ML20083Q426
| ML20083Q426 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 05/18/1995 |
| From: | NRC (Affiliation Not Assigned) |
| To: | |
| Shared Package | |
| ML20083Q429 | List: |
| References | |
| NUDOCS 9505250329 | |
| Download: ML20083Q426 (4) | |
Text
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w TABLE 3.3-1 3,,
REACTOR TRIP SYSTEM INSTRUMENTATION 4
MINIMUM kM TOTAL NO.
CHANNELS CHANNELS APPLICABLE
- 4 FUNCTIONAL UNIT OF CHANNELS TO TRIP OPERABLE MODES ACTION o4
{8 1.
1 2
1, 2 1
' (Sm 2
1 2
3*, 4*, 5*
9 m-2.
Power Range, Neutron Flux a.
High Setpoint 4
2 3
1, 2 2
b.
Low Setpoint 4
2 3
1*,
2 2
3.
Power Range, Neutron Flux, 4
2 3
1, 2 2
High Positive Rate i
4.
Not Used l
l 5.
Intermediate Range, Neutron Flux 2
1 2
1*,
2 3
6.
Source Range, Neutron Flux a.
Reactor Trip and Indication 6
1)
Startup 2
1 2
2 4
2)
Shutdown 2
1 2
3,4,5 5
L 7.
Overtemperature N-16 4
2 3
1, 2 12 8.
Overpower N-16 4
2 3
1, 2 12 d
9.
Pressurizer Pressure--Low 4
2 3
I 6
10.
Pressurizer Pressure--High 4
2 3
1, 2 6-COMANCHE PEAK - UNITS 1 AND 2 3/4 3-2 Unit 1 - Amendment No. 10,13,14,15,20,39 Unit 2 - Amendment No. 2d,25
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3/4.3 INSTRUMENTATION 3 /4.3. I REACTOR TRIP SYSTEM INSTRUMENTATION LIMITING CONDITION FOR OPERATION
\\
3.3.1 As a minimum, the Reactor Trip System instrumentation channels and i
interlocks of Table 3.3-1 shall be OPERABLE.
APPLICABILITY: As shown in Table 3.3-1.
ACTION:
As shown in Table 3.3-1.
SURVEILLANCE RE0VIREMENTS 4.3.1.1 Each Reactor Trip System instrumentation channel and interlock and the automatic trip logic shall be demonstrated OPERABLE by the performance of the Reactor Trip System Instrumentation Surveillance Requirements specified in Table 4.3-1.
4.3.1.2 The REACTOR TRIP SYSTEM RESPONSE TINE of each Reactor trip function shall be demonstrated to be within its limit at least once per 18 months.
Each test shall include at least one train such that both trains are tested at least once per 36 months and one channel per function such that all channels are tested at least once every N times 18 months where N is the total number of redundant channels in a specific Reactor trip function as shown in the
' Total No. of Channels
- column of Table 3.3-1.
COMANCHE PEAK - UNITS 1 AND 2 3/4 3-1
3 1
TABLE 4.3-1 REACTOR TRIP SYSTEM INSTRUMENTATION SURVEILLANCE REQUIREMENTS TRIP ANALOG ACTUATING MODES FOR CHANNEL DEVICE-WHICH CHANNEL CHANNEL OPERATIONAL OPERATIONAL ACTUATION SURVEILLANCE FUNCTIONAL UNIT CHECK CALIBRATION TEST TEST LOGIC TEST IS REQUIRED 1.
Manual Reactor Trip N.A.
N.A.
N.A.
R(14)-
N.A.
1, 2, 3", 4',5*
2.
Power Range, Neutron Flux a.
High Setpoint S
D(2,4),
Q N.A.
N.A.
1, 2 M(3,4),
Q(4, 6),
R(4, 5) b.
Low Setpoint S
R(4)
S/U(1)
N.A.
N.A.
1*,
2 3.
Power Range, Neutron Flux, N.A.
R(4)
Q N.A.
N.A.
1, 2 High Positive Rate 4.
Not Used l
5.
Intermediate Range, S
R(4, 5)
S/U(1)
N.A.
N.A.
I',
2 Neutron Flux 6
6.
Source Range, Neutron Flux S
R(4,13)
S/U(1),Q(9)
N.A.
N.A.
2, 3, 4, 5 7.
Overtemperature N-16 S
D(2,4),
Q N.A.
N. A.'
1, 2 M(3, 4),
Q(4, 6),
R(4, 5) 8.
Overpower N-16 S
D(2,4),
Q-N.A.
N.A.
1, 2 R(4, 5) d 9.
Pressurizer Pressure--Low S
R Q(8)
N.A.
N.A.
I
- 10. Pressurizer Pressure--High S
R Q
N.A.
N.A.
1, 2 COMANCHE PEAK - UNITS 1 AND 2 3/4 3-8 Unit 1 - Amendment No. 10,14,15,20,39 Unit 2 - Amendment No. Ed,25
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['
TABLE 3.3-1 (Continued)
ACTION STATEMENTS (Continued)
ACTION 8 - With the number of OPERABLE channels one less than the Minimum Channels OPERABLE requirement, be in at least HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />; however, one channel may be bypassed for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for surveillance testing per Specification 4.3.1.1 or. maintenance, provided the other channel is OPERABLE.
ACTION 9 - With the number of OPERABLE channels one less than the Minimus Channels OPERABLE requirement, restore the inoperable channel to OPERABLE status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or open the reactar trip breakers within the next hour.
ACTION 10 - With the number of OPERABLE channels less than the Total Number of Channels, operation say continue provided the inoperable channels are placed in the tripped condition within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
ACTION 11 - With one of the diverse trip features (undervoltage or shunt trip attachment) inoperable, restore it to OPERABLE status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or declare the breaker inoperable and apply ACTION 8.
The breaker shall not be bypassed while one of the diverse trip fea-tures is inoperable except for the time required for performing maintenance to restore the breaker to OPERABLE status, during which time ACTION 8 applies.
ACTION 12 - With the number of OPERABLE channels one less than the Total Number of Channels, STARTUP and/or POWER OPERATION say proceed provided the following conditions are satisfied:
j a.
The inoperable channel is placed in the tripped condition within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, and b.
The Minimum Channels OPERABLE requirement is met; however, the inoperable channel may be bypassed for up to 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> for surveillance testing per Specifications 4.3.1.1 or 4.2.5.4.
ACTION 13 - With the number of OPERABLE channels one less than the Minimum Channels OPERABLE requirement, restore the inoperable channel to OPERABLE status within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> or be in at least HOT STANOBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />; however, one channel may be bypassed for up to 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> for surveillance testing per Specification 4.3.1.1, provided the other channel is OPERABLE.
COMANCHE PEAK - UNITS 1 AND 2 3/4 3-7 Unit 1 - knendment No.13 i