ML20214Q866

Final Deficiency Rept CDR 85-00-20 Re Failure of Fire Damper to Close Under Design Airflow Conditions.Initially Reported on 851206.Calculations to Determine Which Fire Dampers Could Fail Under Dynamic Flow Conditions Taken

ML20214Q866
Person / Time
Site:	Seabrook
Issue date:	09/16/1986
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-1195, NUDOCS 8609260387
Download: ML20214Q866 (2)

Text

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SEABROOK STATION Engineering Office September 16, 1986 Pubuc Service of New Hampshire NEW HAMPSHIRE YANKEE DIVISION SBN- 1195 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-963), dated March 6, 1986, " Interim 10CFR50.55(e) Report: Failure of Fire Damper to Close Under Design Airflow Conditions", J. DeVincentis to R. W. Starostecki Subj ect: Final 10CFR50.55(e) Report: Failure of Fire Damper to

Close Under Design Airflow Conditions (CDR 85-00-20) l

Dear Sir:

In Reference (b), we reported a 10CFR50.55(e) deficiency regarding failure of fire dampers to close under design airflow conditions. Failure of fire dampers to close under these flow conditions would violate the integrity of the fire barriers which could prevent safe shutdown of the plant due to a fire.

We have completed the following corrective actions [see also Reference (c)] required for this item:

1. Calculations to determine which fire dampers could f ail under dynamic flow conditions.

8609260387 860916 PDR ADOCK 05000443 A PDR Seabrook Station Construction Field Office . P.O. Box 700 . Seabrook, NH 03874 --

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o United States Nuclear Regulatory Commission SBN- 1195 Attention: Mr. Richard W. Starostecki Page 2

2. A test program to verify the calculations and damper closure under operating airflow conditions.

3. Modification (e.g., stronger closure spring) of fire dampers as required.

4. As a minimun, retesting of all modified fire dampers to verify closure under operating airflow conditions.

As such, this is considered our final report on this item.

Very truly yours, i 4, ,,e gin / SN' John DeVincentis Director of Engineering cc: Atomic Safety and Licensing Board Service List Director, Of fice of Inspection and Enforcement United States Nuclear Regulatory Commission Washington, DC 20555

Diane Curran, Esquire Peter J. Mathews, Mayor

• City Hall Harmon & Weiss 2001 S. Street, N.W. Newburyport, MA 01950 Suite 430 Washington, D.C. 20009 Judith H. Mizner Silvergate, Gertner, Baker, Sherwin E. Turk, Esq. Fine, Good & Mizner Office of the Executive Legal Director 88 Broad Street U.S. Nuclear Regulatory Commission Boston, MA 02110 Tenth Floor Washington, DC 20555 Calvin A. Canney City Manager Robert A. Backus, Esquire City Hall 116 Lowell Street 126 Daniel Street P.O. Box 516 Portsmouth, NH 03801 Manchester, NH 03105 Stephen E. Herrill, Esquire Philip Ahrens, Esquire Attorney General Assistant Attorney General George Dana Bisbee, Esquire Depart =ent of The Attorney General Assisthot Attorney General Statehouse Station #6 Office of the Attorney General Augusta, ME 04333 25 Capitol Street Concord, NH 03301-6397 Mrs. Sandra Gavutis Chairman, Board of Selectmen Mr. J. P. Nadeau RFD 1 - Box 1154 Selectmen's Office Kennaington, NH 03827 10 Central Road Rye, NH 03870 Carol S. Sneider, Esquire Assistant Attorney General Mr. Angie Machiros Department of the Attorney General Chairman of the Board of Selectmen One Ashburton Place,19th Floor Town of Newbury Boston, MA 02108 Newbury, MA 01950 Senator Gordon J. Humphrey Mr. William S. Lord U.S. Senate Board of Selectmen Washington, DC 20510 Town Hall - Friend Street (ATTN: Tom Burack) Amesbury, MA 01913 Richard A. Hampe, Esq. Senator Gordon J. Humphrey Hampe and McNicholas 1 Pillsbury Street 35 Pleasant Street Concord, NH 03301 Concord, NH 03301 (ATIN: Herb Boynton)

Thomas F. Powers, III H. Joseph Flynn, Esquire Town Manager Office of General Counsel Town of Exeter Federal Emergency Management Agency 10 Front Street 500 C Street, SW Exeter, NH 03833 Washington, DC 20472 Brentwood Board of Selectmen Paul McEachern, Esquire RFD Dalton Rnad Matthew T. Brock , Esquire Brentwood, NH 03833 Shaines & McEachern 25 Maplewood Avenue Gary W. Holmes, Esq. P.O. Box 360 Holmes & Ells Portsmouth,Jni0,3801  ;; ; [g 47 Winnacunnet Ro'ad Hampton, NH 03842 Robert Carrigg]( ,

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, , ; j Town Office i Mr. Ed Thomas Atlantic Avenue l FEMA Region I North Hampton, NH 03862 442 John W. McCormack PO & Courthouse Boston, MA 02109

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