05000369/LER-1981-108-03, /03L-0:on 810705,vacuum Pump Seized Causing Loss of Flow Alarm on EMF-33 Monitor.Caused by Condensation Being Aspirated Into Vacuum Pump Due to Improper Drainage.Damaged Pump Repaired

/03L-0:on 810705,vacuum Pump Seized Causing Loss of Flow Alarm on EMF-33 Monitor.Caused by Condensation Being Aspirated Into Vacuum Pump Due to Improper Drainage.Damaged Pump Repaired

ML20010A925
Person / Time
Site:	McGuire
Issue date:	08/03/1981
From:	Nardoci P DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20010A924	List: 05000369/LER-1981-108, Forwards LER 81-108/03L-0.Detailed Event Analysis Encl 05000369/LER-1981-108-03, /03L-0:on 810705,vacuum Pump Seized Causing Loss of Flow Alarm on EMF-33 Monitor.Caused by Condensation Being Aspirated Into Vacuum Pump Due to Improper Drainage.Damaged Pump Repaired
References
LER-81-108-03L, LER-81-108-3L, NUDOCS 8108130118
Download: ML20010A925 (1)

LER-1981-108, /03L-0:on 810705,vacuum Pump Seized Causing Loss of Flow Alarm on EMF-33 Monitor.Caused by Condensation Being Aspirated Into Vacuum Pump Due to Improper Drainage.Damaged Pump Repaired

Event date:
Report date:
3691981108R03 - NRC Website

text

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NRC FORM 364 U.S. NUCLEAR RECULATORY COMMessioN tr m LICENSEE EVENT REPORT EXHIBIT A CONTROL 8 LOCK; l l

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.I oOCK ET NtaM.4R ES SVENT oATE 74 is mEPoAI DAf g EVENT ofsCRiPnote AND PROS A8LE CONSEQUENCES h o 2 [ While in Mode 4, investigation of a loss of ficw alarm on the condenser steam l E l nir ojector radiation monitor (EMF-33) determined that the vacuum pump had I

Iseized. The monitor was declared inoperable per T.S. 3.3.3.9 which is report-l o 4 8 Iable ner T.S.

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lTITII ejector systems confirmed that no radiation levels above background were presept.

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4, CAUSE CESCRIPTION AND CCARECnVE ACTIONS 27 s o lThe failure of the eauipment was a direct result of condensation being aspiratpd g l into the vacuum pump due to improper drainage. Periodic sampling and analysis, m I was performed as required by the appropriate action statement, and the damaged; m I pump was repaired. Modifications are being made to correct this recurring i problem.

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