05000346/LER-1980-050-03, /03L-0:on 800623,while Preparing to Run ST 5051.01,inboard & Outboard Bearing Thermocouple Wells Found Broken on HPI Pump 1-1,rendering Motor Inoperable.Probably Caused by Personnel Stepping on Line.Wells Replaced

/03L-0:on 800623,while Preparing to Run ST 5051.01,inboard & Outboard Bearing Thermocouple Wells Found Broken on HPI Pump 1-1,rendering Motor Inoperable.Probably Caused by Personnel Stepping on Line.Wells Replaced

ML19321A052
Person / Time
Site:	Davis Besse
Issue date:	07/17/1980
From:	Hartigan J TOLEDO EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19321A048	List: 05000346/LER-1980-050, Forwards LER 80-050/03L-0 05000346/LER-1980-050-03, /03L-0:on 800623,while Preparing to Run ST 5051.01,inboard & Outboard Bearing Thermocouple Wells Found Broken on HPI Pump 1-1,rendering Motor Inoperable.Probably Caused by Personnel Stepping on Line.Wells Replaced
References
LER-80-050-03L, LER-80-50-3L, NUDOCS 8007220378
Download: ML19321A052 (2)

LER-1980-050, /03L-0:on 800623,while Preparing to Run ST 5051.01,inboard & Outboard Bearing Thermocouple Wells Found Broken on HPI Pump 1-1,rendering Motor Inoperable.Probably Caused by Personnel Stepping on Line.Wells Replaced

Event date:
Report date:
3461980050R03 - NRC Website

text

RC FORM 366 U. S. NUCLE AR REGULAT00Y COMMISSION (7 77)"

LICENSEE EVENT REPORT

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60 61 DOCKET NUVBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROB A8LE CONSEQUENCES h l o l 2 l l (NP-33-80-64) On 6/23/80 at 1430 hours0.0166 days <br />0.397 hours <br />0.00236 weeks <br />5.44115e-4 months <br />, while preparing to run ST 5051.01, operations l FTTl I personnel found the inboard and outboard bearing thermocouple wells broken on High l

FTT1 1 ressure Injection (HPI) Pump 1-1, thus rendering the motor inoperable. As the unit i

P gTT] l vas in Mode 6, the action statement of T.S. 3.4.5.3 was not entered. This report is l

lo is l lbeing submitted to document a component failure. There was no danger to the health l

[oTi'l I and safety of the public or station personnel, as the HPI pumps were not required to l

Io is l l maintain the plant in a safe condition.

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, i l Order 80-2613, the wells were replaced, and the oil reservoirs refilled with oil.

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8 9 10 DVR 80-101 NA O P E John P. Hartigan PHONE:

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TOLEDO EDISON COMPANY

" AVIS-BESSE NUCLEAR POWER STATION UNIT ONE

- SJPPLEMENTAL INFORMATION FOR LER NP-33-80-64 DATE OF EVENT: June 23, 1980 FACILITY:

Davis-Besse Unit 1 IDENTIFICATION OF OCCURRENCE: High Pressure Injection (HPI) Pum,1-1 motor broken inboard and outboard bearing thermocouple well Conditions Prior to Occurrence: The unit was in Mode 6, with Power (MWT) = 0 and Load (Gross MWE) = 0.

Description of Occurrence: On June 23, 1980 at 1430 hours0.0166 days <br />0.397 hours <br />0.00236 weeks <br />5.44115e-4 months <br />, operations found the inboard and outboard bearing thermocouple well broken while preparing to run a surveillance test on HPI Pump 1-1.

With these wells broken, oil leaked out of the bearing reservoirs rendering the motor inoperable. The HPI pumps are not re-quired by Technical Specification 3.4.5.3 to be operable in Mode 6.

Therefore, there was no action statement entered. This is being reported to document a component fail-4 ure.

4 Designation of Apparent Cause of Occurrence: The. exact cause of the occurrence can-not be determined.

It is assumed the line was accidentally stepped on by someone in the area during the ongoing refueling outage.

Analysis of Occurrence: There was no danger to the health and safety of the public or to station personnel. The plant was in Mode 6, the reactor was in cold shutdown, l

and the HPI pumps were not required to maintain the plant in a safe condition.

Corrective Action

Under Maintenance Work Order 80-2613, the wells were replaced, cnd the oil reservoirs refilled with oil. The repairs were completed on June 24, 1980.

Failure Data: There have been no previous similar reportable occurrences.

LER #80-050 i

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