ML20236T932
| ML20236T932 | |
| Person / Time | |
|---|---|
| Site: | Byron, Comanche Peak  |
| Issue date: | 10/27/1987 |
| From: | Querio R COMMONWEALTH EDISON CO. |
| To: | Davis A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| BYRON-87-1045, NUDOCS 8712020175 | |
| Download: ML20236T932 (1) | |
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-October 27, 1987
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BYRON 87-1045 Mr. A. Bert Davis Regional Administrator
>l Region 3 U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glenn Ellyn, Illinois 60137 l
Dear Sir:
l l
This report is being submitted in accordance withvByrdrEStation Unit 2' I
Operating License, NPF-60, Appendix A, Technical Specification.3.S.3 Action C.
l This report addresses a Train A Safety Injection on Unit 2 during a performance of a Solid State Protection System Bi-Monthly surveillance.
On August 31, 1987, while in Hot Standby, Unit 2 shift personnel were performing a Bi-Monthly Surveillance of the Solid State Protection System.
The Train A Output Cabinet Mode Selector Switch was not placed in the test position, resulting in a Train A Safety Injection..The.cause for this event j
was cognitive personnel error by not placing the Mode Selector switch in test. High head injection occurred through valve 2SI8801A, pressurizer level increased from twenty-five.to forty percent and RCS pressure increased from l
three hundred forty five to three hundred fifty five pounds.
l Emergency procedure 2BEP-0 was entered upon receiving the Safety Injection signal and exited when plant conditions.were stabilized. Licensing Event Report (LER) 87-016-00; Docket No. 50-455 also covers this event.
l This is the first safety injection that has occurred-on Byron Unit Two.
l R. E. Querio Station Manager Byron Nuclear Power Station REQ /RC/bf (0064z)
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cc: P. Brockman, NRC Senior Resident Inspector U. S..NRC Document Control Desk, Washington D.C.
INPO Record Center CECO Distribution List R. Williams
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4 0 LOCT 2 81987 I
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