ML041410144
| ML041410144 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 05/18/2004 |
| From: | NRC/NRR/DLPM/LPD2 |
| To: | |
| Mozafari B,l NRR/DLPM, 415-2020 | |
| Shared Package | |
| ML041400287 | List: |
| References | |
| TAC MC0119 | |
| Download: ML041410144 (2) | |
Text
Nuclear Services Seawater System 3.7.9 3.7 PLANT SYSTEMS 3.7.9 Nuclear Services Seawater System LCO 3.7.9 Two Nuclear Services OPERABLE.
Seawater System trains shall be APPLICABILITY:
MODES 1, 2, 3, and 4.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One Nuclear Services A.1 Restore Nuclear 72* hours Seawater System train Services Seawater inoperable.
System train to OPERABLE status.
B. Required Action and B.1 Be in Mode 3 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> associated Completion Time not met.
AND B.2 Be in Mode 5.
36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />
- On a one-time basis, a Nuclear Services Seawater System train may be inoperable for up to 10 days to allow performance of Nuclear Services Seawater System Emergency Pump RWP-2A or RWP-2B repairs.
The ability to apply the 10-day Completion Time will expire on December 30, 2004.
Amendment No.
212 Crystal River Unit 3 3.7-19
Nuclear Services Seawater System B 3.7.9 BASES LCO The requirement for the OPERABILITY of the Nuclear Services Seawater System including two emergency nuclear services seawater pumps provides redundancy necessary to ensure the system will provide adequate post-accident heat removal in the event of a coincident single failure.
Emergency nuclear services seawater pump OPERABILITY requires that each be capable of being powered from separate OPERABLE emergency buses. OPERABILITY of the associated flow paths requires that each valve in the flow path must be aligned to permit sea water flow from the intake canal to the SW heat exchangers, and subsequently to the discharge canal. The OPERABILITY of the SW heat exchangers, required to ensure proper heat removal capability, is addressed 'in LCO 3.7.7, "Nuclear Services Closed Cycle Cooling Water System".
APPLICABILITY In MODES 1 through 4 the SW and Nuclear Services Seawater Systems are normally operating systems which must be prepared to provide post-accident cooling for components required for RCS and containment heat removal, equipment essential in providing the capability to safely shutdown the plant, and equipment required for adequate spent fuel pool cooling. The Nuclear Services Seawater System must be capable of providing its post-accident cooling assuming a single active failure. Therefore, both emergency pumps are required to be OPERABLE during these MODES.
In MODES 5 and 6, the Nuclear Services Seawater System is not required to be OPERABLE due to the limitations on RCS temperature and pressure in these MODES. Additionally, there are no other Technical Specification LCOs supported by the system which are applicable during these plant conditions.
ACTIONS A.1 With one of the Nuclear Services Seawater pumps inoperable, action must be taken to restore the pump to OPERABLE status within 72* hours. The 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> Completion Time for restoring full Nuclear Services Seawater System OPERABILITY is consistent with that for ECCS Systems, whose safety functions are supported by the system. This Completion Time is based on engineering judgement and is consistent with accepted industry-accepted practice.
- On a one-time basis, a Nuclear Services Seawater System train may be inoperable for up to 10 days to allow performance of Nuclear Services Seawater System Emergency Pump RWP-2A or RWP-2B repairs. The ability to apply the 10-day Completion Time will expire on December 30, 2004.
(continued)
Crystal River Unit 3 B 3.7-48 Amendment No. 212