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| {{Adams
| | #REDIRECT [[05000296/LER-1981-022-03, /03L-0:on 810511,during Normal Operation,Valve FCV-74-57 Motor Starter Thermal Tripped Upon Opening & Closing.Caused by Broken Bolts Which Hold Motor Together. Motor Bolts & Bearings Replaced]] |
| | number = ML20004D545
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| | issue date = 06/04/1981
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| | title = LER 81-022/03L-0:on 810511,during Normal Operation,Valve FCV-74-57 Motor Starter Thermal Tripped Upon Opening & Closing.Caused by Broken Bolts Which Hold Motor Together. Motor Bolts & Bearings Replaced
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| | author name =
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| | author affiliation = TENNESSEE VALLEY AUTHORITY
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| | addressee name =
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| | addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
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| | docket = 05000296
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| | license number =
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| | contact person =
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| | document report number = LER-81-022-03L, LER-81-22-3L, NUDOCS 8106090516
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| | package number = ML20004D539
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| | document type = LICENSEE EVENT REPORT (SEE ALSO AO,RO), TEXT-SAFETY REPORT
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| | page count = 2
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| }}
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| | |
| =Text=
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| l~U] LDuring urmal weratin, valve M-74-57 motor starter thermal tripped upon opening (T.S. 3.5.B.6 and ;
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| EE I and closing, rr dering loop 1 containment cooling inoperable.
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| l mj L3g.7). There was no danger to the health or safety of the public. Redundant 1 There were no previous similar events. [
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| ,jireplaced and motor returned to service. This is considered a r.andom failure and ;
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| Ten.ie:see Valley Authority Fonn BF-17 Browns Ferry Nuclear Plant BF 15.2 3/24/81 LER SUPPLEMENTAL INFORMATION DFRO 296 / 81022 Technical Specification Involved 3.5.B.6 and 3.5.B.7 Reported Under Technical Specification 6.7.2.b(2)
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| Date of Occurrence 5/11/81 Time of Occurrence 1900 Unit 3 Identification and Description of Occurre nee:
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| Valve FCV-74-57 motor starter thermal tripped upon opening and closing.
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| Conditions Prior to Occurrence:
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| Unit i refueling outage.
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| Unit 2 at 98%
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| Unit 3 at 98%
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| .setion specified in the Technical Specification Surveillance Requirements met due to_ inoperable equipment. Describe.
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| Required surveillance rcquirements were met.
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| Apparent Cause of Occurrence:
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| The bolts which hold the motor together broke.
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| Analysis of Occurrence:
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| There was La danger to the health or safety of the public, no release of activity, I
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| no damage to the plant or equipirent, and no resulting significant chain of events.
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| l l
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| i Corrective Actica:
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| Bolts and n.otor bearings replaced, motor tested and returned to service.
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| i i
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| l l
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| Failure _ Data :
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| None
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| !
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| * Reten tion : Period - Lifetime; Responsibility - Document Control Supervisor
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| $ Revision: t. /,
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