ML19347A780
| ML19347A780 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 09/16/1980 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Reed C COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 8009300215 | |
| Download: ML19347A780 (2) | |
See also: IR 05000454/1980012
Text
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION
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Docket No. 50-454
Docket No. 50-455
Commonwealth Edison Company
ATTN:
Mr. Cordell Reed
Vice President
Post Office Box 767
Chicago, IL 60690
Gentlemen:
This is in response to Mr. Abel's letter of August 12, 1980, concerning
an item of noncompliance identified at the Byron Station and brought to
your attention by our letter dated July 10, 1980. We have reviewed your
response and our position on this matter remains unchanged.
We acknowledge that our finding of a " common header" was a mischaracteri-
zation; however, our finding that a nonconforming condition exists remains
,
unchanged.
Cooling system lines essential to operation of the redundant
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cmergency diesel generators, do not meet the single (common mode) failure
criteria.
Lines serving both generators are located, in part, in a
common room housing one of the emergency diesel generators such that a
single postulated accident could lead to failure of both cooling lines
and thus failure or degradation of both generators.
The following clarification is provided concerning the statement in the
last paragraph of your response relative to respective NRC responsibilities.
The inspection and administrative practices of the Nuclear Regulatory
Commission routinely include verification of the licensee's adherence
to design commitments, which in turn relate to the design criteria.
Failure to meet these commitments does constitute an item of noncompliance.
8009800275
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Commonwealth Edison Company
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To reiterate, your response must include:
(1) The corrective steps which
have been taken by you and the results achieved, (2) the corrective steps
which will be taken to avoid further noncompliance, and (3) the date when
full compliance will be achieved. Section 2.201 of 10 CFR Part 2 requires
that you respond within thirty. days of your receipt of this letter.
,
if you have further questions'regarding this matter please contact this
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office.
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Sincerely,
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pJamesG.Keppe
Director
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cc:
Mr. J. S. Abel, Director
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of Nuclear Licensing
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Mr. Gunner Sorensen, Site
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Project Superintendent
Central Files
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Reproduction Unit NRC 20b
Local PDR
Mr. Dean Hansell, Office of
Assistant Attorney veneral
Myron M. Cherry, Chicago
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