ML20234D116

Forwards Util 721125 Rept on Two Main Steam Line Flow Switches That Drifted Beyond Unit Tech Spec Limits.W/O Encl

ML20234D116
Person / Time
Site:	05000000, Quad Cities
Issue date:	11/27/1972
From:	Skovholt D US ATOMIC ENERGY COMMISSION (AEC)
To:	Seiss C Advisory Committee on Reactor Safeguards
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References
FOIA-87-40 NUDOCS 8707070105
Download: ML20234D116 (2)

Text

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UNITED STATES i

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ATOMIC ENERGY COMMISSION

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WASHI NGTON, N.C. 205e5

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!M E '.'tC, November 27, 1972

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/J1 10 44 Docket No. 50-254 JM.

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iiEE ON r t.r' y ;,:'3 3 Dr. Chester l'.

Siess l

Chaiman, Advisory Comittee l

on Reactor Safeguards U. S. Atomic Energy Comission Washington, D. C.

20545 Daar Dr. Siess i

Sixteen (16) copies of the following am transmitted for the Comittee 's information:

TWX from Commonwealth Edison Company dated November 25, 1972, reporting that two main steam line flow switches drif ted beyond the Quad-Cities Unit 1 Technical Specifi-

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cation limits.

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Sincem1y,

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Donald J. S'ovfiolt Assistant Director for Operating Beactors Directorate of Licensing Ehclosums:

As stated

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S 8707070105 870610 PDR FOIA PDR THOMAss7-40

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0FFICIAL USE OttLY I

SUFFLEMENT NO 160 CATEGORY B

~ ' Cities Unit 1 December 5,1972, /M u u c* c WE Pressure Switch Set Point Drift 0447^ i,.<V e:

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ACES Commonwealth Edison company M datad h%r 25. 1972 reports +

i two main steam flow differential pressure switch set points drifted out of calibration. Both switches were recalibrates.

and returned to service.

The Committee is currently scheduled to discuss this problem with the Regulatory Staff.

The enclosed material should be retained until the recommended ACRS review has been completed.

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Form ALC-ll8 (Rev. 9-53) AECM 0240 e43-se-sieu-t sis-e s

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