ML17252A824

Note to Confirm a Conversation Concerning Discovery of a Leaking Containment Inerting Isolation Valve A03-1601-21 During Local Leak Rate Testing - Dresden Unit 3

ML17252A824
Person / Time
Site:	Dresden
Issue date:	02/18/1975
From:	Stephenson B Commonwealth Edison Co
To:	James Keppler NRC/RGN-III
References
Download: ML17252A824 (1)

Text

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res IPMBNGZ CSP 8159424449 TDBN MORRIS IL 02-18 0537P EST*

PMS J~MES G KEPPLER~ REGIONAL DIRECTOR DIRECT~RATE OPERATIONS REGION 3 U.S. ATOMIC ENERGY COMMIS$ION 9 799 ROOSEVELT RD  !'.

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SUBJECT:

DPR-25 DRESDEN NUCLEAR POWER STATION~UNIT 3. ~.:J r *:

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THIS WILL CONFIRM A CONVERSAtION WITH PHIL JO~NSON OF YOUR OFFJ~E AT~: 11 ~.:: ~, ~-** 1 CJ -.:..;

1530 HOURS THIS DATE CONCERNING DISCOVERY OF A ,, LSAK!NG CONT~INMENT

.INERTING ISOLATION VALVE A03-1601-21 9 DURING ~OCAL LEAK RATE TESTINGo .AT THE ~IME, 1800 HOURS 2*14-75 UNIT~3 WAS OPERATING AT 396MWE. THE VALVE WAS BLIND PHLA~GED TO SEAL OFF THE PENETRATION BY i

0500 HOURS ON 2*15-75. SUBSEQUENT INSPECTION qF THE VALVE WITH THE UNTT COLD SHUT DOWN ON 2-16-75 REVEALED THE S~AT SF-1201 (RS-69) *:

TO BE CRACK[D.

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1, INVESTIGATION IS IN PROGRESS TO DETERMINE CAU$E AND ADDITIONAL INFORMATION WILL FOLLOW IN A 10 DAY.REPORT 0 B B STEPHENSON SUPERINTENDENT DRESDEN NUCLENR POWER STATION 11 COMMONWEALTH EDISON co RR l MORRIS ILLINOIS 6d~so NNtH-J ,,:!

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