ML13331A808

Proposed Tech Specs Re Containment Isolation Valves

ML13331A808
Person / Time
Site:	San Onofre
Issue date:	05/09/1985
From:	SOUTHERN CALIFORNIA EDISON CO.
To:
Shared Package
ML13331A806	List: ML13331A805 ML13331A807 ML13331A808
References
NUDOCS 8505130393
Download: ML13331A808 (4)

Text

Attachment 8 PROPOSED ThCHNICAL SPECIFICAVION 3.6.2 85O05130393 850509 POR ADOCK 05000206 PDR

3.6.2 CONTAINMENT ISOLATION VALVES APPLICABILITY:

MODES 1, 2, 3 and 4.

OBJECTIVE:

To provide assurance that the containment isolation valves listed in Table 3.6.2--1 will function when initiated by appropriate sensors.

SPECIFICATION:

rhe containment isolation valves specified in [able 3.6.2-1 shall be OPERABLE.

ACTION A.

With one or more of the isolation valves(s) specified in Table 3.6.2-1 inoperable, for each affected penetration that is provided with two isolation valves and is open maintain at least one valve OPERABLE, and For all affected penetrations with either one or two isolation valves, one of the following Actions shall be taken:

1.

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

2.

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* power operated valve secured in the isolation position, or

3.

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 closed manual valve or blind flange, or

4.

Be in at least HOT Sl'ANOBY 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 />.

B.

The provisions of Specification 3.0.4 are not applicable provided that within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> the affected penetration is isolated in accordance with Action A.2 or A.3 above, and provided that the associated system, if applicable, is declared inoperable and the appropriate ACTION statements for that system are taken.

BASIS:

The OPERABILITY of the containment isolation valves ensures that the containment atmosphere will be isolated from the outside environment in the event of a release of radioactive material to the containment atmosphere or pressurization of the containment. Containment isolation ensures that the release of radioactive material to the environment will be consistent with the assumptions used in the analyses for a LOCA.

Valve may be temporarily activated for valve position verification and testing. While the valve is activated by this note, Action A.1 shall be applied and any system(s) declared inoperable pursuant to Action B shall not be declared OPERABLE.

3-77

3.6.2 CONTAINMENT ISOLAIlON VALVES (continued)

[he isolation valves of the Sphere Purge Air Supply (POV-9) and Air Outlet (POV-10) lines have not been demonstrated capable of closure under the differential pressures generated by a design basis accident.

For this reason, containment isolation in these lines !hall be maintained.

This configuration shall be accomplished by locking closed manual isolation valves CVS-301 and CVS--313 of these lines.

These valves shall remain locked closed during MODES 1, 2, 3, and 4 until POV-9 and POV-10 can be.

demonstrated capable of performing their containment isolation function under post accident conditions.

Temporary activation of a secured closed containment isolation valve permits position indication of certain types of valves and allows maintenance testing of isolation valves.

References:

1.

NRC letter dated July 2, 1980, from D. C. Eisenhut to all pressurized water reactor licensees.

3-77a

TABLE 3.6.2-1 REMOTE MANUAL (RM) OR AUTOMATIC CONTAINMENT ISOLATION VALVE

SUMMARY

DESCRIPTION INSIDE SPHERE OUTSIDE SPHERE

1. Sphere Sump Discharge CV-102 CV-103

2. RCS Dr Tk Discharge CV-104 CV-105

3. RCS Dr Tk Vent CV-106 CV-107

4. NZ to RCS Drain Tank CV-536 CV-535 and PRT

5.

ORMS 1211/1212 Sphere CV-147 SV-1212-9 Sample Supply

6. ORMS 1211/1212 Sphere CV-146 SV-1212-8 Sample Return

7. A Stm. Gen. Stm. Sample SV-119

8. B Stm. Gen. Stm. Sample SV-ZO

9. C Stm. Gen. Stm. Sample SV-121

10.

A Stm. Gon. Blowdown Sample SV-123

11.

B Stm. Gen. Blowdown Sample SV-122

12.

C Stm. Gen. Blowdown Sample SV-124

13.

Service Water to Sphere CV-537 CV-115

14.

Service Air to Sphere Check Valve SV-l25

15.

SI Loop C Vent SV-702B SV-702A

16.

SI Loop B Vent SV-70ZD SV-7OZC

17.

H2 Calibration Gas SV-3004 SV-2004

18.

RC Loop Sample (CV-955, CV-956, CV-957 CV-962) RM SV-3302

19.

Pressurizer Sample (CV-.951, CV-953) RM CV-992

20.

Sphere Purge Air Supply*

POV-9

21.

Sphere Purge Air Outlet*

POV.lO

22.

Sphere Equalizing/Vent CV-116 CV-10 Inst. Air Vent CV-40

23.

Primary Makeup to PRT CV-533 CV-534

24.

Cont. Cooling Out CV-515 RM

25.

Cont. Cooling In CV-516 RM

26.

N2 Supply to PORV Check Valve CV-!332 RM

27.

Letdown CV-525 RM CV-526 RM

28.

Seal Water Return CV-52/ RM CV-528 RM

29.

RC Loop Sample Return Check Valve SV-3303 Manual valves CVS-301 and CVS-313 of the Sphere Purge Air Supply and Air Outlet lines, respectively, shall be locked closed during MODES 1, 2, 3, and 4.

5942u:4038F 3.78