ML19257C863
| ML19257C863 | |
| Person / Time | |
|---|---|
| Site: | Trojan File:Portland General Electric icon.png |
| Issue date: | 01/15/1980 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Goodwin C PORTLAND GENERAL ELECTRIC CO. |
| References | |
| NUDOCS 8001300625 | |
| Download: ML19257C863 (45) | |
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UNITED STATES 8 T ).,, (
NUCLEAR REGULATORY COMMISSION f
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1990 N. CALIFORNIA BOULEVARD
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,o SulTE 202, WALNUT CREEK PLAZA WALNUT CR E E K, CALIFORNI A 94596 JAN 151990 Docket ?!o. 50-344 Portland General Electric Company 121 S. W. Salmon Street Portland, Oregon 97204 Attention: Mr. Charles Goodwin Assistant Vice President Gentlemen:
Enclosed is IE Bulletin fio.79-01B which requires action by you with regerd to your power reactor facility with an operating license.
Should you have questions regarding this Bulletin or the actions required of you, please contact this office.
Sincerely, R. H. Engelken Director
Enclosures:
1.
IE Bulletin fio.79-01B with Enclosures 2.
List of Recently Issued IE Bulletins cc w/o enclosures:
C. P. Yundt, PGE F. C. Gaidos, PGE J. W. Lentsch 1833 235.
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UNITED STATES SSINS No.:
6820 NUCLEAR REGULATORY C0W11SSI0t!
Accessions l'o.:
0FFICE OF INSPECTION AtlD ENFORCEMErli 7910250528 WASHINGTON, D.C.
20555 January 14, 1980 IE Bulletin No.79-01B EllVIR0f01EilTAL4 QUALIFICATION OF CLASS IE EQUIPMENT Description of Circumstances:
IE Bulletin flo. 79-01 recuired the licensee to perfom 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 infomation is needed to facilitate completion.of the flRC 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 subtrergence., "GUIDELIrlES FOR EVALUATIt!G EilVIRONMEtlTAL QUALIFICATION OF CLASS IE ELECTRICAL EQUIPMENT IN OPERATIt!G 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 infomation requested by the Bulletin for each component of Class IE equipment was not reported.
3.
Different methods and/c. fomats were used in providing the written evidence of Class IE electrical egripment qualificaticns.
Some licensees used the System Analysis Method whth nroved to be the most effective approach.
This method ir.cludes the followin inf a.
Identification of the pro under postulated accident DUPLICATE DOCUMENT conditions are defined as
.from both LOCA and/or HEL Entire document previously outside the primary conta entered into system under:
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