ML18093A223
| ML18093A223 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 07/09/1987 |
| From: | Public Service Enterprise Group |
| To: | |
| Shared Package | |
| ML18093A221 | List: |
| References | |
| NUDOCS 8707160007 | |
| Download: ML18093A223 (5) | |
Text
TABLE 3.3-4 (Continued)
ENGINEERED SAFETY FEATURE ACTUATION SYSTEM INSTRLMENTAT ION TR IP SET POINTS w
F UNCT IONA L UN IT
- 5.
TURBINE TR IP AND FEE fl.JATER ISO LAT ION
- a. Steam Generator Water Level --
High-High
- 6.
SAFEGUARDS EQUIPMENT CONTROL SYSTEM (SEC}.
- 7.
UNDERVOLTAGE, VITAL BUS
- a.
Loss of Voltage
~
- b. Sustained Degraded Voltage w
I N
O'I
- 8.
AUX! LIARY FEEllJATER
- a. Automatic Actuation Logic
- b.
Manual Initiation
- c. Steam Generator Water Level --
Low-Low
- d.
- e. S.I.
- f. Emergency Trip of Steam Generator Feedwater Pumps
- g.
Station Blackout TR IP SET POINTS
< 67% of narrow range Tnstrument span each steam generator Not Applicable
~ 70% of bus voltage
> 91.6% of bus voltage for
< 13 seconds Not Applicable Not Applicable
> 8. 5*3 of narrow range Tnstrument span each steam generator
~.70% RCP bus voltage See 1 above (All S.I. setpoints)
Not Applicable A LLOWAB LE VALUES
< 68% of narrow range Tnstrument span each steam generator Not Applicabl~
> 65% of bus voltage
> 91% of bus voltage for
< 15 seconds Not Applicable Not Applicable
> 7.5% of narrow range instrument span each steam generator
> 65% RCP bus voltage*
\\
Not Applicable e
- t:"
1-3 1-3
- t:" n
- x: :s:
l:rj z 1-3 I-'
I-'
0 Hl N
e See 6 and 7 above (SEC and Undervoltage, Vital Bus)
TAB LE 3.3-4 (Continued}
ENGINEERED SAFETY FEATURE ACTUATION SYSTEM INSTRLMENTAT ION TR IP SET POINTS F UNCT IONA L UN IT
- 5.
TURBINE TRIP AND FEECWATER ISOLATION
- a. Steam Generator Water Level --
High-High
- 6.
SAFEGUARffi EQUIPMENT CONTROL SYSTEM (SEC}
- 7.
UNDERVOLTAGE, VITAL BUS
- a.
Loss of Voltage
- b. Sustained ~graded Voltage
- 8.
AUXILIARY FEECWATER
- a. Automatic Actuation Logic
- b.
Manual Initiation
- c. Steam Generator Water Level--
Low-Low
- d.
- e. S.I.
- f. Trip of Main Feedwater Pumps
'TRIP SETPOINTS.
< 67% of narrow range Tnstrument span each steam generator Not Applicable
~ 70% of bus voltage
> 91.6% of bus voltage for
. < 13 seconds Not Applicable Not Applicable
> 8.5% of narrow range Tnstrument span each steam generator
~ 70% RCP bus voltage See 1 above (All S.I. setpoints}
Not Applicable A LLOWAB LE VALUES
< 68% of narrow range Tnstrument span each steam generator
- Not Applicable
> 65% of bus voltage
> 91% of bus voltage for
< 15 seconds Not Applicable Not Applicable
> 7.5% of narrow range Tnstrument span each steam generator
> 65% RCP bus voltage Not Applicable
- J::i t-3 t-3
- J::i n
- i::
l:rj z I
t-3 I-'
I\\.)
0 Hi I\\.) -
rri
- i:i TAB IE 3. 3-3 {Continued) t:"'i tr1 :s:
ENGINEERED SAFETY FEATURE ACTUATION SYSTEM INSTR LMENTAT ION c:::
MINIMUM z
H TOTAL NO.
CHAN NE LS CHANNELS APP LI CAB IE t-3 F UNCT IONA L UN IT OF CHANNELS TO TRIP OPERAS IE MOCES ACTION I-'
Three Loops 1 Tavg/operating 1### Tavg in 1 Tavg in any 15 loop any operating two operating loop loops OR, COINCIDENT WITH e
Steam Line Pressure-1, 2, 3###
Low
- t:"
Four Loops 1 pressure/
1 pressure 1 pressure 14*
t-3
. t-3 Operating loop any 2 1 oops any 3 loops
- t:"
()
- r:
Three Loops 1 pressure/
1### pressure 1 pressure in 15
- s:
J:rj w
Operating operating loop in any operating any 2 operating z
t-3 loop loops N
w I
- 5.
TURBINE TR IP &
N FEEGJATER ISOLATION 0
0 Hi
- a.
Steam Generator 3/loop 2/loop in any 2/loop in each 1, 2' 3 14*
N Water 1 evel --
operating loop operating loop High-High
- 6.
SAFEGUARDS EQUIPMENT 3
2 3
1,2,3,4
- 13 CONTROL SYSTEM {SEC)
- 7.
UN DERVO LTAGE, VITAL BUS
- a.
Loss of Voltage 1/bus 2
3 1, 2' 3 14*
- b.
Sustained [graded 3/bus 2/bus 3/bus 1, 2' 3 14*
Voltage
(/)
TAB LE 3. 3-3 (Continued)
~
t-t tr:l ENGINEERED SAFETY FEATURE ACTUATION SYSTEM INSTRLMENTATION
- s:
M INIML)I c::::
TOTAL NO.
CHAN NE LS CHANNELS APP LI CAB LE I
z I
H F UNCT IONA L UN IT OF CHANNELS TO TRIP OPERABLE MOCES ACTION I
1-3 N
Three Loops 1 Tavg/operating 1### T avg in 1 Tavg in any 15 loop any operating two operating loop loops OR, CO INC I CENT WITH e
Steam Line Pressure-1, 2' 3##
Low
~
Four Loops 1 pressure/
1 pressure 1 pressure 14*
1-3 1-3 Operating loop any 2 loops any 3 loops
~
(')
- i::
w Three Loops 1 pressure/
1### pressure 1 pressure in 15
- s:
tr:l
~
Operating operatj ng loop in any operating any 2 operating z
1-3 w
loop loops I
N N
0
- 5.
TURBINE TR IP &
N FEEGJATER ISOLATION 0
Hi
- a.
Steam Generator 3/loop 2/loop in any 2/loop in each 1, 2' 3 14*
N Water level--
operating loop operating loop Hi g.h-Hi gh e
- 6.
SAFEGUAR OS EQUIPMENT 3
2 3
1,2,3,4 13 CONTROL SYSTEM (SEC)
- 7.
UN DERVO LT AGE, VITAL BUS
- a.
Loss of Voltage 1/bus 2
3 1, 2' 3 14*
- b.
Sustained I:egraded 3/bus 2/bus 3/bus 1, 2' 3 14*
Voltage
l ATTACHMENT 3 FAILURE MODE ANALYSIS Normal Operation Failure With Degraded Grid LOCA
& Degraded Grid Undervoltage 2 out of 3 logic will 2 out of 3 logic will Relay be made to load bus to be made to load bus to diesel generator.
diesel generator~
Acce12table AcceEtable Timing Relay Same as above Same as above Failure Undervoltage Same as above Same as above Auxiliary Relay Failure fiFA Relay Same as above Same as above Failure Loss of Bus.with failed Bus with failed battery 125 Volt battery system would system would maintain Battery maintain connection to connection to grid.
grid.
Buses without Buses without failed faiied battery would battery would load to load to diesel.
Sarne diesel.
same as present as present design.
design.
Previousli Previousli Anal~zed Analized Loss of Same as above Same as above 125 Volt DC Branch CKT Loss of Cable
. Bus with failed cable Bus with failed cable from Bus to would maintain connected would maintain connected S.E.C.
to grid.
Other buses to qrid.
Other buses would load to diesel.
would load to diesel.
Two vital buses would Two vital buses would be available for safe be available for safe shutdown.
The ref ore shutdown.
Therefore 12reviousl~ anal~zed.
Ereviousl;t anal;tzed.
62X Defeat Alarm in control room.
Alarm in control room.
Relay
- Bus with failed 62X Bus with failed 62X relay would maintain relay would maintain connection to grid.
connection to grid.
Other buses would load Other buses would load to diesel.
Two Vital to diesel.
Two Vital buses would be available buses would be available for safe shutdown.
for safe shutdown.
Therefore ereviousl~
Therefore 12reviousl:i::
anal:i::zed *.
anal~zed.
P,otential Same as undervoltage Same as undervoltage Transformer relay failure relay failure Potential Sarne as undervoltage Same as undervoltage Transformer relay failure relay failure Prima.ry Fuse se-mpm2