ML20211H407

Final Deficiency Rept (CDR 85-00-07) Re HVAC Design Defect. Initially Reported on 850409.Fifteen-ton Chiller Unit Added in Equipment Vault Stairways & Electrical Area Above

ML20211H407
Person / Time
Site:	Seabrook
Issue date:	06/06/1986
From:	Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
(CDR-85--7), (CDR-85-00-07), SBN-1097, NUDOCS 8606230511
Download: ML20211H407 (3)

Text

f v [. SEABROOK STATION Enginsaring Office e) (A June 6, 1986 Put2c Service of New Hampshire SBN- 1097 T.F. Q2.2.2 NEW HAMPSHIRE YANKEE DIVISION 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 April 9,1985, V. L. Killpack (YAEC) to R. Barkley (NRC Region I)

(c) PSNH Letter (SBN-838), dated July 9, 1985, " Interim HVAC Design", J. DeVincentis

~

10CFR50.55(e) Report:

to R. W. Starostecki

Subject:

Final 10CFR50.55(e): HVAC Design (CDR 85-00-07)

Dear Sir:

In Reference (b), we reported a 10CFR50.55(e) regarding a HVAC design deficiency. As indicated in Reference (c), the HVAC design deficiency had been identified while performing a normal reverifi-cation of Environmental Qualification input parameters. As a result, changes in HVAC design were required so that the operational environment would not be more severe than that used in the test and qualification of safety-related systems and components.

The following corrective actions [ reference (c)] necessary to maintain systems and components in the specific environments have been completed:

Areas Affected:

1. Equipment vault stariways and electrical area above - Added 15 ton chiller unit which supplies one air conditioner in each of the three areas.

2. Control Building Train A Switchgear Room and Train B Tunnel -

Increase once-through ventilation air flow by modifications to existing fans.

8606230511.860606 PDR ADOCK 05000443-S PDR Seabrook Station Construction Field Office P.O. Box 700 Seabrook, NH O3874 ]A~ U l ijO

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United States Nuclotr Rrgulatory Consission Attention: Mr. Richard W. Starostecki Page 2

3. Mechanical penetrations area - Modified duct work to direct ,

ventilation to two equipment areas (approximately 1,000 CFM each).

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4. Primary Auxiliary Building - Modified cooling system to the ventilation system (approximately 225 tons) for operation when outside air is above 75'F and add duct work for distribution of air to equipment.

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

Very truly yours, John DeVincentis Director of Engineering I

cc: Atomic Safety and Licensing Board Service List 6

Director, Of fice Inspection and Enforcement United States Nuclear Regulatory Commission Washington, DC 20555 4

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Dicn3 Curran Esquire Cs1vis A. Cann g ,

N:rmon & Weiss City Manascr l 2001 8. Street, N.W. City Hall l Suite 430 126 Daniel Street Washington, D.C. 20009 - l Portsmouth, EN 03801 '

Sherwin E. Turk, Esq. Stephen E. Norrill, Esquire '

Office of the Executive Legal Director Attorney General l f 5.3. Nuclear Regulatory Commission George Dana Siebee, Esquire l Tenth Floor Assistant Attorney General  !

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! Senator Cordon J. Musphrey N. Joseph Flynn, Esquire U.S. Senate Office of General Counsel ,

I Washington, DC 20510 Federal Smergency Management Agencyg I

(ATTN: Tom Burack) 500 C Street, W Washington, DC 20472 E1 chard A. Nampe Esq.

Nampe and Nc51cholas Paul McEachern Esqules 35 Pleasant Street Matthew T. Brock, Esquire Concord, MN 03301 Shatnes & NcBachern 25 Naplewood Avenus Donald E. Chick P.O. Box 360 Town Manager Portsmouth, NN 03401 Town of Exeter 10 Front Street Gary W. Holmes, Esq.

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RFD Dalton Road Brentwood, WM 03833 Nr. Ed Thomas FINA Region I Peter J. Mathews, Nayor 442 John W. McConneck PO & Courthouse City Hall Boston, NA 02109 Newburyport, MA 01950 Stanley W. Knowles, Chairman Board of Selectmen P.O. Box 710 North Hampton. NH 03862

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