ML19329E342
| ML19329E342 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 11/08/1977 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Howell S CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| NUDOCS 8006120652 | |
| Download: ML19329E342 (1) | |
Text
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.cy CENTRAL FILES K0'V 0 81FT Docket No Docket No. 50-330 i
Consumers Power Company ATTN:
Mr. Stephen H. Howell l
Vice President l
1945 tiest Parnall Road Jackson, MI 49201 I
Centlemen:
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Enclosed is IE Bulletin No. 77-05 which requires action by you with regard to your power reactor facility with an operating license or a construction permit.
Should you have questions regarding this Bulletin or the actions l
required of you, please contact this office.
I Sincerely, i
i James C. Keppler Director
Enclosures:
1.
IE Bulletin No. 77-05 w/ attachments (2) 2.
List of IE Bulletins
'""*d I" I' 7' THIS DOCUMENT CONTAINS ce w/enels:
P00R QUAUTY PAGES Central Files i
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November 8, 1977 IE Bulletin 77-05 ELECTRICAL CONNECTOR ASSEMBLIES Description of Circu= stances Recent tests conducted by the Sandia Laboratories of electrical connector / cable assemblies in a simulated post-LOCA containment environ =ent (Lk'R) demonstrated that the assemblies failed to perform in an acceptable manner. The connectors are the pin and socket type, with metal shell and screw couplings. The specific test specimens were manufactured by Bendix, ITT Cannon and Gulton Industries using combina-tions of Anaconda and ITT Surprenant cables. Details of the specific connector / cable combinations, test conditions, test results and other pertinent information are described in the Attachment.
While electrical connectors of the type tested are not normally used in applicatfons that are required to survive LOCA conditions, it is not possible in the absence of specific information to conclude that such applications do not exist.
Further, it is unknown whether other manu-facturers have suppIded similar assemblies, whether such assemblies have been properly qualified for the intended service or whether these type of assemblies are utilized in applications that must continue to operate reliably in a LOCA environment.
Action To Be Taken By Licensees and Permit Holders:
For all power reactor facilities with an operating license or a construction permit:
1.
Determine whether your facility utilizes or plans to utilize electical connector assemblies of the type tested by Sandia Laboratories, or any other similar type, in systems that are located inside containment, are subject to a LOCA environment and are required to be operable during a LOCA.
2.
If any such applications are identified, review the adequacy of qualification testing for the assemblies and submit the documenta-tion for NRC review, OA'f' f()
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IE Bulletin 77-05 November 8, 1977 LISTING OF IE BULLETINS ISSUED IN 1977 Bulletin Subj ect Date Issued Issued To No.
77-04 CaleuIntional Error 11/4/77 All PWR Power Affecting the Design Reactor Pacilities Performance of a System with an Operating 4
for Controlling PB of License (OL) or Containnent Sump Water Contruction Permit (CP)
Pollowing a 14CA 77-03 on-Line "esting of 9/12/77 All W Power the W Solid State Reactor Taeilities Protection System with an Operating License (OL) or Construction Permit (CP) 77-02 Potential Pailure 9/12/77 All Holders of Mechanism in Certain Operating Licenses W AR Relays with (OL) or Construc-Relays with Latch tion Permits (CP)
Attachments 77-01 Pneumatic Time 4/29/77 All Holders of Delay Set Point Operating Licenses Drift (OL) or Construc-tion Permits (CP)
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