ML19257C612
| ML19257C612 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 01/14/1980 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | William Jones OMAHA PUBLIC POWER DISTRICT |
| References | |
| NUDOCS 8001290490 | |
| Download: ML19257C612 (1) | |
Text
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NUCLEAR REGULATORY COMMISSION TIC f 4 Y t REGloN av NSIC 2
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January 14, 1980 6
s Docket No.
50-285 Omaha Public Power District ATTN:
W. C. Jones, Division Manager -
Production Operations 1623 Harney Street O=aha, Nebraska 68102 Gentlemen:
Enclosed is IE Sulletin No.79-013 which requires action by you with regard to your power reactor facility rich an operating license.
Should you have questions regarding this 3ulletin or the actions required of you, please contact this office.
Sincerely,
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Karl 7. Seyfrit.]
Director
Enclosures:
1.
IE Bulletin No. 79-013 with Enclosures 2.
List of Recently Issued IE Bulletins cc:
S. C. Stevens, Manager Fort Calhoun Station Post Office Box 98 Fort Calhoun, Nebraska 68102 1821 343 96 8001290
/
UNITED STATES SSINS No..
6820 NUCLEAR REGULATORY COMMISSION Accessions No.-
0FFICE OF INSPECTION AND ENFORCEMENT 7910250528 WASHINGTON, D.C.
20555 IE Bulletin No.79-01B Date:
January 14, 1980 Page 1 of 3 ENVIRONMENTAL QUALIFICATION OF CLASS IE EQUIPMENT Description of Circumstances:
IE Bulletin No. 79-01 required the licensee to perform a detailed review of the environmental qualification of Class IE electrical equipment to ensure that the equipment will function under (i.e., during and following) postulated accident conditions.
The NRC staff has completed the initial review of licensees' responses to Bulletin No. 79-01.
Based on this review, additional information is needed to facilitate completion of the NRC evaluation of the adequacy of environmental qualification of Class IE electrical equipment in the operating facilities.
In addition to requesting more detailed information, the scope of this Bulletin is expanded to resolve safety concerns relating to design basis environments and current' qualification criteria not addressed in the facilities' FSARs.
These include high energy line breaks (HELB) inside and outside primary containment, aging, and submergence., " GUIDELINES FOR EVALUATING ENVIRONMENTAL QUALIFICATION OF CLASS IE ELECTRICAL EQUIPMENT IN OPERATING REACTORS," provides the guidelines and criteria the staff will use in evaluating the adequacy of the licensee's Class IE equipment evaluation in response to this Bulletin.
In general, the reporting problems encountered in the original responses and the additional information needed can be grouped into the following areas:
1.
All Class IE electrical equipment required to function under the postulated accident conditions, both inside and outside primary contain-ment, was not included in the responses.
2.
In many cases, the specific information requested by the Bulletin for each component of Class IE equipment was not reported.
3.
Different methods and/or formats rovidin the written evidence of Class IE electrical e used the System Analysis Method w approach.
This method includes t DUPLICATE DOCUMENT Identification of the protec Entire document previously a.
under postulated accident co entered into system under:
conditions are defined as t h
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from both LOCA and/or HELB i ANO outside the primary contai No. of m es-Yh 182t 344