ML20198N204
| ML20198N204 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 12/29/1998 |
| From: | COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML20198N197 | List: |
| References | |
| NUDOCS 9901060055 | |
| Download: ML20198N204 (1) | |
Text
- - _ _ _ _ _ ~ _. _ _ _ _-
TABLE 3.3-10 ACCIDENT MONITORING INSTRUMENTATION-as-g-
REQUIRED MINIMUM-
.g g
NO. OF CHANNELS INSTRUMENT-CHANNELS OPERA 8tE g
1.
Containment Pressure 2
1 h-2.
Reactor Coolant Outlet Temperature
- TH0T (Wide Range) 2 1
^
- 3. _ Reactor Coolant Inlet Temperature - TCOLD (Wide. Range) 2 1
4.
Reactor Coolant Pressure - Wide Range 2
1 y
5.
Pressurizer Water Level 2
1.
6.
Steam Line Pressure 2/ steam generator.
1/ steam generator 7.
Steam Generator Water Level - Narrow Range 1/ steam generator '1/ steam generator-8.
Steam Generator Water Level - Wide Range 1/ steam generator 1/ steam generator 9.
Refueling. Water Storage Tank Water Level 2
1 g
10.
Auxiliary Feedater Flow Rate 2/ steam generator 1/ steam generator-
[
11.
PORY Position Indicator * (0 pen / Closed) 1/ Valve 1/ Valve h
12.
PORY Block Valve Position Indicator ** (0 pen / Closed) 1/ Valve 1/ Valve 13.
Safety Valve Position Indicator (Open/ Closed) 1/ Valve-1/ Valve
--I'_
C--t e 8 --- -rt r1---
n-et-p - u3.. t.o.i (u...- no
)
7 15.
Cortainment Water Level (Wide Range) 2 1
1G.
In Core Thermocouples 4/ core quadrant 2/ core quadrant 17.
Containment High Range Area Radiation N.A.
1 18.
Auxiliary Building Vent Stack - Wide Range Noble Gas N.A.
1/ stack
- 19. Main Steam Line Radiation N.A.
1/sta line 2>
20.
1 21.
Reactor Coolant Subcooling Ma'rgin Monitor 2***
1***
P3 "b
- Not applicable if the associated block valve is in the closed position.
- Not applicable if the block valve is verified in the closed position and power is removed.
g -)
- Use monitoring channels (10 highest average core exit temperatures) in conjunction with RCS Pressure (item 4 above) to determine the subcooling margin.
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