ML032300021
| ML032300021 | |
| Person / Time | |
|---|---|
| Site: | Byron, Braidwood  |
| Issue date: | 08/12/2003 |
| From: | NRC/NRR/DLPM |
| To: | |
| References | |
| TAC MB6077, TAC MB6078, TAC MB6079, TAC MB6080 | |
| Download: ML032300021 (6) | |
Text
MSSVs 3.7.1 3.7 PLANT SYSTEMS 3.7.1 Main Steam Safety Valves (MSSVs)
LCO 3.7.1 APPLICABILITY:
Five MSSVs per steam generator shall be OPERABLE.
MODES 1, 2, and 3.
I ACTIONS
NOTE-------------------
Separate Condition entry is allowed for each MSSV.
CONDITION REQUIRED ACTION COMPLETION TIME A. One or more steam A.1 Reduce THE RMAL POWER 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> generators with one or to less than or equal more MSSVs inoperable.
to the Maximum Allowable % RTP specified in Table 3.7.1-1 for the number of OPERABLE MSSVs.
AND A.2
NOTE--
Only required in Mode 1.
Reduce the Power 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> Range Neutron Flux-High reactor trip setpoint to less than or equal to the Maximum Allowable X RTP specified in Table 3.7.1-1 for the number of OPERABLE MSSVs.
BYRON - UNITS 1 & 2 3.7.1 - 1 Amendment 133
MSSVs 3.7.1 ACTIONS (continued)
B Required Action 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 Time not met.
ANLD OR B.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 /> One or more steam generators with > 4 MSSVs inoperable.
SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.7.1.1
NOTE-------------
Only required to be performed in MODES 1 and 2.
Verify each/required MSSV lift setpoint per In accordance Table 3.7.1-2 in accordance with the with the Inservice Testing Program.
Following Inservice testing, lift setting shall be within +/- 1%.
Testing Program I
BYRON -
UNITS I & 2 3.7.1 - 2 Amendment 133
MSSVs 3.7.1 Table 3.7.1-1 (page 1 of 1)
OPERABLE Main Steam Safety Valves versus Maximum Allowable Power I
NUMBER OF OPERABLE
-MAXIMUM ALLOWABLE MSSVs PER STEAM POWER (% RTP)
GENERATOR 4
< 56 3
< 39 2
< 23 BYRON -
UNITS 1 & 2 3.7.1 - 3 Amendment 133
MSSVs 3.7.1 3.7 PLANT SYSTEMS 3.7.1 Main Steam Safety Valves (MSSVs)
LCO 3.7.1 APPLICABILITY:
Five MSSVs per steam generator shall be OPERABLE.
MODES 1, 2, and 3.
I ACTIONS
NOTE-------------
Separate Condition entry is allowed for each MSSV.
CONDITION REQUIRED ACTION COMPLETION TIME A. One or more steam A.1 Reduce THERMAL POWER 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> generators with one or to less than or equal more MSSVs inoperable.
to the Maximum Allowable % RTP specified in Table 3.7.1-1 for the number of OPERABLE MSSVs.
AND A.2
NOTE---
Only required in Mode 1.
Reduce the Power 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> Range Neutron Flux -
High reactor trip setpoint to less than or equal to the Maximum Allowable
% RTP specified in Table 3.7.1-1 for the number of OPERABLE MSS~s.
BRAIDWOOD -
UNITS 1 & 2 3.7.1 - 1 Amendment 128
MSSVs 3.7.1 ACTIONS (continued)
CONDITION REQUIRED ACTION COMPLETION TIME B. Required Action 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 Time not met.
AND OR B.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 /> One or more steam generators with Ž 4 MSSVs inoperable.
SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.7.1.1 NOTE--------------------
Only required to be performed in MODES 1 and 2.
Verify each required MSSV lift setpoint per In accordance Table 3.7.1-2 in accordance with the with the Inservice Testing Program.
Following Inservice testing, lift setting shall be within +/- 1X.
Testing Program I
BRAIDWOOD -
UNITS 1 & 2 3.7.1 - 2 Amendment 128
MSSVs 3.7.1
. 'Table 3.7.1-1 (page 1 of 1)
OPERABLE Main Steam Safety Valves Versus Maximum Allowable Power I
NUMBER OF OPERABLE MAXIMUM ALLOWABLE MSSVs PER STEAM POWER (% RTP)
GENERATOR 4
- 56 3
< 39 2
- 23 I
I I
I BRAIDWOOD -
UNITS 1 & 2 3.7.1 - 3 Amendment 128