ML20234C929

Forwards Util 730119 Twx Reporting ECCS Reactor Low Pressure Permissive Pressure Switch Found Below Tech Spec level, Re Setpoint Drift of Pressure Switch & 730203 Twx Re Inoperable Limit Switch on Msiv.W/O Encls

ML20234C929
Person / Time
Site:	05000000, Quad Cities
Issue date:	02/08/1973
From:	Skovholt D US ATOMIC ENERGY COMMISSION (AEC)
To:	Mangelsdorf H Advisory Committee on Reactor Safeguards
Shared Package
ML20234A777	List: ML20234A773 ML20234A785 ML20234B065 ML20234B385 ML20234B393 ML20234B406 ML20234B432 ML20234B565 ML20234B626 ML20234B647 ML20234B673 ML20234B680 ML20234B689 ML20234B696 ML20234B714 ML20234B724 ML20234B742 ML20234B758 ML20234B774 ML20234B777 ML20234B794 ML20234B828 ML20234B839 ML20234B891 ML20234B899 ML20234B901 ML20234C039 ML20234C061 ML20234C089 ML20234C118 ML20234C134 ML20234C169 ML20234C181 ML20234C217 ML20234C241 ML20234C296 ML20234C306 ML20234C318 ML20234C355 ML20234C397 ML20234C403 ML20234C407 ML20234C411 ML20234C427 ML20234C429 ML20234C513 ML20234C519 ML20234C536 ML20234C540 ML20234C544 ... further results
References
FOIA-87-40 NUDOCS 8707070017
Download: ML20234C929 (1)

Text

- _ - - - _ -

[..

@'" '8::'

UNITED STATES l

b

[C

• D),' I L

ATOMIC ENERGY COMMISSION f'I C WASHINGTON, D.C. 20545

\\.

.La February 8, 1973

, Docket No'. 50-254 7

,,, 9 - l 9 a:.

0:1 s

Mr. Harold G. Mangelsdorf Chairman, Advisory Comittee on Reactor Safeguards U. S. Atomic Energy Commission Washington, D. C.

20545

Dear Mr. Mangelsdorf:

Sixteen (16) copies of the following are transmitted for the Committee's information:

TWX from Commonwealth Edison Company dated January 19, 1973, reporting that an ECCS reactor low pressure permissive preseure switch was found to actuate below the level specified in the Quad-Cities Unit 1 Technical Specifi-cations.

Letter from Commonwealth Edison Company dated January 25, 1

1973, furnishing information concerning the set point drift of a reactor low pressure switch at Quad-Cities Unit 1.

WX from Commonwealth Edison Company dated February 3,1973, reporting that a limit switch on a main steam isolation valve was found to be inoperable at Quad-Cities Unit 1.

Sincerely, 7

g4f k' Donald J.'

vholt Assistant Director for Operating Reactors Directorate of Licensing

Enclosures:

As stated

$ e _..,,,

p ~ /~5 P. ~ ~ ~ ~ O r-1 O. qf., p g ig,,~,q 1 i

}' d

( "'

' i

,p r.

ekD !

b4 h ; i,(,,'j

(/y y h.h i

8707070017 870610 NHA gd]

-40 PDR

_ - _ - - _ _ - _ _ _ _ _