ML20093P015

Interim Deficiency Rept Re Incomplete Disc Opening in Velan Valve Corp Stop Check Valves.Initially Reported on 840914.Caused by Insufficient Quantity of Equalizing Holes. Discs Will Be Shipped to Velan for Drilling

ML20093P015
Person / Time
Site:	Seabrook
Issue date:	10/12/1984
From:	Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
SBN-720, NUDOCS 8411060096
Download: ML20093P015 (3)

Text

.o SEABROOK STATION E'%pl% Otmo.

UI 1671 Worcaseer Road homingham. Monochwnetts 01701 (417) . E72 8100 Pub 5c S&Mce of New Hampshire NEW HAMPSIIIRE YANKEE DIVISION October 12, 1984 SBN 720 T.F. Q2.2.2 United States Nuclear Regulatory Commission Region I '

631 Park Avenue King of Prussia, PA 19406 Attention: Mr. Richard W. Starostecki, Director Division of Project and Resident Prograns

References:

(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) Telecon of September 14, 1984, A. L. Legendre (YAEC) to Jane Grant (NRC Region I)

Subject:

Interim 10CFR50.55(e) Report; Velan Stop Check Valves

Dear Sir:

On September 14, 1984, we reported a 10CFR50.55(e) deficiency to Region I

[ Reference (b)], regarding incomplete disc opening in Velan Valve Corporation stop check valves.

The following information is being filed pursuant to the interim reporting provision of 10CFR50.55(e)(3).

A. Description of Deficiency The Velan Valve Corporation notified UE&C that a review indicated there could be a malfunction of five stop check valves supplied to Seabrook Station. Valves 1-W-V-216, 6"; 1-FW-V-76, 82, 88, and 94, 4" valves are affected. The malfunction consists of the disc not fully openie:3 under forward flow. The cause of the malfunction is the lack of equalizing holes or an insufficient quantity of equalizing holes in the side of the valve disc. This deficiency was discovered as a result of an incident at the TVA Bellefonte Station.

8411060096 841012

{DRADOCK 05000443 PDR 1000 ElmSt..P O Box 330.Monchester.NH O3105 . Telephone (603)669-4000 TWX 7102207595 I O

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• United' States Nuclear Regulatory Commission _

October 12, 1984 Attention: Mr. Richard W. Starostecki, Director Page 2 B.. Analysis of Safety Implications The Valve 1-FW-V-23r, 6" used in the feedwater, steam generator recirculation piping has no safety implication. The Valves 1-FW-V-76, 82,-88, and 94, 4" are used in the Emergency Feedwater System as stop check valves from the Emergency Feedwater System to the main feedwater lines. _ Failure of these valves to fully open could affect the safety of the plant by restricting flow during emergency.feedwater cooling operation.-

C. Corrective Action The Velan Valve Corporation provided dr.v ngs showing the quantity, size and location of the holes which should be drilled in the disc to make the valve perform satisfactorily. These discs will either be shipped to Velan for modification or be arilled at the site. In either case, Velan will supervise the work.

We will notify Region I when the above corrective actions are completed. 3 Very truly yours, H 9 .,n John DeVincentis, Director Engineering and Licensing cc: Atomic Safety and Licensing Board Service List Director, Office of Inspection and Enforcement U.S. Nucleer Reanla rnry Commission Washington, DC 20555 2

, . e William S. Jordan, III Diana Curran Harmon, Weiss & Jordan

.20001 S Street N.W. Brentwood Board of Selectmen Suite 430 RED Dalton Road Brentwood, New Hampshire 03833 Washington, D.C. 20009 Robert G. Perlis Office of the Executive Legal Director Edward F. Meany U.S. Nuclear Regulatory Commission Designa:ed Representative of Washington, DC 20555 the Town of Rye 155 Washington Road Robert A.-Backus. Esquire Rye, NH 03870 116 Lowell Street P.O. Box 516 -

Calvin A. Canney Mancehster, NH 03105 City Manager City Hall Philip Ahrens, Esquire 126 Daniel Street Assistant Attorney General Portsmouth, NH 03801 Department of the Attorney General Augusta, ME 04333 Dana Bisbee, Esquire Assistant Attorney General Mr. John B. Tanzer Office of the Attorney General Designated Representative of 20S State House Annex the Town of Hampton Concord, NH 03301 5 Morningside Drive Hampton, NH 03842 Anne Verge, Chairperson Board of Selectmen Roberta C. Pevear Town Hall Designated Representative of South Hampton, NH 03642 the Town of Hampton Falls Drinkwater Road Patrick J. McKeon Hampton Falls, NH 03844 Selectmen's Office 10 Central Road Mrs. Sandra Gavutis Rye, NH 03570 Designated Representative of the Town of Kenshgton Carole F. Kagan, Esq.

RFD 1 Atomic Safety and Licensing Board Panel East Kingston, NH 03827 U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Jo Ann Shotwell, Esquire Assistant Attorney General Mr. Angie Machiros Environmental Protection Bureau Chairman of the Board of Selectmen Department of the Attorney General Town of Newbury One Ashburton Place, 19th Floor Newbury, MA 01950 Boston, MA 02108  ;

Town Manager's Office ,

Senator Gordon J. Humphray Town Hall - Friend Street I U.S. Senate Amesbury, Ma. 01913  !

Washington, DC 20510 i (Attn: Tom Burack) Senator Gordon J. Humphrey 1 Pillsbury Street Diana P. Randall Concord, NH 03301 70 Collins Street (Attn: Herb Boynton)

SEabrook, NH 03874 Richard E. Sullivan, Mayor Donald E. Chick City Hall Town Manager Newburyport, MA 01950 Town of Exeter 10 Front Street Exeter, NH 03833 l

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