ML20084V005

Telecopy Ro:On 720307,while Conducting Monthly Surveillance Test,Wiring Error Discovered in LPCI Logic to Spray Containment Under Accident Conditions.Wiring Corrected

ML20084V005
Person / Time
Site:	Dresden
Issue date:	03/13/1972
From:	Worden W COMMONWEALTH EDISON CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20084U996	List: ML20084U994 ML20084V005
References
NUDOCS 8306290699
Download: ML20084V005 (1)

Text

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Telegram

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= DEB 78 6 SSA5 63 bE CCD372 (Cli b73CC421372)PD=YlU JOL 073 6P E ST03/13/72,:

M R B0Y,CE GR I E R D i RE CTOR A.E.C. =Z CZ C 1 PD NL TDJL COMPLi ANCE RE GI ON 3r.= MORRIS I LL 13y=

799 ROOSEVELT RD GLEN ELLYN 'lLL 601373 2

FDPR 2 9 DRE SDEN NUCLE AR POVIER STATI ON UNI T 35=

Tlil s WILL CONFI RM CONVERSATI ON AT 16iOO liRS. Tlf l'S DATE WI Tli 11. v= DANCE 0F RE GI ON 3 C0'JPLi' ANCE RE GARD.l N G A Wl R I N G .

ERROR UNCOVERED.=l N Tile LPCI LOGI C TO SPRAY TliE CONTAl'NMENT UNDER ACCI DENT CONDI Tl ONS.5=TliE WI RING ERROR WAS Di SCOVERED AT 15iOO liRS. ON 3/7/72 V!!ilLE CONDUCTI N Cr.=A MONTiiLY SURVE I LL ANCE TE ST. TliE ERROR WOULD NOT li AVE BEEN NOTEDs=

EXCEPT Tli AT AT TliE T.lME OF TliE SURVEILLANCE A LPCI SYSTEM s-WU IN1 (R 5 09)

=LOVI-FLOV! SWI TCli V!AS ALSO OUT OF Call'BRATION. Till S SETCUP A CONDIII ONv=DI FFE RENT Tl1 AT Tli AT NORM ALLY FOUND DUR'l N G TliE SURVE I LL ANCE TESTov=TliE Vil Rl'N G ERROR WAS CORRECTE D o,e ON 3 /8/72 = Tlil S INCL DENT YlAS NOT REPORTED S0ONER BECAUSE WHEN TliE STATI ONv=l N I T.I' ALLY. RE VI EWE D TiiE PROBLEM l T Yl AS FELT TO BE A 30-DAY NOTI FI CATI ONs=BEC AUSE TliE

$l h LPCI SUBCSYSTEM VlAS ALVIAYS OPERABLEo TliE EFFE CTv=0F ".

{l TH I S Vil RI N G E RROR WAS ONLY. TO PR0lil.B I T PE RM I SSI VE T0 v=

$g : SPRAY. TliE DRY WELL WI Tli GRE ATE R Tli AN 2/3RDS CORE HEl GHTlie Tlil Sa=FUNCTI ON IN SPI TE OF TiiE WI RIN G ERROR COULD li AVE BEEN PERFORMED v=BY. ME ANS OF AN l'N ST ALLE D B Y.2P ASS SYli TCliv=

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