05000000/LER-1986-004-01, Partially Deleted LER 86-004-01:on 860204,loss of Dynamic Reporting of Alarm Surveillance Occurred.Cause Withheld. Computer Svcs Personnel Will Continue to Monitor Sys for Indicators of Cause: Difference between revisions

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#REDIRECT [[05000000/LER-1986-004, Partially Deleted LER 86-004-00:on 860204,loss of Dynamic Reporting of Alarm Surveillance Occurred.Caused by Malfunction.Computer Svcs Personnel Will Monitor Sys for Indicators as to Cause]]
{{Adams
| number = ML20238E709
| issue date = 06/11/1986
| title = Partially Deleted LER 86-004-01:on 860204,loss of Dynamic Reporting of Alarm Surveillance Occurred.Cause Withheld. Computer Svcs Personnel Will Continue to Monitor Sys for Indicators of Cause
| author name = Romberg W, Weekley P
| author affiliation = NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
| addressee name = Starostecki R
| addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
| docket = 05000000, 05000245
| license number =
| contact person =
| case reference number = FOIA-87-410
| document report number = LER-86-004-01, LER-86-4-1, MP-9170, NUDOCS 8709150150
| package number = ML20238E403
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 3
}}
{{LER
| Title = Partially Deleted LER 86-004-01:on 860204,loss of Dynamic Reporting of Alarm Surveillance Occurred.Cause Withheld. Computer Svcs Personnel Will Continue to Monitor Sys for Indicators of Cause
| Plant =
| Reporting criterion =
| Power level =
| Mode =
| Docket = 05000000
| LER year = 1986
| LER number = 4
| LER revision = 1
| Event date =
| Report date =
| ENS =
| abstract =
}}
 
=text=
{{#Wiki_filter:.
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W8 NUCL6 AA AlGULATORv Cotedist70se APPA0vtD ows 40 Stetties LICENSEE EVENT REPORT (LER) 8 ' * * " 8 ' *""
'''''"WU's't one Nuclear Power S tat ion - Unit 1 0 151010[oi21415 1 !OFI ()I 2 fif Lt 448 Temporary Loss of Dynamic Reporting of Alarm Surveillance t yt NT Daf t ISI Le m huust a esi a tPomi Datt 17) oTMan sacatrTits erv0Lvto tal MONTM oav vtam vtan H,O, g ',"*
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TMis atront is sueuiTito PunsvAwT to TMs meoviatuswTs os to can g terwe eu e,-e s== w ot)
 
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On February 4, 1986 at a roximately 1234 hours, th Both Unit 3 Security computers were halted and reb'ooted, but that di not correct the o
Computer Services personnel restored th a roximately 1308 hours the erio en t e system malfunctioned compensator measures
:- a
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LICENSEE EVENT REPORT (LER) TEXT CONTINUATION Anaovio m wo vw-4 >
u mis av =
F Acatet ? hAs.
00Ca t ? WUMe t a Gi Lf R 8/UM84 A (Si Pact (*
" R ' M '.' '
:- EL*J.'
'saa Millstone Nuclear Power Station Unit 1 o l5 j o l0 lo l2 l 4l5 8l6 0l0l 4 0l1 0l2 0F 0l2 m,-.. %, : ma.c % 2mu., nn Identification Of Occurrence Between 1234 hours and 1308 hours on February 4, 1986 the
<]
Effects Of Events 1234 hours until 1308 hours on February 4, 1986 a temporary loss of dynamic reporting of alarm activity was experienced.
Description Of Compensatory Measures j
Designation Of Apparent Cause
 
==Corrective Action==
1.
A installed.
2.
During a reboot of the system pertinent data necessary to diagnose the v6s lost. Computer Services personnel will continue to monitor t or indicators as to the cause of the problem.
 
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NORTHEAST UTILITIES
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H ARTFORD. CONNECTICUT 061410270 owm att c u a c-.
(203) 666-6911 i
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i June 11, 1986 MP-9170 4
Docket No. 50-245 Docket No. 50-336 Docket No. 50-423 Mr. Richard W. Starostecki, Director Division of Project and hesident Programs NRC Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of frussia, Pennsylvania 19406
 
==Dear Mr. Starostecki:==
This letter forwards an updated report of a security related event pursuant to the requirements of 10CFR part 73, paragraph 73.7)(c).
Very truly yours, i
NORTHEAST NUCLEAR ENERGY COMPANY 0f Wayne D. Ro rg Station Super endent Millstone Nuclear Power Station WDR/LPB:mo
 
==Attachment:==
Report of Security Event 86-004-01 cc: Director of Inspection and Enforcement U.S. Nuclear Regulatory Commission, Washington, D.C.
20555 Tp amme*******
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}}
 
{{LER-Nav}}

Latest revision as of 18:13, 22 May 2025

Partially Deleted LER 86-004-01:on 860204,loss of Dynamic Reporting of Alarm Surveillance Occurred.Cause Withheld. Computer Svcs Personnel Will Continue to Monitor Sys for Indicators of Cause
ML20238E709
Person / Time
Site: 05000000, Millstone
Issue date: 06/11/1986
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-86-004-01, LER-86-4-1, MP-9170, NUDOCS 8709150150
Download: ML20238E709 (3)


LER-1986-004, Partially Deleted LER 86-004-01:on 860204,loss of Dynamic Reporting of Alarm Surveillance Occurred.Cause Withheld. Computer Svcs Personnel Will Continue to Monitor Sys for Indicators of Cause
Event date:
Report date:
0001986004R01 - NRC Website

text

.

h RC l'*n m aos e

W8 NUCL6 AA AlGULATORv Cotedist70se APPA0vtD ows 40 Stetties LICENSEE EVENT REPORT (LER) 8 ' * * " 8 ' *""

"WU's't one Nuclear Power S tat ion - Unit 1 0 151010[oi21415 1 !OFI ()I 2 fif Lt 448 Temporary Loss of Dynamic Reporting of Alarm Surveillance t yt NT Daf t ISI Le m huust a esi a tPomi Datt 17) oTMan sacatrTits erv0Lvto tal MONTM oav vtam vtan H,O, g ',"*

"'f,$

womtw OAv vtam

'aci6syv **=es DoCast Nvuttms Millstone Unit 2 ogs;o;oloi 33i i 6 0l2 0l4 86 8 l6 0l0 l4 0 l1 0l6 1l1 8 l6 Millstone Unit 3 o isio ;o i oi 4 l2 i 3

~

p,,,,,,,,

TMis atront is sueuiTito PunsvAwT to TMs meoviatuswTs os to can g terwe eu e,-e s== w ot)

== E

  • N

,o m.,

n ai,i e n non i n.vini 1l O 0 n owimm so ni.>m so nan:H.i i

n.os wimm 3

n.mai n,

.0 misim sonw>aH,

oT s Mt is,uw.

4.,

..e re u. ~nc un n m.,mim oc ni.umm m ni.nsH.ew naar 20 40sieHiHwi 60.73elGHat so 7sisiGHvistel 30 408 HIHe) e0 73m)Gilmi to 73telGHal LICENsit CONT ACT 80A TMis Lim (121 NAME YtLtPMoht hvusta Patricia L. Weekley, Security Supervisor 2l013 41414l-14131219 CowkIT104E Liht poa EACM C0wo4t8tT PalLUpt Dt0 Cal 8tD in THis Alposr? ttai CAvst SYSTEM COM*oNENT WQg8aC p {

,t Cault svFTEM COM*C%ENT

"* "y',"

,T,8 8,L 8 a s R

y g X

I,A C,P,U, M, 4, 0, 3 N

i l

i l l I I I I

i 1 !

1 l 1 surettasswTat aeront Ex*Ectso ti44 ucNTw cav vtaa e

zu.. u.o.

(

  • 6 rsere re wen tsortfro susartsvos cart >

No l

l l

I a,e,a-,,,,....-......-..-.,-o.,

On February 4, 1986 at a roximately 1234 hours0.0143 days <br />0.343 hours <br />0.00204 weeks <br />4.69537e-4 months <br />, th Both Unit 3 Security computers were halted and reb'ooted, but that di not correct the o

Computer Services personnel restored th a roximately 1308 hours0.0151 days <br />0.363 hours <br />0.00216 weeks <br />4.97694e-4 months <br /> the erio en t e system malfunctioned compensator measures

- a

~,a WILL I Al197-4,0 PDR haC Fes* see

't 4)I

LICENSEE EVENT REPORT (LER) TEXT CONTINUATION Anaovio m wo vw-4 >

u mis av =

F Acatet ? hAs.

00Ca t ? WUMe t a Gi Lf R 8/UM84 A (Si Pact (*

" R ' M '.' '

- EL*J.'

'saa Millstone Nuclear Power Station Unit 1 o l5 j o l0 lo l2 l 4l5 8l6 0l0l 4 0l1 0l2 0F 0l2 m,-.. %, : ma.c % 2mu., nn Identification Of Occurrence Between 1234 hours0.0143 days <br />0.343 hours <br />0.00204 weeks <br />4.69537e-4 months <br /> and 1308 hours0.0151 days <br />0.363 hours <br />0.00216 weeks <br />4.97694e-4 months <br /> on February 4, 1986 the

<]

Effects Of Events 1234 hours0.0143 days <br />0.343 hours <br />0.00204 weeks <br />4.69537e-4 months <br /> until 1308 hours0.0151 days <br />0.363 hours <br />0.00216 weeks <br />4.97694e-4 months <br /> on February 4, 1986 a temporary loss of dynamic reporting of alarm activity was experienced.

Description Of Compensatory Measures j

Designation Of Apparent Cause

Corrective Action

1.

A installed.

2.

During a reboot of the system pertinent data necessary to diagnose the v6s lost. Computer Services personnel will continue to monitor t or indicators as to the cause of the problem.

/

1 g

~

/ '"*

S* 'd'" S""'

S* '"a C ""*"

NORTHEAST UTILITIES

('

"**". 80X 270 w m.*c'ese wewoma "*'

s PO

$N UNU$'/j7", *'

H ARTFORD. CONNECTICUT 061410270 owm att c u a c-.

(203) 666-6911 i

g j

.ww w wea s. m w,, ewm, j

i June 11, 1986 MP-9170 4

Docket No. 50-245 Docket No. 50-336 Docket No. 50-423 Mr. Richard W. Starostecki, Director Division of Project and hesident Programs NRC Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of frussia, Pennsylvania 19406

Dear Mr. Starostecki:

This letter forwards an updated report of a security related event pursuant to the requirements of 10CFR part 73, paragraph 73.7)(c).

Very truly yours, i

NORTHEAST NUCLEAR ENERGY COMPANY 0f Wayne D. Ro rg Station Super endent Millstone Nuclear Power Station WDR/LPB:mo

Attachment:

Report of Security Event 86-004-01 cc: Director of Inspection and Enforcement U.S. Nuclear Regulatory Commission, Washington, D.C.

20555 Tp amme*******

esummesmessams**

cll