ML19031B036

LER 1978-044-03 for Salem Unit 1 Inoperability of No. 11 S/G Feedwater Flow Channel 2

ML19031B036
Person / Time
Site:	Salem
Issue date:	08/24/1978
From:	Librizzi F Public Service Electric & Gas Co
To:	Grier B NRC/IE, NRC Region 1
References
LER 1978-044-03
Download: ML19031B036 (4)

Text

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• .., e Public Service Electric and Gas Company

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-i Mr. Boyce H. Grier $:E Director of USNRC  :::.:w

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--1 Office of Inspections and Enforcements 0 Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Grier:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 78-44/03L Pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1.9.a, we are submitting Licensee Event Report for Reportable Occurrence 78-44/03L. This report is required within thirty (30) days of the occurrence.

Sincerely yours, 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) 95*2001 300M 10*74

Report Number:

Report Date:

Occurrence Date:

e 78-44/03;L 8/24/78 8/9/78 Facility: Salem Generating Station Public Service Electric & Gas Company Hancocks Bridge, New. Jersey 08038 IDENTIFICATION OF OCCURRENCE:

No. 11 Steam Generator Feedwater Flow Channel II Inoperable CONDITIONS PRIOR TO OCCURRENCE:

Operational Mode 1, Reactor Power 99%

DESCRIPTION OF OCCURRENCE:

At 2040 hours0.0236 days <br />0.567 hours <br />0.00337 weeks <br />7.7622e-4 months <br />, during functional testing, No. 11 Steam Generator Feed-water Flow Channel II was declared inoperable due to the trip point being above the.Technical Specification limit. Action Statement No. 7 for LCO 3.3.1.1 was implemented and at 2335 hours0.027 days <br />0.649 hours <br />0.00386 weeks <br />8.884675e-4 months <br />, instrumentation per-sonnel returned the channel to operable status.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

This occurrence was the result of a failed operational amplifier in the dual comparator which resulted in the trip setpoint being above

• the Technical Specification limit.

ANALYSTS OF OCCURRENCE:

~echnical Specification 3.3.1.1, Action Statement No. 7, states that "with the number of operable channels one less .than the total number of channels, startup and/or power operation may proceed until perform-ance 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. 11 Steain Generator Feedwater Flow Channel II was placed in the tripped con_dition with-in 1 -hour* and remained in that condition until

'it ~as returned to operable status.

• CORRECTIVE ACTION:

.Four operational amplifiers were replaced in the Hagan Dual Output Comparator. The comparator was then replaced. The functional test

-_was then completed to confirm operability.

---

1 LER 78-44/03L FAILURE DATA:

Dual Output Comparator-Manufacturer: Hagan Controls Orville, Ohio Model: 4111082-002 Prepared by T. L. Spencer

~~~~~--=~~~~~~~-

Manager l_ s!iem Generating Static SORC Meeting No. 51-78

~~~~~~~~~~-

• • • • -. _........""'"' U.S. NUCLEAR REGULATURY COMMISSION 11.n1 CONTROL BLOCK: I e

I I LICENSEE EVENT REPORT 1G) (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION!

1 6 ,

~ I N IJ I s I G I s I 1 101:s o I o1- I o I o I o I o I o I - I o I o 101 4 I 1 I 1 I 1 I l 101 I I0 7 8 9 LICENSEE CODE 14 LICENSE NUMBER 25 26 LICENSE TYPE ;JO Si CAT 58 CON'T

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~:~~~ LlJ© I o I s I 60 61 oI o I o I 2 I 7 I 2 101 o I s I o I 9 I 7 I s I© I o I a I 2 DOCKET NUMBER 68 69 EVENT CATE 74 75 I 4 I 7 I a 10 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@

CQID I During functional testing, No. 11 S/G Feedwater Flow Channel 2 was J declared inoperable due to the bistable setpoint being above T.S. limit~

!TID

• CTI:!] All remaining channels were operable. This is the fifth occurrence of J CQli) this type.

C£ID lil2J

[§J]J 1 8 9 80 SYSTEM CAUSE. CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUB CODE SUBCODE I IIAI@ w@ w@ 1r1N1s1T1R1u1e ~@

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20 SEQUENTIAL OCCUR REN CE REPORT REVISION

~ LER *Ro LvENT YEAR REPORT NO. CODE TYPE NC.

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. ACTION FUTURE

• EFFECT SHUTDOWN * ~ ATTACHMENT NPRD4 PRIME COMP. COMPONENT TAKEN ACTION ON PL.ANT METHOD HOURS ~ SUBMITTED FORM ~UB. SUPPLIER MANUFAC7URER

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47 CAUSE DESC.RIPTION ANO CORRECTIVE ACTIONS @

DJ)) I The* cause of this occurrence was failed operational amplifier in the dual comparator module which resulted in the setpoint being above T.S.

ITJ]J limits. Operational amplifiers were replaced and functional test completed.

OEl0 9 1 80 FACILITY STATUS  % POWER OTHER STATUS tJo'I

\.:::::J METHOD OF DISCOVERY DISCOVERY OESCRIPTION ~

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ITTIJ W@ I 01 91 9 l@I...._ _N...../_,_A....__ _ llLJ~I Functional TBsting 7 8 9 10 12 11 44 45 46 80 ACTIVITY CONTENT r.:;;;...

RELEASED OF RELEASE AMOUNT OF ACTIVITY .. LOCATION OF RELEASc@

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• 8 .9

• 10 11 N/A 44 N/A 80

. PERSONNEL EXPOSURES t:::::\

NUMBER (.;;\TYPE~ DESCRIPTION ~

!IE] I o I o I o k~W .......__N_/_A_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.....

1 a 9 11 12 1:1 80 PERSONNEL INJURIES ~

NUMBER DESCRIPTION~

~I 8 9 ol ol ol@)._________N~A=-------------------------------------------------------------'

11 12 80 LOSS OF OR DAMAGE TO FACILITY t4:j\

TYPE DESCRIPTION ~

[2liJ 7 B 910 W@ NA

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NAMEOFPRE?ARER~~--T"-"-.-=L~-.._-s.o~e~n-c.;;..;::e~r.._____________ PHONE: (609)365-7000 Salem Ext.~

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