05000259/LER-1981-016, Updated LER 81-016/01T-1:on 810501,during Test,Fire Pump Automatic Start Logic Found Inoperable.Caused by Wiring Removed from Terminal Points in Main Relay Panel 52,during Mod of Panel.Permanent Wire Replaced.Work Plan Revised: Difference between revisions

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{{Adams
#REDIRECT [[05000259/LER-1981-016, Forwards LER 81-016/01T-0]]
| number = ML20004D566
| issue date = 06/05/1981
| title = Updated LER 81-016/01T-1:on 810501,during Test,Fire Pump Automatic Start Logic Found Inoperable.Caused by Wiring Removed from Terminal Points in Main Relay Panel 52,during Mod of Panel.Permanent Wire Replaced.Work Plan Revised
| author name =
| author affiliation = TENNESSEE VALLEY AUTHORITY
| addressee name =
| addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
| docket = 05000259
| license number =
| contact person =
| document report number = LER-81-016-01T, LER-81-16-1T, NUDOCS 8106090537
| package number = ML20004D560
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 2
}}
{{LER
| Title = Updated LER 81-016/01T-1:on 810501,during Test,Fire Pump Automatic Start Logic Found Inoperable.Caused by Wiring Removed from Terminal Points in Main Relay Panel 52,during Mod of Panel.Permanent Wire Replaced.Work Plan Revised
| Plant =
| Reporting criterion =
| Power level =
| Mode =
| Docket = 05000259
| LER year = 1981
| LER number = 16
| LER revision = 0
| Event date =
| Report date =
| ENS =
| abstract =
}}
 
=text=
{{#Wiki_filter:~
, Update R2 port - Prsvious Report Data 5/12/81 U. S. NUCLE AR REGULATORY COMMISSION
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LICENSEE EVENT REPORT o
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LICENSE NUMBER 25 26 LICENSE TYPE JO 57 CAT 58 CON'T CL 1.J
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3 60 61 00CKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRl* TION AND PROBABLE CONSEQUENCES h l o l 2 l l During post-modification tests on a new sprinkler system. the fire oumo automatic I
go l3; l start logic was found inoperable.
T.S. 3.11..A.l.b requires operable logic. One fire I
.[ o l 4 ; Ipump was running at the time the inoperability was discovered. The pump was kept l
I io ls; l running while the automatic-start circuit was repaired. Manual start capability
]
Io is ] lwas operable. Units 1, 2, and 3 were affected. There was no danster to the health l
lolij jor safety of the public. There are no redundant systems. There were no previous I
iojg; lsimilar events.
I 80 i
a9 JYSTEM
 
==CAUSE==
CAUSE COMP.
VALV E CODE CODE SUSCODE COMPONENT CODE SUSCODE SU8 CODE m
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10 11 12 13 18 19 20 SEQUEN TI AL OCCURRENCE REPORT REVISION LERiRO EVENT YE4R REPORT No.
CODE TYPE N O.
@ aEPORT l 8l 1l l_l l 0l 1l 6l l/l l0l1l l Tl l-l [1]
21 22 23 24 26 27 28 29 30 31 32 TAK N AC O O PLANT MET HOURS 22 S8 i FOR 8.
SUPPL E MANUFAC RER lCl@l_Zj@
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JJ J4 JS 36 37 40 43 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS lijoll Wiring was removed from terminal points in main relay panel 52, interrupting power to I g,i,j l fire pump auto-start circuit, probably while performing a modification in the canel.
I
,,,,,g ermanent wire was replaced immediately. Workplan was revised to caution electriciansI P
g lco consult with cognizant engineer prior to removing existing wiring.
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i 8 9 80 T1 s TPOWER OTHE A STATUS 015 y RY DISCOVERY DESCRIPTION W [Z_j @ l Ol Ol 0lhl NA l
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Soecin1 test A T:VirY CO TENT AELE ASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELEASE W lZl@ W @l NA l
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t g 9 10 13 44 45 80 PERSONNEL F APOSURES t
NOPeR E R TYPE DESCRIPTION ^
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NuMnER l
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i 4 1 TO 80 NhC USE ONLY e tsuPfifjN e;;ui81 LN_
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o NAME OF PREP ARER PHONE:
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~ Tcnnessee Valley Authority Form BF-17 Browns Ferry Nuclear Plant BF 15.2 3/24/81 LER SUPPLEMENTAL INFORMATION BFRO 259 / 81016 R1 Technical Specification Involved 3.11.A.l.b Reported Under Technical Specification 6.7.2.a(2)
Date of Occurrence 5/8/81 Time of Occurrence 1550 Unit 1, 2, and 3 Identification and Description of Occurrence:
Power (120V AC preferred) lifted to fire pump auto-initiation. The exact duration the circuit had been inoperable could not be determined. However, it is probable that the wiring was removed during the modification activity, making the duration 2 weeks ur less.
Conditions Prior to Occurrence:
Unit 1 refueling outage.
Unit 2 at 99%.
Unit 3 at 100%.
Action specified in the Technical Specification Surveillance Requirements met due to inoperable equipment. Describe.
Reterminated power supply.
Apparent Cause of Occurrence:
Wiring was removed from terminal points in main relay panel 52 resulting in the interruption of power to the fire pump auto-start circuit. Although it could not definitely be determined how the wiring was removed, it is suspected that the wires were removed during performance of a molification in tne panel.
Analysis of Occurrence:
There was no danger to the health or safety of the public, no release of activity, no damage to the plant or equipment, and n) resulting significant chain of events.
I l
 
==Corrective Action==
l
~
workplan requiring the electricians to consu'; the cognizanc engineer prior Replaced permanent wiring immediately. Precautions have been added to the l
to removing any existing wiring.
I l
Failure Data:
Notic
(
j
* Retention. Period - Lifetime; Responsibility - Document Control Supervisor l
/
* Revision:
s i
I
}}
 
{{LER-Nav}}

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