ML20030B810
| ML20030B810 | |
| Person / Time | |
|---|---|
| Site: | Farley  |
| Issue date: | 08/05/1981 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML20030B802 | List: |
| References | |
| NUDOCS 8108240248 | |
| Download: ML20030B810 (2) | |
Text
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ENCLOSURE 6
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CONTAINMENT SYSTEMS
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LIMITING CONDITION FOR OPERATION J
k 3.6.1.7 The containment pu'rge supply and exhaust isolation valves may j!
be open for safety-related reasons [or shall-be locked closed]. The J
containment vent line isolation valves may be open for safety-related j
reasons [or shall be locked closed].
APPLICABILITY:
MODES 1, 2, 3, and 4.
ACTION:
(For plants with valves closed by. technical specification)
With one containment purge supply and/or one exhaust isolation valve open, close the open valve (s) within one hour or be in at least OT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the-iollowing 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
(For plants with valves that may be opened by technical specifications) 1.
With one containment purge supply and/or one exhaust isolation or vent valve inoperable, c10se the associated OPERABLE valve and either restcre the inoperable valve to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or lock the OPERABLE valve closed.
2.
Operation may then continue until performance of the next required valve test provided that the OPERABLE valve is veritied to be locked closed at least once per 31 days.
3.
Otherwise, be in at least HOT STANDBY within the next six hcurs and in COLD SHUTDOWN within tne following--30 -hours.
4.
The provisions of Specification 3.0.4 are not t.pplicable.
SURVEILLANCEREgUIREMENTS 4.6.1.7.1 The
-inch containment purge supply and exhaust isolation valves and the
-incF vent line isolation valves shall be determined locked closed at least7nce per 31 c'ays.
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4.6.1.7.2 The valve seals of the purge supply and exhaust isolation valves and the vent line isolatian valves shall be replaced at least one per _ years.
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1 3/4 6-10 l
8108240248 810805 PDR ADOCK 05000348 l
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CONTAINMENT SYSTEMS a
L 3/4 4.6.3 CONTAINMENT ISOLATION VALVES s
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LIMITING CONDITION FOR OPERATION P
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3.6.3 - The containment isolation valves specified in Table 3.6-1 shall be OPERABLE with isolation times as shown in Table 3.6-1.
APPLICABILITY: F0 DES 1, 2, 3 and 4.
ACTION:
With one or more of the isolation valves (s) specified in Table 3.6-1 inoperable,
' maintain at least one isolation valve OPERABLE in each affected penetration that is open and either:
a.
Restore the inoperable valve's) to OPERABLE status within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or i
b.
Isolate each affected penetration within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> by use of at least one deactivated automatic valve secured in the isolation position, or c.
!solate each affected penetration within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> by use of at least one closed manual valve or blind flange; or d.
Be in at least tGT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
SURVEILLANCE RE0VIPEMENTS 4.6.3.1 The isolation valves specified in Table 3.6-1 shall be demonstrated OPERABLE prior to returning the valve to service after maintenance, repair or replacement work is performed on the valve or its associated actuator, control or pc.ier circuit by performance of a cycling test, and verification of isola-tion time.
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CONTAINMENT SYSTEMS l:
f SURVEILLANCE REQUIREMENTS (Continued) 1 Ik l;
4.6.3.2 Each isolation valve specified in Table 3.6-1 shall be demonstrated l;
OPERABLE during the COLD SHUTDOWN or REFUELING MODE at least once per 18 l.
months by:
't a.
Verifying that on a Phase A containment isolation test signal, each Phase A isolation valve actuates to its isolation position.
g; b.
Verifying that on a Phase B containment isolation test signal, each Phase B isolation valve actuttes to its isolation position.
4.6.3.3 The isolation time of each power operated or automatic valve of Table 3.6-1 shall be determined to be within its limit when tested pursuant to Specification 4.0.5.
- 4. 6.3.4 The containment purge and vent isolation valves shall be demonstated OPERABLE at intervals not to exceed months. Valve OPERABILITY shall be determined by verifying that when the measured leakage rate is added to the leakage rates determined pursuant to Specification 4.6.1.2.d for all other Type B and C penetration, the combined leakage rate is less than or equal to 0.60La.
However, the leakage rate for the containment purge and vent isolation valves shall be compared to the previously measured leakage rate to detect excessive valve degradation.
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