ML19257C606
| ML19257C606 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 01/14/1980 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Cavanaugh W ARKANSAS POWER & LIGHT CO. |
| References | |
| NUDOCS 8001290483 | |
| Download: ML19257C606 (1) | |
Text
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- UNITED STATES Fy a s:w* -
NUCLEAR REGULATORY COMMISSION I,.
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LPDR Decke: ';o s.30-313 30-368 STATE Arkansas ?:ver and Light Cenpany A C T:
Mr. Willia = Cavanaugh III Vice ? resident of Generatic:
and Construe icn
?. O. 3cx 551 Little Rock, Arkansas 72203 Gentlenen:
Inclosed is II 3ulletin !!o.79-013 vhich requires ac:ica by you vi:h regard :o your pcwer reac:Or facili:ies with an operating license.
Should you have questices regarding this 3ulletin or :he actions required of you, please contac: this office.
Sincerely,
-/
m j
/
Karl 7.
Seyfri:- /
/
Direc:Or
Enclosures:
1.
II 3ulletin To.79-013 with Enclosures 2.
List of Recently Issued II Sulletins cc:
Janes ?. O danlon, Plan Manager Arkansas liuclear One
?. O. 3ox 608 Russellville, Arkansas 72301
)
d 8001290 R
UNITED STATES SSINS No..
6820 NUCLEAR REGULATORY COMMIS2 ION Accessions No..
OFFICE OF INSPECTION AND ENFORCEMENT 7910250528 VASHINGTON, 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' respo.ses 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 REACTOR 3," 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 funct2on 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 were used in providing the written evidence of Class IE electrical used the System Analysis Method approach.
This method includes DUPLICATE DOCUMENT Identification of the prot a.
under postulated accident Entire doctunent previously conditions are defined as entered into system under:
from both LOCA and/or HELB 79f g
<J outside the primary contai AtH3 / //
W U
No. of pages:
Y 1 Cf5 US3