ML20236B890
| ML20236B890 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 10/20/1987 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML20236B869 | List: |
| References | |
| NUDOCS 8710260391 | |
| Download: ML20236B890 (1) | |
Text
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o4 UNITED STATES
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'7 NUCLEAR REGULATORY COMMISSION 3
WA$mNGTON, D. C. 20555
%; a....j SUPPLEMENTAL SAFETY EVALUATION ON COOPER NUCLEAR STATION
' COMPLIANCE WITH ATWS RULE 10 CFR 50,62-i RELATING TO ALTERNATP ROD INSERTION SYSTEM NEBRASKA PUBLIC POWER DISTRICT DOCKET N0.-50-298 L
- 1. 0 INTRODUCTION On September 23,1987, the_ staff issued its Safety Evaluation (SE) for its evaluation of the Alternate Rod Insertion (ARI) system proposed for installation in the Cooper Nuclear. Station during the 1988 refueling
- j outage.
The SE was based on information provided by the licensee in~its letters dated October. 14, 1985 and April 8, 1987, and in a telecopy provided on August 4,-
1987.
In the October 14 letter, the licensee _ stated that the ARI' solenoid valves would be provided with control room position i
indication.
However, in a letter dated October 13, 1987 the licensee requested staff concurrence to provide position indication at another location outside the control room (auxiliary relay room) instead of in the control ~ room.
i 2.0 EVALUATION The staff's September 23, 1987 SE acknowledged the licensee's original plans to provide control room solenoid valve position indication.
- However, i
such a feature is not a requirement of 10 CFR 50.62 or staff positions related to implementation of that rule.
Control room ARI solenoid valve i
position indication would not be necessary in event of an ATWS, since l
actual control rod position indication is provided in the control room.
Valve position indication in the Auxiliary Relay Room will facilitate surveillance testing of the ARI system.
j
3.0 CONCLUSION
I The licensee's plans for relocating ARI position indication out of the control room to another location in the control building are acceptable.
Principal Contributor:
W. Long October 20, 1987 Dated:
8710260391 871020 PDR ADOCK 05000298 p