ML14135A237
| ML14135A237 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 11/16/1981 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Dietch R SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| TASK-03-06, TASK-3-6, TASK-RR LSO5-81-11-021, LSO5-81-11-21, NUDOCS 8111190337 | |
| Download: ML14135A237 (3) | |
Text
Docket No. 50-206 LSO5-81 Mr. R. Dietch, Vice President Nuclear Engineering and Operations Southern California Edison Company 2244 Walnut Grove Avenue Post Office Box 800 V
Rosemead, California 91770
Dear Mr. Dietch:
SUBJECT:
SEP TOPIC 111-6, SEISMIC DESIGN CONSIDERATIONS SAN ONOFRE UNIT 1 Our letters to you dated August 4, 1980 and April 24, 1981 requested in accordance with 10 CFR 50.54(f) of the Commission's regulations that you submit plans and proceed with a seismic reevaluation program for the San Onofre Unit 1 facility and that you provide justification for your conclusion that continued operation is justified in the interim until the seismic reevaluation and any necessary up grading is complete. We have reviewed your seismic reevaluation program forwarded by your letters dated September 24, 1980, February 23, 1981, July 7, 1981, August 11, 1981, September 28, 1981, October 5, 1981, and October 19, 1981.
We have reviewed your basis for continued operation and have concluded that con tinued operation is justified under the following conditions: (1) structural upgrading of the North and West Turbine Building Extensions and West Heater Plat form by adding diagonal steel bracing is completed by June 1, 1982 or the facility is to be shut down; (2) results of seismic analysis of structures are submitted for NRC review in November 1981 and for all other items on the schedule specified in the licensee's July 7, 1981 letter; (3) any modifications shown to be necessary as a result of the seismic analysis which are not implemented by January 1, 1983 are justified on a case by case basis with a schedule for implementation and (4) prior to upgrading of the North Turbine Building Extension, either the Turbine Building crane is to be parked over the South Extension or the reactor is to be shut down during periods when crane movement is required.
Enclosed is our Safety Evaluation Report.
/
- e.
r r 803 kSincerely, X-,MCSt~rDL:DIR
.0. i"s e'dty&
Dennis M. Crutchfield, Chief
-f\\
(8111190337811116, Operating Reactors Branch No. 5
/81 PDR ADOCK 05000206 1 Division f Licensing
~~PDR
)_
f_
JLYr~YJfiL~PBCMDL:
PM Dl-,ORB #5/C DL:AD/SA IDE:AD/CSE OFFICES closure:6h~r WRO-s-s651%"
S UCfu7t1Yfiefd GCLAfa jKT SRAE...
sttd..............
........ 1 DATE...................
NRC FORM 318 (10-80) NRCM 0240 OFFICIAL RECORD COPY USGPO: 1981-335-960
Docket No. 50-206 LS05-81 Mr. R. Dietch, Vice President Nuclear Engineering and Operations Southern California Edison Company 2244 Walnut Grove Avenue Post Office Box 800 Rosemead, California 91770
Dear M1r. Dietch:
SUBJECT:
SEP TOPIC 111-6, SEISMIC DESIGN CONSIDERATIONS SAN ONOFRE UNIT 1 Our letters to you dated August 4, 1980 and April 24, 1981 requested in accordance with 10 CFR 50.54(f) of the Commission's regulations that you submit plans and proceed with a seismic reevaluation program for the San Onofre Unit 1 facility and that you provide justification for your conclusion that continued operation is justified in the interim until the seismic reevaluation and any necessary up grading is complete. We have reviewed your seismic reevaluation program forwarded by your letters dated September 24, 1980, February 23, 1981, July 7, 1981, August 11, 1981, September 28, 1981, October 5, 1981, and October 19, 1981.
We have reviewed your basis for continued operation and have concluded that con tinued operation is justified under the following conditions: (1) structural upgrading of the North and West Turbine Building Extensions and We-st Heater Plat form by adding diagonal steel bracing is completed by June 1, 1982 or the facility is to be shut down; (2) results of seismic analysis of structures are submitted for NRC review in November 1981 and for all other items on the schedule specified in your July 7, 1981 letter; (3) any modifications shown to be necessary as a result of the seismic analysis which are not implemented by January 1, 1983 are justified on a case by case basis with a schedule for implementation and (4) prior to upgrading of the North Turbine Building Extension, either the Turbine Building crane is to-be parked over the South Extension or the reactor is to be shut down during periods when crane movement is required.
Enclosed is our Safety Evaluation Report.
Sincerely,
- See previous yellow for additional concurrences.
D:DL DEisenhut Dennis M. Crutchfield, Chief 10/ /81 Operating Reactors Branch No. 5 OFFICE SEPB:DL SEPB:DL ORB#5:DL:PM 0 AD:SA:DL AD E
E I_...
!_ g._..,
SURNAMEf
Enclosure:
RHermann:dkl WRussell*
SNowicki*
D 1cie(
GLainas JP ight S R AME...
v r e...
ATE..
10/26/81 10/26/81 10/26/81 102 L/81 10/
/81 10
/81 NRC FORM 318 (10-80) NRCM 0240 OFFICIAL RECORD COPY USGPO: 1981-335-960
November 16, 1981 Docket No. 50-206 LS05-81-11-021 Mr. R. Dietch, Vice President Nuclear Engineering and Operations Southern California Edison Company 2244 Walnut Grove Avenue Post Office Box 800 Rosemead, California 91770
Dear Mr. Dietch:
SUBJECT:
SEP TOPIC 111-6, SEISMIC DESIGN CONSIDERATIONS SAN ONOFRE UNIT 1 Our letters to you dated August 4, 1980 and April 24, 1981 requested in accordance with 10 CFR 50.54(f) of the Cormission's regulations that you submit plans for and proceed with a seismic reevaluation program for the San Onofre Unit I facility and that you provide justification for your conclusion that continued operation is justified in the interim until the seismic reevaluation and any necessary up grading iscomplete. We have reviewed your seismic reevaluation program forwarded by.your letters dated September 24, 1980, February 23, 1981, July 7, 1981, August 11, 1981, September 28, 1981, October 5, 1981, and October 19, 1981.
We have also considered the commitments you have made in your letter dated November 3, 1981.
We have reviewed your basis for continued operation and have concluded that con tinued operation is justified under the following conditions: (1) structural upgrading of the North Turbine Building Extension and West Heater Platform by adding diagonal steel. bracing is to be completed by June 1, 1982 or the facility is to be shut down until such upgrading is completed; (2) results of seismic analysis of structures are to be submitted for NRC review by January 31, 1982, and for all other items on the schedule specified in your November 3, 1981 letter; (3) any modifications shown to be necessary as a result-of the seismic analysis which are not implemented by January 1, 1983 are to be justified on a case by case basis with a schedule for Implementation; and (4) prior to upgrading of the North Turbine Building Extension and West Heater Platform, either the gantry crane is to be parked at the extreme south limit of travel or the reactor -is to be shut down during periods when crane movement is required.
Enclosed is our related Safety Evaluation Report.
- See previous yellow for additional
- increly, AD:SA:DL AD:SCE:DE DE:GB QELD D:DL GLainas*
JPKnight*
RJackson DEisenhut 10/28/81 11/1/81 11/1/81 10/28/81 11/ /81 SEPB:DL SEPB:DL S B:DL Dennis M. Crutchfield, Cif B#J:DL:PM 0RB#5:DL:C OFFICE) a........................
RHermann:dk* WRussell*
Division of Li SNowicki*
DCrutchfield' 110/26/81 10/26/81 NRC FORM 318.(-0&Y40 OFFICIAL RECORD COPY USGPO: 1981-335-960