ML20078N486

Proposed Tech Specs,Increasing Reactor High Water Level Isolation Trip Level Setting

ML20078N486
Person / Time
Site:	Pilgrim
Issue date:	02/09/1995
From:	BOSTON EDISON CO.
To:
Shared Package
ML20078N479	List: ML20078N475 ML20078N486
References
NUDOCS 9502150359
Download: ML20078N486 (7)

Text

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PNPS Table 3.1.1 REACTOR PROTECTION SYSTEM (SCRAM) INSTRUMENTATION REQUIREMENT Operable Inst. Modes in Which Function Channels per Trip Function Trip Level Setting Must Be Operable Action (1)

Trip System (1) Refuel (7) Startup/ Hot Run MinimumlAvail. Standby 1 1 Mode Switch in Shutdown X X X A 1 1 Manual Scram X X X A IRM 3 4 High Flux 5120/125 of full scale X X (5) A 3 4 Inoperative X X (5) A APRM 2 3 High Flux (15) (17) (17) X A or B 2 3 Inoperative (13) X X(9) X A or B 2 3 High Flux (15%) 515% of Design Power X X (16) A or B 2 2 High Reactor Pressure $1063.5 psig X(10) X X A 2 2 High Drywell Pressure 52.22 psig X(8) X(8) X A 2 2 Reactor Low Water Level 211.6 In. Indicated Level X X X A l SDIV High Water Level: 538 Gallons X(2) X X A 2 2 East 2 2 West 4 4 Main Steam Line Isolation Valve Closure 510% Valve Closure X(3)(6) X(3)(6) X(6) A or C 2 2 Turbine Control Valve 2150 psig Control Oil Fast Closure Pressure at >9 Acceleration Relay X(4) X(4) X(4) A or D ,Q O O Q.

4 4 Turbine Stop Valve 510% Valve Closure X(4) X(4) X(4) A or D fj Closure nn 00

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. N OT no Revision 177 "

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Amendment No. 15;-42;-861-92;-117; 133;-147;-151;-152;-Is'+ 3/4.1-2

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PNPS TABLE 3.2.A INSTRUMENTATION THAT INITIATES PRIMARY CONTAINMENT ISOLATION Operable Instrument Channels Per Trip System (1)

Minimum Available Instrument Trio Level Setting Action (2) 2(7) 2 Reactor Low Water Level 211.6" indicated level (3) A and D l 1 1 Reactor High Pressure 5110 psig D 2 2 Reactor Low-Low Water Level at or above - 46.4 in. A l indicated level (4) 2 2 Reactor High Water Level 555.4" indicated level (5) B l 2(7) 2 High Drywell Pressure 52.22 psig A 2 2 Low Pressure Main Steam Line 2810 psig (8) B 2(6) 2 High Flow Main Steam Line 5136% of rated steam flow B 2 2 Mai Steam Line Tunnel

{ Exhaust Duct High Temperature 5170 F B

? 2 Turbine Basement Exhaust Duct High Temperature 5150 F B 1 1 Reactor Cleanup System High Flaw $300% of rated flow C i 2 2 Reactor Cleanup System High Temperature $150 F C

. Revision 177 Amendment No. 34;-421-86;-147 1 -159;-151 1-154 3/4.2-7 e

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NOTES FOR TABLE 3.2.A (Cont) 3 ". Instrument set point corresponds to 137.86 inches above top of active i fuel. .

4. Instrument set point corresponds to 79.86 inches above top of active ,

fuel.  ;

5. Not required in Run Mode (bypassed by Mode Switch).

6. Two required for each steam line.

7. These signals also start SBGTS and initiate secondary containment isolation.

8. Only required in Run Mode (interlocked with Mode Switch).

9. Deleted.

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i Revision 177 Amendment No. 147;-1511-154 3/4.2-9

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PNPS Table 3.1.1 REACTOR PROTECTION SYSTEM (SCRAM) INSTRUMENTATION REQUIREMENT Operable Inst.

Modes in Which Function Channels per Trip Function Trip Level Setting Must Be Operable Action (1)

Trip System (1)

Refuel (7) Startup/Ilot Run MinimumlAvail. Standby 1 1 Mode Switch in Shutdown X X X A 1 1 Manual Scram X X X A IRM 3 4 High Flux 5120/125 of full scale 3 4 Inoperative X X (5) A X X (5) A APRM 2 3 High Flux (15) (17) (17) X A or B 2 3 Inoperative (13) X X(9) X A or B 2 3 High Flux (15%) $15% of Design Power X X (16) A or B 2 2 High Reactor Pressure $1063.5 psig X(10) X X A 2 2 High Drywell Pressure $2.22 ps /d X(8) X(8) X A 2 2 Reactor Low Water Level 11. In. Indicated Level X X X A l

SDIV High Water Level. $38 Gallons X(2) X X A 2 2 East 2 2 West 4 4 Main Steam Line Isolation Valve Closure $10% Valve Closure X(3)(6) X(3)(6) X(6) A cr C 2 2 Turbine Control Valve >l50 psig Control 011 Fast Closure Pressure at Acceleration Relay X(4) X(4) X(4) A or D 4 4 Turbine Stop Valve $10% Valve Closure, X(4) X(4) X(4) A or D Closure y Revision 177 Amendment No. 15;-42;-86;-92;-117; 133;-147;-151--152;-154 3/4.1-2

f PNPS TABLE 3.2.A INSTRUMENTATION THAT INITIATES PRIMARY CONTAINMENT ISOIATION 6

Operable Instrument channels Per Trip System (1)

Minimum Available Instrument Trio Level Settina Action (2)

//.6

, 2(7) 2 Reactor Low Water Level _ l. " in cated level (3) A and D l

i 1 1 Reactor High Pressure 5110 psig _ yg . v D 2 2 Reactor Low-Low Water Level at ' or above - 46.3 in. A l

indicated evel (9 2 2 ff 4 Reactor High Water Level 5.3 ated level (5) B

{

2(7) 2 High Drywell Pressure $2.22 psig A 2 2 Low Pressure Main Steam Line >810 psig (8) B 2(6) 2 High Flow Main Steam Line 5136% of rated steam flow B 2 2 Main Steam Line Tunnel Exhaust Duct High Temperature $170 F B i

2 2 Turbine Basement Exhaust i Duct High Temperature 5150 F B 1 1 Reactor Cleanup System .

High Flow $300% of rated flow C 2 -

2 Reactor Cleanup System High Temperature $150 F C Revision 177 Amendment No,' 34;-42;-86;-147;-150;-1511-154 3/4.2-7

. ~ . .

NOTES FOR TABLE 3'.2.A-(Cont) 4

. 327. l(b  :

3. Instrument set point corresponds to 28.26 inches above top of active fuel. ,

71 84 .

4. Instrument set point corresponds to nches above top of active fuel.

5. .Not required in Run Mode (bypassed by Mode Switch).

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6. Two required for each steam line,

7. These signals also start SBGTS and initiate secondary containment isolation.  !

8. Only required in Run Mode (interlocked with Mode Switch).

9. Deleted.

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Revision 177  !

Amendment No. 147t-151;-154 3/4.2-9