05000277/LER-1982-013

LER 82-013/03L-0:on 820608,while Filling Diesel Generator Carbon Dioxide Fire Suppression Sys Storage Tank,Tank Pressure Dropped Below Tech Spec Limit.Caused by Venting Tank Vapor Space to Atmosphere Instead of Delivery Truck

ML20055B049
Person / Time
Site:	Peach Bottom
Issue date:	07/08/1982
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-82-013-03L, LER-82-13-3L, NUDOCS 8207200297
Download: ML20055B049 (1)

LER-2082-013,

Event date:
Report date:
2772082013R00 - NRC Website

text

Me, L C, Baynes, Director No. 2-E2-13/03L-o Office cf Inspootion & EnforOsment, Begion I

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U.S. Nuclear Begulatory Co d esion 631 Park Avenue King of Prussia, PA 1%o6

Dear Mr. Baynes:

This IIR concerns the drop in pressure of the diesel concrator carboredioxide fire supression system storage tank below the limit specified in Tech. Spec. 3.14.B.la U. S. NUCLE AR REGULATORY COMMIS$80N LICENSEE EVENT REPORT CoNTRot eLOCn: l l l l l l .l@

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EVENT DESCRIPTION AND PRO.ABLE CONSEQUENCES o 2 lDuring power operation, while 11ing the diesel generator carbon I gidioxide fire suppress ~ ion systen storage tank, the tank pressure drop; cd i o . gbelow the limit specified in Tech. Spec. 3.14.n3.a. A fire watch was l g gposted until the tank pressure was within Tech. Spec. limits. Sufficient l o e Icarbon dioxide was available to deliver most of the design voluae ux.n I o , lautonatic actuation; nanual actuation capability was available to I oa Ideliver the balance. t

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{3b_,,jg [26Z_j@ l0l0l0lTl y@ yg y@ l::pl5plg 3 40 41 42 43 44 er cAUSE DESCRIPTION AND CORRECTIVE ACTIONS i o p;hile adding licuid carbon dioxide to the storace tank, the tank vat or I

, space was vented to atnosphere rather than the celivery truck causing ,

the tank pressure to drop. The pressure was allowed to build to wituin ,

, , Tech. Spec. limits. Procedures for filling carbon dioxide storage tanks;

, , ,will be discussed at the next Shift Fire Protection nceting. ,

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