ML20154P534

Forwards LERs88-021 & 88-022

ML20154P534
Person / Time
Site:	Cooper
Issue date:	09/26/1988
From:	Horn G NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
Shared Package
ML20154P538	List: 05000298/LER-1988-021, :on 880525,reactor Scram & Group 1 & 7 Isolations Occurred.Caused by Signal Spikes on All Four Main Steam Line Radiation Monitors Due to Electrical Noise.Plant Stabilized & Separate Chassis Ground Added to Each Monitor 05000298/LER-1988-022, :on 880827,while Surveillance Testing of HPCI, Sys Revealed That Rated Flow Conditions Could Not Be Achieved within Design Basis Time Limit of 25 Seconds.Caused by Malfunctioning EGM Control Box.Spare Box Installed ML20154P534
References
CNSS880540, NUDOCS 8810030090
Download: ML20154P534 (1)

Text

_

i l

l h

COOPER NUCLEAR STATION Nebraska Public Power District

" '

• i'." *altWl*".^ii'" "'"

i

~CNSS880540 September 26, 1988 U. S. Nuclear Regulatory Commission Document Control Desk Washington, D. C. 20555 centlement Cooper Nuclear Station Licensee Event Reports88-021 and 88-022 are forwarded as attachments to this letter.

Sincerely.

44, k

iforn Division Manager of Nuclear Operations GRHaya Attachments cca R. D. Martin L. C. Kunc1 R. E. Wilbur V. L. Wolstenholm G. A. Trevors IhTO Records Center ANI Library NRC Resident Inspector R. J. Singer CNS Training CNS Quality Assurance 8910030090 080926

~

hgA PDR ADOCK 05000298 s

PNV j

/

______-_.-____4.__.