ML20054C255

Ro:On 820416,during Startup of Reactor,Period Circuits of Wide Range Log N Channel Failed So as to Provide No Period Info to Operator or Scram Circuits,Resulting in Shutdown of Reactor

ML20054C255
Person / Time
Site:	Rhode Island Atomic Energy Commission
Issue date:	04/16/1982
From:	Dimeglio A RHODE ISLAND, STATE OF
To:	Office of Nuclear Reactor Regulation
References
NUDOCS 8204200277
Download: ML20054C255 (1)

Text

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t j STATE OF RHODE ISLAND AND PROVIDENCE PLANTATIONS RHODE ISLAND ATOMIC ENERGY COMMISSION '" !! ' t 9P .

Nuclear Science Center South Terry Road /

7 [' . . .g k.9 Narragansett, R. 1.02882 /  :. 'f M

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gzqw n,9?l1,v ,,, p , R April 16, 1982 (4

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W. p U. S. Nuclear Regulatory Commission ' '

Attn: Director Division of Reactor Licensing Washington, DC 20555 License R-95 Docket 50-193

Dear Sir:

Pursuant to a condition in License R-95, you are hereby notified that on April 16, 1982 about 10:30 a.m. during startup of the reactor, the period circuits of the wide range log N channel failed so as to provide no period information to the operator or to the scram circuits. The operator, real-

• izing he had log N information and no period information, shut down the reactor and notified the senior operator. At the time the reactor was at very low power. There were no simultaneous failures in other circuits.

This information was telephoned to Mr. Robert Gallo, Region 1, Nuclear Regulatory Commission at about 10:45 a.m.

V 7 truly yours, s

Um A. Francis DiMeglio Director AFD:cd ,

cc: U. S. Nuclear Regulatory Commission Region 1 -

631 Park Avenue King of Prussia, PA 19406 ,

Rhode Island Atomic Energy Commission O

Reactor Utilization Committee g

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