ML20205R061
| ML20205R061 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/31/1987 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20205R055 | List: |
| References | |
| NUDOCS 8704060196 | |
| Download: ML20205R061 (3) | |
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o UNITED STATES NUCLEAR REGULATORY COMMISSION g
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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT N0. 127 TO FACILITY OPERATING LICENSF NO. DPR-50 i
NETROPOLITAN EDISON COMPANY JEPSEY CENTRAL POWER AND LIGHT COMPANY PENNSYLVANIA ELECTRIC COMPANY GPU NUCLEAR CORPORATION i
THREE MILE ISLAND NUCLEAR STATION, UNIT NO. 1 i
DOCKET N0. 50-289 INTRODUCTION By letter dated January 28, 1987, GPU Nuclear Corporation (GPUN or the licensee) requested amendment to the Technical Specifications (TSs) appended to Facility Operatino License No. DPR-50 for the Three Mile island Nuclear Station, Unit No.1 (TMI-1). The proposed amendment would expand fire prntection TS operability requirements for TMI-l fire detection and suppression systems as part of commitments to satisfy 10 CFR 50, Appendix R.
EVALUATION TMI-1 fire cetection and suppression systems in the Auxiliary, Fuel Pandling, Intermediate, and Control Buildings were modified to satisfy 10 CFR 50, Appendix R, commitments approved by the NRC in Safety Evaluations dated i
June 4, 1984, and December 30, 1986. Additional fire detection i
instrumentation and suppression, installed to comply with 10 CFR 50, Appendix R, requirements, are defined in Revision 8 of the "TMI-1 Fire Hazards Analysis Report and Appendix R Section III.G Safe Shutdown Evaluation (FHAR)".
The scope of these fire protection system modifications affecting the TSs is as follows:
a)
Existing fire detection system in the Auxiliary Building was expanded to monitor an additional area of the hallway on elevation 281' in fire zone AB-F7-5 (see TS Table 3.18-1, item 10),
b)
Existing fire detection system currently installed in the Control Building elevation 306' was expanded to monitor fire zone FH-F7-6, the chiller room elevation 285' (see TS Table 3.18-1, item 4).
'I c)
Existing fire detection system currently installed in the Intermediate Building (IB) was expanded to monitor the hallway portion of fire zone IB-FZ-4 on elevation 295' (see TS Table 3.18-1, item 12).
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4 d)
Existing fire detection system in the Control Buildino was expanded to monitor the emergency feedwater ((FW) cabinets located in the Control Room (see TS Table 3.18-1. Item 1).
This modification is to satisfy commitments made concerning NRC Branch Technical Position (BTP) APCSB 9.5-1, Appendix A.
e)
Auxiliary Buildino fire detection system on elevations 281' and 305' was i
revised to reflect the existing cross zone detection configuration by dividing Zone 1 into Zone 1A and Zone 18 (see TS Table 3.18-1, items 10 and 11),
f)
The manually actuated deluge water spray system in AB-FZ-5 (Auxiliary Building containment penetration area at elevation 281') was converted to an automatically actuated preaction sprinkler system. A water 1
curtain system was installed to separate redundant equipment in AB-FZ-6 at elevation 305' (see TS Section 3.18.3.1.1).
GPUN's amendment application (TSCR-169) reouested certain changes to TS Table 3.18-1 (Items 1, 4, 10, 11 and 17) and TS Section 3.18.3.1 (Item 1) in order to incorporate the Appendix R modifications listed above. These additional fire protection instrumentation and suppression operability requirements were proposed to further ensure adequate warning system capability is available for prompt detection of fires and adequate fire suppression capability is available to confine and extinguish fires in order to minimize potential l
damage to safety-related equipment.
4 in conjunction with the particular TS change to incorporate the Appendix R modification identified as d) above, GPUN proposed to further revise TS Table 3.18-1, Item 1 (Control Building Elevation 355') by clarifyino detector locations and increasing the minimum number required operable. Detector locations would no longer be specifically identified by panel (i.e., HCV, CC
& CR, PC & PCR, PL, and the new EF panel installed this outage) but rather as l
" Control Room Cabinets". Conversely, detectors located in the Computer Room would now be identified as to their more specific locations (e.g. I&C Mod Comp Area).. In all respects, the proposed TSs would increase the minimum number of detectors required to be operable for Control Room Cabinets and for Control Poom Area (minimum operable remain the same for computer room areas).
Increasing the minimum number of detectors was considered.as additional assurance that adequate warning capability is available for prompt detection of fires in these areas. However. as stated by GPUN, redefining detector locations should not have any impact on nuclear safety or safe plant operation.
Furthermore, aside fron Appendix R related TS changes, GPUN has proposed to correct two typographical and editorial errors in TS 3.18.7 (Fire Barrier 1
Penetration Seals). The spelling of " campers" would be corrected to " dampers" and the BASES would be corrected to delete reference to a roving fire watch since TS 3.18.7.Pa provides a requirement for a continuous fire watch only.
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. 3 Af ter a detailed review of GPUN's amendment application dated January 28, 1987, the NRC staff concludes that the, proposed TS changes are acceptable.
The changes serve to upgrade the TSs to include commitments made to satisfy 10 CFR 50, Appendiy R.
STATE CONSULTATION in accordance with 10 CFR 50.91(b), we have fulfilled our responsibilities with regard to consultation with the State. The State was contacted on March 13, 1987, and had no comments.
ENVIRONMENTAL CONSIDERATION r
This amendment involves changes in the installation or use of facility components located within the restricted area as defined in 10 CFR Part ?0.
We have determined that the amendment involves 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 this amendment involves no significant hazards consideration and there has been no public comment on such finding. Accordingly, this amendment meets the eligibility criteria for 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 he prepared in connection with the issuance of this amendment.
CONCLUSION We have concluded, based on the considerations discussed above, that: (1) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, and (2) such activities will be conducted in compliance with the Commission's reeulations and the issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public.
Dated:
March 31, 1987 Principal Contributor:
T. Ross i