ML19263C313
| ML19263C313 | |
| Person / Time | |
|---|---|
| Site: | La Crosse File:Dairyland Power Cooperative icon.png |
| Issue date: | 02/09/1979 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Linder F DAIRYLAND POWER COOPERATIVE |
| References | |
| NUDOCS 7902210202 | |
| Download: ML19263C313 (1) | |
Text
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4 NUCLEAR REGULATORY COMMISSION
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GLEN E LLYN, ILLINolS 60137 Docket No. 50-409 gg g
Dairyland Power Cooperative ATIN:
Mr. F. W. Linder General Manager 2515 East Avenue - South La Crosse, WI 54601 Centleraen:
Enclosed is IE Bulletin No. 79-01.
It requires action by you with regard to power reactor facilities with an operating license except for the 11 SEP plants which are listed in Enclosure 3.
This Bulletin is also being sent for information to the 11 SEP plants and all power reactor facilities with a construction permit.
No action or written response is required for construction permit facilities or the 11 SEP plants.
Should you have questions regarding this Bulletin or the actions required of you, please contact this office.
Sincerely,
. h,ffk. J' James G. Keppler Director
Enclosures:
1.
List cf IE Bulletins Issued in the past 12 months 3.
List of SEP Plants (11) cc w/encls:
Mr. R. E. Shimshak, Plant PDR Superintendent Local PDR Central Files NSIC Director, NRR/DPM TIC Director, NRR/ DOR Anthony Roisman, Esq., Attorney 790221o M W
U.S. NUCLEAR REGULATORY COMMISSION OFFICE OF INSFECTION AND ENFORCEMENT REGION III February 8, 1979 IE Bulletin No. 79-02 ENVIRONMENTAL QUALIFICATION OF CLASS IE EQUIPMENT Description of Circumstances:
The intent of IE Circular 78-08 was to highlight to all licensees important lessons learned from environmental qualification deficiencies reported by individual licensees.
In this regard, licensees were requested to examine installed safety-related electrical equipment and detemine that proper documentation existed which provided assurance that this equipment would function under po=tulated accident conditicns.
The scope of IE Circular 78-08 was much bro.Ar than other previously issued Bulletins and Circulars (such as IEB 78-04 and IEB 78-02) which addressed specific compenent failures.
The intent of this Gulletin is to -aise the threshold of IE wircular 78-08 to the level of a Bulletin; i.e., action requiring a licensee response.
Inspections conducted to date by the NRC of licensees' activities in response to IE Circular 78-08 have identified one component which licensees have found to be unqualified for service within the LOCA environment.
Specificially, unqualified stem mounted limit switches (SMLS). Other than those identified in previously issued IE Bulletin 78-04, were found to be installed on safety-related valves inside containment at both Ouane Arnold and Quad Cities 1 and 2 Nuclear Generating Stations.
The unqualified switches are identified as NAMCO Models SL2-C-11, S3CML, sal-31, SA1-32, D1200j, EA-700 and EA-770 switches. According to the manufacturer, these switches are designed only for general purpose applications and are not considered suitable devices for service in the LOCA environment.
Consequently, switches are being replaced r.t the above power plants with qualified components.
ilso NRC inspection of component qualification has identified eq0ipment wisich does not have documentation indicating it is qualified for the LOCA environment.
The inspections have also identified that the licensees' re-review and resolution of prob eivin the level of attention from all licensees Because of the protracted schedu are now requesting the power rea DUPLICATE DOCUMENT expedite ce npletion of their re-by IE Circube 78-08 dated May 3 Entire document previously entered into system under:
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