ML051890237
| ML051890237 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 07/07/2005 |
| From: | NRC/NRR/DLPM |
| To: | |
| Fields M B ,NRR/DLPM,415-3062 | |
| Shared Package | |
| ML051880505 | List: |
| References | |
| TAC MC1933, TAC MC1934, TAC MC1935 | |
| Download: ML051890237 (5) | |
Text
MSSVs 3.7.1 3.7 PLANT SYSTEMS 3.7.1 Main Steam Safety Valves (MSSVs)
LCO 3.7.1 APPLICABILITY:
The MSSVs shall be OPERABLE as specified in Table 3.7.1-1 and Table 3.7.1-2.
MODES 1. 2. and 3 ACTIONS NOTE-------------------------------------
Separate Condition entry is allowed for each MSSV.
CONDITION REQUIRED ACTION COMPLETION TIME A. One to four required A.1 Reduce power to less 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> MSSVs per steam than or equal to the generator inoperable applicable % RTP in MODES 1 or 2.
listed in Table 3.7.1-1.
AND A.2 Reduce the variable 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> overpower trip - high setpoint in accordance with Table 3.7.1-1.
B. Required Actions and B.1 Be in MODE 3.
6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> associated Completion Times of Condition A not met.
OR Five to eight required MSSVs per steam generator inoperable in MODES 1 or 2.
(Continued)
I PALO VERDE UNITS 1,2.3 3.7.1-1 AMENDMENT NO. Ago-7 155
MSSVs 3.7.1 ACTIONS (continued)
CONDITION REQUIRED ACTION COMPLETION TIME C. Required Action and C.1 Be in MODE 4.
6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> associated Completion Time of Condition B not met.
D. More than eight D.1 Be in MODE 3.
6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> required MSSVs per steam generator inoperable.
AND D.2 Be in MODE 4.
12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> PALO VERDE UNITS 1,2,3 3.7.1-2 AMENDMENT NO. 447.,
155
MSSVs 3.7.1 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY
.9.
NOTE--------------------
Not required to be performed prior to entry into MODE 3.
Verify each required MSSV lift setpoint per Table 3.7.1-2 in accordance with the Inservice Testing Program. Following testing, lift settings shall be within
+/- 1%.
In accordance with the Inservice Testing Program PALO VERDE UNITS 1.2.3 3.7.1-3 AMENDMENT NO. Aid1, i55
MSSVs 3.7.1 Table 3.7.1-1 (page 1 of 1)
Variable Overpower Trip Setpoint versus OPERABLE Main Steam Safety Valves MINIMUM NUMBER NUMBER OF MAXIMUM POWER MAXIMUM ALLOWABLE OF MSSVs PER INOPERABLE
(% RTP)
VARIABLE OVERPOWER TRIP STEAM GENERATOR MSSVs PER or HIGHEST MODE SETPOINT'^a REQUIRED STEAM (Z RTP)
OPERABLE GENERATOR Units Units 1 and 3 Unit 2 1 and 3 Unit 2 10 0
100.0 100.0 111.0 111.0 9
1 98.2 90.0 108.0 99.7 8
2 87.3 80.0 97.1 89.7 7
3 76.4 68.0 86.2 77.7 6
4 65.5 56.0 75.3 65.7 5
5 MODE 3 MODE 3 NA NA 4
6 MODE 3 MODE 3 NA NA 3
7 MODE 3 MODE 3 NA NA 2
8 MODE 3 MODE 3 NA NA (a)
The VOPT setpoint is not required to be reset in MODE 3.
PALO VERDE UNITS 1, 2 AND 3 PALO VERDE UNITS 1 AND 3 PALO VERDE UNIT 2 AMENDMENT AMENDMENT NO.
AMENDMENT NO.
155 44A 449 3.7.1-4
MSSVs 3.7.1 Table 3.7.1-2 (page 1 of 1)
Main Steam Safety Valve Lift Settings VALVE NUMBER
____LIFT SETTING Steam Generator #1 Steam Generator #2 (psig +/- 3X)
SGE PSV 572 SGE PSV 554 1250 SGE PSV 579 SGE PSV 561 1250 SGE PSV 573 SGE PSV 555 1290 SGE PSV 578 SGE PSV 560 1290 SGE PSV 574 SGE PSV 556 1315 SGE PSV 575 SGE PSV 557 1315 SGE PSV 576 SGE PSV 558 1315 SGE PSV 577 SGE PSV 559 1315 SGE PSV 691 SGE PSV 694 1315 SGE PSV 692 SGE PSV 695 1315 PALO VERDE UNITS 1.2.3 33.7.1-5 AMENDMENT NO. Add1, 155