ML17252A519

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Letter Confirming a 06/04/1974 Conversation Concerning the Discovery That the Setpoints of the Switches Which Isolate the High Pressure Coolant Injection System Needed to Be Reset - Dresden Unit 3
ML17252A519
Person / Time
Site: Dresden Constellation icon.png
Issue date: 06/04/1974
From: Stephenson B
Commonwealth Edison Co
To: James Keppler
US Atomic Energy Commission (AEC)
References
Download: ML17252A519 (1)


Text

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( DIRECTORIATE OF REG.ULATORY OPERATIONS .

TELEGRAMS (OTHER THAN MONEY ORDERS)

REG ION 3 Is PHYSICAL DELIVERY requested? ___ (YES-AGENT, NO-ADDRESSEE}

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SUBJECT DPR-25 9 DRES9EN NUCLEAR POWER STATION UNITE 3.

THIS WILL CONFIRM A.CONVE~SATION WITH F. MAURA OF YOUR OFFICE SF-1201 AT 1330 HOURS THIS BATE CONCERNING THE DISCOVERY-DURING (RS-69) 1971i JUN -4 PH S: OS 1(

ROUTINE CALIBRATION THAT THE SET POINTS OF THE SWITCHES WHICH

(_ ISOLATE TH& HIGH PRESSURE -

COOLANT- INJECTION CHPCI> .

SYSTEM WERE SUCH THAT THE (HPCI> *SYSTEM WOULD NOT HAVE BEEN' AVAILABLE AT A REACTOR PRESSURE OF LESS THAN 90 PSIG AS REQUIRE~ BY SECTION 3.5.C.l OF THE TECHNICAL SPECIFICATION. THE SWITCHES WERE IMMEDIATELY RESET TO OPERATE AT THE PROPER VALUES.

ADDITIONAL DETAILS ARE FORTHCOMING IN THE FORM OF A 10 DAY LETTER IN ACCORDANCE WITH SECTION 6.6.B.1.A Or THE TECHNICAL SPECIFICATIONS c.

B .8 STEPHESNON, SUPERINTENDANT ,l_ \ * ** ~...

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D.RESDEN NUCLEAR POWER STATION CO Mf110 NWEAL TH ED I SON CO MP ANY

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~ SF-1201 (R5-69)