05000000/LER-1986-021, Partially Deleted LER 86-021-00:on 860911,vital Area Doors Failed to Alarm When Tested During Surveillance.Caused by Failure to Report Door Transactions to Host Computer.Central Procesing Unit Board Replaced
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| Report date: | |
| 0001986021R00 - NRC Website | |
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roximate hours on 9/11/86 vital area doors fail to ala when es e urin the oor surveillance.
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LICENSEE EVENT REPORT (LER) TEXT CONTINUATION
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Identification of Occurrences i
At approximately 0126 h
.on 9/11/86 vital area door ailed to I
alarm when tested.
Doo 1
i Effects Loss of alarm surveillance to two vital area doors.
i Description of Apparent Cause il p
The-as not l
reporting door transactions to t e os
, u er.
communication between the lI and th h st had not failed however, there wa pparently a failure of the[
o the host.
Corrective Action
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HARTFORD. CONNECTICUT 06141-0270 N _ [,,., A (203) 666-6911 w.m w w.a sm a<,, cwm, l
September 15, 1986 MP-9495 Docket No. 50-245 Docket No. 50-336 Docket No. 50-423 Mr. Richard W. Starostecki, Director Division of Project and Resident Programs NRC Region I
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U.S. Nuclear Regulatory Commission l
631 Park Avenue l
King of Prussia, Pennsylvania 19406
Dear Mr. Starostecki:
This letter forwards a report of a security related event pursuant to the requirements of 10CFR part 73, paragraph 73.71(c).
Very truly yours, i
NORTHEAST NUCLEAR ENERGY COMPANY ke3.s,
r Wayne D. Roiberg Station Superintendent Millstone Nuclear Power Station WDR/PLW:cjh
Attachment:
Report of Security Event 86-021-00 cc:
Director of Inspection and Enforcement U.S. Nuclear Regulatory Commission, Washington, D.C.
20555
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