ML19031B561

LER 1977-043-03 for Salem Unit 1 Inoperability of Level Channel Due to a Failed Transmitter

ML19031B561
Person / Time
Site:	Salem
Issue date:	06/28/1977
From:	Librizzi F Public Service Electric & Gas Co
To:	O'Reilly J NRC/IE, NRC Region 1
References
LER 1977-043-03
Download: ML19031B561 (4)

Text

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Public Service Electric and Gas Company 80 Park Place Newark, N.J. 07101 Phone 201 /622-7000 June 28, 1977 (R\egu\atory Docket fl\e Mr. James P. O'Reilly Director of USNRC Off ice of Inspections and Enforcements Region 1 631 Park Avenue King of Prussia~ Pennsylvania 19406

Dear Mr. O'Reilly:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 77-43/03L Pursuant to the requirements of Salem.Generating Station Unit No. 1 Technical Specif icati"ons, Section 6. 9 .1, we are submitting Licensee Event Report for Reportable Occurrence 77-43/03L. This report is required within thirty (30) days of the occurrence.

Sincerely yours, f.P~~

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)

The Energy People 77 :l 9:304:31. l I

Report Number: 77-43/03L Report Date: 6/21/77 Occurrence Date: 6/17/77 Facility: Salem Generating Station Public Service Electric & Gas Company Hancocks Bridge, New Jersey* 08038 IDENTIFICATION OF OCCURRENCE:

No. 12 Steam Generator Level Channel III Inoperable CONDITIONS PRIOR TO OCCURRENCE:

Operational Mode 3, Reactor Coolant System: 530°F, 2200 psig DESCRIPTION OF OCCURRENCE:

At 0623 hours0.00721 days <br />0.173 hours <br />0.00103 weeks <br />2.370515e-4 months <br />, No. 12 Steam Generator Level Channel III was declared inoperable due to the differential pressure transmitter failing high.

Channel III was placed in the tripped condition and Action Statement No. 7 for LCO 3.3.1.1 was implemented. At 2110 hours0.0244 days <br />0.586 hours <br />0.00349 weeks <br />8.02855e-4 months <br />, on 6/17/77, the failed transmitter had been replaced and No. 12 S/G Level Channel III was declared operable. Action Statement No. 7 for LCO 3.3~1.l was terminated.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

The output of the differential pressure transmitter had failed high.

The transmitter output would not respond to a f1P signal. The specific cause of the transmitter failure is not known at this time. This failure is being followed on Deficiency Report No. PD-400.

ANALYSIS OF OCCURRENCE:

Action Statement No. 7 for LCO 3.3.1.1 states that with the number of operable channels one less than the total number of channels, startup and/or power operation may proceed until the performance of the next required channel functional test provided the inoperable channel is 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 />. No. 12 Stearn Generator Level Channel III 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 it was returned to service at 2110 hour0.0244 days <br />0.586 hours <br />0.00349 weeks <br />8.02855e-4 months <br /> on 6/17/77, 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.

"* -~

IiER Report No. 77-4.03L 6/21/77 CORRECTIVE ACTION:

The failed /::.P transmitter was replaced from spares. The new transmitter was calibrated and found satisfactory. No. 12 S/G Level Channel III was declared operable and Action Statement No. 7 for LCO 3.3.1.1 was terminated.

FAILURE DATA:

DIFFERENTIAL PRESSURE TRANSMITTER Manufacturer: ITT Barton Monterey Park, California Model: 386 Serial: 268 output: 4-20 ma.

Prepared by~~~T~.__;;S~p_e~n~c~e~r~~~

Manager - S Station SORC Meeting No.~~~~6~6_-~7~7;__~-

LER 77-43 /03L .--_J

--~- . : :-- 6i21/77 LICENSEE EVENT REPORT-CONTROL BLOCK 6

LICENSEE LICENSE EVENT NAME LICENSE NUMBER TVPE TY.PE

@]!]~N1J:1s_1G1s1~1 5

~ 010_1-101010101-01-101qJ ~411111 ll l:Jo ~

REPORT REPORT CATEGORY TVl'E SOURCE OOCKET NUMSER EVENT CATE REPORT CATE roTtl CCN'TI I I lLJ UJ I 0 I 51 0 I -I 0 I 2 I 71 21 I 0 I 6 I 1 I 7 17 I 7 I I 0 I 6 I 2 l l I 7 17J

~ 57 sa

• 59 so s1 ea 69

• u 15 EVENT OESCRIPTION

@ID I Du~ing Mode III operation, No. 12 S/G Level Channel III was declared in- I

.7 8 g* 80

@)) operable. due to a failed b.P transmitter. All redundant level channels 7 8 9

@)) were operable. *The b.P transnµ.tt~r was replaced from spares and tested.

1 s'Q""---------...----------'---------------------------------------------------,.,i

[filiJ I Testing declared the channel" operable arid Action Statement was terminated.!

7 8 9 80

@fill This is the second occurrence of this type. (Ref. 76-22/031) This event: 1*

1 a9 PRIME SYSTEM COOE CAUSE COOE COMPONENT COOE COMPONENT SUPPLIER*

COMPONENT MANUFACTURER VIOLATION . (77-43/03Laff

@TIJ!C IC I lliJ IIINISITIIil!LJ l.lJ IB I 0 18 10 I lNJ 7 8 9 10 n 12 17 43 44 47 48 CAUSE DESCRIPTION roTa1 I The specific cause of the transmitter failure is not known at this time. I

~9 80 12.12.J

.7 89 ~

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• . FACILITY METHOOOF STATUS '!lo POWER OTHEfl STATUS OISCOVERV DISCOVERY DESCRIPTION

[!El LDJ. IO IO IO I. '~~-N-"-/A~~__.I ~ 'N/A 1 a 9 10 12 13 44 45 46 80 FORM OF ACTIVITY CONTENT

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RELEASEO OF REL.EASE L!.J ~ I AMOUNT OF ACTIVITY N/A I r LOCATION o'NiA"EASE I 7 8 9 10 11 4 4 4~s=----------__;,----...:--------------=1so PERSONNEL EXPOSURES NUMBER* TYPE OESCRIPTION GEa l90 I 0 I 011I 1

lZJ 12 I:-.130:-------~~=----------------------------------------_,,.,,so N/A I

.PERSONNEL INJURIES NUMBER . -OESCRIPTION ITEJ1010101 NA 7 a9 11 12 OFFSITE CONSEQUENCES

~~19 ~~~~~~~--.::.:..Nl~A-=--~~~----~~~~~~~~~~--dJ LOSS OR DAMAGE TO FACILITY TYPE CESCRIPTION GJ!l1z1 I N/A j 1 a'§"""""' ~folr-"------------------==-=-----___;------------..---------------------~i!iSd PUBLICITY 7l2E _________________

8~9 _.....,,_.=>--------------------------------------~80 AOOITIONAL FACTORS Ci]!] ,.., N/.A I.'*:

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NAME: ___________"""T~ * .....;;S:;,.;o--=e""n~c=e-=r.______

• .....;;L;;...;:.. PHONE: (609) 365-7000 Ext. Salem 528