ML20082J104
| ML20082J104 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 11/28/1983 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20082J097 | List: |
| References | |
| TVA-SQN-TS-51, NUDOCS 8312010381 | |
| Download: ML20082J104 (13) | |
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ENCLOSURE 1 PROPOSED TECHNICAL SPECIFICATION SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 TVA-SQN-TS-51 i
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B312010381 831128 I PDR ADOCK 05000327 P PDR
ELECTRICAL POWER SYSTEMS MOTOR OPERATED VALVES THERMAL OVERLOAD PROTECTION LIMITING CONDITION FOR OPERATION 3.8.3.2 The thermal overload protection devices, integral with the motor starter, of each valve listed in Table 3.8-2 shall be OPERABLE.
APPLICABILITY: Whenever the motor operated valve is required to be OPERABLE.
ACTION:
With one or 'more of the thermal overload protection devices inoperable, declare the affected valve (s) inoperable and apply the ACTION Statement to the affected valve (s).
SURVEILLANCE REQUIREMENTS 4.8.3.2 The above required thermal overload protection devices shall be demonstrated OPERABLE:
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- a. At least once per 18 months by the performance of a CHANNEL CALIBRA- l TION of a representative sample of at least 25% of all thermal overload devices which are not bypassed, such that each non-bypassed device is calibrated at least once per 6 years.
e SEQUOYAH - UNIT 1 3/4 8-34 1
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TABLE 3.8-2 .
MOTOR OPERATED VALVES THERMAL OVERLOAD PROTECTION Valve No. Function ,
1-FCV-62-63 Isolation for Seal Water Filter Safe Shutdown Redundancy (CVCS) 1-FCV-62-138 1-FCV-62-98 ECCS Operation 1-FCV-62-99 ECCS Operation 1-FCV-62-90 ECCS Operation 1-FCV-62-91 ECCS Operation 1-FCV-62-61 Cont. Isolation 1-LCV-62-132 i ECCS Operation 1-LCV-62-133 ECCS Operation 1-LCV-62-135 ECCS Operation 1-LCV-62-136 ECCS Operation 1-FCV-74-1 Open for Normal Plant Cooldown 1-FCV-74-2 Open for Normal Plant Cooldown 1-FCV-74-3 ECCS Operation 1-FCV-74-21 ECCS Operation 1-FCV-74-12 RHR Pump, Mini-flow Protects Pump 1-FCV-74-24 RHR Pump, Mini-flow Protects Pump 1-FCV-74-33 ECCS Operation 1-FCV-74-35 ECCS Operation 1-FCV-63-7 ECCS Operation 1-FCV-63-6 ECCS Operation 1-FCV-63-156 ECCS Flow Path
- 1-FCV-63-157 ECCS Flow Path 1-FCV-63-39 BIT Injection 1-FCV-63-40 BIT Injection 1-FCV-63-25 BIT Injection _
l-FCV-63-26 BIT Injection 1-FCV-63-ll8 RCS Pressure Boundary .
1-FCV-63-98 RCS Pressure Boundary 1-FCV-63-80 RCS Pressure Boundary 1-FCV-63-67 RCS Pressure Boundary 1-FCV-63-1 ECCS Operation 1-FCV-63-72 ECCS Flow Path from Cont. Sump 1-FCV-63-73 ECCS Flow Path .from Cont. Sump 1-FCV-63-8 ECCS Flow Path 1-FCV-63-11 ECCS Flow Path ,
1-FCV-63-93 ECCS Cooldown Flow Path 1-FCV-63-94 ' ECCS Cooldown Flow Path 1-FCV-63-172 ECCS Flow Path 1-FCV-63-5 ECCS Flow Path 1-FCV-63-47 Train Isolation 1-FCV-63-48 Train Isolation 1-FCV-63-4 SI Pump Mini-flow 1-FCV-63-175 SI Pump Mini-flow SEQUOYAH - UNIT 1 3/4 8-35
TABLE 3.8-2 (Continued)
MOTOR OPERATED VALVES THERMAL OVERLOAD PROTECTION Valve No. Function '
l-FCV-63-3 SI Pump Mini-flow 1-FCV-63-152 ECCS Recirc l-FCV-63-153 ECCS Recirc 1-FCV-63-22 ECCS Recirc 1-FCV-3-33 Quick Closing Isolation 1-FCV-3-47 Quick Closing Isolation 1-FCV-3-87 Quick Closing Isolation 1-FCV-3-100 '
Quick Closing Isolation 1-FCV-1-15 Stm Supply to Aux FWP turbine 1-FCV-1-16 .Stm Supply to Aux FWP turbine 1-FCV-3-179A ERCW Sys Supply to Pump 1-FCV-3-1798 ERCW Sys Supply to Pump 1-FCV-3-136A ERCW Sys Supply to Pump 1-FCV-3-136B ERCW Sys Supply to Pump 1-FCV-3-116A ERCW Sys Supply to Pump 1-FCV-3-116B ERCW Sys Supply to Pump 1-FCV-3-126A ERCW Sys Supply to Pump 1-FCV-3-126B ERCW Sys Supply to Pump 1-FCV-70-133 Isolation for RCP Oil Coolers & Therm 8 ,
1-FCV-70-139 Isolation for RCP Oil Coolers & Therm B l-FCV-70-4 Isolation for Non-Essential Loads 1-FCV-70-143 Isolation for Excess Letdown Ht Xchngr }'
l-FCV-70-92 Isolation for RCP Oil Coolers & Therm B 1-FCV-70-90 Isolation for RCP Oil Coolers & Therm B l-FCV-70-87 Isolation for RCP Oil Coolers & Therm B 1-FCV-70-89 Isolation for RCP Oil Coolers & Therm B l-FCV-70-140 Isolation for RCP Oil Coolers & Therm B l-FCV-70-134 Isolation for RCP Oil Coolers & Therm B 1-FCV-67-67* DG Ht Ex ~
2-FCV-67-65* DG Ht Ex 1-FCV-67-66* DG Ht Ex l 2-FCV-67-68* DG Ht Ex l l-FCV-67-123 CSS Ht Ex Supply 1-FCV-67-125 CSS Ht Ex Supply _
l-FCV-67-124 CSS Ht Ex Discharge ~
, 1-FCV-67-126 CSS Ht Ex Discharge 1 0-FCV-67-151* CCW Ht Ex Throttling '
0-FCV-67-152*
- CCW Ht Ex Throttling l 2-FCV-67-146 CCW Ht Ex Throttling i 2-FCV-67-223 Isolation of IB/2A HDR's 1-FCV-67-83 Cont. Isol. Lower 1-FCV-67-88 Cont. Isol. Lower 1-FCV-67-87 Cont. Isol. Lower 1-FCV-67-424* CCW Ht Ex Isolation i 1-FCV-67-478' Isolation of IB ERCW HDR
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- Common to Units 1 & 2
, SEQUOYAH - UNIT 1 3/4 8-36 l
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TABLE 3.8-2 (Continued) .
MOTOR OPERATED VALVES THERMAL OVERLOAD PROTECTION Valve No. Function 1-FCV-67-95 Cont / Isol. Lower l-FCV-67-96 Cont. Isol. Lower 1-FCV-67-91 Cont. Isol. Lower 1-FCV-67-103 Cont. Isol. Lower 1-FCV-67-104 Cont. Isol. Lower 1-FCV-67-99 Cont. Isol. Lower 1-FCV-67-111 s Cont. Isol. Lower 1-FCV-67-112 Cont. Isol. Lower 1-FCV-67-107 Cont. Isol. Lowcr 1-FCV-67-130 Cont. Isol. Upper 1-FCV-67-131 Cont. Isol. Upper 1-FCV-67-295 Cont. Isol. Upper 1-FCV-67-134 Cont. Isol. Upper 1-FCV-67-296 Cont. Isol. Upper 1-FCV-67-133 Cont. Isol. Upper 1-FCV-67-139 Cont. Isol. Upper 1-FCV-67-297 Cont. Isol. Upper 1-FCV-67-138 Cont. Isol. Upper 1-FCV-67-142 Cont..Isol. Upper 1-FCV-67-298 Cont. Isol. Upper 1-FCV-67-141 Cont. Isol. Upper 1-FCV-72-21 Cont. Spray Pump Suction 1-FCV-72-22 Cont. Spray Pump Suction 1-FCV-72-20 Cont. Spray Pump Suction.
1-FCV-72-23 Cont. Spray Pump Suction 1-FCV-72-2 Cont. Spray Isol.
1-FCV-72-39 Cont. Spray Isol. .
1-FCV-72-40 RHR Cont. Spray Isol.
1-FCV-72-41 RHR Cont. Spray Isol.
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SEQUOY4H - UNIT.1 3/4 8-37
ELECTRICAL POWER SYSTEMS .
BASES CkSOURCESANDONSITEPOWERDISTRIBUTIONSYSTEMS(Continued) ,
limits for each connected cell for float voltage and specific gravity, greater ,
than 2.13 volts and not more than .020 below the manufacturer's full charge specific gravity with an average specific gravity of all the connected cells not more than .010 below the manufacture's full charge specific gravity, ensures the OPERABILITY and capab'ility of the battery.
Operation with a battery cell's parameter outside the normal limit but within the allowable value specified in Table 4.8-2 is permitted for up to 7 days. During this 7 day period: (1) the allowable values for electrolyte level ensures no physical damage to the plates with an adequate electron transfer capability; (2) the allowable value for the average specific gravity of all the cell's, not more than .020 below the manufacturer's recommended full charge specific gravity, ensures that the decrease in rating will be less than the safety margin provided in sizing; (3) the allowable value for an individual cell's specific gravity, ensures that an individual cell's specific gravity
- will not be more than .040 below the manufacturer's full charge specific gravity and that the overall capability of the battery will be maintained within an acceptable limit; and (4) the allowable value for an individual cell's float voltage, greater than 2.07 volts, ensures the battery's capability
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to perform its design function.
3/4.8.3 ELECTRICAL EQUIPMENT PROTECTIVE DEVICES Containment electrical penetrations and penetration conductors are protected by either de-energizing circuits not required during reactor operation or by demonstrating the OPERABILITY of primary and backup overcurrent protection circuit breakers during periodic surveillance.
The surveillance requirements applicable to lower voltage circuit breakers and fuses provides assurance of breaker and fuse reliability by testing at "
least one representative sample of each manufacturers brand of circuit breakers and/or fuse. Each manufacturer's molded case and metal case circuit breakers
- and/or fuses are grouped into representative samples which are then tested on a rotating basis to ensure that all breakers and/or fuses are tested. If a wide variety exie,ts within any manufacturer's brand of circuit breakers and/or fuses, it is necessary to divide that manufacturer's breakers and/or fuses into groups and treat each group as a separate type of breaker of fuses for surveillance purposes.
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TheOPERABILITYofthemoto'rYper~atedvalvesthermaloverloadprotection ensures that the thermal overload protection devices will not prevent safety related valves from performing their function. The Surveillance Requirements for demonstrating"the OPERABILITY of these devices are in accordance with Regulatory Guide 1.106 " Thermal Overload Protection for Electric Motors on Motor Operated Valves", Revision 1, March 1977.
Circuit breakers actuated by fault currents are used as isolation devices in this plant. The OPERABILITY of these circuit breakers ensures that the IE busses will be protected in the event of faults in nonqualified loads powered by the busses.
SEQUOYAH - UNIT 1 B 3/4 8-2
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ELECTRICAL POWER SYSTEMS ..
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i MOTOR OPERATED VALVES THERMAL OVERL0t' TECTION i l 1
LIMITING CONDITION FOR OPERATION 3.8.3.2 The thermal overload protection devices, integral with -
the motor starter, of each valve listed in Table 3.8-2 shall be OPERABLE.
APPLICABILITY: Whenever the motor operated valve is required to be OPERABLE.
- 1 ACTION:
With one or more of the thermal overload protection devices inoperable, declare the affected valve (s) inoperable and apply the .
ACTION Statement to the affected valve (s). 1 i SURVEILLANCE REGUIREMENTS 4.8.3.2. The above required thermal overload protection devices i
shall be demonstrated OPERABLE:
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i a. At least once per 18 months by the performance of a CHANNEL l -
CALIBRATION of a representative sample of at least 25% of all thermal l
l overload devices whl-h are not bypassed, such that each non-bypassed device is calibrated at least once per 6 years.
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SEQUOYAH - UNIT 2 3/4 8-33 i
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. TABLE 3.8-2 MOTOR OPERATED VALVES THERMAL OVERLOAD PROTECTION Valve No. Function 2-FCV-62-63 Isolation for Seal Water Filter 2-FCV-62-138 Safe Shutdown Redundancy (CVCS) 2-FCV-62-98 ECCS Operation
- 2-FCV-62-99 ECCS Operation 2-FCV-62-90 ECCS Operation 2-FCV-62-91 ECCS Operation 2-FCV-62-61 Cont. Isolation 2-FCV-62-132 ECCS Operation 2-FCV-62-133 ECCS Operation 2-LCV-62-135 ECCS Operation 2-LCV-62-136 ECCS Operation 2-FCV-74-1 Open for Normal Plant Cooldown 2-FCV-74-2 Open for Normal Plant Cooldown 2-FCV-74-3 ECCS Operation 2-FCV-74-21 ECCS Operation 2-FCV-74-12 RHR Pump, Mini-flow Protects Pump 2-FCV-74-24 RHR Pump, Mini-flow Protects Pump 2-FCV-74-33 ECCS Operation 2-FCV-74-35 ECCS Operation 2-FCV-63-7 ECCS Operation 2-FCV-63-6 ECCS Operation 2-FCV-63-156 ECCS Flow Path 2-FCV-63-157 ECCS Flow Path 2-FCV-63-39 BIT Injection 2-FCV-63-40 BIT Injection 2-FCV-63-25 BIT Inj~ction e
2-FCV-63-26 BIT Injection 2-FCV-63-118 RCS Pressure, Boundary 2-FCV-63-98 RCS Pressure Boundary -
2-FCV-63-80 RCS Pressure Boundary 2-FCV-63-67 RCS Pressure Boundary 2-FCV-63-1 ECCS Operation 2-FCV-63-72 ECCS Flow Path from Cont. Sump 2-FCV-63-73 ECCS Flow Path from Cont. Sump l 2-FCV-63-8 ECCS Flow Path 2-FCV-63-ll ECCS Flow Path 2-FCV-63-93 ECCS Cooldown Flow Path ,
2-FCV-63-94 .
ECCS Cooldown Flow Path 2-FCV-63-172 ECCS Flow Path 2-FCV-63-5 ECCS Flow Path 2-FCV-63-47 Train Isolation 2-FCV-63-48 Train Isolation 2-FCV-63-4 SI Pump Mini-flow 2-FCV-63-173 SI Pump Mini-flow SEQUOYAH - UNIT 2 3/4 8-34
m TABLE 3.8-2 (Continued)
MOTOR OPERATED VALVES THERMAL OVERLOAD PROTECTION Valve No. Function L
2-FCV-63-3 SI Pump Mini-flow ;
2-FCV-63-152 ECCS Recire l 2-FCV-63-153 ECCS Recirc ,
2-FCV-63-22 ECCS Recirc 2-FCV-3-33 Quick Closing Isolation 2-FCV-3-47 Quick Closing Isolation 2-FCV-3-87 Quick Closing Isolation 2-FCV-3-100 Quick Closing Isolation '
2-FCV-1-15 Stm Supply to Aux FWP turbine 2-FCV-1-16 Stm Supply to Aux FWP turbine 2-FCV-3-179A ERCW Sys Supply to Pump 2-FCV-3-1798 ERCW Sys Supply to Pump ,
2-FCV-3-136A ERCW Sys Supply to Pump l 2-FCV-3-1368 ERCW Sys Supply to Pump !
2-FCV-3-116A ERCW Sys Supply to Pump 2-FCV-3-ll68 ERCW Sys Supply to Pump 2-FCV-3-126A ERCW Sys Supply to Pump 2-FCV-3-126B ERCW Sys Supply to Pump 2-FCV-70-133 Isolation for RCP Oil Coolers & Therm 8 2-FCV-70-139 Isolation for RCP Oil Coolers & Therm B 2-FCV-70-4 Isolation for Non-Essential Loads 2-FCV-70-143 Isolation for Excess Letdown Ht Xchngr 2-FCV-70-92 Isclation for RCP Oil Coolers & Therm B 2-FCV-70-90 Isolation for RCP Oil Coolers & Therm B (
2-FCV-70-87 Isolation for RCP Oil Coolers & Thera 8 2-FCV-70-89 Isolation for RCP Oil Coolers & Therm 8 2-FCV-70-140 Isolation for RCP Oil Coolers & Therm B i 2-FCV-70=134 Isolation for RCP Oil Coolers & Therm B 1-FCV-67-67" DG Ht Ex !
2-FCV-67-65* DG Ht Ex 1-FCV-67-66* OG Ht Ex 2-FCV-67-68* OG Ht Ex 2-FCV-67-123 CS Ht Ex Supply 2-FCV-67-125 CS Ht Ex Supply 2-FCV-67-124 CS Ht Ex Discharge 2-FCV-67-126 CS Ht Ex Discharge 0-FCV-67-151* CCW Ht Ex Throttling -
0-FCV-67-152*. CCW Ht Ex Throttling 2-FCV-67-146 CCW Ht Ex Throttling 1-FCV-67-424* CCW Ht Ex Isolation 1-FCV-67-478* Isolation of 1B ERCW HDR 2-FCV-67-223 Isolation of 1B/2A HDR's 2-FCV-67-83 Cont. Isol. Lower 2-FCV-67-88 Cont. Isol. Lower 2-FCV-67-87 Cont. Isol. Lower
" Common to Units 1 & 2.
SEQUOYAH - UNIT 2 3/4 8-35
I TABLE 3.8-2 (Continued)
MOTOR OPERATED VALVES THERMAL OVERLOAD PROTECTION Valve No. Function l 2-FCV-67-95 Cont. Isol. Lower ' <
2-FCV-67-96 Cont. Isol. Lower
- 2-FCV-67-91 Cont. Isol. Lower 2-FCV-67-103 Cont. Isol. Lower 2-FCV-67-104 Cont. Isol. Lower :
Cont. Isol. Lower 2-FCV-67-99 2-FCV-67-111 Cont. Isol. Lower 2-FCV-67-112 Cont. Isol. Lower 2-FCV-67-107 Cont. Isol. Lower 2-FCV-67-130 Cont. Isol. Upper 2-FCV-67-131 Cont. Isol. Upper .
2-FCV-67-295 Cont. Isol. Upper 2-FCV-67-134 Cont. Isol. Upper '
2-FCV-67-296 Cont. Isol. Upper 2-FCV-67-133 Cont. Isol. Upper 2-FCV-67-139 Cont. Isol. Upper 2-FCV-67-297 Cont. Isol. Upper 2-FCV-67-138 Cont. Isol. Upper 2-FCV-67-142 Cont. Isol. Upper 2-FCV-67-298 Cont. Isol. Upper 2-FCV-67-141 Cont. Isol. Upper 2-FCV-72-21 Cont. Spray Pump Suction 2-FCV-72-22 Cont. Spray Pump Suction ,
2-FCV-72-20 Cont. Spray Pump Suction '
2-FCV-72-23 Cont. Spray Pump Suction 2-FCV-72-2 Cont. Spray Isol.
2-FCV-72-39 Cont. Spray Isol.
2-FCV-72-40 RHR Coat. Spray Isol. -
2-FCV-72-41 RHR Cont. Spray Isol.
SEQUOYAH - UNIT 2 3/4 8-36
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BASES ,
ELECTRICAL EOUIPMENT PROTECTIVE DEVICES (Continued)
The OPERABILITY of the motor operated valves thermal overload protection ensures that the thermal overload protection devices will.not prevent safety related valves from performing their function. The Surveillance Requirements for demonstrating the OPERABILITY of these devices are in accordance with Regulatory Guide 1.106 " Thermal Overload Protection for Electric Motors on Motor Operated Valves", Revision 1, March 1977.
Circuit breakers actuated by fault currents are used as isolation devices in this plant. The OPERABILITY of these circuit breakers ensures that the IE .
busses will be protected in the event of faults in non qualified loads powered by the busses.
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e SEQUOYAH - UNIT 2 B 3/4 8-3
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l ENCLOSURE 2 JUSTIFICATION FOR PROPOSED TECHNICAL SPECIFICATION CHANGE TVA-SQN-TS-51 SEQUOYAH NUCLEAR PLANT
,r UNITS 1 AND 2 The proposed technical specification change request deletes the requirement to test the motor operated valve (MOV) thermal overload by-pass devices and changes the associated limiting condition fbr operation (T/S 3.8 3.2) and the surveillance requirements (T/S 4.8.3.2). Technical specification 3.8.3.2 is intended to ensure that thermal overload protection and by-pass devices will not prevent safety-related valves from performing their function. ,.
The present technical specification 3.8.3.2 requires the operability of a list of valves by testing the associated by-pass circuitry. None of the MOV's at Sequoyah have by-pass circuitry. Therefore, the surveillance requirements for this technical specification are not applicable to 2
i Sequoyah and should be deleted. The other changes are only for clarifi-cation and enhance the applicability of this requirement to Sequoyah. The safety margin of these valves is not decreased nor is the operability or reliability affected. Attachment 1 provides the significant hazards consideration determination, pursuant to 10 CFR 50.92, and no significant hazards considerations are involved.
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ATTACUMENT 1
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SIGNIFICANT HAZARDS CONSIDERATION DETERMINATION Technical specification 3.8.3 2 is intended to prevent damage to j safety-related valve motors due to thermal overload. The standard ;
technical specifications make allowance for installation of devices to '
bypass these protective features. Valves at Sequoyah Nuclear Plant do not.
have bypass devices. For this reason, SR 4.8.3 2.a is a nugatory requirement, and its deletion will more accurately reflect existing plant configuration. The change in valve numbers to FCV-63-6, FCV 63-7, FCV-73-20, and FCV 72-23 brings the valve identification into agreement with the function noted in the table.
The changes noted above do not decrease the level of surveillance on any safety-related equipment. For this reason, there is no significant increase _in the probability or consequences of an accident previously evaluated nor is any new kind of accident possibility created. There is no impact on safety margin.
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