ML20248M110
| ML20248M110 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 06/08/1998 |
| From: | Clifford J NRC (Affiliation Not Assigned) |
| To: | Ray H SOUTHERN CALIFORNIA EDISON CO. |
| References | |
| REF-GTECI-***, REF-GTECI-NI, TASK-*****, TASK-OR NUDOCS 9806150003 | |
| Download: ML20248M110 (4) | |
Text
. _ - _ - _ _ _ _ _ _ _ _ _ - _ _ _ _. _ _ - - _ _ - _ _ _ - _ _ _ - - _ _ _ - _ _
l; A y
l June 8, 1998 4
Mr. Harold B. Ray Executive Vice President Southem Califomia Edison Company San Onofre Nuclear Generating Station P. O. Box 128 San Clemente, Califomia 92674-0128 i
SUBJECT:
REQUEST FOR INFORMATION TO SUPPORT RESOLUTION OF GENERIC -
SAFETY ISSUE (GSI) 165, " SPRING-ACTUATED SAFETY AND RELIEF VALVE RELIABILITY" -
Dear' Mr. Ray:
The NRC's Office of Nuclear Regulatory Research is currently in the process of resolving GSI 165. This GSI addresses whether failures of spring-actuated relief valves in safety-related support systems have the potential to cause substantial increases in plant core damage frequency (CDF), and what, if any, generic action may be appropriate. To assist the staff in its analyses, we request that you provide the information requested in the enclosure for the listed
. valves. This information is being requested to allow the staff to study the effects on CDF for generic plant types using available probabilistic risk assessment models.
This request for information is completely voluntary, and relates to the configuration and design of certain valves as they currently exist. There are no new requirements or staff positions contained in this request. We appreciate your assistance in this matter.
Please contact me at (301) 415-1352 if you have any questions.
Sincerely, ORIGINAL SIGNED BY-James W. Clifford, Senior Project Manager Project Directorate IV-2
/
'j Division of Reactor Projects lil/IV Office of Nuclear Reactor Regulation
/.
Docket Nos. 50-361 DISTRIBUTION:
~!
and 50-362
. Docket File OGC
[
. PUBLIC ACRS
Enclosure:
Requested Data for PD!V-2 R/F OGormley, RES SONGS Plant EAdensam TPGwynn, RIV WBateman GHammer cc w/ encl: See next page JClifford :
EPeyton DOCUMENT NAME: SOGSl165.LTR -
I OFC-PDIV-2/pM PDIV-2/LA.
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.o m NAME'
~JCllNord EPeytdii DATE 6/[ /98 6/ 4 /98 OFFICIAL RECORD COPY--
hhh &k CEN 9806150003 990MMI PDR ADOCK 05000361 PDR p.
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UNITED STATES g
, *j NUCLEAR REGULATORY COMMISSION o
WASHINGTON, D.C. 20666-0001 49*****
,o June 8, 1998 Mr. Harold B. Ray Executive Vice President 3
Southem Califomia Edison Company San Onofre Nuclear Generating Station P. O. Box 128 San Clemente, Califomia 92674-0128
SUBJECT:
REQUEST FOR INFORMATION TO SUPPORT RESOLUTION OF GENERIC SAFETY ISSUE (GSI) 165, " SPRING-ACTUATED SAFETY AND RELIEF VALVE RELIABILITY"
Dear Mr. Ray:
The NRC's Office of Nuclear Regulatory Research is currently in the process of resolving GSI 165. This GSI addresses whether failures of spring-actuated relief valves in safety-related support systems have the potential to cause substantial increases in plant core damage frequency (CDF), and what, if any, generic action may be appropriate. To assist the staff in its analyses, we request that you provide the information requested in the encicsure for the listed valves. This information is being requested to allow the staff to study the effects on CDF for generic plant types using available probabilistic risi; assessment models.
This request for information is completely voluntary, and relates to the configuration and design of certain valves as they currently exist. There are no new requirements or staff positions contained in this request. We appreciate your assistance iri this matter.
Please contact me at (301) 415-1352 if you have any questions.
Sincerely,
$tW
^
ames W. Clifford, Senior Project Manager Project Directorate IV-2 Division of Reactor Projects lil/lV Office of Nuclear Reactor Regulation Docket Nos. 50-361 4
and 50-362
Enclosure:
Requested Data for SONGS Plant cc w/ encl: See next page
4.
s I
Mr. Harold B. Ray,.
cc w/ encl:
l-Mr. R. W. Krieger, Vice President Resident inspector / San Onofre NPS Southem Califomia Edison Company clo U.S. Nuclear Regulatory Commission San Onofre Nuclear Generating Station Post Office Box 4329 P. O. Box 128 San Clemente, Califomia 92674 l
San Clemente, Califomia 92674-0128 Mayor Chairman, Board of Supervisors City of San Clemente County of San Diego 100 Avenida Presidio 1600 Pacific Highway, Room 335 San Clemente, Califomia 92672 San Diego, Califomia 92101 Mr. Dwi ht E. Nunn, Vice President 0
Alan R. Watts, Esq.
Southem Califomia Edison Company Woodruff, Spradlin & Smart San Onofre Nuclear Generating Station 701 S. Parker St. No. 7000 P.O. Box 128 Orange, Califomia 92668-4702 San Clemente, Califomia 92674-0128 l
Mr. Sherwin Harris Resource Project Manager Public Utilities Department City of Riverside 3900 Main Street Riverside, Califomia 92522 Regional Administrator, Region IV U.S. Nucleat Regulatory Commission Harris Tower & Pavilion 611 Ryan Plaza Drive, Suite 400 Arlington, Texas 76011-8064 l
Mr. Terry Winter Manager, Power Operations San Diego Gas & Electric Company P.O. Box 1831 l
San Diego, Cstifomia 92112-4150 l
Mr. Steve Hsu l
Radiologic Health Branch State Department of Health Services l
Post Office Box 942732 l
Sacramento, Califomia 94234 i
y L_______-_______________
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