ML18093A223

Proposed Tech Specs Table 3.3-4 ESFAS Instrumentation Trip Setpoints & Table 3.3-3 ESFAS Instrumentation.

ML18093A223
Person / Time
Site:	Salem
Issue date:	07/09/1987
From:	Public Service Enterprise Group
To:
Shared Package
ML18093A221	List: ML18093A220 ML18093A223
References
NUDOCS 8707160007
Download: ML18093A223 (5)

Text

TABLE 3.3-4 (Continued)

ENGINEERED SAFETY FEATURE ACTUATION SYSTEM INSTRLMENTAT ION TR IP SET POINTS FUNCT IONA L UN IT TR IP SET POINTS ALLOWAB LE VALUES

5. TURBINE TR IP AND FEE fl.JATER ISO LAT ION

a. Steam Generator Water Level -- < 67% of narrow range < 68% of narrow range High-High Tnstrument span each steam generator Tnstrument span each steam generator e

6. SAFEGUARDS EQUIPMENT CONTROL Not Applicable Not Applicabl~ :t:"

SYSTEM (SEC} . 1-3 1-3

t:"

7. UNDERVOLTAGE, VITAL BUS n

x:

a. Loss of Voltage ~ 70% of bus voltage > 65% of bus voltage :s:

l:rj w z1-3

~ b. Sustained Degraded Voltage > 91.6% of bus voltage for > 91% of bus voltage for w

< 13 seconds < 15 seconds I-'

I I-'

N O'I

8. AUX! LIARY FEEllJATER 0

a. Automatic Actuation Logic Not Applicable Not Applicable Hl N

b. Manual Initiation Not Applicable Not Applicable

c. Steam Generator Water Level --

Low-Low

> 8. 5*3 of narrow range Tnstrument span each

> 7.5% of narrow range instrument span each e

steam generator steam generator

d. Undervoltage - RCP ~.70% RCP bus voltage > 65% RCP bus voltage*

\

e. S.I. See 1 above (All S.I. setpoints)

f. Emergency Trip of Steam Not Applicable Not Applicable Generator Feedwater Pumps

g. Station Blackout 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 FUNCT IONA L UN IT 'TRIP SETPOINTS. ALLOWAB LE VALUES

5. TURBINE TRIP AND FEECWATER ISOLATION

a. Steam Generator Water Level -- < 67% of narrow range < 68% of narrow range High-High Tnstrument span each Tnstrument span each steam generator steam generator

6. SAFEGUARffi EQUIPMENT CONTROL Not Applicable *Not Applicable :J::i t-3 SYSTEM (SEC} t-3

J::i n

i::

7. UNDERVOLTAGE, VITAL BUS  :!:

a. Loss of Voltage ~ 70% of bus voltage > 65% of bus voltage l:rj zt-3

b. Sustained ~graded Voltage > 91.6% of bus voltage for

. < 13 seconds

> 91% of bus voltage for

< 15 seconds I I-'

I\.)

8. AUXILIARY FEECWATER 0

a. Automatic Actuation Logic Not Applicable Not Applicable Hi

-

I\.)

b. Manual Initiation Not Applicable Not Applicable

c. Steam Generator Water Level-- > 8.5% of narrow range > 7.5% of narrow range Low-Low Tnstrument span each Tnstrument span each steam generator steam generator

d.

• Undervoltage - RCP ~ 70% RCP bus voltage > 65% RCP bus voltage

e. S.I. See 1 above (All S.I. setpoints}

f. Trip of Main Feedwater Pumps Not Applicable Not Applicable

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 Steam Line Pressure- 1, 2, 3###

e Low

• • " .  ::t:"

t-3 Four Loops 1 pressure/ 1 pressure 1 pressure 14* . t-3

t:"

Operating loop any 2 1oops any 3 loops ()

r:

s:

Three Loops 1 pressure/ 1### pressure 1 pressure in 15 J:rj z

w Operating operating loop in any operating any 2 operating t-3

........

loop loops N

"""

w I 5. TURBINE TR IP & ......

N 0 FEEGJATER ISOLATION 0 Hi

a. Steam Generator 3/loop 2/loop in any 2/loop in each 1, 2' 3 14* N 6.

Water 1evel --

High-High SAFEGUARDS EQUIPMENT CONTROL SYSTEM {SEC) 3 operating loop 2

operating loop 3 1,2,3,4 *13 -

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:

MINIML)I c:::: TOTAL NO. CHAN NE LS CHANNELS I

z APP LI CAB LE 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### Tavg in 1 Tavg in any 15 loop any operating two operating loop loops OR, CO INC I CENT WITH Steam Line Pressure-Low 1, 2' 3##

e

~

Four Loops 1 pressure/ 1-3 1 pressure 1 pressure 14* 1-3 Operating loop any 2 loops any 3 loops ~

(')

w  :::i::

Three Loops 1 pressure/ 1### pressure 1 pressure in 15 :s:tr:l

"

~

w Operating operatj ng loop in any operating any 2 operating z 1-3 I

loop loops 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 6.

Hi g.h-Hi gh SAFEGUAR OS EQUIPMENT 3 2 3 1,2,3,4 13 e

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