ML20198H608
| ML20198H608 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 01/09/1998 |
| From: | Nunn D SOUTHERN CALIFORNIA EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20198H613 | List: |
| References | |
| NUDOCS 9801130349 | |
| Download: ML20198H608 (2) | |
Text
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January 9, 1998 4
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U.' S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C.
20555 Gentlemen:
Subject:
Docket.Nos. 50-361 and 50-362 Amendment Application Nos.152 and 136, Supplement 1
+
Extension of the Completion Time for Safety Injection Tanks San Onofre Nuclear Generating Station Units 2 and 3
Reference:
CE0G CE NPSD 994 " Joint Applications Report for Safety Injection System Tank A0T/STI Extension," May 1995 Enclosed are Amendment Application Nos.152 and 136, Supplement I to Facility Operating Licenses NPF-10 and NPF-15 for the San Onofre Nuclear Generating Station Units 2 and 3, respectively. These amendment applications consist of Proposed Change Number (PCN)-451,~ Supplement 1.
PCN-451 proposes to modify Technical Specification (TS)' 3.5.1 to extend the Completion Time for a single inoperable Safety Injection Tank (SIT) from 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Additionally, PCN-451 proposes to extend the SIT Completion Time from I hour to 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />s-if a single Sil.scomes inoperable due to malfunctioning water level indication or nitrogen cover pressure indication or both.
. Supplement 1addsanewTS5.5.2.14,"ConfigurationRiskManagemen(Program."
The. purpose of the Configuration Risk Management Program (CRMP) is to ensure that-a proceduralized Probabilistic Risk Assessment-informed. process is in place.that assesses the overall impact of plant maintenance on plant risk.
Implementation of the CRMP will enable appropriate. actions to b,e taken or-decisions to be made to minimize and control risk when performing on-line
-maintenance for Systems,' Structures, and Components with a risk-informed
. Completion Time.
Proposed TS 5.5.2.14,uill be applicable to TS 3.5.1 because the Completion Times for TS 3.5.1 have " risk-informed Completion Times."
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' deterministic and design basis considerations, and~ plant _ risk, as well 'as
-previous _ generic _ studies and conclusions from the NRC staff in NUREG-1366,
" Improvements to Technical Specifications Surveillance Requirements," and NL' REG-1432. " Standard Technical Specifications Combustion Engineering Plants."
The above refe'rence,-which was submitted to the NRC staff for review and-
_ approval under separate cover, supports this change.
Socthern California Edison (SCE) requests this amenament be issued effective as of its date of issuance, and be-implemented-within 30 days from the-date of issuance.
This will provide adequate time for the necessary procedure changes and training on the new Technical Specifications.
SCE~ requests the NRC audit the Configuration Risk Matiagement Program prior to
~ approval and implementation of TS 5.5.2.14.
If you.would like additional information on this Technical Specification change request, please let me know.
Sincerely, '
Q-f-
i Enclosures j
.cc:
E. W. Merschoff, Regional Administrator, NRC Region IV K. E. Perkins, Jr., Director, Walnut Creek Field Office, NRC Region IV J. A. Sloan, NRC Senior Resident inspector, San Onofre Units 2 & 3 H. B. Fields, NRC Project Manager, San Onofre Units 2 and 3 S. Y. Hsu, Department of Health Services, Radiologic Health Branch l-l
_