ML20084J919

Telecopy AO 2-72-3:on 720426,diesel Generator 2 Tripped. Caused by Erroneous Installation of Jumper on Unit 1 Instead of Unit 2.Jumper Correctly Installed

ML20084J919
Person / Time
Site:	Quad Cities
Issue date:	04/27/1972
From:	Stephenson B COMMONWEALTH EDISON CO.
To:	Boyd D, Jordan E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20084J889	List: ML20084J897 ML20084J919
References
AO-2-72-3, AP-720427, NUDOCS 8305190075
Download: ML20084J919 (1)

Text

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536P EST APR 27 72 DEB 258 SSH246 DE CCD166 (ST 118CC228166)PD WU TSDEPT MOLI 0255P EST04/27/72 O

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, 2C2C 001 DG PD TDMS CORDOVA ILL 27143P CFT .

g s U S ATOMIC ENERGY COMM ATTN DUANE BOYD AND ED JORDAN

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REGION 3 COMPLIANCE 799 ROOSEVELT RD GLEN ELLYN ILL a 6 I

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{h .'5 PET QUAD CITIES NUCLEAR POWER STATION DPR-29 AND DPR-30 APPENDIX Y Y[O O b.

Jg A SECTION 6.6. A.1 - UNITS ONE AND TWO - THE WATER LEVEL IN THE.

hddO Ro'QNIT TWO REACTOR VESSEL WAS LOVERED FOR FINAL. VISUAL INSPECTIO oo fl F t

Q PRIOR TO HEAD INSTALLATION. TO PREVENT AUM INITIATION OF THE m o to u y" ,

n 2MERGENCY DIESEL CENERATORS,. JUMPERS WERE AUTHORI2ED. IN ERROR O b]  !

] hh THE JUMPERS WERE.PLACED ON UNIT ONE PANEL INSTEAD OF UNIT TW 1 $@ PANEL AT 700PM ON 4-26-72. AS A RESULT BOTH DIESEL GENERATORS

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j S'm '2M AND 1/2 STARED AT 11tS6PM ON 4-26-72 AND WERE LOADED ACCORDING STATION PROCEDURES. AT 12:32AM ON RAWUAUW DIESEL GENERATOR p ./s W I 8F.

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1. 2 BEC AME UNSTABLE AND WAS TRIPPED MANUALLY FROM ' DIE CONTROL. ROOM.

INVESTIGATION REVEALED A DAMAGED RECTIFIER IN THE CONTROL .

SYSEM. THE ERROR IN JUMPER PLACEMENT WAS CORRECTED AT.5AM ON 4-27-72. THIS ABNORMAL OCCURANCE IS. REPORED AS INCIDENT 2-72-3 COMMONWEALTH EDISON CO QUAD CITY NUCLE AR POWER STATION -l l B B STEPHENSON i

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