ML20115G495

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Proposed Tech Specs,Modifying Spec 3/4.7.1.3 Re Condensate Storage Pool by Increasing Minimum Required Contained Water Vol from 82% to 91% Indicated Level
ML20115G495
Person / Time
Site: Waterford Entergy icon.png
Issue date: 07/17/1996
From:
ENTERGY OPERATIONS, INC.
To:
Shared Package
ML20115G494 List:
References
NUDOCS 9607190177
Download: ML20115G495 (6)
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Text

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NPF-38-179 ATTACHMENT A i

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9607190177 960717 PDR ADOCK 05000302 P PDR

PLANT SYSTEMS CONDENSATE STORAGE POOL LIMITING CONDI1 ION FOR OPERATION 3.7.1.3 The condensate storage pool (CSP) shall be OPERABLE with a contained volume of at least 82% indicated level (170,000 gallons).

APPLICABILITY: MODES 1, 2, and 3.

ACTION:

With the condensate storage pool inoperable, within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> either:

a. Restore'the CSP to OPERABLE status or be in at least HOT STANDBY l

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 HOT SHUTOOWN within the following i

6 heurs, or

b. Demonstrate the OPERABILITY of the wet cooling tower basins as a I

backup supply to the emergency feedwater pumps and restore the condensate storage pool to OPERABLE status within 7 days or be in at least HOT STARJ8Y 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 HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. 8

SURVEILLANCE REQUIREMENTS t l

I 4.7.1.3.1 The condensate storage pool shall be demonstrated OPERABLE at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> by verifying the contained water volume is within its limits when the pool is the supply source for the emergency feedwater pumps.

l l 4.7.1.3.2 The wet cooling tower basins shall be demonstrated OPERABLE at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> whenever the wet cooling tower basins are the supply source for the emergency feedwater pumps by verifying:

a. That each automatic and/or non-automatic valve in the flow path from the wet cooling tower basins to the emergency feedwater pumps is ,

[ open or OPERABLE. i l

l b. That the wet cooling tower basins contain a minimum contained water volume of 170,000 gallons.

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c. That both auxiliary component cooling trains required by Specification 3.7.3 are OPERABLE and in operation.

WATERFORD - UNIT 3 3/4 7-6

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PLANT SYSTEMS BASES  :

i 3/4.7.1.2 EMERGENCY FEEDWATER SYSTEM ,

The OPERABILITY of the emergency feedwater system ensures that the Reactor Coolant System can be cooled down to less than 350*F from normal operating '

conditions in the event of a total loss-of-offsite power. I Eachelectric-drivenemergencyfeedwaterpumpiscapabheofdeliveringa total feedwater flow of 350 gpa at a pressure of 1163 psig to the entrance of the steam generators. The steam-driven emergency feedwater pump is capable

, of delivering a total feedwater flow of 700 gpm at a pressure of 1163 psig l to the entrance of the steam generators. This capacity is sufficient to l ensure that adequate feedwater flow is available to remove decay heat and

reduce the Reactor Coolant System temperature to less than 350*F when the shutdown cooling system may be placed into operation.

The surveillance requirement to verify the minimum pump discharge pressure  ;

on recirculation flow ensures that the pump performance curve has not degraded l below that used to show that the pumps meet the above flow requirements and

3/4.7.1.3 CONDENSATE STORAGE POOL The OPERABILITY of the condensate storage pool with the minimum water

, . volume ensures that sufficient water is available to cool the Reactor Coolant System to shutdown cooling entry conditions (350'F) following any design basis accident. -Additional makeup water is stored in the wet cooling tower basins providing the capability to maintain HOT STANOBY conditions for at least an additional 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> prior to initiating shutdown cooling. The total makeup capacity also provides sufficient cooling for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> until shutdown cooling is initiated in the event the cooling towers sustain tornado damage concurrent with the accident or if natural circulation cooldown is required. The con-tained water volume limit includes an allowance for water not usable because of tank discharge line location or other physical characteristics. The combined capacity is sufficient to maintain the plant at HOT STANDBY for 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, followed by a cooldown to shutdown cooling entry conditions assuming the availability of only onsite power or only offsite power, and the worst single failure (loss of a diesel generator or atmospheric dump valve).

This requires approximately 275,000 gallons and complies with BTP RSB 5-1.

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, WATERFORD - UNIT 3 8 3/4 7-2 l , - -- . -. - -

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i NPF-38-179 ATTACHMENT B

  • P'LANT SYSTEMS CONDENSATE STORAGE POOL l LIMITING CONDITION FOR OPERATION 3.7.1.3 The condensate storage pool (CSP) shall be OPERABLE with a minimum contained volume of at least 91% 82% indicated level (170,000 gallons useable volume).

APPLICABILITY: MODES 1,2, and 3.

ACTION:

i l With the condensate storage poolinoperable, within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> either:

a. Restore the CSP to OPERABLE status or 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 HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, or
b. Demonstrate the OPERABILITY of the wet cooling tower basins as a backup supply to the emergency feedwater pumps and restore the condensate storage pool to OPERABLE status within 7 days or 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 HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

SURVEILLANCE REQUIREMENTS 4.7.1.3.1 The condensate storage pool shall be demonstrated OPERABLE at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> by verifying the contained water volume is within its limits when the pool is the supply source for the emergency feedwater pumps.

4.7.1.3.2 The wet cooling tower basins shall be demonstrated OPERABLE at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> whenever the wet cooling tower basins are the supply source for the emergency feedwater pumps by verifying:

a. That each automatic and/or non-automatic valve in the flow path from the wet cooling tower basins to the emergency feedwater pumps is open or l

OPERABLE.

b. That the wet cooling tower basins contain a minimum contained water volume of 170,000 gallons.
c. That both auxiliary component cooling trains required by Specification 3.7.3 are OPERABLE and in operat;on.

WATERFORD - UNIT 3 3/4 7-6 i

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PLANT SYSTEMS BASES  :

3/4.7.1.2 EMERGENCY FEEDWATER SYSTEM  !

The OPERABILITY of the emergency feedwater system ensures that the Reactor Coolant System can be cooled down to less than 350 F from normal operating conditions in l the event of a total loss-of-offsite power.  !

Each electric-driven emergency feedwater pump is capable of delivering a total i feedwater flow of 350 gpm at a pressure of 1163 psig to the entrance of the steam generators.

The steam-driven emergency feedwater pump is capable of delivering a total feedwater flow of 700 gpm at a pressure of 1163 psig to the entrance of the steam generators. This capacity is i sufficient to ensure that adequate feedwater flow is available to remove decay heat and l reduce the Reactor Coolant System temperature to less than 350 F when the shutdown cooling system may be placed into operation. ,

I i The surveillance requirement to verify the minimum pump discharge presaure on recirculation flow ensures that the pump performance curve has not degraded be'ow that used to show that the pumps meet the above flow requirements and is consistent with tie j l requirements of ASME Section XI. i i

3/4.7.1.3 CONDENSATE STORAGE POOL The OPERABILITY of the condensate storage pool (CSP) with the minimum water volume ensures that sufficient water is available (170.000 aallons) to cool the Reactor Coolant System to shutdown cooling entry conditions (350 F) following any design basis accident.

Additional makeup water is stored in the wet cooling tower (WCT) basins providing the l capability to maintain HOT STANDBY conditions for at least an additional 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> prior to

initiating shutdown cooling. The total makeup capacity also provides sufficient cooling for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> until shutdown cooling is initiated in the event the cooling towers sustain tomado damage concurrent with the accident or if natural circulation cooldown is required. The CSP .

contained water volume limit (91%. indicated) includes an ellowance for water not usable because of tank &ch:rge Fne !cc Sen vortexina ohenomena prevention . and instrumentation uncertainties or other physicatcharacteristics. This provides an assurance that a minimum of 170.000 callons of water is available in the CSP. The combined capacity (WCT and CSP) is sufficient to maintain the plant at HOT STANDBY for 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> followed by a cooldown to j shutdown cooling entry conditions assuming the availability of only onsite power or only offsite i power, and the worst single failure (loss of a diesel generator or atmospheric dump valve). This requires approximately 275,000 gallons and complies with BTP RSB 5-1.

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i WATERFORD - UNIT 3 B 3/4 7-2 l I

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