ML20084Q201

Ro:On 740118,pressure Switch PS-2-1001-88A Tripped at 2.05 Psig Instead of 1.95 Psig Setpoint.Cause Unknown.Switch Recalibr

ML20084Q201
Person / Time
Site:	Quad Cities
Issue date:	01/18/1974
From:	Kalivianakis N COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20084Q196	List: ML20084Q192 ML20084Q201
References
NUDOCS 8306130166
Download: ML20084Q201 (2)

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F I KEPPLER DIRECTORATE OF REGULATORY OPERATIONS REGION 3 US ATOMIC ENERGY 6[ M COMMISSION 799 ROOSEVELT RD GLEN ELLYN IL 60137 REFERENCE QUAD CITIES NUCLEAR POWER STATION DOCKET #50-265DPR30 APPENDIX A SECTION ! .0. A.2 AND 3.2.B TABLE 3.2.2 AND 6.6.8 ON JANUARY 17 DURING ROUTINE SURVEILLANCE ON UNIT #2 PS-2-1001-88A WAS FOUND TO TRIP AT 2.05PSIG INCREASING INSTEAD OF THE I.95PSIG SET POINT THIS EXCEEDED THE 2.OPSIG LIMITING CONDITION FOR OPERATION SPECIFIED IN TABLE 3.2.2 0F TECHNICAL SPECIFICATION THE SWITCH RECALABRATED TO I.95PSIG ON JANUARY 17 DURING ROUTINE SURVEILLANCE ON UNIT #2 THE SWITCH #1 0F LIS-2-263-72D WOULD NOT TRIP EVEN THOUGH TEST PRESSURE WAS INCREASED TO GREATER THAN 120 INCHES WATER SWITCH SET POINT IS 112 INCHES WATER THE ECCS CAPABILITY WAS NOT LOST DUE TO THE PROPER OPERATIONS OF SWITCHES IN LIS-2-263-72 A B AND C SWITCH #1 WAS MECHANICALLY TRIPPED AND BEGAN FUNCTIONING PROPERLY THE CAUSE OF THE FAILURE WAS NOT DETERMINED SO THE SWITCH WAS REPLACED AND LIS-2-263-72D WAS RECALABRATED N J KALIVIANAKIS 1251 EDT 4

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REGION III trug og 799 ROOSEVELT ROAD TELEPHONE GLEN ELLYN, ILLINots 60137 0123 sss-zseo A. RO Inspection Report No.

Transmittal Date  :

Distribution: Distribution:

R0 Chief, FS&EB RO Chief, FS&EB RO:HQ (5) RO:HQ (4)

DR Central Files L:D/D for Fuel & Materials Regulatory Standards (3)

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DR Central Files Licensing (13) RO Files R0 Files B. RO Inquiry Report No.

Transmittal Date  :

Distribution: Distribution:

R0 Chief, FS&EB RO Chief, FS&EB RO:HQ (5) RO:HQ DR Central Files DR Central Files Regulatory Standards (3) R0 Files Licensing (13)

RO Files C. Incident Notification From: Commonwealth Edison Co., Docket No. 50-265 (Licensee & Docket No. (or License No.)

Transmittal Date  : January 29, 1974 E?

bh Distribution:

R0 Chief, FS&EB Distribution: gy A RO:HQ (4)

RO chief, FS&EB gg <

Licensing (4)

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RO Files .g s 5

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