ML19261B854

LER 79-002/03L-0 on 790205:at 100% Power,Increase in Gaseous Activity Was Observed.Caused by Leakage of No 32 Charging Pump Plunger.Plunger & Packing for Union Pump QX-300 Quintuplex Were Replaced & Unit Returned to Svc

ML19261B854
Person / Time
Site:	Indian Point
Issue date:	03/02/1979
From:	Gumble F POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19261B855	List: ML19261B854
References
LER-79-002-03L-01, LER-79-2-3L-1, NUDOCS 7903070328
Download: ML19261B854 (2)

Text

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LICENSEE EVENT REPORT

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EVENT DESCRIPTION AND PROOABLE CONSEQUENCES lol2l [ While at 100 percent power, an increase in gaseous activity in the l 0 3 PAB was observed, due to the leakage of the No. 32 charging g o 4 l pump plunger. There was an accompanying release of activity, l o 3 l in the form of noble gas (5.5X10-9 Ci) and particulate matter l o o l (5.5X10-8 Ci) which exited into the PAB. Similar events were l ,

l0 l7 l l reported in LER-78-034/03L-0, L::R 78-008/ 03L-0, R.O. 3-14 (B) l l0lal l R.O. 3-15 (B) and R.O.-77-3-19 (B) . l 7 8 9 80 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SU8 CODE COMPONENT CODE SUBCODE SUBCOOE 7

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44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS i o Pump No. 32 was isolated and secured, and charging pump No. 31 l l3 li l l was activated. The plunger and packing for Union Pump QX-300 l

, 7 l Quintuplex were replaced, and the unit was returned to service. l 3 I i 11141 l l 7 8 9 80 ST S  % POWE R OTHER ST ATUS ISCO RY DISCOVERY DESCRIPTION Operator Observation l1 l5 l bh 1110 l 0l@l NA l lAlgl l ACTIVITY CO TENT RELE ASE D OF RELEA%E AMOUNT OF ACTavlTY LOCATION OF RELE ASE 1 G 6.05 E-8 Ci l PAB 55 ft. level l 7 8 9 l30 Pl@l:: 44 l

u 80 PERSONNEL E XPOSURES NUM0fR TY DESCRIPTION 7

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PEliSONN E L INJUniE S NUMett R DESCRIPTION 4I 7

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L Or.S OF OH D AM AGF TO F ACILITY T YPL DL SCf tleilON r

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Putiticity NHC USE ONt Y 2 o insu,

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NA 7903070323 l l l l l l l l l l l l l 1,-

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NAME Oi ritrPAlltf1 PIOYd W. Citmb l e' PilONE: 014 -71' t ii _'an v 5, 7

ATTACl! MENT 1 Docket No. 50-286 Power Authority of the LER 79-002/03L-0 State of New York The plant was operating at 100 percent power in the steady state.

On February 5, 1979, an increase in the gaseous activity ia the PAB was observed. Subsequent investigation showad this to be due to the leakage of the No. 32 charging pump plunger. At this point, pump No. 32 was isolated and secured, and charging pump No. 31 was activated to serve in its place.

Charging pump No. 33 was also out of service for maintenance purposes, but was repaired and restored to service within the time limit (24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />) required by Technical Specification 3.2.C.1.

The plunger and packing for Union Pump (2 7/16X5) QX-300 Quintuplex were subsequently replaced, and charging pump No. 32 was returned to operable state.

The activity release, which escaped into the PAB, was 5.5X10-9 curie of noble gas and 5.5X10-8 curie of particulate matter. These values are below the limits designated by Technical Specification 2.4.2.f (Appendix B).

These limits are 0.5 curie for noble gas and 0.02 curie for radiciodine.

Similar events occurred on October 27, 1978 (LER 78-034/03L-0), April 16, 1978

( LER 78-008/03L-0) , September 30, 1977 (R.O. 3-14 (B) and R.O.-77-3-15 (B) )

and December 16, 1977 (R.O. 77-3-19 (B) ) . Performance of the reactor was not affected by this incident.

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