ML19224C394
| ML19224C394 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 06/11/1979 |
| From: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Johari Moore SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| NUDOCS 7907020267 | |
| Download: ML19224C394 (1) | |
Text
g nec j/ [ (.-
18(
oq[o UNITED STATES
,h NUCLEAR REGULATORY COMMISSION
'o,g; h -... 3 HEGION V 74 g
1990 N. CALIFORNIA BOULEVARD
' % 'N d'
SUITE 202, WALNUT CREEK PLAZA
+e,e*
WALNUT CREEK, CALIFORNIA 94596 June 11,1979 Docket Nos. 50-361 50-362 Southern California Edison Company P. O. Box 800 2244 Walnut Grove Rosemead, California 91770 Attention: Mr. J. B. Moore Vice President Gentlemen:
This Information Notice is being issued to call to your attention an aspect of the Commission's regulations which IE inspectors have found is not always being fully implemented. No written response is required.
If you have questions regarding this matter, please contact me.
Sincerely,
/
.t
)
~
~
3, zg3,,,
~.
P/
E6g'e ken v
(Director
Enclosure:
IE Information Notice No. 79-14 cc w/ enclosures:
J. H. Drake, SCE 271 064 790702026 7
UNITED STATES fiUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 June 11, 1979 IE Information Notice No. 79-14 SAFETY CLASSIFICATION OF ELECTRICAL CABLE SUPPORT SYSTEMS Sunmary:
The liRC inspection staff has found that in several cases, facilities under construction have not applied the pertinent quality assurance requirements of 10 CFR 50, Appendix B to the design, procurement, and installation of cable trays and their support systems for Class Id 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.
Description of Circumstances:
1.
In the Commission's Regulations for Licensing of Production and Utilization Facilities - 10 CFR Part 50, Criterion 2 of Appendix A, states in part that " Structures, 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 Reactor Site Criter':, Part 100, Appendix A, define a " safe shutdown earthquake," (SSE) and generally identify the structures, systems and components which are required to renain fuactional 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 (emphasis added) are designated as Seismic Category 1 and should be designed to withstand the effects of the SSE and remain functional. The pertinent 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."
"C1.q.
The Class IE electric systems, including the auxiliary systems for the on-site electric power supplies, that provide the emergency electric power..."
No written response to this information notice is required.
If you have questions regarding the matter, please contact the Director of the appropriate NRC Regional Office.
DUPLICATE DOCUMENT 2.71 065 Entire document previously entered into system under:
ANO 7 hh2kOM No. of pages:
2.
u-.
.