ML19309H621

LER 80-050/03L-0:on 800407,during ISI Pump Operability Testing,While Shut Down for Surveillance/Vent Header Installation Outage,Determined That Standby Liquid Control Pump B Did Not Meet Acceptance Criteria

ML19309H621
Person / Time
Site:	Hatch
Issue date:	05/05/1980
From:	Coggin C GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19309H617	List: ML19309H616 ML19309H621
References
LER-80-050-03L, LER-80-50-3L, NUDOCS 8005130567
Download: ML19309H621 (3)

Text

Wi LICENSEE EVENT REPORT 80 0513 OSla7 O w,um-Cm i i i i i i i@ ease -N1 oe - m nmolem lNme-Ni s 5 6 o i l Gl LICENSEE ale IICODE lH l 21@lIS 0101 -'l 0LICENSE l 0 lNUMBEH O l 010 l- 10101@l 26 2G 4111111 LICENSE TYPE JO l 157l@l l

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lEn% LL_J@i ol 5101010 l 31 s i e l@l 0141017 I s l o i@l01 s 10 l O i 74 7b REPORT DATE 80 61 DOCKET NUMBER 03 69 EVENT DATE

? 8 GO EVENT DESCRIPTION AND PRoBA0LE CONSEQUENCES h i lO 121 l During the performance of ISI pump operability testing while shutdown O 3 l for a surveillance / vent header deflector installation outage, it was l l O 4 i determined that Standby Liquid Control Pump "B" (2C41-C001B) did not i O s imeet applicable acceptance criteria during initial testing (dP/dPp Wis i l greater than the 1.09 limit allowed by ASME XI). There were no effects I O c This is a repeti tive i l0 lij i upon public health or safety due to this event.

1 101811 occurrence - refer to LER #50-321/1980-026.

DE CODE S BCO E COMPONENT COOC S SC dE S E 10191

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EVE NT YE A R REPORT NO.

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44 47 33 34 3G CAUSE DESCro?llON AND CORRECTIVE ACTIONS h JT]O] IThe exact cause of the pump apparently performinq better than at a pre- I i i Ivious date is not known; however, it seems to be edue to takinG dP read- I i 7 Iings (not a good indication of performance for th -i s type of pumps) in- I li131 i stead of flow readings. Procedure was revised toi take flow re~adings.

I 1 4 1The unit is now in full comp'

• qnce writh no furthe r reporting required. I 7 8 9 OTHER STATUS IS fY . DISCOVERY OFSCRIPTION ST S  % POWER 1.

I115 l l Gl@ l 0 l 0 l 0 l@l NA l l Bl@l Pump SurvefTilance I 8 A[1tvt T Y CorTENT ELOCATION OP RELEASE AMOUNT OF ACTIVITY NA l Lzl ASED@Or HELE NA RELE ASELz_Jgl i o l [

PEnSON~Et ExPOdl perative per the section XI, IWP-323C). The initial corrective the upper action limit taken was to revise the prrocedure to change for " pump dynamic section XI, head" tm 1.30 per ASME IWP-3210 (refer to LER procedure, HNF-2-3702, was revised on 50-3 E t /19 80-02 6 ) ; the 4-14-80, 4 -G*. - 8 0 . Then, on l pumps. the procedure At that time, it was was run a g a'i n for botMi the "A" and "B" discovered t *h a t neither pump would perform within the desired range - the, were 1.39 and 1.45 for "A" and "B" respectivchf. ratios (dP/dPg)

The probicm with the differential p r e s s itu r e measurements

, appeared.to stem from the fact that the test wa s performed by l pumping to and from a test tank with the pumqp discharp,e valve open. '

enough Under from test this arrangement, to test the pump outpun pressure varied Since to make the ratiio unacceptabic.

this type of pump (i.e. positive <<id i s p l a c e m e n t ) is

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, l

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1 designed to pump a spec i fi ed flow rate at "an'"

y output .

pressure, it was decided that taking differential pressure readings was not a 'true indicator of pump performance. The procedure already required that a pump flow rate and an output pressure reading b e' made to satisfy Tech Specs section 4.1.5.c.2. Thus, the procedure was revised (as permitted by ASME XI, IWP-3100) such that the pump discharge valve is throttled to obtain a reference output pressure (greater than or equal .to the 1190 psig required by Tech Specs), and then flow rate measurement is taken and compared t o. the reference flowrate. The upper limit on the fl ow ratio was changed from "1.03" to "1.30" per ASME section XI, IWp-3210.

The procedure was revised on 4-17-80, and the pumps were tested and declared operable on 4-18-80.

The unit is in full compliance with applicabic requirements, and no further reporting is required. .

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