ML20090M617

Requests Exemption from 10CFR50,App R,Section III.G.2.b Re Fire Protection of Safe Shutdown Capability for Steam Tunnel.Request Results from Ongoing Resurvey of Reactor Bldg in Response to IE Insp Rept 50-271/83-26

ML20090M617
Person / Time
Site:	Vermont Yankee
Issue date:	05/21/1984
From:	Burke R VERMONT YANKEE NUCLEAR POWER CORP.
To:	Harold Denton Office of Nuclear Reactor Regulation
References
FVY-84-49, NUDOCS 8405290099
Download: ML20090M617 (3)

Text

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e VERMONT YANKEE NUCLEAR POWER CORPORATION

. FVY 84-49

. RD 5, Box 169. Ferry Road, Brattleboro, VT 05301 REPLY TO-y ENGINEERING OFFICE 1671 WORCESTER ROAD

• FRAMINGHAM, MASSACHUSETTS 01701 e TELEPHONE 617-872-6100 May 21,1984 U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Attention: Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation

References:

a) License No. DPR-28 (Docket No. 50/271) b) Letter, VYNPC to USNRC, FVY 84-24, dated 3/14/84 c) Letter, USNRC to VYNPC, Inspection Report 50-271/83-26, dated 11/2/83

Subject:

Request for Exemption - 10CFR Part 50, Appendix R, Fire Protection Program for Nuclear Power Facilities Operating Prior to January 1, 1979 In accordance with the provisions of 10CFR Part 50.12, Vermont Yankee Nuclear Power Corporation hereby requests the enclosed exemption from the i requirements of 10CFR Part-50, Appendix R,Section III.G, Fire Protection of Safe Shutdown Capability. l 4

l As discussed in Reference b), this exemption request results from our l ongoing resurvey of our Reactor Building initiated in response to I&E Inspection l Report 50-271/83-26 (Reference c). As of this date, our resurvey is continuing and may result in the need for additional exemption requests or the need to l supplement the existing requests.

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- U.S. Nuclear'R:gulatory Commission May 21, 1984 Page 2 VEHMONT YANKEE NUCLEAR POWER CORPORATION We trust that the enclosed exemption request is deemed acceptable; however, should you have any questions regarding this matter, please contact us.

Very truly yours, VERMONT YANKEE NUCLEAR POWER CORPORATION W.

Richard W. Burke Operations Support Manager WPM /dm cc: U.S. Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406 Attn: Dr. Thomas E. Murley STATE OF VERMONT ss WINDHAM COUNTY Then personally appeared before me, Richard W. Burke, who, being duly l sworn, did state that he is Operations Support Manager of Vermont Yankee Nuclear l Power Corporation, that he is duly authorized to execute and file the foregoing document in the name and on the behalf of Vermont Yankee Nuclear Power -

Corporation and that the statements therein are true to the best of his knowledg. gAplief.

$_ f, Diane M. McCue i Notary Public NOTARY My Commission Expires February 10, 1987 I

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VERMONTYANKEEEXEMPTIONRE0VESTF]p@i 10CFR PART 50, APPENDIX R Steam Tunnel Vermont Yankee requests exemption from the provisions of Section III.G.2.b for the steam tunnel. Specifically, exemotion is requested from the requirement to have redundant trains of equipment separated by a horizontal distance of 20 feet with no intervening fire hazards or combustibles, with fire detection and an automatic suppression system installed in the area.

The technical basis for this exemption request is as follows:

This area contains the steam lines to the High Pressure Coolant Injection (HPCI) and Reactor Core Isolation Cooling (RCIC) Systems. An all-encompassing fire could disable these steam lines by closing the RCIC and HPCI Motor Operated Valves. If this were to happen, safe shutdown is provided and achieved by using an SRV and one of two core spray pumps or any one of four RHR pumps as a reactor makeup source.

The tunnel is an enclosed concrete room with a steel entrance door and access panel. There is high temperature detection, set for 2120F, whose purpose is to detect steam leaks. This would also quickly detect any fire.

Due to the congested space, high temperature and high radiation during operation, no combustibles could be stored here.

We believe thct the public-health and safety is protected in a fashion equivalent to that resulting from compliance with the technical requirements of Section III.G.2.h of Appendix R to have detection and automatic suppression installed between redundant trains of equipment separated by a horizontal distance of 20 feet with no intervening combustibles of fire hazards.

Therefore, we request an exemption from the requirements of III.G.2.b for the Steam Tunnel.

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