ML19324C312

Responds to NRC Bulletin 89-002, Stress Corrosion Cracking of High Hardness Type 410 Stainless Steel Internal Preloaded Bolting in Anchor Darling Model S350W Swing Check Valves or Valves of Similar Design.

ML19324C312
Person / Time
Site:	Seabrook
Issue date:	11/06/1989
From:	Feigenbaum T PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
IEB-89-002, IEB-89-2, NYN-89138, NUDOCS 8911160114
Download: ML19324C312 (2)

Text

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}NeWy Hampshire Tod C. F ..-

1 g Senior Vice President and 1

& Chief Operating Officer E

NYN-89138 November 6, 1989 L

United' States Nuclear Regulatory Conunission E Washington, DC 20555 i Attention: Document Control Desk

References:

(a) Facility. Operating License NO. NPF-67. Docket No. 50-443 F

(b) NRC Bulletin No. 89-02 dated July 19, 1989, ' Stress

• Corrosion Cracking of High-Hardness Type 410 Stainless

• Steel Internal Preloaded Bolting in Anchor Darling Model S350W Swing Check Valvec or Valves of Similar Design?

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Subject:

Response to NRC Bulletin 89-02 Gentlemen: ,

.NRC Bulletin 89-02 requested information pursuant to J CFR 50.64(f), .

regarding the usage of swing check valves with preloaded-internal bolting.

In response to NRC Bulletin 89-02, New Hampshire Yankee (NHY) provides the '

following:information.

Anchor Darling Model S350W Swing Check Valves 1.re not utilized in i

safety-related applications at Seabrook Station. Additionally, no swing check valves of similar design to that of the Anchor Darling Model S350W with preloadsd Type 410 stainless steel internal boltic.g.are utilized in ,

safety-related applications at Seabrook Station. ,

Based upon the aoove findings, NHY plans no further action in response to NRC.Bulletin 89-02.

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.Should you have any questions regarding this information, please 1( contact Mr. Geoffrey Kingston at (603) 474-P521, extension 3371.

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Very truly yours, s

- h f h A4 Ted C. Feigenbaum 6

l 1 ', 0911160114 891106 PDR ADCCK 05000443 O PDC j

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/, New Hampshire Yankee Division of Public Service Company of New Hampshire y

, P.O. Box 300

• Seabrook, NH 03874

• Telephone (603) 474 9521

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.- l United States Nuclear Regulatory Commission November 6, 1989 -

Attention: Document Control Desk cc Mr. William T. Russell Regional Administt'stor United States Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406 P

Mr. Victor Nerses. Project Manager Project Directorate I--3 United States Nuclect Regulatory Commission Division of Reactor Projects t Washington, DC 20555 Mr. Antone C. Cerne NRC Senior Resident Inspector P.O. Box 1149 Seabrook, NH 93874 STATE OF NEW EAMPSHIRE  :

Rockingham, ss. November 6, 1989 Then personally appeared before me, the above-named Ted C. Feigenbaum ,

who, being duly sworn, did state that ae is Senior Vice President and Calef I

Operating Office of New Hampshire 'lankee, that he is duly authorized to execute and file the foregoing information in the name and on the behalf of New y Hampshire Yankee, and that the statements therein are true to the best of his j

knowledge and belief. ,

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bneb 8PON%m Beverly E. LEL110way, Hotary Public l

l My Commission Expires thrch 6,1990 1.

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