ML19321A052

LER 80-050/03L-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

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: ML19321A047 ML19321A052
References
LER-80-050-03L, LER-80-50-3L, NUDOCS 8007220378
Download: ML19321A052 (2)

Text

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

LICENSEE EVENT REPORT

' CONTROL BLOCK: l 1

l l l l l lh 6

(PLEASE PRINT OR TYPE ALL REQUIREO INFORMATION)

(o [I'l l 0 l H l D l B l S l 1 lg0 l 0 l 0 l 0 l 0 l 0 l C l 0 l0 l0 l250 l@l 4l 1l 1l 1l 1l@l67 CAT l l@

7 8 9 LICENSEE CODE 14 13 LICENSE NUM8ER 26 LICENSE TYPE JO 58 CON'T lol11 5$ CE lLlgl l5l0 l- 10 l 3 l 4 l 668@l690 l 6EVENT l 2 l3 l 8 l 0 74l@l750 l 7REPORT l1 l DATE 7 l 8 l 080l@

7 8 60 61 DOCKET NUVBER DATE 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 1Pressure Injection (HPI) Pump 1-1, thus rendering the motor inoperable. As the unit i 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. I C E CODE SUBC E COMPONENT CODE SUBCODE S ODE f5TBl 7 8 I c ic i@ g@ g@ l P l U l M l P l X l XJ@ {@ ] @

9 10 11 12 13 18 19 20 SEoUENTI AL OCCURRENCE REPORT REVISION

,_ EVENT YE AR REPORT NO. CODE TYPE No.

Nu g O "LER/ROE l218 22l 01 l-l 23 l oi si el26 24 I/I 27 10131 28 29 l LI 30 l-l 31 d

32 K N A T ON ON PL NT ET - N URS 22 SB IT FOR B. SUPPLl MANUFACTURER I

lYl@ lNl@ lBl0l1l0[g 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h lilOllThe exact cause of the occurrence cannot be determined. However, it is assumed that l

, i lthe line was accidentally stepped on by someone in the area. Under Maintenance Work l l , , l Order 80-2613, the wells were replaced, and the oil reservoirs refilled with oil. l l , a I I lW l I

'7 8 9 80 Si S  % POWER oTHER FTATUS Dis O RY DISCOVERY DESCRIPTION 32 g { @ l0l0l0l@l NA l l Blgl Surveillance Test ST 5051.0r l A TlVITY CO TENT AMOUNT OF ACTIVITY LOCATION OF RELEASE i s l NA 8RELEASE @DNA OF RELEASE l l 7

1.Z l 9_ l10Zl@l tt 44 45 80 PERSONNEL EXPOSURES NUMBE R TYPE DESCRIPTION i 7 19 1 6 10 l@l ZI@l NA l

' ' ' ,ERSONNELi~;ubS

• NUYBER DESCRIP TION i a 7 8 9 l o l o 101@l12NA 11 80 l

LOSS oF oR DAMAGE TO FACILITY TYPE DESCRIPTION i 9 [.Zj@l NA l 7 8 9 10 80 ISSU CRIPTION

• lW [ g]E @'D8 AA - l Illllllllllll5 7 8 9 10 ) [g 68 69 80 5 DVR 80-101 John P. Hartigan '

NA O P E . PHONE: $

L

• I 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

i l

I w -. :__ .