ML20035G464
| ML20035G464 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 04/20/1993 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20035G461 | List: |
| References | |
| NUDOCS 9304270276 | |
| Download: ML20035G464 (3) | |
Text
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,f WASmNGTON. D.C. 20555 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT N05. 60 AND 25 TO FACILITY OPERATING LICENSE N05. NPF-39 AND NPF-85 PHILADELPHIA ELECTRIC COMPANY LIMERICK GENERATING STATION. UNITS 1 AND 2 DOCKET NOS. 50-352 AND 50-353
1.0 INTRODUCTION
By letter dated January 8, 1993, the Philadelphia Electric Company (the licensee) submitted a request for changes to the Limerick Generating Station (LGS), Units I and 2, Technical Specifications (TS). The requested changes would change TS Sections 4.3.7.9.1 and 4.3.7.9.2, " Fire Detection Instrumentation - Surveillance Requirements," and Bases Section 3/4.3.7.9,
" Fire Detection Instrumentation," for both units, to reduce the frequency of testing certain fire detection instrumentation. The revisions will substitute smoke and heat detectors requirements recommended by the 1990 Edition of the National Fire Protection Association (NFPA), Standard 72, in place of the pertinent requirements stated in earlier editions of the NFPA Standard.
2.0 EVALUATION The current TS surveillance requirements for fire detection instrementation which are accessible during unit operation, require that they be demonstrated operable at least once every 6 months. Also, the supervised circuits associated with the applicable detector alarms are required to be demonstrated operable at least once every 6 months.
The licensee has proposed a change to these requirements based on the recommendations stated in the NFPA, Standard 72, 1990 Edition.
The proposed changes define the fire detection instruments as smoke detectors, heat detectors, and all other fire detectors.
TS Section 4.3.7.9.1 addresses the requirements for smoke detectors.
PEco has proposed to change the functional testing from at least once per 6 months to at least once per 12 months. This change is consistent with the NFPA, Standard 72E, 1990 Edition. Also, TS Section 4.3.7.9.1 addresses the requirements for heat detectors. The licensee has proposed to change the current functional testing requirements from once every 6 months to once every 12 months. However, PEco has proposed an additional requirement that guaranties that all heat detectors will be te:ted within a 5-year period.
These requirements are consistent with the NFPA, Standard 72E, 1990 Edition.
The surveillance testing interval for all other types of fire detectors remains unchanged by the proposed TS changes.
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. TS Section 4.3.7.9.2 requires that the supervisory circuits associated with detector alarms be demonstrated operable at least once every 6 months.
PECo has proposed to change this testing frequency from at least every 6 months to at least every 12 months.
This change is also consistent with the requirements of NFPA, Standard 72, 1990 Edition.
The fire detection system is not a safety-related system.
It provides early detection of a fire, and protects safety-related equipment.
Its failure does not affect any transient or accident evaluation, including the LGS fire safe shutdown analyses.
Also, the proposed changes do not impact on the design and performance requirements.
Further, the LGS fire protection program utilizes:
separation of redundant safety systems, an integrated network of components and equipment providing detection and suppression of fires, administrative controls and procedures, and personnel training.
1 The staff finds the requirements of NFPA Standards,1990 Edition, acceptable, i
as applicable to the proposed revisions in surveillance requirement for smoke detectors, heat sensors, and supervisory circuits.
Generic Letter (GL) 86-10, " Implementation of Fire Protection Requirement" and GL-88-12. " Removal of Fire Protection Requirements from the Technical Specifications" provided guidance on the adoption of the NRC-approved fire Protection Program in the plant Updated Final Safety Analysis Report (UFSAR),
and the approach for deleting the fire protection requirements from the TS.
PEco has indicted that they are aware of the above identified GLs and that they will provide an amendment request later this year.
Based on the above discussion, the staff finds the proposed revisions to TS Sections 4.3.7.9.1 and 4.3.7.9.2 acceptable.
3.0 STATE CONSULTATION
In accordance with the Commission's regulations, the Pennsylvania State official was notified of the proposed issuance of the amendments.
The State official had no comments.
4.0 ENVIRONMENTAL CONSIDERATION
The amendments change a requirement with respect to installation or use of a facility component located within the restricted area as defined in 10 CFR Part 20 and changes surveillance requirements.
The NRC staff has determined that the amendments involve no significant increase in the amounts, and no significant change in the types, of any effluents that may be released offsite, and that there is no significant increase in individual or cumulative occupational radiation exposure.
The Commission has previously issued a proposed finding that the amendments involve no significant hazards consideration, and there has been no public comment on such finding (58 FR 8777).
Accordingly, the amendments meet the eligibility criteria for
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categorical exclusion set forth in 10 CFR 51.22(c)(9).
Pursuant to 10 CFR 51.22(b) no environmental impact statement or environmental assessment need be prepared in connection with the issuance of the amendments.
5.0 CONCLUSION
The Commission has concluded, based on the considerations discussed above, l
that:
(1) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, (2) such activities will be conducted in compliance with the Commission's regulations, and (3) the issuance of the amendments will not be inimical to the common defense a"1 security or to the health and safety of the public.
l Principal Contributor:
F. Rinaldi Date: April 20, 1993 i
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