ML20058F331

Proposed Tech Specs Reflecting 7 Day AOTs & Elimination of Change Request for Essential Chilled Water AOT

ML20058F331
Person / Time
Site:	South Texas
Issue date:	11/29/1993
From:	HOUSTON LIGHTING & POWER CO.
To:
Shared Package
ML20058F317	List: ML20058F331 ST-HL-AE-4636, Forwards Rev to 930816 Proposed Changes to Ts,Reflecting 7 Day AOTs & Elimination of Change Request for Essential Chilled Water Aot,Based on Determination During Conference Call W/Nrc
References
NUDOCS 9312080071
Download: ML20058F331 (8)

Text

1 REACTIVITY CONTROL SYSTEMS CHARGING PUMPS - OPERATING UMIIING_C01fD1 HON FOLOPERATJDN 3.1.2.4 At least two charging pumps shall be OPERABLE.

APPLICAPILITY: MODES 1, 2, and 3.*

ACTION:

7 OMyf 4

With only one charging pump /0PERABLE, restore at least two charging pumps to OPERABLE status within 72 hour: or be in at least HOT STANOBY and borated to a SHUTDOWN MARGIN equivalent to at least the limit as shown in Figure 3.1-2 at 200 F within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />; restore at least two charging pumps to OPERABLE status within the next 7 days or be in COLD SHUT 00WN within the next 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

511RVEILLARCE_REQUlBEMENTS 4.1.2.4 At least two charging pumps shall be demonstrated OPERABLE by verifying, on recirculation flow, that a differential pressure across each pump of greater than or equal to 2300 psid is developed when tested pursuant to Specification 4.0.5.

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• The provisions of Specification 3.0.4 and 4.0.4 are not applicable for entry into MODE-3 for the charging pumps declared inoperable pursuant to Specifica-tion 4.1.2.3.2 provided that the charging pump is restored to OPERABLE status within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or prior to the temperature of one or more of the RCS cold legs exceeding 375 F,-whichever comes f.irst.

l (nmH If 7A5 - UN]TS 1 & 2 3/4 1-12 93120800'71 931120 1

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4 EMERGENCY CORE COOLING SYSTEMS l

3/4.5.2 ECCS SUBSYSTEMS - T GREATER THAN OR EQUAL TO 350 F avg UMIUHG30EDllID1N_EDR OPERAUDN l

l 3.5.2 Three independent Emergency Core Cooling System (ECCS) subsystems shall be OPERABLE with each subsystcm comprised of:

l a.

One OPERABLE High Head Safety Injection pump, I

b.

One OPERABLE Low Head Safety Injection pump i

1 c.

One OPERABLE RHR heat exchanger, and d.

An OPERABLE. flow path capable of taking suction from the refueling water storage tank on a Safety Injection signal and automatically transferring suction to the containment sump during the recirculation i

phase of operation through a High Head Safety Injection pump and I

into the Reactor Coolant System and through a Low Head Safety Injec-tion pump and its respective RHR heat exchanger into the Reactor Coolant System.

APPLICABILITY:

MODES 1, 2, and 3.*

I ACTION:

.r a.

With less than the above subsystems OPERABLE, but with at least two f

High Head Safety Injection pumps in an OPERABLE status, two Low Head l

Safety Injection pumps and associated RHR heat exchangers in an

- t OPERABLE status, and sufficient flow paths to accommodate,these OPERABLE Safety Injection pumps and RHR heat exchangers# restore the i

inoperable subsystem (s) to OPERABLE status within-7 So or be in l

j 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[jiOT SHUT 00WNl within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

N 7 days b.

In the event the ECCS is actuated and injects water into the Reactor i

Coolant System, a Special Report shall be prepared and submitted to i

the Commission pursuant to Specification 6.9.2 within 90 days describ-i ing the circumstances of the actuation and the total accumulated i

actuation cycles to date. The current value of the usage factor i

for each affected Safety Injection nozzle shall be provided in this l

Special Report whenever its value exceeds 0.70.

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• The provisions of Specifications 3.0.4 and 4.0.4 are not applicable for entry into MODE 3 for the Safety injection pumps declared inoperable pursuant to l

Specification 4.5.3.1.2 provided that the Safety Injection pumps are restored l

l tc OPERABLE status within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or prior to the temperature of one or more of the RCS cold legs exceeding 375 F, whichever comes first.

tlers'fy refu.r-Cd k m pggeat

,,.9, n g gjo pq&As open f/g e ver'y 48 hour5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> 5, 2

SOUlH TEXAS - UNilS 1 & 2 3/4 5-3 Unit 1 - knendment No. 4 y,

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3 /4. 5.6 RESIDUAL HEAT REMOVAL (RHR) SYSTEM j

11HITING CONDITION FOR OPERATION 2

3.5.6 Three independent Residual Heat Removal (RHR) loops shall be OPERABLE

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with each loop comprised of:

j a.

One OPERABLE RHR pump, i

b.

One OPERABLE RHR heat exchanger, and j

c.

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

APPLICABILITY: MODES 3, 2 and 3.

ACT10N:

7 day 3 With one RHR loop [ht".:rc or be in at least HOT STANDBY within the inoperable, restore the required loop to OPERABLE a.

status within 72 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 />.

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With two RHR loops inoperable, restore at least two RHR loops to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT STANDBY within i

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 />.

2 With three RHR loops inopera'ble, immediately initiate corrective I

c.

action to restore at least one RHR loop to OPERABLE status as soon i

as possible.

I SURVE1LLANCE REOUIREMENTS 4.5.6.1 Each RHR loop shall be demonstrated OPERABLE pursuant to the i

3 requirements of Specification 4.0.5.

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4.5.6.2 At least once per 18 months by verifying automatic interlock action L

of the RHR system from the Reactor Coolant System to ensure that l

a.

With a simulated or actual Reactor Coolant System pressure signal greater than or equal to 350 psig, the interlocks prevent the valves i

from being opened.

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• Valves HOV-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.

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SOUTH TEXAS - UNITS 1 & 2 3/4 5-11 Unit 1 - Amendment No. f, 41 l

Unit 2 - Amendment No. 18 t

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/ ' ;cid?.0LLEC 00PY CONTAINMENT SYSTEMS j

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DAN } 9 1993 1

{h 3/4.6.2 DEPRESSURIZATION AND COOLING SYSTEMS

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CONTAINMENT SPRAY SYSTEM

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L LIElIUiG_f 0!iDlII0fLE0B_QEEEATIO N

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t 3.6.2.1 Three independent Containment Spray Systems shall be OPERABLE with each l

Spray System capable of taking suction from the RWST and transferring suction l

to the containment sump.

j 3-APPLICABILITY: MODES 1, 2, 3, and 4.

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ACTION:

l With one Containment Spray System in9perable, restore the inopmble Spray System to OPERABLE status within ?? h"rr or be in at least HOT 51 ANDBY within 1

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 Syster; to OPERABLE state:

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 />.

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EMEILIMCLREQUIREMENIS d

4.6.2.1 Each Containment Spray System shall be demonstrated OPERABLE:

t a.

At least once per 31 days by verifying that each valve (manual, power-cperated, or automatic) in the flow path that is not locked, scaled, or otherwise secured in position, is in its correct position; On 0 St *3JtNd Te s t So g/3, b.

By verifying /that on recirculation flow, each pump develops a i

differential pressure of greater than or equal to 283 psid wher.

tested pursuant to Specification 4.0.5;

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

1)

Verifying that each automatic valve in the flow path actuates to its correct position on a Containment Pressure High 3 test signal, and t

2)

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

start signal.

l d.

At least once per 5 years by performing an air or smoke flow test through each spray header and verifying each spray nozzle is l

unobstructed.

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i SOUTH T EX/ss - Un))s 3 & 2 3/4 6-14 I

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TSI - 0 6 7 CONTAINMENT SYSTEMS CONTAINMENT COOLING SYSTEM 3

IiMITING CONDITION FOR OPERATION l

3.6.2.3 Three independent groups of Reactor Containment Fan Coolers (RCFC) shall be OPERABLE with a minimum of two units in two groups and one unit in i

the third group.

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTION:

1 With one group of the above required Reactor Containment Fan Coolers inoperabic, restore the inoperable group of RCFC to OPERABLE status within e 7 May 3

-h 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 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 />.

SURVEitiANCE REOUTREMENTS 4.6.2.3 Each group of Reactor Containment Fan Coolers shall be demonstrated OPERABLE:

a.

At least once per 44-days by:

1)

Starting each non-operating fan group from the control room, i

t and verifying that each fan group operates for at least 15 minutes, and 2)

Verifying a cooling water flow rate of greater than or equal to 550 gpm to each cooler.

t b.

At least once per 18 months by verifying that each fan group starts automatically on a Safety Injection test signal.

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i SOUTH TEXAS - UNITS 1 & 2 3/4 6-16 Unit 1 - Amendment No. 30 I

Unit 2 - Amendment No. 21

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PLdNT SYSTEMS

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1 3/4.7.3 COMPONENT COOLING VATER SYSTEM l

LIElllHLCONDJIIOR_EDR_0EERal10F 1

3.7.3 At least three independent component cooling water loops shall be i

OPERABLE.

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i APPLICABILITY: MODES 1, 2, 3, and 4.

i 7 day 5 ACTION:

With only two component cooling water [ oops OPERABLE, restore at least three loops to OPERABLE status within-72 h m o 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 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 />.

SURVE1LL&NCLEEM1RDdENIS 4.7.3 At least three component cooling water loops shall be demonstrated j

OPERABLE:

At least once per 31 days by verifying that each valve outside con-a.

tainment (manual, power-operated, or automatic) servicing safety-J related equipment that is not locked, sealed, or otherwise secured in position is in its correct position; and I

b.

At least once per 18 months during shutdown, by verifying that:

1)

Each automatic valve servicing safety-related equipment or isolating the non nuclear safety portion of the system actuates to its correct position on a Safety Injection, Loss of_0ffsite Power, Containment Phase "B" Isolation, or Low

.ge Tank test signal, as applicable, l

2)

Each Component Cooling Water System pump starts automatically on a Safety Injection or Loss of Offsite Power test signal, and 3)

The surge tank level instrumentation which provides ' automatic isolation of portions of the system is demonstrated OPERABLE by l

l performance of a CHANNEL CALIBRATION test.

c.

By verifying that each valve inside containment (manual, pcwe:-

operated, or automatic) servicing safety-related equipment that is not locied, sealed, or otherwise secured in position is in its cor-rect position prior to entering MODE 4 following each COLD SHUTDOWN of (,reater than 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> if not performed within the previous 31 days.

l SOUTH lEXAS - UNITS 3 & 2 3/4 7-12 Unit I - Amendment No. 4

~1 TSI -021 PLANT SYSTEMS TSI -060 i

3/4.7 / CONTROL ROOM MAKEUP AND CLEANUP FILTRATION SYSTEM i

Lit 11IiNGl0BDll10fLf00R_0EEEAUDll 3.7.7 Three independent Control Room Makeup and Cleanup Filtration Systems shall be OPERABLE.

l APPLICABILITY: All MODES.

.ArTION:

i MODES 1, 2, 3 and 4:

a.

With one Control Room Makeup and Cleanup Filtration System inoper-able, restore the inoperable system 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 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 />.

b.

With two Control Room Makeup and Cleanup Filtration Systems inope able, restore at least two systems to OPERABLE status within-34 ours or be in at least HOT STANDBY within the next o hours and in COLD SHUIDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

MODES 5 and 6:

a.

With one Control Room Makeup and Cleanup Filtration System inoper-able, restore the inoperable system to OPERABLE status within 7 days or initiate and maintain operation of the remaining OPERABLE Control i

Room Makeup and Cleanup Filtration Systems in the recirculation and makeup air filtration mode.

b.

With two Cnntrol Room Makeup and Cleanup filtration System inoper-l able, or with the OprRABLE Control Room Makeup and Cleanup filtration in the recirculation and makeup air filtration System, required t-t mode by ACTION a.,

mable of being powered by an OPERABLE emergency power sot.. <

. spend all operations involving CORE ALTERA-TIONS or positive reat.tavity changes.

19RVEILLMCLREQUJREMENIS 4.7.7 Each Control Ocom Makeup and Cleanup Filtration System shall be demon-strated OPERABLE:

a.

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 that the control room

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air temperature is less than or equal to 78*F; 9.2 b.

At least once per-34-days on a STAGGERED TEST BASIS by initiating, f rom the control room, flow through the HEPA filters and charcoal

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adsorbers of the makeup and cleanup air filter onits and verifying that the system operates for at least 10 continuous hours with the makeup filter unit heaten operating; j

SOUTH TEXAS - UNITS 1 & 2 3/4 7-16

0-i TSI -016

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PLANT SYSTEMS j

TSI -007 3/4.7.14 ESSENTIAL CHILLED WATER SYSTEM L1tiLIltELCOMITisd_E0LCfERAT10N.

3.7.14 At least three independent Essential Chilled Water System loops shall be OPERABLE.

l APPLICABILITY:

MODES 1, 2, 3, and 4.

t ACTION:

t With only two Essential Chilled Water System loops OPERABLE, restore three loops to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> 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 COLD SHllTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

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4.7.14 The Essential Chilled Water System shall be demonstrated OPERABLE by:

i a.

Performa. e of surveillances as required by Specification 4.0.5, and b.

At least once per 18 months by demonstrating that the system starts l

automatically on a Safety Injection test signal.

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SOUIH TEXA5 - UN115 3 & 2 3/4 7-33

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