ML20206S703

Advises That Individual Charcoal Fire Models Will Be Developed for Charcoal Filters EAH-F-9,69,FAH-F-41,74, CAH-F-8,PAH-F-116 & CAP-F-40,per NRC 860908 Concerns & Recent Discussions Re Fire Hazards Analyses

ML20206S703
Person / Time
Site:	Seabrook
Issue date:	09/17/1986
From:	Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	Noonan V Office of Nuclear Reactor Regulation
References
SBN-1193, NUDOCS 8609220343
Download: ML20206S703 (3)

Text

g SEABROOK STATION Enginscring Office

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k Putsc SeMce of New Hampshire September 17, 1986 NEW HAMPSHIRE YANKEE DIVISION SBN-1193 T.F.

B9.6.99, B7.1.2 United States Nuclear Regulatory Commission Washington, DC 20555 i

Attention:

Mr. Vincent S. Noonan, Project Director PWR Project Directorate No. 5

References:

(a) Construction Permits CPPR-135 and CPPR-136, Docket Nos. 50-443 and 50-444 (b) USNRC Letter dated September 8,1986, " Staff Position; Seabrook Station Fire Protection Program Charcoal Filter Units", V. S. Noonan to R. J. Harrison

-(c) PSNH Letter (SBN-1190), dated September 10, 1986, "Seabrook Station Technical Specification Improvement Program", J. DeVincentis to T. M. Novak Subj ect :

Seabrook HVAC Charcoal Filters Fire Protection

Dear Sir:

During recent discussions with the Staf f, we agreed to revise the l

Fire Hazards Analyses with regards to Seabrook Station's charcoal filters.

During these discussions, it was agreed that the following analyses methodology would be used.

We also believe that this is responsive to the Staff's concerns in Reference (b).

Individual charcoal fire models will be developed for charcoal filters EAH-F-9,69, FAH-F-41,74, CAH-F-8, PAH-F-16, and CAP-F-40.

These models will consider ignition of a specified area of a charcoal cell and the burning cells af fect on adjacent cells. Propagation of the fire and heat transfer will be evaluated to determine the charcoal filters affects on structures and safe shutdown equipment.

Burning affects will be looked at under forced ventilation (limited in time to shutdown of fans) and under natural circulation until the charcoal filter box can be cooled by hose streams provided by the fire brigade.

f!Lo )p 8609220343 860917 PDR ADOCK 05000443 o

F PDR TI

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Seabrook Station Construction Field Office. P.O. Box 700. Seabrook, NH O3874

3 United' States Nuclear Regulatory Commission SBN-1193

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-Attention:

Mr. Vincent S. Noonan -

Page 2 We will provide the results of this analysis by October 10, 1986.

In addition, we will also supply the markup of Seabrook's Fire Protec-tion ProgramL Evaluation and Comparison to BTP APCSB 9.5-1, Appendix A and Fire Protection of Safe Shutdown Capability (10CFR50, Appendix R)-

Reports.

These reports will be formally updated in November,1986.

Along with our submittal in October will be a schedule of any plant modifications needed to support our analysis.

If the revisions to the fire detection system associated with these filters are not installed prior to issuance of the low power license, we will commit to a surveillance of the filters. The surveillance will be the same as in Technical Requirement 12, transmitted in Reference (c), for inoperable detection system.

In any case, all modifications will be scheduled for completion prior to exceeding five percent power.

Very truly yours, w/

John DeVincentis Director of. Engineering cc: Atomic Safety and Licensing Board Service List

Patsr J. Mathtwa, Maysr Dic a Currcn, Ecquira City H211 H:rmon & Weics 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 i

U.S. Nuclear Regulatory Commission Boston, MA 02110 Tenth Floor Washington, DC 20555 Calvin A. Canney City Manager

_ Robert A. Backus, Enquire City Hall 116 Lowell Street 126 Daniel Street Portsmouth, NH 03801 P.O. Box 516 Manchester, NH 03105 Stephen E. Merrill, Esquire Philip Ahrens, Esquire Attorney General Assistant Attorney General George Dana Bisbee, Esquire Department of The Attorney General Assistant 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'a Office Kennsington, 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 Board of Selectmen U.S. Senate Washington, DC 20510 Town Hall - Friend Street (ATTN: Tom Burack)

Amesbury, MA 01913 Senator Gordon J. Humphrey

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Richard A. Hampe, Eng.

1 Pillsbury Street Hampe and McNicholas 35 Pleasant Street Concord, NH 03301 Concord, NH 03301 (ATTN: Nerb Boynton)

Thomas F. Powers, III H. Joseph Flynn, Esquire Office of General Counsel Town Manager Federal Emergency Management Agency Town of Exeter i

500 C Street, SW 10 Front Street Exeter, NH 03833 washington, DC 20472 Brentwood Board of Selectmen Paul McEachern, Esquire Matthew T. Brock, Esquire RFD Dalton Road Brentwood, NH 03833 Shaines & McEachern 25 Maplewood Avenue Gary W. Holmes, Esq.

P.O. Box 360 Holmes & Ells Portsmouth, NH 03801 47 Winnacunnet Ro'ad Hampton, NH 03842 Robert Carrigg o

Town Office i

Mr. Ed Thomas Atlantic Avenue FEMA Region 1 North Hampton, NH 03862 442 John W. McCormack PO & Courthouse Boston, MA 02109

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