ML17252B003
| ML17252B003 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 01/15/1973 |
| From: | Worden W Commonwealth Edison Co |
| To: | Grier B US Atomic Energy Commission (AEC) |
| References | |
| Download: ML17252B003 (3) | |
Text
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A.
REGULATORY OPERATIONS, REGION III RO Inspection Report No.
Transmittal Date Distribution:
RO Chief, RT&OB or RO Chief, RCH RO:HQ (5)
DR Central Files Regulatory Standards (3)
Licensing (13)
Distribution:
RO Chief', M&FFB RO:HQ (4)
L:D/D for Fuel & Materials.
DR Central Files B.
RO Inquiry Report No.
- c.
Transmittal Date Distril,utio::l:
RO Chief, ~C&OB or RO Chief, RCB ( 2)
- RO:HQ (5)
DR Central Files Regulato~y Standards (3)
Licensing (13)
Distribution:
RO Chief, M&FFB RO:HQ DR Central Files Incident Notification From:
Commonwealth Edison DPR-25 (Licensee & Docket No. (or License No.)
Transmittal Date January 15, 1973 Distribution:
RO Chief, RT&OB or RO Chief, RCB RO:HQ (4)
.Licensing (4)
DR Central Files Distribution:
RO Chief, M&FFB RO:HQ (4)
L:n/n for Fuel &. Materials DR Central Files
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.i VEA343C2354)Cl-039262C010)P0 01/10/73 235(, . 1973JntJ f 0 p u If* 00 I II !CS IPMVEIF MVN ZCZC 06357 TOVE MORRIS ILL 133 Ol~q315P CST PMS MR BOYCE GRIER DIRECTOR DIV OF COMPLIANCE REGION.3 WX US ATOMIC ENERGY COMMISSION 799 ROOSEVELT ROAD, GLEN ELYN ILL SUBJECT DPR 25 TO SPRAY THE CONTAINMENT. ,-\\ si:-120l~E 3.2.2 OF THE TECHNICAL SPECIFICATIONS STATES THE TRIP* [J SETTING SHOULD BE GREATER THAN OR EQUAL TO 2/3 CORE HtIGHT. 2/3 CORE HEIGHT IS EQUAL 257 INCHES OF WATER ON THIS INSTRUMENT. TRIP SETTING WAS FOUND TO BE LOW BY 2 INCHES. THE INSTRUMENT WAS RESET TO TRIP AT 2/3 CORE HEIGHT PLUS 3 INCHES W.P. WORDEN SUPT. COMMONWEALTH EDISON DRESDEN NUCLEAR POWER STATION R. R.1 MORR~ ILLINOIS , ""I I '1 ~* *1 ' l" I *1 !i;* t111
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). ,.... _,,,,., *' N N N N # / - R B .MSG..'NR 771 USAEC HQS GTWN ,.Regulatory.' ...-..-..~... -i..,.*-.;...,_,,.c TLXA009 WAB375C2354)Cl-039262C010002)PD 01/10/73 2351 ,* I CS I PM VE I F M V N ZCZC 06358 TOVE MORRIS ILL 133 01-10 0315P CST PMS MR A GIAMBUSSO DEPUTY DIRECTOR FOR REACTOR PROJECT, wx tiIRECTORAT~~OF LICENSING _ U~ ATOMIC ENERGY ~OMMISSION WASH DC 50-249 -SUBJECT DPR 25 DRESDEN NUCLEAR POWE~ STATION UNIT THREE THIS WILL CONFIRM A CONVERSATION WITH MR F. MAURA OF YOUR OFFICE AT -1415 HOURS THIS DATE CONCERNING A LEVEL SWITCH ON LPCI SYSTEM* BEING OUT OF CALIBRATION. WHILE MAKING A FUNCTION TEST, THE TRIP SETTING ON LITS 3-263-73A WAS FOUND TO BS TOO LOW. THIS LEVEL SWITCH SENSES 2/3 CORE HEIGHT AND GIVES LPCI PERMISSIVE TO SPRAY THE CONTAINMENT. TABLE* 3.2.2 OF THE.TECHNICAl SPECIFICATIONS STA! SETTING SHOULD BE GREATER THAN OR EQUAL TO 2/3 CORE HEIGHT. 2/,3. CORE
- HEIGHT *rs EQUAL 257 INCHES OF WAtER ON THIS I.NSTRUMENT.
TRIP SETTING WAS.. FOUND TO BE LOW BY 2 INCHES. THE INSTRUMENT . WAS RESET TO TRI~* AT 2/3 CORE HEiGHT PLUS 3 INCHES W.P. WORDEN SUPT. COMMONWEALTH EDISON
- .DRESDEN NUCLEAR POWER STATION R.R.l MORR?? ILLINOIS USAEC HQS GTWN WU WSH.
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