ML17228B275
| ML17228B275 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 09/11/1995 |
| From: | NRC (Affiliation Not Assigned) |
| To: | |
| Shared Package | |
| ML17228B274 | List: |
| References | |
| NUDOCS 9509190341 | |
| Download: ML17228B275 (3) | |
Text
~R AECy 4(4
~
O~
0O IA0 S
t UNITED STATES NUCLEAR REGULATORY COlVIMlSSION WASH1NGTOH, D.C. 2055&0001 ON BY THE OF IC OF NUC REACTOR R
GU A IO RELAT 0
AM D
- 0. 139 TO ACILITY OP
!NG CENSE 0
1.0 INTRODUCTION
UCI UN DOCKET NO. 50-335 By letter dated Hay 23, 1994, Florida Power and Light Company (FPL), the licensee for St.
Lucie Unit 1, proposed to change their Technical Specifications (TS).
Specifically, the changes are proposed for TS 3.5.2, "Emergency Core Cooling Systems (ECCS)," to remove the option that allows High Pressure Safety Injection (HPSI)
Pump 1C to be used as an alternative to the preferred HPSI pump for subsystem operability.
2.0 V LUATION The St. Lucie ECCS is capable of mitigating the consequences of a loss of coolant accident (LOCA) as set forth by the criteria in 10 CFR 50.46.
The licensee indicated that the minimum requirement to meet the criteria is one high pressure and one low pressure safety injection pump along with its associated piping and valves.
Currently, the St. Lucie ECCS consists of two independent and redundant trains, A-train which includes HPSI pump A powered by 4160V emergency bus lA3, and B-train which includes HPSI pump B powered by 4160V emergency bus 1B3.
The third pump, HPSI pump 1C, is an installed spare and is capable of being aligned to the B HPSI header.
The licensee indicated that the Unit 1 safety analyses do not take credit for HPSI pump 1C.
It is only required to be operable as a spare for the B-train pump.
The HPSI pump 1C is energized via the 1AB swing-bus, only when it is powered by Emergency Bus 1B3.
This configuration is necessary to maintain the redundant but independent requirement of 10 CFR 50.46.
The licensee is proposing to remove the requirement to maintain HPSI pump 1C as an installed spare, based on the ECCS requirements being fulfilled by the A and B trains.
The licensee indicated in a teleconference on August 23,
- 1995, that they have no intention of returning the HPSI pump 1C to service.
The pump had bee'n valved-off from the ECCS and the motor has been disconnected.
3.0 IEEGH IC L FINDIN The staff has reviewed the licensee's proposal to remove the option to use the 1C HPSI in lieu of 1B HPSI.
Based on the licensee's submittal the requirements of 10 CFR 50.46 are met by the two ECCS trains A and B, and the HPSI pumps lA and 18 are 100X capacity pumps.
The licensee has also assured 9509i9034i 9509ii PDR ADQCK 05000335 P
the staff that the HPSI pump 1C will not be returned to service.
Therefore, the staff finds the licensee's proposal to delete the pump delineation from TS 3.5.2.a acceptable.
4.0 BIIAO~SU M
Based upon the written notice of the proposed amendment, the Florida State official had no comments.
5.0 NVI 0 N
CONSIDERAT 0 This amendment changes a requirement with respect to installation or use of a facility component located within the restricted area as defined in 10 CFR Part 20.
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 (59 FR 34663).
Accordingly, these amendments meet the eligibilitycriteria 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 be prepared in connection with the issuance of these amendments.
6.0 CONCLUSION
The Commission has 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, (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 and security or to the health and safety of the public.
Principal Contributor:
S. Brewer Date:
September ll, 1995
IJ t