05000278/LER-1982-011

LER 82-011/03L-0:on 820620,fuse on Positive Leg to Transmitter Circuit Board Blew Causing Downscale Failure of Drywell 0-70 Psig Pressure Recorder.Caused by Intentional Ground Installed on Positive of Transmitter.Fuse Replaced

ML20055B633
Person / Time
Site:	Peach Bottom
Issue date:	07/13/1982
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-82-011-03L, LER-82-11-3L, NUDOCS 8207220570
Download: ML20055B633 (1)

LER-2082-011,

Event date:
Report date:
2782082011R00 - NRC Website

text

Mr. R. C. H2ynos No. 3-82-ll/3L Ad31nistrator U.S. Nuclear Rsgulatory Commission 631 Park Avenue King of Prussia. PA 19406

Dear Mr. Haynes:

This LER concerns the failure of a drywell pressure transmitter.

Applicable Tech Spec is 4.2.F.

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S OO 80 i s l 2l 01 si 274 Gl75017REpoRToATE l 11, i al 21@ 80 I, 8 80 68 ooCKET NUMBER EVENT oATE EVENT DESCRIPTION AND PRO 9aBLE CONSEOVENCES h gl While restoring power supply to service following a loss of power g gi test the fuse on the positive leg to the transmitter circuit board g o 4 l blew causing a downscale failure of the drywell 0-70 PSIG pressure l o s l recorder. The redundant 0-70 PSIG pressure recorder was verified g oe I operable. Applicable Tech Spec is 4.2.F. g o r I [

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, I The fuse was replaced and the recorder immediately returned to I i 3 I servire. A modification is in progress to change the transmitter I i 4 I circuit board to eliminate the positive around.  !

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