ML19031A906

LER 1977-039-03 for Salem Unit 1 Inoperability of Pressurizer Level

ML19031A906
Person / Time
Site:	Salem
Issue date:	06/24/1977
From:	Librizzi F Public Service Electric & Gas Co
To:	O'Reilly J NRC/IE, NRC Region 1
References
LER 1977-039-03
Download: ML19031A906 (4)

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Public Service Electric and Gas Company 80 Park Place Newa.rk, N.J. 07101 Phone 201/622-?0QO

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rro Mr. James P. O'Reilly <*

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c::i)'I nirector of USNRC (,~:~

Off ice of Inspections and Enforcements  !:~;B2

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King of P:russia, Pennsylvania 19406 c::;!'J t*l ""N",_..,,,.

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.CJ LICENSE NO. DPR-70 DOCKET NO. 50-272

• RE:PORT:ABLE *OCCURRENCE 77-39/03L Ptl~suant to the requirements 6f Salem G~rierating Station Unit No. 1 Technical Specifications, Se~tl6n 6.9.1, we are submitting

. Licensee Event Report for Reportabl:e" OGc.ur<r:ence 77.-39/0-3-b. This report is required within thirty (30) days of the occurrence.

Sincerely yours,

)JtiAy

.F. P. Librizzi General Manager -

Electric Production CC: Director, Office of Inspection and Enforcement (30 copies) .

Director, Office of Management Information and Program Control (3 copies)

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-.-1n4'-..I The Energy People

LER.77-39/03L 6/10/77

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'LICENSEE EVENT REPORT ~ \ ~'\ y "'-'~'1 O'.' *.

CONTROLBLOC:<  !(')! f 171 JJ )! 716 l .

1..ICENSEC: LICENSE EVENT NAME 1.ICO:NSE NUMt;E?. TYPE TV?E

@:IT] jN I J l SIG l S l l !

9 14 10101-10101010101-1*010J 15 2:.

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1 REPORT i:<EPORT CATEOORY TYl'E SOURCE OOCKET NUMBER EVENT CATE R_EPORT OATE.

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@TI] Duri nq Mode I Operation, Channel T pressurizer le~rel was dec1 ari::>~ in- I 7 8* 9* 80

@TI] I operable due to it indicating 3-5% oreater than other ooerable channels. I

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'[9}'11 Channel I *was Placed in the tripped condition and ?~on Stater!i;ents for 7 gg '~

[oisiU,CO 3.3.1.l ai'"ls 3.3.2.l were imolemented. :c:s transmitter sensinc line wa.si 7 3B ~

~ j-backfilled with DM water and gas was flushed back i:o -nressurizer. I 7 8 9 PRIME SO SYSTEM CAUSE COMPONENT COMPONENT COOE COOE COMPONENT COOE *SUl'Pl..JER MANUFACTURER VIOl.ATION

[ill] l!J!Ll l£j IX I X I X I X I X__LlLl llJ I Z I 9 19 I 9 I tN.J 7 8 9 10 11 12 17 43 44 47 48 CAUSE* OESCf\lPTION

~!Non-condensable gas trapped in the ~P transmitter sensing line

~9 l.2ill I caused a false high level sigTial.

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FACILITY METl-IOO OF STATUS '!fo POWER OTl-IE~ STATUS OISCOV.ERV DISCOVERY pESCRIFTION

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I~,__~,__,__,___,I laJ N/A 1 a . g 10 12 13 44 45 FORM CF ACTIVITV CONTENT REl..EASEO OF REl..EASE AMOUNT OF ACTIVITY 1..0CATION OF RELEASE G:E) ~ ~ I N/A I I~.--~~~,__...._.__N_/_A~~,__,___.._..,.--.,,:1 7 8 9 10 11 ~- ~ ~

PERSONNEL EXPOSURES r.r.;") NUMBER TYPE DESCRIPTION 7

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13 PERSONNEL INJURIES NUMBER DESCRIPTION

[£01010101 NA 1 e9 11 12 OFF~TECONSECUENCES

~..._~--------------------~N:.!L..~A=------------------------------------~---------Fld LOSS OR DAMAGE TO FACILITY GE] 19:;j 7 8 IOESCRIPTION

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N/A _________________________________,,,__-""1 AOOITIONAL FACTORS EE] ~~sn::¥R!

7 ~a~,,.......--__,,..,.,,P NAME: ____________T--'.'--""L'"".'""*-"'S_o .....e.---=-n~c=e'""r.____ PHONE: (609) 365-7000 Ext. Salem 528

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Report Number: e39/03L Fi.~port Date: 6/10/77

• Occur.rence 5/24/77 Facility: Salem Generating Station Public Service Electric S: Gas Company Hancccks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Pressurizer Level Channel I Inoperable CONDITIONS PRIOR TO OCCURRENCE:

Ope~aion~l Mcide l, Reactor-Power 95%

DESCRIPTION OF OCCURRENCE:

At 1525 hours0.0177 days <br />0.424 hours <br />0.00252 weeks <br />5.802625e-4 months <br />, pressurizer ievel channel I was declared inoperable due to it reading 3 to 5% higher than other operable channels. The pressurizer level channel was placed in the tripped condition. Action Statement No. 7 for LCO 3.3.1.1, Table 3.3-1 was placed in effect.

Power operation continued thru 5/31/77 when the channel was repaired

~*' . and returned to service.

DES:IGNATION OF APPA:RENT CAUSE OF OCCURRENCE::

Non-condensable gas trapped in the sensing line between the condensate pot an~ the differential pressure transmitter caused a false high level signal. <

ANALYSIS OF OCCURRENCE:

Action Statement No. 7 for LCO 3.3.l.l allows power operation to con-tinue until the next required functional test provided the inoperable channel is placed in the tripped condition within l hour. Channel I pressurizer level was placed in the tripped condition within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and remained in that condition until repairs were made on 5/31/77.

• Therefore, the LCO was not violated. At no time was there any danger to the health and safety of the general public or site personnel.

CORRECTIVE ACTION:

The differential pressure sensing line was backfilled with DM water through the condensate pot into the pressurizer. The trapped gas was flushed out and the level signal was reduced to within 20 millivolts of other operable channels. Pressurizer level Channel I was declared operable and the Action Statement terminated.

77-39/03L 6/10/77

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e Not Applicable Prepared by~~~~-*~*--=~p~e~n~*~c~e~r:__~~

m s Manager,

• Sa...t.em Generating Station SO~C Meeting No. 64-7 7 f; .*

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