ML19208B801

RO 77-037:on 770829,during Test Start of Diesel Fire Pump, Diesel Failed to Start.Caused by Loosened Battery Cables & Solenoid Connection.Training Session on Battery Maint Scheduled.Preventive Maint Implemented

ML19208B801
Person / Time
Site:	Big Rock Point File:Consumers Energy icon.png
Issue date:	12/09/1977
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML19208B784	List: 05000155/LER-1978-007-03, /03L-0:on 780209,during Routine Test Operation of Emergency Diesel Generator,Unit Tripped on High Water Temp After 25 Minutes of Operation.Caused by Leakage of Cooling Water Pump Shaft Packing Causing Cooling Sys Suction Los 05000155/LER-1978-008-01, /01T-0:on 780215,during Maint of Reactor Depressurization Sys Control Circuitry,Fire Pump Control Switches Inadvertently Placed in Inhibit Position Incorrectly.Control Switches Marked W/Instructions 05000155/LER-1978-010-01, /01T:on 780217,during Review of Electrical Equipment Required for Loca,Steam Drum Low Level Switches Deemed Inadequate for High Temp Environ.Caused by Reactor Protection Sys Not Being Evaluated 05000255/LER-1978-007-01, /01T-0:on 780313,during Sealing of Electrical Connectors Located Inside Containment,Sockets &/Or Sealing Plugs Were Discovered Missing from Connectors.Caused by Connector Holes Not Being Filled During Wiring 05000255/LER-1978-033-01, /01T-0:on 781025,during 15-day Isolation of Waste Gas Decay Tank,Part of Tank Contents Leaked Out.Caused by Faulty Pressure Instrumentation.Instrumentation Recalibr 05000255/LER-1978-040-01, /01X-1:on 781128,during Venting of Waste Gas Surge Tank,Leakage Resulted in Gaseous Release W/O 15-day Holdup Time.Cause Under Evaluation.Rept Will Be Issued by 790105, Not 780105 as Previously Reported 05000255/LER-1978-041-01, /01T:on 781214,dtermined That Insufficient High Pressure Safety Injection Flow Would Be Delivered to Core in Event of Small Break Loca.Caused by Redundant High Pressure Safety Injection Header Being Valved Out of Svc 05000316/LER-1978-026-11, /01T-0:on 780502,during Change from Mode 5 to Mode 4,pumps Became Inoperable When Containment Spray Pump Control Switches in Pull Were in Lockout Position.Caused by Procedural Inadequacy & Personnel Error 05000316/LER-1978-045-03, /03L-0:on 780612,following Addition of Boric Acid to Borated Water Sys,Boron Injection Tank Boron Concentration Found to Be Below Limits.Caused by Chemical Technician Error ML19208B783 ML19208B793 ML19208B794 ML19208B801 ML19208B802 ML19208B805 ML19208B806 ML19208B811 ML19208B814 ML19208B833 ML19208B836 ML19208B840 ML19208B843 ML19208B845 ML19208B848
References
RTR-REGGD-01.016, RTR-REGGD-1.016 NUDOCS 7909210427
Download: ML19208B801 (1)

Text

"ipdate Report - Previous Report Date 9/29/77"

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UCENSEE EVENT REPORT 3:a Foc:< r::::

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l (pt:ULSE PRINT ALL REQULRED INFORMArm 1

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EVENT DESCRIPT1CN l Following observation during routine rounds of diesel pump control panel lights di=,

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@ l a test start of the diesel fire pump was initiated.

The diesel failed to start.

8 7 89 l Refuel operations were stopped until repair was made and the pump started in manual 04 8

7 89 05 l mode on 8/29/77. Not repetitive.

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12 17 43 44 47 CAUSE DESCatPTION lTwo batterv cables and a solenoid connection were found loose and retightened on the e

7 89 M lA batterv unit.

The B batterv had dischareed for reasons unknown and has subsecuent

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] lly been recharged.

A training session on battery maintenance has been (CONTD)

MENCO OF FACLsTV OTHER STATUS 0:SCOVERY CfSCOVERY CESCRPTCN STATUS

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l0l0l0l l NA l W l Operator observed abnormal indicati 11 7 8 9

10 12 13 44 45 48 7cTUvN cc4 TENT AELEasiO Cs AELEASE

/ VouMT CF ACTNtTY LOCATCN CF RELEASE LzJ LzJ l NA l

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PERSCNNEL EXPCSURES NuuaEr TYPE CEScASTCN l

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PEPSONNEL INJURIES i

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NUMBER CCSCMrTCN libi

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! " I I! i L, l 0l 0 l 0l l NA 14 7 89 11 12 PR03ABLE CC'iSEquENCES t5 lNone.

Redundant electric pump was operable during period of deficiency.

7 89 LCSS CR DAMAGE TO FACIUTY (gCy Q Q Q Type CESCneTcN

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AOCITICNAL FACTORS d l (Cause Description - Contd) scheduled for Dececber 1977 and preventive maintenance-7 89 h ! checks to verifv batterv connector integrity have been imple ented.

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