05000272/LER-2078-005-03, Loss of Position Indication on Valve

Loss of Position Indication on Valve

ML19031B169
Person / Time
Site:	Salem
Issue date:	02/24/1978
From:	Librizzi F Public Service Electric & Gas Co
To:	Grier B NRC/IE, NRC Region 1
References
LER 1978-005-03
Download: ML19031B169 (4)

LER-2078-005, Loss of Position Indication on Valve

Event date:
Report date:
2722078005R03 - NRC Website

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Public Service Electric and Gas Company 80 Patk Place N.ewark, N.J. 07101 Phone 201 /622-70QO ::3 -*

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• ,__.,.J [T"i Mr. Boyce H. Grier Director of USNRC February 24, 1978 Off ice of Inspections and Enforcements Region l 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Grier:

LICENSE NO. DPR-70

. DOCKET NO. 50-272 REPORTABLE OCCURRENCE 78-0S/03L Q

Pursuant to the requirements of Salem Generating Station Unit

• No. l Technical Specifications, Section 6. 9.1. 9. b, we are submitting Licensee Event Report for Reportable Occurrence 78-0S/03L.

This report is required within thirty (30) days of the occurrence.

Sincerely yours, fP.~~

F. P. Librizzi General Manager Electric Production CC:

Director, Office of Inspection and Enforcement (30 copies)

Direct~ Off ice of Management Information and Program Control The Energy People 780690011 I

It.,

ec Occurrence Date:

1/29/78 Facility:

Salem Generating Station*

Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Containment Isolation Valve 1CV69 Inoperable CONDITIONS PRIOR TO OCCURRENCE!

Startup Mode 2 DESCRIPTION OF OCCURRENCE:

At 1558 hours0.018 days <br />0.433 hours <br />0.00258 weeks <br />5.92819e-4 months <br />, during unit startup with normal charging and letdown in service position indication was lost on valve lCV69(CVCS -

Charging line isolation).

Valve lCV69 would not operate from the control console.

Operations personnel checked valve and verified that it was open.

Techriical Specification Action Statement 3.6.3.l.a was implemented..

Maintenance personnel investigated and corrected

• the malfunction such that.the valve was returned to operable status at 1651 hours0.0191 days <br />0.459 hours <br />0.00273 weeks <br />6.282055e-4 months <br />.

DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

This occurrence was caused by the 230 Volt valve controller not being completely seated in the control center.

This condition produced high resistance connection leading to.valve inoperability.

Although no maintenance has been performed on this valve controller in the recent past, this. event was probably the result of a personnel error.

• ANALYSIS OF OCCURRENCE:

Technical Specification Action Statement 3.6.3.l.a states that with one or more of the isolation valve(s) specified in table 3.6-1

.. inoperable,*restore the *inoperable valve to operable status within 4.hours.

Valve 1CV69 was returned to operable status in 53 minutes therefore, no further action was required.

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CORRECTIVE ACTION

Investigation revealed that the valve controller was not fully seated in the control center.

The valve controller was removed, visually inspected, and replaced. Full seating was verified.

Surveillance requirement 4.6.3.l.l was then completed to confirm operability.

FAILURE DATA:

N/A Prepared* by~~T-~ __ L __

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L.2...L2.J~o-I During unit startup, RO noticed loss of position indication on valve LlLl1J 1* 1CV6 9.

Valve would not operate from control console.

Valve was veri-fied to be open and Action Statement 3.6.3.1.a was implemented.

Valve 1CV68 (series isolation valve) was operable.

Valve 1CV69 was returned I a I" I Io! s !

Io I 6 I to operable status in 53 minutes.

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CAUSE CESCAIPT10N AND CORRECTIVE ACTIONS@

47 11 lo! I This occurrence was caused by the valve controller not being fully o:ID I seated in the control center resul tina in high resistance connections. I CjJ1J No maintenance has been performed on this controller in recent past.

LiJ1j Controller was removed, visually inspected, reolaced.

Full seatina wast OJTl verified.

Surveillance 4.6.3.1.1 was satisfactory.

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NRC USE ONLY 7 a 91 *a---------------------------------------------------------68 69 ao ;

NAMEOFP~E~AAER..........,;T....... L __

• ___ s_c_e_n_c __ e_r __________,,__

PHONE: (609)365-7000 Sal:!!! EX't.~

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