ML20083C171
| ML20083C171 | |
| Person / Time | |
|---|---|
| Site: | Hope Creek  |
| Issue date: | 05/04/1995 |
| From: | Public Service Enterprise Group |
| To: | |
| Shared Package | |
| ML20083B961 | List: |
| References | |
| NUDOCS 9505150162 | |
| Download: ML20083C171 (2) | |
Text
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CONTAINMENT SYSTEMS m
l DRYWELL AND SUPPRESSION CHAMBER PURGE SYSTEM LIMITING CONDITION FOR OPERATION SGO 3.6.1.8 The drywell and suppression chamber purge s es, including the 6-inch
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nitrogen supply line, may be in operation for up to hours each 365 days with the supply and exhaust isolation valves in one supply line and one exhaust line open for containment prepurge cleanup, inerting, deinerting, or pressure control."
APPLICA8ILITY: OPERATIONAL CONDITIONS 1, 2 and.3.
ACTION:
With a dry /or the nitrogen supply valve open, except as permitted above,we a.
valve and close the valve (s) or otherwise isolate the penetration (s) within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN.
within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
- b. ~ With a drywell purge supply or exhaust isolation valve, or a suppression chamber purge supply or exhaust isolation valve or the nitrogen supply valve, with resilient material seals having a seasured leakage rate exceed-ing the limit of Surveillance Requirement 4.6.1.8.2, restore the inoperable l valve (s) to OPERA 8LE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
i SURVEILLANCE REQUIREMENTS 4.6.1.8.1 Before being opened, the drywell and suppression chamber purpe supply and exhaust, and nitrogen supply butte ly isolation valves shal be verifled not to have been open for more than
- 0) hours in the previous 365 days."
ggg 4.6.1.8.2 At least once per 6 months **, but no more than once per 92 days ***,
the 26-inch drywell purge supply and exhaust isolation valves and the 24-inch suppression chamber purge supply and exhaust isolation valves and the 6-inch nitrogen supply valve with resilient material seals shall be demonstrated OPERABLE by verifying that the esasured leakage rate is less than or equal to 0.05 L, per penetration when pressurized to P,48.1 psig.
500
- Valvesopenforpressurecontrolarenotsejecttothe hours per 365 i
days limit, provided the 2-inch bypass lines are.being ined.
- provided that the valve has not been operated since the previous test.
- Applies only to a valve which has been operated since the previous test.
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HOPE CREEK 3/4 6-11 AmenAmont Noz 16 9505150162 950504 PDR ADOCK 05000354 P
PDR l
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CONTAINMENT SYSTEMS BASES 3/4.6.1.5 PRIMARY CONTAINMENT STRUCTURAL INTEGRITY This limitation ensures that the structural integrity of the containment will be maintained comparable to the original design standards for the life of the unit. Structural integrity is required to ensure that the containment will withstand the maximum pressure of 48.1 psig in the event of a LOCA. A visual inspection in conjunction with Type A leakage tests is sufficient to demonstrate this capability.
3/4.6.1.6 DRYWELL AND SUPPRESSION CHAMBER INTERNAL PRESSURE l
The limitations on drywell and suppression chamber internal pressure ensure that the containment peak pressure of 48.1 psig does not exceed the design pressure of 62 psig during LOCA conditions or that the external pressure differential does not exceed the design maximum external pressure differential of 3 psid. The limit of -0.5 to +1.5 psig for initial positive containment pressure will limit the total pressure " 48.1 psig which is less than the design pressure and is consistent with the safety analysis.
3/4.6.1.7 DRYWELL AVERAGE AIR TEMPCRATURE The limitation on drywell average air temperature ensures that th'e containment peak air temperature does not exceed the design temperature of 340*F during LOCA conditions and is consistent with the safety analysis. The 135'F average temperature is conducive to normal and long term operation.
3/4.6.1.8 ORYWELL AND SUPPRESSION CHAMBER PURGE SYSTEM
[the6"ni The 0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br /> /365 days limit for the operation of the purge valves and gen suppij valve durin plant Operational Conditions 1, 2 and 3 is intended to reduce the probabil ty of a LOCA occurrence during the above operational conditions when the applicable combination of the above valves are open.
Blow-out panels are installed in the CPCS ductwork to provide additional assurance that the FRVS will be capable of performing its safety function subsequent to a LOCA.
l HOPE CREEK B 3/4 6-2 Amen & ment No.16
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