ML20062D341

/03L-0 on 781020:pump for Radiat Monitors Seized, Perhaps Due to Graphite Particles from Pump Being Deposited in Bearings.A Normal End of Life Failure.Code Pump Model 6

ML20062D341
Person / Time
Site:	Calvert Cliffs
Issue date:	11/16/1978
From:	Davis S, Miernicki M BALTIMORE GAS & ELECTRIC CO.
To:
Shared Package
ML20062D340	List: ML20062D335 ML20062D341
References
LER-78-049-03L, LER-78-49-3L, NUDOCS 7811210409
Download: ML20062D341 (1)

Text

NRC FORM 366 U.E NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTROL SLOCiG l l l l i

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lh (PLEASE PRINT OR TYPE ALL REQUtRED INFoRMATION) lo l t8 l9 lM lLICENSEE 7

D lCCOCE lC lN l1 l@l Ol 0l -lLICENSE 14 15 Ol 0l 0l 010l -l Ol Ol@l NuveER 25 26 hl ll ll ll 1l@[

LICENSE TvPE Jo l l@

57 CAT 68 CON'T IoIiI C"C'l 6LLl@l 01 Si 01 01 0l 3l ll 7 l@l1 10 12 10 l7 18 l@l 11 11 11 6l 7 l 880l@

? 8 61 OOCKETNUMBER 68 69 EVENT QATE 74 75 REPORT DATE EVENT DESCRIPTION AND PROSABLE CONSEQUENCES h Io i2l l At 1830 Unit 1 containment carticulate and graseous radiation nonitors I lTTTl Iwere discovered inoperable due to a malfunctioning pump. The redundant i io i4 l l pump was started and the radiation :nonitors were returned to service l loIsl lat 1908 per T.S. 3.4.6.1. The containment sump level alarm system l lol61 Iremained overable during the event. This is not a repetitive event. I lo l 71 l l

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' CoI:'E C0$E SNCc5E COMPONENT CODE 5 BC C'E S E lol91 7 6 9 lB lB l@ lE l@ Q@ l Pl Ul Ml Pl XlIl@ lH l@ ]@

10 11 12 13 18 19 20

_ SEQUENTIAL OCCURRENCE REPORT REVISION LER RO EVENT YEAR REPORT NO. CODE TYPE NO.

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_ 21 22 23 24 26 27 28 29 30 31 32 Y N AC ON O PL NT M HOURS 22 S8 i POR B. I MANU lC 33

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l6Zlg 3 3l7 0l 0l 0] l l Nl g 41 l N] g l Al g l Cl 5l /lER1lg 40 42 43 44 47 CAL 9E OESCRIPTION AND CORRECTIVE ACTIONS h j l3 ; o l [ Pump seized during operation and was replaced with spare. It appears I g l that graphite particles from pumn vanes were deposited in the beariners I g y l causing the seizure. This is a normal end of life failure. No further l g l corrective action is necessary. (Conde Pump MOdel #6). l 11 141 I I 7 a 9 l 80 ST S *. POWER OTHER STATUS Q15 0 Y DISCOVERY DESCRIPTION I1 l 5 l l_EJ@ l0 l 9 l 7 l@l N/A l l Bl@l Ouerator Observation l l

l ACTIV TV CO TENT l RELEASE FRELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE l lt 16 l l Z l l' Zlgl N/A l l N/A l  !

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