ML20084U075

Telecopy Ro:On 720802,during Routine Surveillance,Isolation Condenser Inboard Steam Isolation Valve MO3-1301-1 Failed to Close.Investigation Underway

ML20084U075
Person / Time
Site:	Dresden
Issue date:	08/02/1972
From:	Worden W COMMONWEALTH EDISON CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20084U071	List: ML20084U069 ML20084U075
References
NUDOCS 8306270044
Download: ML20084U075 (2)

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1136 A EST AUC 2 72 DEB 089 DE y, '3 DECQ RKQQWOLK APPIUI TC215) PD 08/02/72 1124 . $, , _';0 p o , T-, kb o ICS IPMJLIA JOL . c. . .

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2C2C a ;ME c 050 BJ PD TDJ MORRIS ILL 2 1112 A CDT

'_a pp #b PMS BOYCE GRIER DIR DIVN OF COMPLI ANCE RECION 3W c/-.LL , q. ,,/

US ATOMIC ENERGY COMM '99 ROOSEVELT RD CLEN ELLYN ILL 60137 SUBJECT DPR25 DRESDEN NUCLEAR POWER STATIONS UtJIT 3.

THIS IS TO CONFIRM A CONVERS ATION WITH MR H D ANCE OFF ICE OF YOU AT 1010 HOURS THIS D ATE CONCERNING A F AILURE OF THE ISOL A R

INBOARD STEAM ISOL ATION V ALVE M03-1301-1 TO CLOSE DURING ROUTINE SURV EILL ANCE.

AT 1500 HOURS ON AUGUST 1972 RO UTD'E SURVEILL ANCE W AS .

BEING CONDUCTED ON THE HIGH STEAM LINE FLOW ISOL ATIONS SENSOR OF THE ISOL ATION CONDENSER THE BRE AKER FOR V ALVE M0 3-1301-1 TRIPPED, AS THE V ALVE ATTEMPTED T0 v.m, nee,

%% ' L'> 9y CLOSE; THE TEST WAS REPEATED ONCE WITH SIMIL AR RESULTS.

ALL SUBSEQUENT SURVIELL ANCE TESTS AND AT LEAST 5 MANUAL OPER ATIONS OF THIS V A WERE CONDUCTED SATISFACTORILY.

INVESTICATION IS UNDERWAY TO DETERMINE THE POSSIBLE CA MALFUNTION AND WILL DE REPORTED AS REQUIRED BY SECTIO TECHINIC AL SPECIFIC ATIONS.

W P WPRDEN SUPT DRESDEN NUCLEAR POWER STATION. '

3 1010 M03-1301 -1 1500 1 19 72M03- 1301- 16.B.2 5 8306270044 720810 f

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