ML20059L008

Proposed Tech Spec 3/4.5.6, RHR Sys

ML20059L008
Person / Time
Site:	South Texas
Issue date:	11/05/1993
From:	HOUSTON LIGHTING & POWER CO.
To:
Shared Package
ML20059K985	List: ML20059L008 ST-HL-AE-4614, Withdraws Application for Amend to TS Surveillance Requirements 4.5.6.1 & 4.6.2.1.b Re RHR & CS Pumps.Revised TSs Encl
References
NUDOCS 9311160269
Download: ML20059L008 (2)

Text

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! ATTACliMENT  ;

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EMERGENCY CORE COOLING SYSTEMS 7

3 /4.5. 6 RESIDUAL HEAT REMOVAL (RHR) SYSTEM r b

4 LIMITING CONDITION FOR OPERATION 3.5.6 Three independent Residual Heat Removal (RHR) loops shall be OPERABLE with each loop comprised of:

a. One OPERABLE RHR pump,

b. One OPERABLE RHR heat exchanger, and

c. One OPERABLE flowpath capable of taking suction from its associated RCS hot leg and discharging to its associated RCS cold leg.*

APPLICABILITY: MODES 1, 2 and 3.

ACTION: lOdagg l With one RHR loop inoperable, restore the required loop to OPERABLE l a.

status within K ,.= 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 />.

b. With two RHR loops inope ble, restore at least two RHR loops td ,

OPERABLE status within ours or be in at least HOT STANDBY within  !

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 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

c. With three RHR loops inopera'ble, immediately initiate corrective action to restore at least one RHR loop to OPERABLE status as soon as possible.

SURVEILLANCE REOUIREMENTS l 4.5.6.1 Each RHR loop shall be demonstrated OPERABLEMEE,I,: 57pu rsuant

^

b tb C l e7? ::x.. m vi S.;M T k e t k.. ' . 5, [^^,f '"Jl* F ' " 1 X .7,0, . . . .a r ep er emurs o( S rec t .c a t. o o r q. o. g, J 4.5.6.2 At least once per 18 months by verifying automatic interlock action of the RHR system from the Reactor Coolant System to ensure that:

a. With a simulated or actual Reactor Coolar.t System pressure signal greater than or equal to 350 psig, the interlocks prevent the valves from being opened. g

• Valves MOV-0060 A, B, and C and MOV-0061, A, B, .and C may have power removed to support the fHAR (fire Hazard Analysis Report) assumptions.

1 l SOUTH TEXAS - UN1151 & 2 3/4 5-11 Unit 1 - Amendment No. !, 41 Unit 2 - Amendment No.18 9311160269 931105 PDR ADOCK 05000498 P PDR u

' A TT.Ti! MENT

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q CONTAINMENT SYSTfMS

[dE OF. . . _ _____

i 3/4.6.2 DEPRES$URIZATION AND C0011NG SYSTEMS CONTAINMENT SPRAY SYSTEM

_llMIT1HG CQtiDll10N 50R OPERATION 3.6.2.1 Three independent Containment Spray Systems shall be OPERABLE.with each

Spray System capable of taking suction from the RW5T and transferring suction to the containment sump.

ADPLICABILITY: H3 DES 1, 2, 3, and 4.

ACTION:

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Vith one Containment Spray System if,)erable, restore the inoperable Spray '

System to OPERABLE status within M ... . or be in at least HDT STANDBY within  ;

the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />; restore the inoperable Spray System to OPERABLE status within the next 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be 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 />. .

SUPVElllANCE REOU!REMENTS

4. 6. 2. I Each Containment Spray System shall be demonstrated OPERABLE:

a.

At least once per 31 days by verifying that each valve.(manual, power-operated, or automatic) in the flow path that is not locked, i sealed, or otgrgise gure,djn,posgon,, ig.in its corgtt position;

b. p. ..n .-

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that on recirculation flow, each pump develops a '

By verifyinghressure differential te*e' of greater than or equal to 253 psid % e

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tested fu esuont 9 : : to

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c. . At least once per 18 months during shutdown, by:

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1) Verifying that each automatic valve in the flow path actuates

- to its correct position on a Containment Pressure High 3 test signal, and  :

2) Verifying that each spray pump starts automatically on a Contain-ment Pressure High 3 test signal coincident with a sequencer start signal. .

d. At least once per 5 years by performing an air or smoke flow test through each spray header and verifying each spray ho'221e is ,

unobstructed. '

t SOUTH TEXA5 - UN1151 & 2 3/4 6-14