ML021130263
| ML021130263 | |
| Person / Time | |
|---|---|
| Site: | Byron, Braidwood  |
| Issue date: | 04/19/2002 |
| From: | Mahesh Chawla NRC/NRR/DLPM |
| To: | Skolds J Exelon Generation Co, Exelon Nuclear |
| Chawla, ML, NRR/DLPM/LPD III-2, 415-8371 | |
| References | |
| TAC MB3011, TAC MB3012, TAC MB3013, TAC MB3014 | |
| Download: ML021130263 (2) | |
Text
SLs 2.0 2.0 SAFETY LIMITS (SLs) 2.1 SLs 2.1.1 Reactor Core SLs In MODES 1 and 2, the combination of THERMAL POWER, Reactor Coolant System (RCS) highest loop average temperature, and pressurizer pressure shall not exceed the limits specified in the COLR; and the following SLs shall not be exceeded.
2.1.1.1 In MODE 1, the Departure from Nucleate Boiling Ratio (DNBR) shall be maintained
> 1.24 for the WRB-2 DNB correlation for a thimble cell and > 1.25 for the WRB-2 DNB correlation for a typical cell.
2.1.1.2 In MODE 2, the DNBR shall be maintained
> 1.17 for the WRB-2 DNB correlation, and Ž 1.30 for the W-3 DNB correlation.
2.1.1.3 In MODES 1 and 2, the peak fuel centerline temperature shall be maintained < 5080 0 F, decreasing by 58°F per 10,000 MWD/MTU burnup.
2.1.2 RCS Pressure SL In MODES 1, 2, 3, 4, and 5, the RCS pressure shall be maintained S2735 psig.
2.2 SL Violations 2.2.1 If SL 2.1.1 is violated, restore compliance and be in MODE 3 within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
2.2.2 If SL 2.1.2 is violated:
2.2.2.1 In MODE 1 or 2, restore compliance and be in MODE 3 within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
2.2.2.2 In MODE 3, 4, or 5, restore compliance within 5 minutes.
BYRON - UNITS 1 & 2 Amendment 127 2.0- 1
SLs 2.0 2.0 SAFETY LIMITS (SLs) 2.1 SLs 2.1.1 Reactor Core SLs In MODES 1 and 2, the combination of THERMAL POWER, Reactor Coolant System (RCS) highest loop average temperature, and pressurizer pressure shall not exceed the limits specified in the COLR; and the following SLs shall not be exceeded.
2.1.1.1 In MODE 1, the Departure from Nucleate Boiling Ratio (DNBR) shall be maintained
> 1.24 for the WRB-2 DNB correlation for a thimble cell and > 1.25 for the WRB-2 DNB correlation for a typical cell.
2.1.1.2 In MODE 2, the DNBR shall be maintained
> 1.17 for the WRB-2 DNB correlation, and Ž 1.30 for the W-3 DNB correlation.
2.1.1.3 In MODES 1 and 2, the peak fuel centerline temperature shall be maintained < 5080 0 F, decreasing by 580F per 10,000 MWD/MTU burnup.
2.1.2 RCS Pressure SL In MODES 1, 2, 3, 4, and 5, the RCS pressure shall be maintained S2735 psig.
2.2 SL Violations 2.2.1 If SL 2.1.1 is violated, restore compliance and be in MODE 3 within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
2.2.2 If SL 2.1.2 is violated:
2.2.2.1 In MODE 1 or 2, restore compliance and be in MODE 3 within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
2.2.2.2 In MODE 3, 4, or 5, restore compliance within 5 minutes.
BRAIDWOOD - UNITS 1 & 2 Amendment 122 2.0-1I