ML18153C690

Informs That Nineteen Velan Check Valves Installed in Unit 2 Were Evaluated as Being within Scope of NRC Bulletin 89-002, Stress Corrosion Cracking of High-Hardness Type 410 Stainless Steel Internal Preloaded Bolting in Anchor..

ML18153C690
Person / Time
Site:	Surry
Issue date:	08/06/1991
From:	Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
89-548B, IEB-89-002, IEB-89-2, NUDOCS 9108120157
Download: ML18153C690 (3)

Text

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ACCELERATED.*

RIBlJTION DEMONS.TION SYSTE~

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9108120157 DOC.DATE: 91/08/06 NOTARIZED: NO

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FACIL:50-281 Surry Power Station, Unit 2, Virginia Electric & Powe 05000281 AU~l'H. NAME AUTHOR AFFILIATION STEWART,W.L.

Virginia Power (Virginia Ele.ctric & Power Co.)

RECIP. NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

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SUBJECT:

Informs that nineteen velan check valves installed in unit 2 were evaluated as being within scope of NRC bulletin 89-002, "Stress Corrosion Cracking of High-Har~ness Type 410 Stainless steel Internal Preloaded Bolting in Anchor.... "

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s DISTRIBUTION CODE: IE32D COPIES RECEIVED:LTR =1 ENCL O SIZE:

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TITLE*: Bulletin Response 89-02 re Cracking of High-Hardness Type 410 Bolting I NO'I'ES: lcy NMSS/IMSB/PM.

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/N~E LTTR ENCL PD2-2 LA 1

PD2-2 PD 1

BUCKLEY,B 1

INTERNAL: AEOD/DOA 1

NRR/DET/ECMB9H 2

NRR/DET/EMEB 7E 1

NRR/DOEA/OEABll 1

NRR/DOEA/OGCBll 1

NRR/DREP/PEPB9D 1

NRR/DST 8E2 1

NRR/EMCB/HERMAN 1

NRR/MCLELLAN,T 1

N~~!~~1~B12 1

NRR/ROOD,H 1

R-E::0:2 1

.RES/DSIR/EIB 1

RGN2 FILE 01 1

EXTERNAL: NRC PDR

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NSIC 1

NOTES:

1 NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE \\\\'ASTE! CONT ACT THE DOCUMENT CONTROL DESK, ROOI\\1 Pl-37 (EXT. 20079) TO EL!l\\.1INATE YOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

U TOTAL NUMBER OF COPIES REQUIRED: LTTR 21 ENCL

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VIRGINIA ELECTRIC,iAND POWER COMPANY R1CHMOND/V1R01NIA 23261 August 6, 1991 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, D. C. 20555 Gentlemen:

VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNIT 2 Serial No.

89-5488 NO/RJS Docket Nos. 50-281 License Nos. DPR-37 NRC BULLETIN NO. 89-02: 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 As described in our letter (Serial No. 89-548A) dated February 12, 1991, nineteen Velan check valves installed.in Unit 2 were evaluated as being within the scope of Bulletin 89-02.

These valves were scheduled to have their hanger bracket bolts inspected during the next refueling outage.

Prior to the beginning of the Unit 2 Cycle 1 O refueling outage, one of the nineteen

• valves was verified to have ASTM A 193 Grade B8M bolting material and thus the*

valve was eliminated from the scope of Bulletin 89-02. Inspection of the remaining eighteen Velan check valves installed tn Unit 2 was. cornpleted during the Unit 2 Cycle 1 O refueling outage. Each of the Ve Ian check valves was.verified to have ASTM A 193 Grade B8 or B8M bolting material. No obvious defects or failures of the installed bolting material were observed.

These inspections complete corrective actions initiated for Surry Power Station in response to Bulletin 89-02.

Should you have any questions concerning this submittal, please contact us.

Very truly yours, w.L~

w: L. Stewart Senior Vice President - Nuclear cc:

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

Suite 2900 Atlanta, Georgia 30323 Mr. M. W. Brahch NRC Senior Resident Inspector Surry Power Station Qt:":nn,..;:,

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COUNTY OF HENRICO.

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The foregoing document was -acknowledged before me, in and for the County and Commonwealth aforesaid, today by W. L. Stewart who is Senior Vice President - Nuclear, of Virginia Electric and Power Company.

He is duly authorized to _execute and file the foregoing document in behalf of that Company, and the statements in the document are true to the best of his knowledge and belief.

Acknowledged before me this l, 7JI day of. d<<3ud

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. My Commission Expires:

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