ML20041A222
| ML20041A222 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 12/10/1981 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20041A218 | List: |
| References | |
| NUDOCS 8202190288 | |
| Download: ML20041A222 (6) | |
Text
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~SEQUOYAH NUCLEAR PLANT .
I UNIT 2 TECHNICAL SPECIFICATIONS 5
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PLANT SYSTEMS-FIRE HOSE STATIONS LIMITING CONDITION FOR OPERATION 3.7.11.4 The fire hose stations shown in Table 3.7-5 shall be OPERABLE.
APPLICABILITY: Whenever equipment in the areas protected by the fire hose stations is required to be OPERABLE.
ACTION:
- a. With one or more of the fire hose s*<*tions shown in Table 3.7-5 inoperable, route an additional equivalent capacity fire hose to the unprotected area (s) f rom an OPERABLE hose station within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> if the inoperable fire hose is the primary means of fire suppression; otherwise, route the additional hose within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Restore the fire hose station to OPERABLE status within 14 days or, in lieu of any other report required by Specification 6.9.1, prepare and submit a Special Report to the Commission pursuant to Specification 6.9.2 within the next 30 days outlining the action taken, the cause of the inoperability, and plans and schedule for restoring the station to OPERABLE status.
- b. 7he provisions of Specifications 3.0.3 and 3.0.4 are not applicable.
SURVEILLANCE REQUIREMEWS 4.7.11.4 Each of the fire hose stations shown in Table 3.7-5 shall be demonstrated OPERABLE:
- a. At least once per 31 days by a visual inspection of the fire hose stations accessible during plant operations to assure all required equipment is at the station.
- b. At least once per 18 months by:
- 1. Visual inspection of all the stations not accessible during plant operations to assure all required equipment is at the. station.
- 2. Removing the hose for inspection and re-racking, and
- c. At least once per 3 years by:
- 1. Partially opening each hose stetica valve to verify valve OPERABILITY and no flow blockage.
- 2. Conducting a hose hydrostatic test at a pressure of 250 psig or at least 50 psig above maximum fire main operating pressure, whichever is greater.
SEQUOYAH - UNIT 2 3/4 7-48 .
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- CONTAINMENT SYSTEMS ICE BED TEMPERATURE MONITORING SYSTEM LIMITING CONDITION FOR OPERATION 3.6.5.2 The ice bed temperature monitoring system shall be OPERABLE with at least 2 OPERABLE RTD channels in the ice bed at each of 3 basic elevations (10'6, 30'9 and 55' above the floor of the ice condenser) for each one third of the ice condenser.
APPLICABILITY: MODES 1, 2, 3, and 4.
ACTION:
- a. With the ice bed temperature indication not available in the main control room, de termine the ice bed temperature at the local ice condenser temperature monitoring Panel every 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
- b. With the ice bed temperature monitoring system inoperable, and unable to' de t e rm ine ice bed temperature at the local panel, POWER OPERATION may continue for up to 30 days provided:
- 1. The ice compartment lower inlet doors, intermediate deck doors, and top deck doors are closed;
- 2. The last recorded mean ice bed temperature was less than or equal to 20*F and steady; and j 3. The ice condenser cooling system is OPERABLE with at least:
a) 21 OPERABLE air handling units, b) 2 OPERABLE glycol circulating pumps, and c) 3 OPERABLE refrigerant units; Otherwise, be in at least HOT STFIDBY within 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 />.
- c. With the ice bed temperature monitoring system inoperable and unable to determine the ice bed temperatures by alternate means and with the ice condenser cooling system not satisfying the minimum components OPERABILITY requirements of a.3 above, POWER OPERATION may continue for up to 6 days provided the ice compartment lower inlet doors, intermediate deck doors, and top deck doors are closed and the last recorded mean ice bed temperature was less than or equal to 15'F and steady; otherwise, 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 />.
SURVEILLANCE REQUIREMENTS 4.6.5.2 The ice bed temperature monitoring system shall be determined OPERABLE by performance of a CHANNEL CHECK at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
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SEQUOYAH - UNIT 2 3/4 6-29
Tant F 3.6-2 CONTAINMENT ISOLATION VALVES FUNCTION MAIIMUM ISOLATION TIME (Seconds)
XALEE NUMBER
- A. PHASE 'A' ISOLATION 10
- 2. FCV-1-14 10
- 3. FCV-1-25 SG Blow Dn 10
- 4. FCV-1-32 SG Blow Dn 15
- 5. FCV-1-181 SG Blow Dn 15
- 6. FCV-1-182 SG Blow Dn 15
- 9. FCV-31C-222 10
- 10. FCV-31C-223 CW-Inst Room Cirs CW-Inst Room Cirs 10
- 11. FCV-31C-224 10
- 12. FCV-31C-225 CW-Inst Room Cirs CW-Inst Room Cirs 10
- 13. FCV-31C-229 10
- 14. FCV-31C-230 CW-Inst Room Cirs CW-Inst Room Clrs 10
- 15. FCV-31C-231 10
- 16. FCV-31C-232 CW-Inst Room Clrs Sample RC Outlet Hdrs 10 17 . FCV-43-22 10
- 18. FCV-43-23 Sample RC Outlet Rdrs SG Blow Dn Sample Line 10
[) 21. FCV-43-61 SG Blow Dn Sample Line 10
- 22. FCV-43-64 30 23 . FCV-61-96 Gylcol Inlet to Floor Cooler Gylcol Inlet to Floor Coole: 30
- 24. FCV-61-97 Gylcol Outlet to Floor Cooler 30
- 25. FCV-61-110 30
- 26. FCV-61-122 Gylcol Outlet to Floor Cooler Ice Condenser - Gylcol In 30
- 27. FCV-61-191 30
- 28. FCV-61-192 Ice Condenser - Gylcol In Ice Condenser - Gylcol out 30
- 29. FCV-61-193 Ice Condenser - Gylcol Out 30
- 30. FCV-61-194 RCP Seals 10
- 31. FCV-62-61 SEQU3YAH - UNIT 2 3/4 6-19 car i b
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e ENCLOSURE 2 JUSTIFICATION FOR PROPOSED CHANGES TO SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 TECHNICAL SPECIFICATIONS r
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Fire Hose Hydrostatic Test Pressure (unit 2)
The fire hose- hydrostatic test pressure is revised from 300 psig to 250 psig. This change brings the technical specifications in line with current industry and NRC fire protection standards. .The change from 300 psig was noticed in the Federal Register on September 8, 1981.
Ice Bed Temperature Determination (units 1 and 2)
The proposed change allows for the determination of ice bed temperatures by an alternate method if the main control room (MCR) monitor is inoperable.
The temperatures would be monitored at the same frequency at the local panels. The alternate measurement method will be more accurate with the use of a digital voltmeter instead of the MCR recorder.
Surveillance Requirements for Vital Battery Testing (unit 1)
This change involves the service testing requirement for the vital battery system. The present requirement states that the testing will be done during shutdown. This wording is part of the standard technical specifications for a two battery unit and it implies testing during refueling. There is no technical basis for requiring the testing during shutdown. The Sequoyah system consists of four batteries shared between two units. Testing during shutdown would require a forced outage on one
~D unit which we believe is unwarranted. We plan to test the batteries one at
- a time during power " operation. As with any surveillance testing, the out-of-service time will not exceed the time allowed by the appropriate action time. We do not foresee any problem with completing the testing in the allowable time.
Isolation Times for Valves in Table 3.6-2 (units 1 and 2)
The proposed change increases the isolation ti oe for eight containment isolation valvea from 10 seconds to 30 seconds. The valves are part of the ice condenser glycol system and have the potential for sluggish action because of frost buildup. Increasing the response time will not affect the safety analyses.
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