ML20040A183

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Proposed Tech Specs Re long-term Operability Review of Containment Purge & Venting Sys
ML20040A183
Person / Time
Site: Cooper Entergy icon.png
Issue date: 12/31/1981
From:
NEBRASKA PUBLIC POWER DISTRICT
To:
Shared Package
ML20040A182 List:
References
NUDOCS 8201200482
Download: ML20040A183 (2)


Text

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LD11 TING CONDITIONS FUR OPERATION SURVEILIANCE REQUIREMENTS 3.7.C (ccr.t'd.)

4.7.C (cont'd.)

a.

The reactor is subcritical and Speci-a.

A preoperational secondary contain=ent fication 3.3. A is cet.

capability test shall be conducted af ter isolating the reactor building and b.

The reactor water temperature is below placing either standby gas treatment 212 F and the reactor coolant system system filter train in operation.

Such is vented.

tests shall demonstrate the capability to maintain 1/4 inch of water vacuum c.

No activity is being performed which under calm wind (2< E< 5 mph) conditions can reduce the rhutdown margin below with a filter train flow rate of not that specified in Specification 3.3.A.

more than 100% of building volume per day.

(p= wind speed) d.

Irradiated fuel is not being handled in the secondary containment, b.

Additional tests shall be performed during the first operating cycle under e.

If seconda ry containment integrity an adequate nu=ber of dif ferent envir-cannot be maintained, restore onmental wind conditicas to enable secondary containment integrity valid extrapolation of the test results.

within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or; c.

Secondary containment capability to a.

Be in at least not Shutdown maintain 1/4 inch of water vacuum within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and under calm wind (2< U< 5 mph) condition in cold shutdown within the with a filter train flow rate of not f ollowing 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

more than 100% of building volume per day, Shall be demonstrated at b.

Suspen3. irradiated fuel handling each refueling outage prior to operations in the secondary con-refueling.

tainment and all core alterations and activities which could reduce d.

After a secondary containment viola-the shutdown margin. The pro-tion is determined, the standby gas visions of Specification 1.0.J treatment system will be operated are not applicabic.

immediately after the affected zones are isolated from the remainder of the secondary containment to confirm its ability to maintain the remainder of the secondary containment at 1/4 inch of water negative pressure under calm wind conditions.

D.

Primary Containment Isolation Valves D.

Primary Containment Isolation Valves 1.

During reactor power operating condi-1.

The primary containment isolation tions, all isolation valves listed in valves surveillance shall be performed Table 3.7.1 and all instrument line as follows:

flow check valves shall be operable except as specified in 3.7.D.2.

a.

At least once per operating cycle the operable isolation valves that are power operated and automatically initiated shall be tested for simulated automatic initiation and closure times.

A valve closure test and verification of closure time shall also be performed

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prior to returning a valve to service after maintenance, repair or replacemen:

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LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 3.7.D (cont'd.)

4.7.D (cont'd.)

work is performed on the valve er its associated actuator, control or power circuit.

b.

At least once per quarter:

(1) All normally open power operated isola-tion valves (except for the main steam line power-operated isolation valves) shall be fully closed and reopened.

(2) With the reactor power less than 75%,

trip main steam isolation valves individually and verify closure time.

c.

At least once per week the main steam line power-operated isolation valves shall be exercised by partial closure and subsequent reopening.

d.

At least once per operating cycle the operability of the reactor coolant system instrument line flow check valves shall be verified.

e.

The valve seals of the primary contain-1 ment and Suppression Chamber Purge and Vent valves shall be replaced at least once per 7 operating cycles.

2.

In the event any isolation valve 2.

Whenever an isolation valve listed in specified in Table 3.7.1 becomes Table 3.7.1 is inoperable, the position inoperable, reactor power operation of at least one other valve in each may continue provided at least one line having an inoperable valve shall valve in each line having an inop-be recorded daily.

erable valve shall be in the mode corresponding to the isolation condi-tion.

If the inoperable valve is not returned to the operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, tag the operable valve closed. Operation may then con-tinue until performance of the next required valve test specified in 4.7.D.l.a.

3.

If Specification 3.7.D.1 and 3.7.D.2 cannot be met, an orderly shutdown shall be initiated and the reactor shall be in the Cold Shutdown condition within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

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