l Code Section XI test reouirement is impractical to perform at the McGuire              ,
Nuclear Station, Unit 2, and that the alternatives described above provide an        !
ecceptable revel of structural integrity for the Nuclear Service Water System.
8806230251 880615 PDR P
ADOCK 05000370 PDR
 
k e
Mr. H. B. Tucker Duke Power Company                              McGuire Nuclear Station            '
cc:
Mr. A.V. Carr, Esq.                            Dr. John M. Barry Duke Power Company                              Department of Environmental Health P. O. Box 33189                                Mecklenburg County 422 South Church Street                        1200 Blythe Bculevard Charlotte, North Carolina 28242                Charlotte, North Carolina 28203 County Manager of Mecklenburg County            Mr. Dayne H. Brown, Chief 720 East Fourth Street                          Radiation Protection Cranch Charlotte, North Carolina 28202                Division of Facility Services Department of Human Resources 701 Barbour Drive Mr. Robert Gill                                Raleigh, North Carolina 27603-2000 Duke Power Ccmpany Nuclear Production Department P. O. Box 33189 Charlotte, North Carolinc 28242 J. llichtel McGarry, III, Esq.
Bishop, Liberman, Cook, Purcell and Reynolds 1200 Seventeenth Street, N.W.
Washington, D. C. 2003C Senior Resident Inspector c/o U.S. Nuclear Regulatory Comission Route 4, Box 529                                                                  )
Huntersille, North Carolina 28078 Regional Administrator, Region II U.S. Nuclear Regulatory Comission, 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323 S. S. Kilborn Area Manager, Mid-Scuth Area ESSD Projects Westinghouse Electric Corporation MNC West Tower - Bay 239                                                            ,
P. O. Box 355 Pittsburgh, Pennsylvania    IE230
 
I 1
w Mr. H. B. Tucker                            'Accordingly, relief from the hydrostatic test requirement is granted for McGuire Unit 2 as requested, pursuant to 10 CFR 50.55a(a)(3)(1).            The proposed dlterndtiVes Will provide an 8CCeptable level of qu8lity and safety.
[s ;                                                Sincerely, Original sijned by:
David B. flatthews, Director Project Directorate II-3 Division of Reactor Projects I/II cc:
See next page DISTRIBUTION:
DoH it FTTi--
NRC PDR Locci PDR PDII-3 Reading McGuire Reading S. Varga G. Lainas D. Matthews M. Rood D. Hood 0GC-WF E. Jordan J. Partlow ACRS (10)
F. Litton C. Y. Chena W. Hazelton I
l
        *SEE PREVIOUS PAGE FOR CONCURRENCE                q  i I LA-@II-3*        PM:PDII-3*    OGC-WF*              EDII-3 MR,ood          DHood:pw                          latthews                                  )
06/08/88        06/14/88      06/09/88                                                        '
                                                            /f/88
 
i o                                                                                                                        ,
l Mr.=H. B. Tucker                                                                                                  ,
1 l
Accordingly, relief from the hydrostatic test requirement is I                  -McGuire Unit 2 as requested, pursuant to 10 CFR 50.55a(a)(3)(granted            1). The proposed: for p                  alternatives will provide ~ an acceptable level of quality and safety.                                                  .
I' Sincerely,:
Original signed by:
David B. flatthews,' Director        .
i Project Directorate 11                                                          l Division of Reactor Projects I/II-                                                  j cc:                                                                                                                          l See next page                                                                                                                '
DISTRIBUTIWl:
                  , Docket 41,Je]                                    -
NRC'PDR                                ,
* Local POR                                    ' " "i PDII-3 Reading-                                                  ,
McGuire Reading S. Yarga                            .
G. Lainas D. Matthews                                      -
M. Rood D. Hood              ,
OGC-WF E. Jordan                                  -
J. Partlow ACRS (10).
F. Litton C. Y.~  Cheng
: k. Hazelton
                    *SEE PREVIOUS PAGE FOR CONCVRRENCE                      d LA      II-3*    PM:PDII-3*  OGC-WF*                      I I'-3 Mk                OHood:pw                  1        latthews OG/08/88          06/14/88    06/09/88
                                                                            /f/88
                                                                            .          - _ . - -          . . - - . - . - . . .        -    -}}

Revision as of 16:30, 16 December 2020

Concludes That ASME Code Section XI Test Requirement Impractical to Perform at Facility & Alternatives Described Above Provide Acceptable Level of Stuctural Integrity for Nuclear Svc Water Sys
ML20195D934
Person / Time
Site: Mcguire
Issue date: 06/15/1988
From: Matthews D
Office of Nuclear Reactor Regulation
To: Tucker H
DUKE POWER CO.
References
TAC-68060, NUDOCS 8806230251
Download: ML20195D934 (4)
v • d • e


Text

)

$n areg

  1. o. UNITED STATES E" } NUCLEAR REGULATORY COMMISSION 5 e j WASHINGTON, D. C. 20555 I

+....f Jure 15, 1988 Docket No.: 50-370 ,

1 l

Mr. H. B. Tucker, Vice President i Nuclear Producticn Department )

Duke Powe Company l 422 South Church Street 1 Charlotte, North Carolina 28242

Dear Mr. Tucker:

SUBJECT:

RELIEF FROM ASME CODE SECTION XI REQUIREi1ENT FOR THE NUCLEAR SERVICE l WATER SYSTEM, MCGUIRE NUCLEAR STATION, UNIT 2, RELIEF REQUEST NO.

88-02 (TAC-68050)

By letter dated April 27, 1988, you submitted Relief Request No. 88-02 which requested relief from the ASME Boiler and Pressure Yessel Code Section XI requirement for hydrostatic testing of repair welds associated with valves 2RN134 and 2RN235 in the Nuclear Service Water System at the McGuire Nuclear Station, Unit 2. Pursuant to 10 CFR 50.55a(g)(5)(iii), you had determined that the test requirement of Section XI, 1980 Edition, Winter 1980 Addenda, Articles IWA-4400 and IWA-5000, was impractical to perform because the repaired piping containing the subject welds could not be, isolated for pressurization. The pump capacity to pressurize the piping is insufficient to offset the leakage through the butterfly valves used to isolate the welded section. The Nuclear Service Water System contains butterfly type valves ranging in size from 18-inch to 36-inch end operates at a design pressure and temperature of 135 .

psig and 95 F, respectively. '

The integrity of the weld repair will be assured by performing alternative inspections, namely, either a dye penetrant (PT) or magnetic particle (MT) l inspection of both the root and final weld passes. In addition, an inservice l leek test at system pressure and temperature will be performed to detect eeld  !

defects and through wall leakage when the system is placed in service, j The staff has evaluated Relief Request No. 88-02. We conclude that the ASME l Code Section XI test reouirement is impractical to perform at the McGuire ,

Nuclear Station, Unit 2, and that the alternatives described above provide an  !

ecceptable revel of structural integrity for the Nuclear Service Water System.

8806230251 880615 PDR P

ADOCK 05000370 PDR

k e

Mr. H. B. Tucker Duke Power Company McGuire Nuclear Station '

cc:

Mr. A.V. Carr, Esq. Dr. John M. Barry Duke Power Company Department of Environmental Health P. O. Box 33189 Mecklenburg County 422 South Church Street 1200 Blythe Bculevard Charlotte, North Carolina 28242 Charlotte, North Carolina 28203 County Manager of Mecklenburg County Mr. Dayne H. Brown, Chief 720 East Fourth Street Radiation Protection Cranch Charlotte, North Carolina 28202 Division of Facility Services Department of Human Resources 701 Barbour Drive Mr. Robert Gill Raleigh, North Carolina 27603-2000 Duke Power Ccmpany Nuclear Production Department P. O. Box 33189 Charlotte, North Carolinc 28242 J. llichtel McGarry, III, Esq.

Bishop, Liberman, Cook, Purcell and Reynolds 1200 Seventeenth Street, N.W.

Washington, D. C. 2003C Senior Resident Inspector c/o U.S. Nuclear Regulatory Comission Route 4, Box 529 )

Huntersille, North Carolina 28078 Regional Administrator, Region II U.S. Nuclear Regulatory Comission, 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323 S. S. Kilborn Area Manager, Mid-Scuth Area ESSD Projects Westinghouse Electric Corporation MNC West Tower - Bay 239 ,

P. O. Box 355 Pittsburgh, Pennsylvania IE230

I 1

w Mr. H. B. Tucker 'Accordingly, relief from the hydrostatic test requirement is granted for McGuire Unit 2 as requested, pursuant to 10 CFR 50.55a(a)(3)(1). The proposed dlterndtiVes Will provide an 8CCeptable level of qu8lity and safety.

[s ; Sincerely, Original sijned by:

David B. flatthews, Director Project Directorate II-3 Division of Reactor Projects I/II cc:

See next page DISTRIBUTION:

DoH it FTTi--

NRC PDR Locci PDR PDII-3 Reading McGuire Reading S. Varga G. Lainas D. Matthews M. Rood D. Hood 0GC-WF E. Jordan J. Partlow ACRS (10)

F. Litton C. Y. Chena W. Hazelton I

l

  • SEE PREVIOUS PAGE FOR CONCURRENCE q i I LA-@II-3* PM:PDII-3* OGC-WF* EDII-3 MR,ood DHood:pw latthews )

06/08/88 06/14/88 06/09/88 '

/f/88

i o ,

l Mr.=H. B. Tucker ,

1 l

Accordingly, relief from the hydrostatic test requirement is I -McGuire Unit 2 as requested, pursuant to 10 CFR 50.55a(a)(3)(granted 1). The proposed: for p alternatives will provide ~ an acceptable level of quality and safety. .

I' Sincerely,:

Original signed by:

David B. flatthews,' Director .

i Project Directorate 11 l Division of Reactor Projects I/II- j cc: l See next page '

DISTRIBUTIWl:

, Docket 41,Je] -

NRC'PDR ,

  • Local POR ' " "i PDII-3 Reading- ,

McGuire Reading S. Yarga .

G. Lainas D. Matthews -

M. Rood D. Hood ,

OGC-WF E. Jordan -

J. Partlow ACRS (10).

F. Litton C. Y.~ Cheng

k. Hazelton
  • SEE PREVIOUS PAGE FOR CONCVRRENCE d LA II-3* PM:PDII-3* OGC-WF* I I'-3 Mk OHood:pw 1 latthews OG/08/88 06/14/88 06/09/88

/f/88

. - _ . - - . . - - . - . - . . . - -

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