ML20085K216

Telecopy Ro:On 731028,while in Cold Check Down Condition,Air Start Sys on Diesel Generator 3 Failed.Investigation Underway

ML20085K216
Person / Time
Site:	Dresden
Issue date:	10/29/1973
From:	Worden W COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 8310200354
Download: ML20085K216 (1)

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! W EE Telegram

- mestern union OCi'9 R D 9 VEE 195(1542)(1-020684C302)PD 10/29/73 1540 i

ICS IPMVEIC MVN 03169 TDVE MORRIS ILL 125 10-29 1145A CST l

PM6 JAMES G KEPPLER REGIONAL DIRECTOR I

DIRECTORAIE OF REGULARITY OPERATIONS REGION 3 US me AIOMIC ENERGY COMMISSION 799 ROOSEVELT RD h$GLENELLYNILL60137 58 SUBJECT DPR-25 DRESDEN NUCLEAR POWER STATION UNIT 3.

ho IHIS WILL CONFIRM A C00NVERSATION WITH MR F MAURA 0F YOUR OFFICE At 1120 HOURS THIS DATE CONCERNING A FAILURE OF THE AIR START 00 gg 6YSTEM ON DIESEL GENERATOR NUMBER 3.

D Sm ON OCTOBER 28, 1973 AT 910AM FOR UNIT 3 WAS IN THE COLD OS(n CHECK DOWN CONDITION DIESEL GENERATOR NUMBER 3 WAS GIVEN A START SIGNAL FOR SOME PLANNED TESTING. INSUFFICIENT 1

STARTING AIR LINE AND THE DIESEL STARTED AND OPERATED i

SATISFACTORILY. 2/3 DIESEL GENERATOR WAS ALSO STARTED s cr-ms msen s

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AND LOADED TO VERIFY

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IIS OPERABILITY. AN INCSTIGATION INTO THE CAUSE OF FAILURE la UNDERWAY i

W P WohDEN I

aVPERINTENDENT DRESDEN NUCLEAR POWER ' STATION COMMONWEALTH EDISON COMPANY ROUTE 1 MORRIS ILL x pm f' 4'T23 (Cyg

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