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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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
ML20238E795
Person / Time
Site: Millstone, 05000000
Issue date: 09/15/1986
From: Romberg W, Weekley P
NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
To: Starostecki R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20238E403 List:
References
FOIA-87-410 LER-86-021-02, LER-86-21-2, MP-9495, NUDOCS 8709150213
Download: ML20238E795 (3)
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LER-2086-021, 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
Event date:
Report date:
0002086021R00 - NRC Website
v • d • e

text

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roximate hours on 9/11/86 vital area doors fail to ala when es e urin the oor surveillance. Both doors alle g 91 g 3 870910

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I Identification of Occurrences i

At approximately 0126 h .on 9/11/86 vital area door ailed to '

I alarm when tested. Doo  ;

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Effects Loss of alarm surveillance to two vital area doors.

i Description of Apparent Cause il p

The- as not reporting door transactions to t e os and th h st had not failed however, there wa

, u er. communication between the lI l pparently a failure of the[

o the host.

Corrective Action

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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 )

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 r ke3.s ,

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 M.

manes. m lpl

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