ML20085M482
| ML20085M482 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 01/18/1974 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20085M471 | List: |
| References | |
| NUDOCS 8311080597 | |
| Download: ML20085M482 (2) | |
Text
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TABLE 3.2.8 (Ccntiturd)
Minitun N3.
Operchie Per Trip Sys (1)
Function Trip Level Setting Action Remarks 1
LPCI 3reak Detection Timer - 0 < t < 1 sec.
A 1.
Below trip setting allows logic to K40 A & 3 determine which recirculation loop
- select for injection.
I'.
3)
ADS Timer 120 see 15 A-1.
Above trip setting in conjunction with low reactor water level, high dryvell pressureandLPCIorCSSpupsrunng initiates ADS.
2 Instrument channel -
100 110 psig A
1.
Below trip setting defers ADS RHR Discharge Pressure actuation.
2 Instrument Channel 185 110 psig A
1.
Below trip setting defers ADS g
CSS Pump Discharge Pressure actuation.
g 9
2 Instrument Channel -
~< 2 psid A
1.
Above trip setting determines pump is o
Recirculation Pump A running.
Running g
R 2.
Part of LPCI Break Detection Logic 2
Instrument Channel -
_ 2 paid A
1.
Above trip setting determines pu p is Recirculation Pump B running.
Running g
2.
Part of LPCI Break Detection Logic W 2
Instrument channel -
.5_< p < 1.5 paid A
1.
Above trip setting determines cump is Recirculation Jet Pump
- running, l
Riser d/p
... w.
2.
Part of LPCI Break Detection Logic 1(3)
Core Spray Sparger to 2 psid + 0.4 paid A
1, Alarm'to detect core spray sparger Reactor Pressure Vessel d/p
( pipe break.
1 RHR (LPCI) Trip System bus N/A C
.1.
Monitors availability of power to power monitor logic systems.
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' rip Sy, (1)
Function Trip Level Setting Action Remarks t
Below trf p ' etting in conjunction with 1
Instrument channel -
100 pois ~+ 15
- A 1.
s Reactor Low Pressure containment isolation signal and both (PS-68-93 & 94 SW #1) suction valves open will close RilR (LPCI) adminulon valves.
2 Instrument Channel -
900 psig +_ 15
'A 1.
Below teip setting permissive for $!
Reactor Low Pressure actuation of LPCI break detection (PS-3-186 A & B) circuit.
2 Core Spray Auto Sequencing 6< t < 8 secs.
B 1.
With diesel power j
l Timers (5) 2.
One per motor 4
2 LPCI Auto Sequencing 0 < t < 1 sec.
B 1.
With diesci power Timers (5) 2.
One per motor O
1 RHRSW A1, Bl. Cl, and D1 13 < t_< 15 sec.
A 1.
With diesel power j
Timers l
2.
One per pump t
a 2
Core Spray and LPCI Auto O < t < 1 sec.
B
- 1. 'With normal power j
g
- {
Sequencing Timers (6) 6 < t < 8 sec.
12 < c < 16 sec.
2.
One per motor 18 < t < 24 sec.
'1 RHRSW A1, B1, Cl, and D1 27 < t < 29 sec.
A 1.
With normal power Timers 2.
One per pump
'1 LPCI Break detection Timer - 0< t< 1 sec.
A 1.
Below trip cetting permissive to K28 A & B allow logic to determine whether both recirculation pumps are on.
1 LPCI Break Detection Timer - 1 < t < 3 sec.
A 1.
Abwe trip setting permissive for K34 A & B altowing water perturbations to settle.
I
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