ML20210E566

Interim Potential Deficiency Rept CDR 85-00-20 Re Failure of Fire Damper to Close Under Design Airflow Conditions. Initially Reported on 851206.Final Rept Will Be Submitted When Corrective Actions Completed

ML20210E566
Person / Time
Site:	Seabrook
Issue date:	03/06/1986
From:	Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
CDR-85--20, CDR-85-00-20, SBN-463, NUDOCS 8603270457
Download: ML20210E566 (2)

Text

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SEABROOK STATION EnEi neering Office Pub 8c Service of New Hampshbe March 6, 1986 SBN-963 Now Hampshire Yonkee Division 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 Programs

References:

(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) Telecon of December 6, 1985, D. M. Pepe and D. E. Groves (YAEC) to Robert Gallo (NRC Region I)

(c) PSNH Letter SBN-921, dated January 7,1986, " Interim 10CFR50.55(e) Report: Failure of Fire Damper to Close Under Design Airflow Conditions," John DeVincentis to R. W.

Starostecki

Subject:

Interim 10CFR50.55(e) Report: Failure of Fire Damper to Close Under Design Airflow Conditions (CDR 85-00-20)

Dear Sir:

References (b) and (c) reported a potential 10CFR50.55(e) item, wherein eleven of thirteen fire dampers failed to fully close when tested under design flow conditions.

The corrective acti n we identified was to determine, by analysis, which fire dampers would fail under dynamic flow conditions. Follow-up tests would be performed to verify the analysis. In addition, use of a stronger closure spring and/or dry lubricant on the damper guide tracks would be tested.

The above described corrective actions are still in progress. When they are completed, we will submit a final report.

Very truly ours, 9603270457 860306 PDR S ADOOK 05000443 PDR John DeVincentis, Director Engineering and Licensing cc: Atomic Safety and Licensing Board Service List i p P.O Box 300 + Seabrook.NH 03874 . Totophone(603)474-0521 l

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Patsr J. Mathews, Mayer , l Dicne Curetn Harmon & Weiss City Hall 20001 S. Street, W.W. Newburyport, MA 01950 Suite 430 Washington, D.C. 20009 Calvin A. Canney City Manager Sherwin E. Turk, Esq. City Hall Office of the Executive Legal Director 126 Daniel Street U.S. Nuclear Regulatory Commission Portsmouth, NH 03801 Washington, DC 20555 Stephen E. Merrill Robert A. Backus, Esquire Attorney General 116 Lowell Street Dana Bisbee, Esquire P.O. Box 516 Assistant Attorney General Manchester, NH 03105 Office of the Attorney General 25 Capitol Street Philip Ahrens, Esquire Concord, NH 03301-6397 Assistant Attorney General Department of The Attorney General Mr. J. P. Nadeau Statehouse Station #6 Selectmen's Office Augusta, ME 04333 10 Central Road Rye, NH 03870 Mrs. Sandra Gavutis Designated Representative.of Mr. Angie Machiros the Town of Kensington Chairman of the Board of Selectmen RFD 1 Town of Newbury East Kingston, NH 03827 Newbury, MA 01950 4

Jo Ann Shotwell, Esquire Mr. William S. Lord Assistant Attorney General Board of Selectmen Environmental Protection Bureau Town Hall - Friend Street Department of the Attorney General Amesbury, MA ~01913 One Ashburton Place,19th Floor Boston, MA 02108 Senator Gordon J. Humphrey 1 Pillsbury Street Senator Gordon J. Humphrey Concord, NH 03301 U.S. Senate (ATTN: Herb Boynton)

Washington, DC 20510 (ATTN: Tom Burack) H. Joseph Flynn Office of General Counsel Diana P. Randall Federal Emergency Management Agency 70 Collins Street 500 C Street, SW

', Seabrcok, NH 03874 Washington, DC 20472 Richard A. Hampe. Esq. Matthew T. Brock, Esq.

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Donald E. Chick i Town Manager Gary W. Holnes, Esq.

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