ML19257C613
| ML19257C613 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 01/14/1980 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Millen C PUBLIC SERVICE CO. OF COLORADO |
| References | |
| GL-80-5, NUDOCS 8001290492 | |
| Download: ML19257C613 (1) | |
Text
ENCL. 5 - NUREG 058 UNITED STATES not included.
a 7m n c,,# -
NUCLEAR REGULATORY COMMISSION
/
r1 RecioN iv bcc to DAC:ACM:
3 "
t' 3
$11 RY AN PLAZA c RIVE. SUITE 1000 f
ARLINGTCN, TEX AS 75012
-, =r m.Jm.i s,!
CENTRAL RILES
?
January 14, 1980 PDR:HQ LPDR JSIC
'ocket No. 50-267 STATE Pu'elic Service Co=cany of Colorado ATN :
Mr. C. K. M111en Senior Vice President
?. O. 3ox 340 Denver, Colorado 30201 Gentlenen:
Inclosed is II Sulletin No.79-013 which recuires ac:ica by you vi:h regard to your power reac:or facili:7 vi:h an operating license.
S'nould you have questions regarding this 3ulletin or :he actions required of you, please contac: this office.
Sincerely, s'
r
/
! 1
/
p
?-
/
- 4 Mf f
,x,
_ 6 Karl 7. Seyfri:. / -
Director
/
Inclosures:
1.
II 3ulletin No.79-013 vich Inclosures 2.
List of Recently Issued II 3ulleeins cc:
D. 'J. 'iarenbourg, Nuclear ?roduccion Manager For: St. Vrain Nuclear Station
?. O. 3cx 368 Pla::eville, Colorado 30631 L. 3 rey, Manager, Quality Assurance 1829 341 8001290
%1
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 were used in providing the written evidence of Class IE electrical used the System Analysis Method approach.
This method includes M DUPLICATE DOCUMENT Identification of the prote E Entire document previously a.
under postulated accident c E entered into system under:
conditions are defined as t ANO 7 / 2 5 5 B S from both LOCA and/or HELB outside the primary contai kk No. of Pages:
1821342
'