ML20084J244

Telecopy Ao:On 730427,during Calibr of Low Level Scram Sensors,Three Switches Found Drifted Beyond Required Setpoint.Switches Recalibr

ML20084J244
Person / Time
Site:	Quad Cities
Issue date:	04/27/1973
From:	Kaliviankis N COMMONWEALTH EDISON CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20084J247	List: ML20084J244 ML20084J251 ML20084J255 ML20084J262 ML20084J268 ML20084J271
References
NUDOCS 8305120270
Download: ML20084J244 (2)

Text

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PMS B. GRIER, cobemaedofIl'd5'ifP"Eai REGION 3dqgIgQEgig)Rindicate s or BY) r

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799 ROOSEVELT RD . . -

GLEN ELLYN IL 60137 REFERENCE Q'UAD CIT Y NEUCLUAR POWER STATION ' UNIT 1 DOCKET 50-254

, DPR-29, APPENDIX A SECTION 1 0. A.2 AND 3.1 DURING ROUTINE CALIBRATION m  ;

0F THE LOW LEVEL SCRAM SENSORS ON APRIL 27, 1973 3 SWITCHES

c WERE FOUND TO HAVE DRIFTED BEYOND THE SET POINT REQUIRED BY n ,

THE LIMITING CONDITIONS FOR OP0 RATIONS LIS 1-263-57 A3 AND l-263-58A f TRIP AT CALIBRATION TEST PRESSURES OF 67.8, 67.1 AND 68.8. INCH 3, 4

(-- I H2O RESPECTIFULLY. THE PRESSURE EQUALIVANT TO THE LCO IS 66.8.

h( l ALL SWITCHES WERE RECALIBRATED TO LESS THAN 62.8 f 1, o m.  !

N. KALIVI ANKIS QUAD CITY NEUCULAR POWER STATION l

) [7[5, H lcA, APR 301973 gjS51$82;o,ggogg o g ,

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I ATOMIC ENERGY COMMISSION

, *r. DIVISION OF COMPLI ANCC 0f REGION lil

1. 49, p 799 ROOSEVELT ROAD T ELEPHONE GLEN ELLYN, ILLINOls 60137 012:3 ese.zeso REGULATORY OPERATIONS, REGION III A. RO Inspection Report No.

Transmittal Date  :

Distribution: Distribution:

RO Chief, RT&OB or RO Chief, RCB RO Chie f, M&FFB RO:llQ (5) RO:HQ (4)

DR C ntral Files L:D/D for Fuel & Materials Re,ulatory Standards (3) DR Central Files Licensing (13)

B. RO Inquiry Report No.

Transmittal Date  :

Distribution: Distribution:

R0 Chief, RT&OB or R0 Chief, RCB (2) RO Chie f, M&FFB RO:ilQ (5) RO:ilQ DR Central Files DR Central Files Regulatory Standards (3)

Licensing (13)

C. Incident Notification From: q

,_C_ommonwealth Edison Company DPR-29 (Licensee & Docket No. (or License No.)

Transmittal Date  : April 30, 1973 Distribution: Distribution:

E0 Chief. RT&OB or RO Chief, RCB R0 Chie f, M&FFB RO:llQ (4) RO:llQ (4)

Licensing (4) L:D/D for Fuel & Materials DR Central Files DR Central Files

.