ML20214P073

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Proposed Tech Spec,Adding Suppression Pool Pumpback Sys to Ensure Consideration as Required Equipment for Suppression Pool Operability
ML20214P073
Person / Time
Site: River Bend Entergy icon.png
Issue date: 08/29/1986
From:
GULF STATES UTILITIES CO.
To:
Shared Package
ML20214P052 List:
References
NUDOCS 8609170251
Download: ML20214P073 (6)
v • d • e


Text

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EMERGENCY CORE COOLING' SYSTEMS .

3/4.5.3 SUPPRESSION POOL

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LIMITING CONDITION FOR OPERATION 3.5.3 The suppression pool shall be OPERABLE:

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a. In OPERATIONAL CONDITION 1, 2.and 3 with a contained water volume of at least 137,571 ft 3, equivalent to a level of 19'6".
b. In OPERATIONAL CONDITION 4 and 5* with a contained water volume of-at least 94,000 ft3 , equivalent to a level of 13'3", except that

-the suppression pool level may be less than the limit or may be l drained provided that:

f' 1. No operations are performed that have a potential for draining the reactor vessel, '

2. The reactor mode switch is locked in the Shutdown or Refuel position,
3. The condensate storage tank contains at least 125,000 avail-able gallons.of water, equivalent to a level of 11'1", and
4. The HPCS system is OPERABLE per Specification 3.5.2 with an *

.I OPERABLE. flow path capable of taking suction from the conden-

sate storage tank and transferring the water through the spray i sparger to the reactor vessel.

C. .Sec. Arr4c.uo 'rusar l APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, 3, 4 and 5*.

ACTION: ,

a. In OPERATIONAL CONDITION 1, 2 or 3 with the suppression pool water level less than the above limit, restore the water level to within
the limit within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or be in at least HOT SHUTOOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

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b. In OPERATIONAL CONDITION 4 or 5* with the suppression pool water level i less than the above limit or drained and the above required conditions not satisfied,' suspend CORE ALTERATIONS and all operations that have a potential for draining the reactor vessel and lock the reactor mode switch in the Shutdown position. Establish PRIMARY CONTAINMENT INTEGRITY - FUEL HANDLING within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

I C. .See. Airnew.o Tusar

'- *The suppression pool is not required to be OPERABLE in OPERATIONAL CONDITION 5 provided that the reactor vessel head is removed, the cavity is flooded, the upper containment fuel pool gate is open, and the water level is maintained within the limits of Specifications 3.9.8 and 3.9.9.

8609170251 860829 PDR ADOCK 05000458 P PDR i RIVER BENO - UNIT 1 3/4 5-8 i

EMERGENCY CORE COOLING SYSTEMS SURVEILLANCE REQUIREMENTS 4.5.3.1 The suppression pool shall be determined OPERABLE by verifying the water level to be greater than or equal to, as applicable:

a. 19'6", at least once per 24 tours, in OPERATIONAL CONDITION 1, 2 and 3.
b. 13'3", at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, in OPERATIONAL CONDITION 4 and 5.

4.5.3.2 With the suppression pool level less than the above limit or drained in OPERATIONAL CONDITION 4 or 5*, at least once per 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />s:

a. Verify the required conditions of Specification 3.5.3.b to be satisfied, or
b. Verify footnote conditions
  • to be satisfied.

4.5.3.3 SEE ATTACHC.D TusERT l

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  • The suppression pool is not required to be OPERABLE in OPERATIONAL CONDITION 5 provided that the reactor vessel head is removed, the cavity is flooded, the upper' containment fuel pool gate is open, and the water level is maintained within the limits of Specifications 3.9.8 and 3.9.9.

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RIVER BEND - UNIT 1 3/4 5-9

INSERT LIMITING CONDITION FOR OPERATION 3.5.3 ...

c. With an OPERABLE suppression pool pumpback system . (SPPS) consisting of:
1. At least one OPERABLE crescent area sump pump and
2. An' OPERABLE flow path to the suppression pool.

ACTION:

c. With the SPPS inoperable, restore SPPS to OPERABLE status within 7 days or:

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1. In OPERATIONAL CONDITION 1, 2,.or 3 be in.at least.

HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.and COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

2. In OPERATIONAL CONDITION 4 or 5* provide at least one alternate pumpback method and demonstrate the OPERABILITY of at least one alternate method at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> thereafter, otherwise suspend CORE ALTERATIONS and all operations that have a potential for draining the reactor vessel and lock the reactor mode switch in the shutdown position. Establish PRIMARY CONTAINMENT INTEGRITY

- FUEL HANDLING within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

SURVEILLANCE REQUIREMENTS 4.5.3.3 At least once per 92 days, the SPPS shall be demonstrated OPERABLE by:

a. Verifying each crescent area sump pump develops 50gpm, and
b. Verifying the flow path can be remote-manual aligned to the suppression pool.

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l 3/4.5 EMERGENCY CORE COOLING SYSTEM BASES

, SUPPRESSION POOL (Continued)

Repair work might require making the suppression pool inoperable. This specification will permit those repairs to be made and at the same time give assurance that the irradiated fuel has an adequate cooling water supply when the suppression pool must be made inoperable, including draining,.in OPERATIONAL CONDITION 4 or 5.

In OPERATIONAL CONDITIONS 4 and 5 the suppression pool minimum required water volume is reduced because the reactor coolant is maintained at or below 200*F. Since pressure suppression is not required below 212'F, the minimum required water volume is based on NPSH, recirculation volume, vortex preven-tion, and a 2' 6" safety margin for conservatism.

r RIVER BEND - UNIT 1 B 3/4 5-3

INSERT for Page B3/4 5-3 The Suppression Pool Pumpback System (SPPS) is a necessary subsystem to ensure suppression pool level and therefore the OPERABILITY of the Suppression Pool can be maintained in the event of a passive ECCS failure. The ECCS piping components may experience passive . failures such as the suction valve packing failing. The system design basis is for a maximum unisolatable leak into the auxiliary building crescent room of 50 gpm. The manually operated SPPS consists of two crescent room sumps each with two 100% capacity pumps. Each pump is capable of pumping 65 gpm and is sufficient to ensure. OPERABILITY of the Suppression

. Pool.

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f GULF STATES UTILITIED COMPANY BEAUMONT, TEXAS (713) 838-6631

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DATE CHECK NCL PAY TMS AMOUNT 9-4-86 700787 *150.00**

PAY TO TM ORDER OF A S SC ANY l U.S. Nuclear Regulatory Commission j Office Of Nuclear Reactor Regulation s g

l Washington, D.C. 20555 l L_ __l Y

l d*7 ONE SONATURE REQUIRED $5,000 OR LESS

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OF BEAUMONT, NA VOID AFTER 60 DAYS i

! b, BEAUMONT, TEXAS e 700 78 7e :: L L 3 LOO 21.Oi' OG=51 857 Le d j DETACH BEFORE DEPOSITNG . TMS VOUCHER IS IN FULL SETTLEMENT OF ITEMS USTED BELOW e GULF STATES UTUTES COMPANY DATE NVOICE NUMBER OR EXPLANATON DISCOUNT NET l TERMS l 9-4-86 070017 Application Fee - Facility Operating License

  • Change Request #86-018 150.00 4

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