ML13331A812

Proposed Tech Spec Change 149,providing Assurance That Containment Isolation Valves Listed in Table 3.6.2-1 Will Function When Initiated by Appropriate Sensors

ML13331A812
Person / Time
Site:	San Onofre
Issue date:	05/07/1985
From:	SOUTHERN CALIFORNIA EDISON CO.
To:
Shared Package
ML13331A811	List: ML13331A810 ML13331A812
References
NUDOCS 8505130400
Download: ML13331A812 (7)

Text

Attachment A EXISTING TECHNICAL SPECIFICATION 3.6.2 8505130400 650507 PDR ADOCK 05000206 p

PDR

3.6.2 CONTAINMENT ISOLATION VALVES APPLICABILITY: Applies to the containment isolation valves listed in Table 3.6.2-1 for MODES 1, 2, 3 and 4.

OBJECTIVE:

To provide assurance that containment isolation will function when initiated by appropriate sensors.

SPECIFICATION: A. The containment isolation valves specified in Table 3.6.2-1 shall be OPERABLE.

B. With one or more of the isolation valve(s) specified in Table 3.6.2-1 inoperable, maintain at least one isolation valve OPERABLE in each affected penetration that is open and either:

64 12/16/8

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 automatic 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 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 />.

BASIS:

The OPERABILITY of the containment isolation valves ensures that the containment atmosphere 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.

The isolation valves of the Sphere Purge Air Supply and Air Outlet lines have not been demonstrated capable of closure under the differential pressures generated by a design basis 75 accident. For this reason, containment isolation in these 2/17/84 lines shall 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 they can be demonstrated capable of performing their containment isolation function under post accident conditions.

References:

(1) NRC letter dated July 2, 1980, from D. G. Eisenhut to all pressurized water reactor licensees.

3-77 Revised:

3/7/84

TABLE 3.6.2-1 POWER OPERATED OR AUTOMATIC CONTAINMENT ISOLATION VALVE

SUMMARY

DESCRIPTION INSIDE SPHERE ALIGNMENT*

OUTSIDE SPHERE ALIGNMENT*

1.

Sphere Sump Discharge CV-102 (SV-108)

B CV-103 (SV-109)

A

2.

RCS Dr Tk Discharge CV-104 (SV-110)

B CV-105 (sV-111)

A

3.

RCS Dr Tk Vent CV-106 (SV-112)

B CV-107 (SV-113)

A

4.

N2 to RCS Drain Tank and PRT CV-536 A

CV-535 B

5.

ORMS 1211/1212 Sphere CV-147 (SV-1212-7)

B SV-1212-9 A

Sample Supply

6.

ORMS 1211/1212 Sphere CV-146 (SV-1212-6)

B SV-1212-8 A

Sample Return

7.

A Stm. Gen. Stm. Sample None SV-119 A

8.

B Stm. Gen. Stm. Sample None SV-120.

A

9.

C Stm. Gen. Stm. Sample None SV-121 A

10.

A Stm. Gen. Blowdown Sample None SV-123 A

11.

B Stm. Gen. Blowdown Sample None SV-122 A

12.

C Stm. Gen. Blowdown Sample None SV-124 A

13 Service Water to Sphere CV-537 A

CV-115 (SV-126)

B w 14.

Service Air to Sphere Check Valve

.SV-125 A

o0 15.

SI Loop C Vent SV-702B A

SV-702A B

16.

SI Loop B Vent SV-702D A

SV-702C B

17.

PRT Gas Sample CV-948**

A CV-949 (SV-949)

B

18.

RC Loop Sample (CV-955, CV-956, CV-962)**

A CV-957 (SV-957)

B

19.

Pressurizer Sample (CV-951, CV-953)**

A CV-992 (SV-992)

B

20.

Sphere Purge Air Supply ***

POV-9 (SV-29)

A

21.

Sphere Purge Air Outlet ***

POV-10 (SV-30)

A

22.

Sphere Equalizing/Sphere Vent CV-116 (SV-27)

B CV-10 (SV-28)

A Inst. Air Vent CV-40 (SV-19)

B 1

23. Primary Makeup to Press CV-533 A

CV-534 B

0 Rlf. Tk.

24. Cont. Cooling Out CV-515**

A

25.

Cont. Cooling In CV-516**

26.

N2 Supply to PORV Check Valve CV-532**

B 0 2. 27.

Letdown, CV-525**

A CV-526**

B

28. Seal Water Return CV-527**

A CV-528**

B Logic Nest C, Train A is aligned to power train F; Logic Nest D, Train B is aligned to power train G.

These valves do not receive an automatic containment isolation signal. They are operated by remote manual switch (RMS).

• • • Manual valves CVS-301 and CVS-313 of the Sphere Purge Air Supply and Air Outlet lines, respectively, shall be a I locked closed during MODES 1, 2, 3, and 4 in order to ensure that the containment purge lines maintain OD containment isolation.

Attachment B PROPOSED TECHNICAL SPECIFICATION 3.6.2

3.6.2 CONTAINMENT ISOLATION VALVES APPLICABILITY:

MODES 1, 2, 3 and 4.

OBJECTIVE:

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

SPECIFICATION:

Fhe 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 SIANDBY 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)

The 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 5hall 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. G. Eisenhut to all pressurized water reactor licensees. 77a

TABLE 3.6.2-1 REMOTE MANUAL (RM)

OR AUTOMArIC CONrAINMENT 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.

N2 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-120

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

10.

A Stm. Gen. 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-125

15.

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

16.

SI Loop B Vent SV-702D SV-/02C

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-10

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-bl6 RM

26.

N2 Supply to PORV Check Valve CV-532 RM

27.

Letdown CV-525 RM CV-526 RM

28.

Seal Water Return CV-527 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