05000286/LER-1981-008, Forwards LER 81-008/01T-0.Detailed Event Analysis Encl

Forwards LER 81-008/01T-0.Detailed Event Analysis Encl

ML20033C948
Person / Time
Site:	Indian Point
Issue date:	11/23/1981
From:	Brons J POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20033C949	List: 05000286/LER-1981-008, Forwards LER 81-008/01T-0.Detailed Event Analysis Encl 05000286/LER-1981-008-01, /01T-0:on 811109,at Hot Shutdown,Two Manual Isolation Vlaves in Weld Channel & Containment Penetration Pressurizaiton Sys Were Closed.Caused by Administrative Error.Valves Opened
References
IP-FWG-15538, NUDOCS 8112040526
Download: ML20033C948 (2)

LER-1981-008, Forwards LER 81-008/01T-0.Detailed Event Analysis Encl

Event date:
Report date:
2861981008R00 - NRC Website

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POWER AUTHORITY OF THE STATE OF NEW YORK INDIAN POINT NO. 3 NUCLEAR POWER PLANT P. O. BOX 215 BUCHANAN. N Y.10511 TELEPHONE 914 739-8200 November 23, 1981 IP-FWG-15538

_g Docket No. 50-286

,M*g License No. DPR ' N r

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'9 II.

l Ronald C. Haynes Region 1 l$. DECS 1981-U. S. Nuclear Regulatory Commission i' u s. euurt 8mA""

631 Park Avenue 3, y King of Prussia, Pennsylvania 19406 Q',,

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Dear Mr. Haynes:

&l'g, The attached Licensee Event Report LER 81-008/0lT-0 is hereby submitted in accordance with the requirements of Technical Specification 6.9.1.

This event is of the type defined in 6.9.1.7.

(b) of the Technical Specification. Three copies of this letter and attachment are enclosed as required.

This constitutes the fourteen day report required by Technical Specifications and accompanies the twenty-four hour formal notification of November 10, 1981.

Very truly yours, [ff y 2 W hG John ro Resicfc t Manager FWG/bam cc: Director of Nuclear Reactor Regulation Attn: William Mcdonald, Director (3 Copies)

Office of Management Information & Program Control U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Office of Inspection and Enforcement (30 Copies) c/o Distribution Services Branch, DDC, ADM U. S. Nuclear Pegulatocy Commission Washington, D. C. 20555 Mr. George T. Berry Power Authority of the State of New York 10 Columbus Circle New York, New York 10019 Resident Inspector T. Rebelowski George Wilverding, NYO J. P. F,ayne, NYO James Davis (SRC), NYO fh Nuclear Safety Analysis Center g r, y Electric Power Research Institute 8112040526 811123 P. O. Box 10412 PDR ADOCK 05000286 Palo Alto, California 94303 S

PDR

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j ATTACHMENT 1 LER 81-008/0lT-0 Power Authority of the Docket No. 50-286 State of.New York j

i The plant was in the-hot. shutdown condition with-the Reactor Coolant System temperature at approximately 2500F.

i On November 9, 1981, it was observed that two manual isolation valves-on the Weld Channel and Containment Penetration Pressurization System (WCCPPS) were closed. These racks supply WCCPPS air to rthe electrical penetrations. As a result, the pressure on rack 12 decreased to approximately 37 psig while the pressure on rack 13 remained above the limit of 41 psig i

. identified in Technical Specification 3.3.D.l.

Upon verification of the problem, the Shift Supervisor immediately

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opened the valves, returning the WCCPPS to normal.

i The cause of the problem was determined to be administrative error, j

Several valves were isolated and tagged for maintenance on the UCCPPS as indicated on the Operating Order. Subsequently, it was determined that two additional valves were required to be closed. These two valves were isolated and tagged, but were inadvertently omitted from the Operatina Order. Therefore i

when the Operating Order was cleared, these valves remained closed. To prevent the repetition of this event, the internal procedures concerned with the tagging of equipment are being revised. Additionally, routine surveillance of valve position and pressure for WCCPPS racks 12 and 13 has i

been added to the NPO logsheets.

1 Performance and safety of the reactor were not affected by this incident.

i No similar events have occurred to date.

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