ML20244D039
| ML20244D039 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 06/08/1989 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML20244D042 | List: |
| References | |
| NUDOCS 8906160055 | |
| Download: ML20244D039 (1) | |
Text
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Table 3.17.4 Instrumentation Gptrating Requirements for Other Safety Feature Functions Minimum Minimum Permissible Operable Degree of Bypass No.
Functional Unit Channels Redundancy Conditions 1
SIRW Low-Level 2(b) 1 None Switches 2
67T-Power 3(C) 1 None Comparator 3
(Deleted) j 4
Air Cooler Service 1
None None Water Flow Instr.
5 Primary and 1
None NA Secondary Rod Insertion and Out-of-Sequence Monitors 6
Fuel Pool Bldg 1
None As Reque'sted Under Crane Interlocks Adminisyggtive Control 7
Start-Up Channels 2
1(d)
Not Required Above 10'4% of Rated Power 9
9 (a)
Crane shall not be used to move material past the fuel storage pool i
unless the interlocks are available.
l (b)
One of the inoperable channels must be in the tripped condition.
(c)
If only 2 channels are operable, load shall be reduced to 70% or less of rated power.
(d)
Minimum operable channels shall be one (1) and minimum degree of-redundancy is zero (0) if shutdown neutron power levels indicated on the log range channels are greater than 3 times the lowest decade in which neutron visibility can be confirmed. Neutron visibility will be confirmed through observation of reactivity changes on neutron power level (including a 1/M plot during reactor startup) and comparing the observed changes to the changes noted on previous similar startups.
Instrumentation operability will also be verified by' comparison among the three operable channels to ensure their individual responses are in agreement.
Change No. )
3-81 Amendment No. 121 390616o05S 890608 PDR ADOCK 05000255 p
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