ML19261E335
| ML19261E335 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 06/11/1979 |
| From: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Weigand J GULF STATES UTILITIES CO. |
| References | |
| NUDOCS 7907050560 | |
| Download: ML19261E335 (1) | |
Text
{{#Wiki_filter:^ v .-',,pn etcm,,o UNITED STATES
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'o NUC'_ EAR REGULATORY COMMISSION $ 51. 7 /.,$ REGION IV 0,'f 4 C 611 RYAN PLAZA oRIVE, SulTE 1000 0+, '\\' U AR L'NGToN, T E XAS 76012 o June 11, 1979 In Reply Refer To: RIV Docket Nos. 50-458/IE Information Notice No. 79-14 50-459/IE Information Notice No. 79-14 Gulf States Utilities Atta: Dr. J. G. Weigand General Manager, Nuclear Projects Post Office Box 2951 Beaumont, Texas 77704 Gentlemen: This IE Informatica Notice is being issued to iall to your accention an aspect of the Co._.lssion's regulations which IE inspectors have found is not always being fully implemented. No written responsa is required. If you have geestions regarding this matter, please contact me. Sincerely, A ' /st l 'n W A/ t Karl V. e fri*7 Director
Enclosures:
1. IE Information Notice No. 79-14 2. List of IE Intormation Notices Insuci in 1979 -9 E) . ) I-7 9 0 7 0 5 c>sw
UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C. 20555 IE Information Notice Na. 79-14 Date: June 11, 1979 Page 1 of 1 S/SETY CLASSIIICATION OF ELECTRICAL CABLE SUPPORT SYSTEMS Sunnary: The NRC inspection staff has found that in several cases, facilities under construction have not applied the pertinent quality assurance requirements of 10 CFR 50, Appendix 3 to the design, procurement, and installation of cable trays and their support systems for Class IE electrical cables. This notice is being issued to all applicants for, and holders of construction permits, to remind them of the Commission's regulations on this subject. Descriptica of Circumstances: 1. In the Comcission's Regulations for Licensing of Production and Utilization Facilitirs - 10 CFR Part 50, Criterion 2 of Appendix A, states in part that "Struc*.ures, systems and components important to safety shall be designed to withstand the effects of.... earthquakes....without loss of capability to perform their safety functions...." 2. The Commission's Regulations on Reacter Site Criteria, Part 100, Appeadix A, define a " safe shutdown earthquake," (SSE) and generally identify the structures, systems and components which are required to remain functional during such an earthquake. 3. Regulatory Guide 1.29 " Seismic Design Classification" states in pertinent part: "C.1. The following structures, systems and components of a nuclear power plant, including their foundations and supports (emphacis added) are designated as Seismic Category 1 and shculd be designed to withstand the effects of the SSE and remain functional. The portinent quality assurance requirements of Appendix B to 10 CFR 50 should be applied to all activities affecting the safety-related functions of these structures, systems and components." "C.1.q. The Class IE electric systems, including the auxiliary systems for the on-site electric power supplies, that provide the c rergency electric pcwer..." ~ No written response to this info rmati DUPLICATE DOCUMENT questions regarding the matter, pleas NRC Regional Office. Entire document previously entered into system unde : OGMC 214 ANO No. of pages: 3 =-a m.}}