ML20063F212
| ML20063F212 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 08/24/1982 |
| From: | ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML20063F160 | List: |
| References | |
| NUDOCS 8208310172 | |
| Download: ML20063F212 (2) | |
Text
'sO
=g BS 83 Table 3.5.1-1 (Cont'd)
F,1 OTHER SAFETY RELATED SYSTEMS O
8P3 1
2 3
4 5
No of Operation Action TurJ channels Min.
Min.
if conditions of EU#
No. of for sys-operable degree of column 3 or 4 Functional Unit Channels tem trip channels redundancy cannot be met 2.
Steam line break instrumenta-tion control system (SLBIC).
(a) SLBIC Control & Logic Channels 2
1 2
1 Notes 9, 5 3.
Pressurizer level channels 3
N/A 2
1 Note 10 4.
Emergency Feedwater flow channels 2/S.G.
N/A 1
0 Note 10 5.
RCS subcooling margin monitors 2
N/A 1
0 Note 10 6.
Electromatic relief valve flow monitor 2
N/A 1
0 Note 11 7.
Electromatic relief block valve flow monitors 1
N/A 1
0 Note 12 8.
Pressurizer code safety valve flow monitors 2/ valve N/A 1/ valve 0
Note 10 9.
Degraded Voltage Monitoring a.
4.16 KV Emergency Bus Undervoltage 2/ Bus 1/ Bus 2/ Bus 0
Note 14 b.
460 V Emergency Bus Undervoltage
- 1/ Bus 1/ Bus 1/ Bus 0
Notes 13, 14 10.
Chlorine Detection Systems 2
1 2
0 Notes 17, 18
- Two undervoltage relays per bus are used with a coincident trip logic (2-out-of-2)
1 Table 3.5.1-1 (Cont'd)
Notes Cont'd 13.
Channels may be bypassed for not greater than 30 seconds during reactor coolant pump starts.
If the automatic bypass circuit or its alarm circuit is inoperable, the undervoltage protection shall be restored within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, otherwise, Note 14 applies.
14.
With the number of channels less than required, restore the inoperable channels to operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in hot shutdown within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in cold shutdown within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
15.
This trip function may be bypassed at up to 10% reactor power.
16.
This trip function may be bypassed at up to 20% reactor power.
17.
With no channel operable, within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> restore the inoperable channels to operable status, or initiate and maintain operation of the control room emergency ventilation system in the recirculation mode of operation, n
c2 18.
With one channel inoperable, restore the inoperable channel to operable status wihin 7 days or within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> initiate and maintain operation of the control room emergency ventilation system in the recirculation mode of operation.
a 4