ML030090449

STP, Units 1 & 2, Amendment No. 146 & 134 to TS 3/4 7-4 Regarding Allowed Outage Time (AOT) for Auxiliary Feedwater Pumps (AFW) from 72 Hours to 28 Days (TAC Nos. MB3586 & MB3590)

ML030090449
Person / Time
Site:	South Texas
Issue date:	12/31/2002
From:	NRC/NRR/DLPM
To:
Thadani M, NRR/DLPM, 415-1476
Shared Package
ML030090047	List: ML030090034 ML030090449
References
TAC MB3586, TAC MB3590
Download: ML030090449 (2)

Text

TABLE 3.7-2 STEAM LINE SAFETY VALVES PER LOOP VALVE NUMBER LIFT SETTING 1 (*3%)2 I LOOP A LOOP B LOOP C LOOP D

1. PSV-7410 PVS-7420 PSV-7430 PSV-7440 1285 psig

2. PSV-7410A PVS-7420A PSV-7430A PSV-7440A 1295 psig I

3. PSV-7410B PVS-7420B PSV-7430B PSV-7440B 1305 psig

4. PSV-7410C PVS-7420C PSV-7430C PSV-7440C 1315 psig

5. PSV-7410D PVS-7420D PSV-7430D PSV-7440D 1325 psig 1The lift setting pressure shall correspond to ambient conditions of the valve at nominal operating temperature and pressure.

2The as left lift setting shall be within +/-1% following valve testing.

SOUTH TEXAS - UNITS 1 & 2 3/4 7-3 Unit 1 - Amendment No..78,103 Unit 2 - Amendment No. 67,90

PLANT SYSTEMS AUXILIARY FEEDWATER SYSTEM LIMITING CONDITION FOR OPERATION 3.7.1.2 Four independent steam generator auxiliary feedwater pumps and associated flow paths shall be OPERABLE with:

a. Three motor-driven auxiliary feedwater pumps, each capable of being powered from separate emergency busses, and

b. One steam turbine-driven auxiliary feedwater pump capable of being powered from an OPERABLE steam supply system.

APPLICABILITY: MODES 1, 2, and 3.

ACTION:

a. With one motor-driven auxiliary feedwater pump inoperable, restore the pump to OPERABLE status within 28 days.

b. With the turbine-driven auxiliary feedwater pump inoperable, or with any two auxiliary feedwater pumps inoperable, restore the affected auxiliary feedwater pump(s) to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. The provisions of Specification 3.0.4 are not applicable for entry into Mode 3 for the turbine driven pump.

c. With three auxiliary feedwater pumps inoperable, or if the required action and associated allowed outage time for a) or b) is not met, 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 />.

d. With four auxiliary feedwater pumps inoperable, immediately initiate corrective action to restore at least one auxiliary feedwater pump to OPERABLE status as soon as possible. LCO 3.0.3 and all other LCO actions requiring Mode changes are suspended until one of the four inoperable auxiliary feedwater pumps is restored to OPERABLE status.

SOUTH TEXAS - UNITS 1 & 2 3/4 7-4 Unit 1 - Amendment No. 58, 67, 87, 146 Unit 2 - Amendment No. 56, 74, 134