05000277/LER-1982-035, Forwards Revised LER 82-035/01X-1.Revised Detailed Event Analysis Encl

Forwards Revised LER 82-035/01X-1.Revised Detailed Event Analysis Encl

ML20064E865
Person / Time
Site:	Peach Bottom
Issue date:	12/08/1982
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20064E855	List: 05000277/LER-1982-035, Forwards Revised LER 82-035/01X-1.Revised Detailed Event Analysis Encl ML20064E848
References
NUDOCS 8301060155
Download: ML20064E865 (3)

LER-1982-035, Forwards Revised LER 82-035/01X-1.Revised Detailed Event Analysis Encl

Event date:
Report date:
2771982035R00 - NRC Website

text

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PHILADELPHIA ELECTRIC COMPANY 23O1 MARKET STREET P.O. BOX 8099 PHILADELPHI A. PA.19101 8215)841-4000 December 8, 1982 Mr. R. C. Haynes, Administrator Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406 SUBJECT: LICENSEE EVENT REPORT NARRATIVE DESCRIPTION

Dear Mr. Haynes:

The following occurrence was reported to Mr. R. Blough, Region I, United States Nuclear Regulatory Commission on October 24, 1982.

Reference:

Docket No. 50-277/278

[

Report No.:

2-82-35/lX-1 Event Date:

October 21, 1982 Report Date:

December 8, 1982 Facility:

Peach Bottom Atomic Power Station RD #1, Box 208, Delta, PA 17314 Technical Specification Reference:

Tech. Specs. 3.14.B.3 and 3.14.B.4 require, among other things, that a firewatch be posted and a report filed pursuant to Tech.

Spec. 6.9.2 if the pressure in the Cardox Storage Tank is below 280 psig when the Diesels are required to be operable.

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k Mr. R. C. Haynes Page 2 Description of the Event At about 4 p.m. on October 21, 1982, it was discovered that the Diesel Generator Cardox Tank pressure was below the technical specification limit of 280 psi.

Immediate Corrective Action

As required by Technical Specifications, a firewatch was posted and remained on location until the pressure had returned to within Tech. Spec. limits.

Consequenc-che Event The quantity of carbon dioxide available exceeded Tech. Spec.

requirement of 2?.00 pounds.

The pressure in the tank was 260 psig or seven percent below the Tech. Spec. limit of 280 psi.

The pressure in'the tank would have been sufficient for system dctivation had an initiation signal been received.

The amount of time which elapsed during the period in which the pressure was below-the Tech. Spec. limit and no firewatch was posted was approximately six and one-half hours.

~Cause of'the Event

• The.Cardox.syntem was removed from service and blocked for minor maintenance' activities at 8:35 a.m. on October 21.

As required, a firewatch was' posted.

Maintenance work was completed and the blocking cleared at approximately 9:35 a.m.

At this time, the firewatch was mistakenly released by the operator who had cleared the mechanical blocking.

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.Page 3 Mr.'R. C.~Haynes

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fictiori Taken to Prevent Recurtr'nce Re'spon ible operator was counsalled on the requirement for a

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firevatch.

This incident has been discussed during_ upcoming shift meeting.

very truly yours,

/mru S4 A

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M.

7. Cooney Superintendent Generation Division - Nuclear cc:

Mr. Victor Stcllo, Director Office of Inspection & Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 Mr. Norman M. Haller, Director R. Blough Office of Management & Program Analysis Site Inspector U.S. Nuclear Regulatory Commission P.O. Box 399 Washington, DC 20555 i

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