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) | |
Text
-- _ _ - - - -
g
- } ByronC:mm:nw Nucleagtion Edison
(] '
g C
- 4450 North German Church Rord PRIORITY ROUTIllG Byron, Illinois 61010 q est lpd p
MEEIC of tG & p yy u of>R S. A A
-October 27, 1987
% \
,w (ILfhd2 LTR: 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)
]
cc: P. Brockman, NRC Senior Resident Inspector U. S..NRC Document Control Desk, Washington D.C.
INPO Record Center CECO Distribution List .
R. Williams J. Cook
/hy[ 1 4 0 :
8712O20175 871027 f:~I I PDR S
ADOCK 05000445b LOCT 2 81987 i PLR @
= _ _ _ _ _ _ _ _ _ _ - - -
1TQ
. _r w - _- >
]