ML052170208
| ML052170208 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 08/05/2005 |
| From: | NRC/NRR/DLPM |
| To: | |
| Lyon C, NRR/DLPM, 415-2296 | |
| Shared Package | |
| ML052170104 | List: |
| References | |
| NUREG-1431, TAC MC7562, TAC MC7563 | |
| Download: ML052170208 (2) | |
Text
- -
I :
RTS Instrumentation 3.3.1 Table 3.3.1-1 (page 6 of 6)
Reactor Trip System Instrumentation Note 2: Overpower AT The Overpower AT Function Allowable Value shall not exceed the following nominal Trip Setpoint by more than 0.037% of AT span.
AT <AO K4S 1+ r S T-K 6 IT -T j-f 2 (AI)j Where: AT is measured RCS AT,0F.
ATo is the indicated AT at RTP,OF.
S is the Laplace transform operator, sec1 .
T is the measured RCS average temperature,0 F.
T" is the nominal Tavg at RTP, < [*]OF.
K4 * [*] K5 2 [*]/OF for increasing Tavg K62 [*]/OF when T > T"
[*]/OF for decreasing Tavg [*]/OF when T < T" 3 [*] sec f2(AI) = [*]
- These values denoted with [*] are specified in the COLR.
Cook Nuclear Plant Unit 1 3.3.1 -16 Amendment No. 287
RTS Instrumentation 3.3.1 Table 3.3.1-1 (page 6 of 6)
Reactor Trip System Instrumentation Note 2: Overpower AT The Overpower AT Function Allowable Value shall not exceed the following nominal Trip Setpoint by more than 0.038% of AT span.
AT <ATo K4 -K5 1 T3 S T-Kr[T -T']-f2(AIl)
Where: AT is measured RCS AT,0F.
ATO is the indicated AT at RTP, 0F.
S is the Laplace transform operator, sec1 .
T is the measured RCS average temperature,0 F.
T" is the nominal Tavg at RTP, s [*]'F.
K4 s [*] K5 - [*]/OF for increasing Tavg K6 2 [*]/OF when T > T"
[*]/OF for decreasing Tav. [*]/OF when T s T" T3¶ ]sec f2(AI) = [*]
- These values denoted with [*] are specified in the COLR.
Cook Nuclear Plant Unit 2 3.3.1 -16 Amendment No. 269