ML030380394
| ML030380394 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 02/06/2003 |
| From: | Dan Collins NRC/NRR/DLPM/LPD1 |
| To: | Bezilla M FirstEnergy Nuclear Operating Co |
| References | |
| TAC MB5302 | |
| Download: ML030380394 (2) | |
Text
REACTIVITY CONTROL SYSTEMS MODERATOR TEMPERATURE COEFFICIENT (MTC)
LIMITING CONDITION FOR OPERATION 3.1.1.4 The moderator temperature coefficient (MTC) shall be:
- a.
Less positive than +0.2 x 10-4 Ak/k/*F for power levels up to -70% of RATED THERMAL POWER, with a linear ramp to 0.0 x 10- Ak/k/ 0 F at 100% RATED THERMAL POWER as shown in Figure 3.1-1 and
- b.
Less negative than -5.0 x
10-4 Ak/k/ 0 F at RATED THERMAL POWER.
APPLICABILITY:
MODES 1 and 2*#
ACTION:
With the moderator temperature coefficient outside any one of the above limits, be in HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
SURVEILLANCE REQUIREMENTS 4.1.1.4.1 The MTC shall be determined to be within its limits by confirmatory measurements.
MTC measured values shall be extrapolated and/or compensated to permit direct comparison with the above limits.
4.1.1.4.2 The MTC shall be determined at the following frequencies and THERMAL POWER conditions during each fuel cycle:
- a.
Prior to initial operation above 5% of RATED THERMAL POWER, after each fuel loading.
- b.
At any THERMAL POWER, within 7 EFPD after reaching a RATED THERMAL POWER equilibrium boron concentration of 300 ppm.
- With Keff 2 1.0.
- See Special Test Exception 3.10.4.
BEAVER VALLEY -
UNIT 1 3/4 1-5 Amendment No.-.2,51
0.9 0.8 S0.7 0.6 W 0.5 0
C.)
2 0.4
" 0.3 E
o 0.2 o 0.1 0 1_
1 I
I 0
10 20 30 40 50 60 70 80 90 100 RATED THERMAL POWER (percent)
Figure 3.1-1 Moderator Temperature Coefficient versus Power Level BEAVER VALLEY -
UNIT 1 3/4 1-5a Amendment No.- 251