05000272/LER-1982-024, Supplemental LER 82-024/03X-1:on 820410,svc Water Flow to Containment Fan Coil Unit 12 Discovered to Be Less than Required 700 Gpm.Caused by Valve 12SW223 Being Stuck in Closed Position.Valve Exercised

Supplemental LER 82-024/03X-1:on 820410,svc Water Flow to Containment Fan Coil Unit 12 Discovered to Be Less than Required 700 Gpm.Caused by Valve 12SW223 Being Stuck in Closed Position.Valve Exercised

ML20082K688
Person / Time
Site:	Salem
Issue date:	11/17/1983
From:	Frahm R, Zupko J Public Service Enterprise Group
To:	Murley T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-82-024-03X-01, LER-82-24-3X-1, NUDOCS 8312050274
Download: ML20082K688 (4)

LER-2082-024, Supplemental LER 82-024/03X-1:on 820410,svc Water Flow to Containment Fan Coil Unit 12 Discovered to Be Less than Required 700 Gpm.Caused by Valve 12SW223 Being Stuck in Closed Position.Valve Exercised

Event date:
Report date:
2722082024R00 - NRC Website

text

NRC FORM 366 U. S. NUCLE AR REGUL ATORY COMMISSION (7 77)

LICENSEE EVENT REPORT CONTROL BLOCCC: l

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? 8 61 14 75 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h l o l 2 l l On April 10, 1982, during surveillance testing, the Control Room Operator discovered j

[olal l that the service water flow to No. 12 Cor.tainment Fan Coil Unit (CFCU) was less l l o 13 l l than the 700 GPM required. No.12 CFCU was declared inoperable, and at 1211 hours0.014 days <br />0.336 hours <br />0.002 weeks <br />4.607855e-4 months <br />, l lnl5l l Action Statement 3.6.2.3.a w e entered. l 1016 I l l 10171 I I tolH Il l 7 8 9 'O DE CODE SLBC E COVPONENT CODE SUBC DE S ODE lol9l I 6 l Sl Blh Wh ]h l Vl Al Ll Vl El {'h l Alh W h 9 10 11 12 12 18 19 2U SEQUENTI AL OCCUR CIE NCE REPORT REV'S'ON

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]g 42 l Ig 43 lFl1l3l0lg 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l i j o l l Flow Control Valve 125W223 had stuck in the closed position, resulting in low service l l1 111 l water flow to the CFCU. Valve 12SW223 was exercised, and No. 12 CFCU was satisfactorilly i , ; 3. i [ tested. The unit was declared operable, and at 1540 hours0.0178 days <br />0.428 hours <br />0.00255 weeks <br />5.8597e-4 months <br />, April 10, 1982, Action l

[il3l l Statement 3.6.2.3.a was terminated. Daily operation of the CFCUs has corrected this l

[ i 14 l l problem. l 7 8 9 80 STA S  % POWER OTHER ST ATUS ISCO RY DISCOVE RY DESCHrPTION li Is I LcJ@ l o I o l o l@l n/^ l ISl@lSurvei ^nce T*= tin 9 i ACTIVITY CO TENT RELEASED OF RELE ASE AYOUNT OF ACTIV'TY LOC ATION OF RELE ASE l1 l6l 1 8 9 h 10 l

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ISSUE DESCRIPTION 2 0 l_N,j l N/A l lllllllllllll 7 8 9 10 68 69 80 5 NAME OF PREPARER PHONE:

O PSEG Public Service Electric and Gas Company P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Generating Station November 17, 1983 l Dr. Thomas E. Murley Regional Administrator USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Dr. Murley:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 82-024/03X-1 SUPPLEMENTAL REPORT Pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1.9b, we are submitting supplemental Licensee Event Report for Reportable Occurrence 82-024/03X-1.

Sincerely yours,

/

J. M. upko, Jr.

General Manager -

Salem Operations RF:kllhL6 CC: Distribution V

fi The Energy People if$

(*> 2189 (20M) 1181

- - - . _ _ - - - ~. - . - . - _ .-

I

. Report Number

82-024/03X-1 Report Date: 11-17-83 Occurrence Date: 04-10-82 Facility: Salem Generating Station, Unit 1 Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

No. 12 Containment Fan Coil Unit - Inoperable.

This report was initiated by Incident Report 82-080.

CONDITIONS PRIOR TO OCCURRENCE:

Mode 3 - Rx Power 0% - Unit Load 0 MWe.

DESCRIPTION OF OCCURRENCE:

On April 10, 1982, during surveillance testing, the Control Room Operator discovered that the service water flow to No. 12 Containment Fan Coil Unit (CFCU) was less than the 700 GPM required. No. 12 CFt] was declared inoperable, and at 1211 hours0.014 days <br />0.336 hours <br />0.002 weeks <br />4.607855e-4 months <br />, Action Statement 3.6.2.3.a was entered.

Redundant CFCUs and both Containment Spray Systems were operable throughout the occurrence.

j DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:

Flow Control Valve 12SW223 had stuck in the closed position, resulting in low service water flow to the CFCU. The binding of type SW223 valves is e.pparently associated with the accumu-l lation of scale and corrosion on the valve stems, resulting from the CFCUs being idle between monthly surveillance runs.

ANALYSIS OF OCCURRENCE:

The CFCUs operate in conjunction with the containment spray systems to remove heat and radioactive contamination from the containment atmosphere in the event of a design basis accident.

Operability of the equipment is necessary to insure offsite radiation dose is maintained within the limits of 10CFR100.

As noted, containment cooling capability was provided by the redundant equipment; no undue risk to the health or safety of the public was therefore involved in this occurrence. The occurrence constituted operation in a degraded mode permitted by a limiting condition for operation and is reportable in accordance with Technical Specification 6.9.1.9b.

l l

1 l

. LER 82-024/03X-1 .

' ANALYSIS OF OCCURRENCE: (continued)

Technical Specification 3.6.2.3.a requires:

With one group of containment cooling fans inoperable, and both containment spray systems operable, restore the inoperable group of cooling fans to operable status I

within 7 days, or be in at least hot standby within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in cold shutdown within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

CORRECTIVE ACTION:

Valve 12SW223 was exercised, and No. 12 CFCU was satisfactorily tested. The unit was declared operable, and at 1540 hours0.0178 days <br />0.428 hours <br />0.00255 weeks <br />5.8597e-4 months <br />, April 10, 1982, Action Statement 3.6.2.3.a was terminated.

Due to recurrent problems of this type, daily operation of CFCUs in low speed was commenced in December 1982 (per revision of Operation Directives 40-46). No further problems have been noted since that time. Running the CFCU results in cycling of the associated control valves and has apparently eliminated the problem with the sticking of these valves.

FAILURE DATA:

Fisher Controls Co.

l 8 inch Vee-ball Valve l Type 657-80 l

i r

Prepared By R. Frahm -

V Gen 6ral Man 6ger -

Salem Operations SORC Meeting No.83-118

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