ML13322A575
| ML13322A575 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 08/16/1979 |
| From: | Ziemann D Office of Nuclear Reactor Regulation |
| To: | James Drake SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| TASK-03-02, TASK-03-03.A, TASK-03-07.B, TASK-3-2, TASK-RR NUDOCS 7909100573 | |
| Download: ML13322A575 (4) | |
Text
'RESUIATOI'
_KET Ak CO2 ocet5-206 PO'Connor 499 HSmi th AUG 16 1979 Local PDR DCrutchfield ORB#2 RDG JRBuchanan NRR RDG TERA DEisenhut ACRS(16)
Docket No. 50-206 RVollmer BGrimes WGammill Mr. James H. Drake JMiller Vice President LShao Southern California Edison Company TCarter 2244 Walnut Grove Avenue OELD Post Office Box 800 OI&E(3)
RosePead, California 91770 O(C Roseead Calforia 9770DLZi emann
Dear Mr. Drake:
RE-REQUEST FOR ADDITIONAL INFORMATIO!
SYSTEMATIC EVALUATION PROGRAM STRUCTURAL TOPICS SAN ONOFRE NUCLEAR GENERATING STATION To continue our review of the Systematic Evaiuation Program structural topics, we request that you provide the information described in the enclosure for each of the identified topics.
Your response is requested within 30 days so that we can maintain our review schedule.
Sincerely, Original Signed by:
Dennis L. Ziemann Dennis L. Ziemann, Chief Operating Reactors Branch #2 Division of Operating Reactors
Enclosure:
Request for Additional Information cc w/enclosure:
See next page one DOR:ORB#2 DOR:0RB#2 IAU)).
........ /.7 4FORM 31 PO Connor:sh DLZiemann 3IEHRMA18 NR M0*
u.s.
oovPRIuNTIenGn oPPICK: 1978 -20s
- 76*
Mr. James H. Drake 2
August 16, 1979 cc Charles R. Kocher, Assistant General Counsel Southern California Edison Company Post Office Box 800 Rosemead, California 91770 David R. Pigott Samuel B. Casey Chickering & Gregory Three Embarcadero Center Twenty-Third Floor San Francisco, Califo'rnia 94111 Jack E. Thomas Harry B. Stoehr San Diego Gas & Electric Company P. 0. Box 1831 San Diego, California 92112 U. S. Nuclear Regulatory Commission ATTN:
Robert J. Pate P. 0. Box 4167 San Clemente, California 92672 Mission Viejo Branch Library 24851 Chrisanta Drive Mission Viejo, California 92676 K M C Inc.
ATTN:
Mr. Richard E. Schaffstall 1747 Pennsylvania Avenue, N. W.
Suite 1050 Washington, D. C. 20006
ENCLOSURE REQUEST FOR ADDITIONAL INFORMATION SAN ONOFRE NUCLEAR GENERATING STATION STRUCTURAL TOPICS Additional information is needed for the following structural topics:
111-2 Wind and Tornado Loads For each safety-related structure, provide the original design basis of the wind and tornado loadings including, (1) for wind load, the procedures to transform wind data to design pressure and gust factor, (2) for tornado load, the maximum rotational wind speed, translational wind speed, pressure drop, radius of maximum rotational wind speed and procedures to transform tornado data into design pressure.
III-3.A Effects of High Water Level on Structures For each safety-related structure, (1) provide the original design basis water loads including any dynamic effects considered, (2) clarify the water loads considered in the wall design for each load combination discussed in Topic III-7.B, (3) explain how the ground water pressure on the embeded part of the steel containment was considered.
III-7.B Design Codes, Design Criteria and Load Combination For each safety-related structure, (1) list the codes and standards (including edition date) used for the design and construction of concrete and steel elements, (2) provide the loads, load combinations and acceptance criteria employed for the design, (3) provide the design and/or actual material properties (fc and fy) used for the concrete and steel elements. For concrete, provide the age specified and any admixtures used, (4) provide a copy of the design specification used for construction,
ENCLOSURE
-2 (5) describe the buckling criteria used for design of the steel containment, (6) provide representative stress levels (compression, tension, and shear) at the critical locations of each structure (e.g.,
base of the internal structures) for each of the load combinations provided in response to (2) above.