ML20072P134

Proposed Tech Spec Changes Assuring Operability of Plant Protective Sys Limiting Conditions for Operation Defining Trip Setpoint Operability

ML20072P134
Person / Time
Site:	Fort Saint Vrain
Issue date:	07/11/1983
From:	PUBLIC SERVICE CO. OF COLORADO
To:
Shared Package
ML20072P129	List: ML20072P134
References
TAC-47416, NUDOCS 8307180276
Download: ML20072P134 (19)

Text

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, JUN 2 31983 4.4-1 4.4 INSTRUMENTATION AND CONTROL SYSTEMS - LIMITING CONDIT0NS FOR OPERATION Applicability Applies to the plant protective system and other critical instrumentation and controls.

Objective To assure the operability of the plant protective system, and other critical instrumentation by defining the minimum operable instrument channels and trip settings.

Specification LC0 4/4/1 - Plant Protective System Instrumentation, Limiting Conditions for Operation The limiting conditions for the plant protective system instrumentation are shown on Tables 4.4-1 through 4,4-8.

The plant protection system instrumentation shown in Tables 4.4-1 through 4.4-4 shall be Operable with their trip setpoints set consistent with the values shown in the Trip Setpoint column. With a plant protection system instrument channel trip setpoint less conservative than the value of the Allowable Value column of Tables 4.4-1 through 4.4-4, declare the channel inoperable and apply the applicable Action requirement of Tables 4.4-5 through 4.4-8 until the channel is restored to operable status with the trip setpoint adjusted consistent with the Trip Setpoint value for that channel.

Compliance with the Limiting Conditions for Operation contained in the Tables 4.4-1 through 4.4-8 is required during the Operational Modes or other conditions specified therein; except that upon failure to meet the Limiting Conditions for Operation, the associated Action requirements shall be met.

Noncompliance with a Specification shall exist when the requirements of the Limiting Condition for Operation and associated Action requirements are not met within the specified time intervals. If the Limiting Condition for Operation is restored prior to expiration of the specified time intervals, completion of the Action requirements is not required.

8307180276 830711 PDR ADOCK 05000267 P PDR

4.4-2 When a Limiting Condition for Operation is not met, except as provided in the associated Action requirements, within one hour action shall be initiated to place the unit in a Mode in which the Specification does not apply or by the following actions as applicable:

For Table 4.4-5, the reactor shall be shut down within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

For Table 4.4-6, the affected loop shall be shut down within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

For Table 4.4-7, the affected helium circulator shall be shut down within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

For Table 4.4-8, the reactor shall be shut down within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

Where corrective measures are completed that permit operation under the Action requirements, the Action may be taken in accordance with the specified time limits as measured from the time of failure to meet the Limiting Condition for Operation. Exceptions to these requirements are stated in the individual Speci fi cation s.

.This Specification is not applicable in Modes 4 or 5.

Entry into an Operational Mode or other specified condition shall not be made unless the conditions for the Limiting Condition for Operation are met without reliance on provisions contained in the Action requirements. This provision

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shall not prevent passage through or to Operational Modes as required to comply with Action requirements. Exceptions to these requirements are stated in the individual Specifications.

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4.4-3 ~

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TABLE 4.4-1 REACTOR SCRAM SYSTEM INSTRUMENTATION SYSTEM SETPOINTS No. Functional Unit Trip Setpoints Allowable Value la. Manual (Control Room) Not Applicable Not Applicable Ib. Manual (Emerency Board) Not Applicable Not Applicable 5 5

2. Startup Channel - High j[ (10 ) counts.per second j[ (1.3x10 ) counts per second 3a. Linear Channel - High -< (130) % Rated Thermal --< (132) % Rated Channels 3, 4, 5 Power Thermal Power 3b.. Linear Channel - High  ;[ (130) % Rated Thermal j[ (132) % Rated Channels 6, 7, 8 Power Thermal Power

4. Primary Coolant Moisture High Level Monitor < (64) F Dewpoint j[(65) F Dewpoint Loop Monitor < (23) F Dewpoint j[ (24) *F Dewpoint

5. Reheat Steam Temperature j[(1059) F j[(1063) F

- High

6. -Programmed Coolant Pressure See figure 4.4-1 j[ (2) psig below

- Low Trip Setpoint

7. Programmed Coolant Pressure See figure 4.4-1 j[ (2) psig above

- High Trip Setpoint e

4.4-4.: ,

' TABLE 3.3.2 ,

REACTOR SCRAM SYSTEM,1NSTRUMENTATION SYSTEM SETPOINTS No.~ Functional Unit Trip Setpoints Allowable Value

8. Hot Reheat. Header > (35) psig > (30) psig

-Pressure - Low 9.- Main ~ Steam Pressure - > (1635) psig > (1610) psig Low-

10. Plant Electrical > (320) volts for > (310) volts for System - Loss T (28) seconds T (30) seconds

11. Two-Loop Trouble Not applicable Not applicable

12. High Reactor Building < (175)"F < (185) *F Temperature (Pipe Cavity) 13 Wide Range Channel - -< (4.5) decades / min -< (5) decades / min High Rate of Change Channels 3, 4, 5' 1

4.4-5 Figure-4.4-1 PROGRAMMED COOLANT PRESSURE TRIP SETP0INTS

Define Programmed Trip Setpoints for Low and High primary coolant pressure as done -in figure 7.1-14 of FSAR.

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TABLE'4.4-2 LOOP SHUTDOWN SYSTEM INSTRUMENTATION SYSTEM SETPOINTS ,

N2 Functional Unit Trip Setpoints Allowable Value-

'la. Steam Pipe _ Rupture.Under -< (8.7) Volts dc -'< (8.9) Volts dc PCRV, Loop 1 lb. Steam Pipe Rupture Under .< (8.7) Volts dc

- -< (8.9) Volts dc PCRV, Loop 2 Ic.. Steam Pipe Rupture North -< (8.7) Volts dc -< (8.9) Volts dc Pipe Cavity, Loop 1

Id Steam Pipe Rupture, South f (8.7) Volts dc f (8.9) Volts dc

. Pipe _ Cavity, Loop 1 lo. -Steam Pipe Rupture,. North I (8.7) Volts dc I (8.9) Volts dc Pipe Cavity, Loop 2 If. Steam Pipe Rupture, South -< (8.7) Volts dc -< (8.9) Volts dc Pipe Cavity, Loop 2 2a. High Pressure, Pipe 1 (1.5).in W.g. f (2.0) in W.g.

Cavity 2b. High Temperature, Pipe 1 (125) *F 1 (127) F Cavity 2c. High Pressure, Under < (1.5) in W.g. 1 (2.0) in W.g.

PCRV 2d . .- High Temperature, Under I (125) F 1 (127) *F PCRV 3a. (See Table 4.4-3)

. 3 b . _- (See Table 4.4-3)

4.4-7 TABLE 4.4-2 (continued)

LOOP SHUTDOWN SYSTEM INSTRUMENTATION SYSTEM SETPOINTS -

flot. Functional Unit Trip Setpoints Allowable Value 4a. . . Circulator 1A and IB Not Applicable Not Applicable Shutdown - Loop Shut-down Logic 4b. Circulator IC-and ID Not Applicable Not Applicable Shutdown -Loop Shut-down Logic Sa. Steam Generator Pene- j[ (757) psig < (762) psig tration Overpressure,.

Loop 1 Sb. Steam Generator Pene- j[ (757) psig ji(762) psig tration-Overpressure, Loop 2 6a. High Reheat Header j[ (4.5) mr/hr above j[ (5) mr/hr above Activity, Loop 1 background 0 100% background 0 100%

load load 6b. High Reheat' Header -< (4.5) mr/hr above -< (5) mr/hr above Activity, Loop 2 background 0 100% background 0 100%

load load 7a. Low Superheat Header > (815) *F 2,(810) *F .

Tenperature, Loop 1

] 7b. Low Superheat Header 2,(815) F 2,(810) F Temperature, Loop 2 7c. High Differential  ;< (47) F j[ (50) *F Temperature Between Loop l and Loop 2

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TABLE 4.4-3 CIRCULATOR TRIP SYSTEM INSTRUMENTATION TRIP SETPOINTS -

fio.. Functional Unit- Trip Setpoints Allowable Value

1. Circulator Speed - Low -See figure 4.4-2 j: 75 rpn below

, Trip Setpoint .

2a. Feedwater Flow . Low 2,(10) % 2 (9.5) %

2b. Programmed Feedwater See figure 4.4-2 ~< (3) % below Flow -Low Trip Setpoint

3. Loss of Circulator ]L (485) psid 2,(475) psid Bearing Water

4. Circulator Penetration j[ (757) psig  ;[ (762) psid Trouble 15 . Circulator Drain 2 (8) psid 2,(7) psig Mal function

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' 6. Circulator Speed - High j[ (10,700) rpm j( (10,830) rpn (Steam Drive)

7. Manual Not Applicable Not Applicable

8. Circulator  ;[ (75) in H 20 j( (77) in H O2 Seal Malfunction

]; (-6) in H 2O 2, (-5) in H 2O

9. Circulator. Speed - j( (8,550) rpm j[ (8,610) rpm High (Water Drive)

4,4-9 1

Figure 4.4-2 PROGRAMMED LOW CIRCULATOR SPEED AND LOW FEEDWATER FL0d TRIP SETPOINTS

' Define Programmed Low Circulator Speed and Low Feedwater-Flow as done in figure 7.1-15 of FSAR.

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,-+ .. . . ~ . , , , . - - ,-,-,.4.-

. . ,, - . - . . , . - . - = , - - - - . _ , - , - , - . . _ - . - , . .

4.4-10

. TABLE 4.4-4 R0D WITHDRAWAL PR0HIBIT SYSTEM lhSTRUMENTATION-TRIP SETPOINTS flot. Functional Unit Trip Setpoints Allowable Value

1. Startup Channel - Low 2,(5) cps 2,(4) cps Count Rate 2a. ' Linear Channel - Low 1 (5) % Indicated 1 (7) % Indicated Power RWP, (Channel s Thermal Power Thermal Power 3, 4,'and 5) 2b. Linear Channel - Low < (5) % Indicated

~~ < (7) % Indicated Power RWP (Channels Thermal Power Thermal Power 6, 7, and 8) .

3a.- Linear Channel - High -< (30) % Indicated -< (32) % Indicated Power RWP (Channels Thermal Power Thermal Power 3,_4, and 5) 3b. Linear Channel -High I (30) % Indicated < (32) % Indicated Power RWP (Channels Thermal Power Thermal Power

' 6,.7, and 8) t

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TABLE 4.4-5 INSTRUMENT OPERATING' REQUIREMENTS FOR PLANT PROTECTIVE SYSTEM, SCRAM ,

Minimum Total No- Channels ^hannels Applicable No ,

Functional' Unit of channels- To Trip Operable ** Modes

• Action la. - Manual (Control Room) ' -1 1 1 1,2,3 1 lb. Manual (Emergency 3 2 2 1,2,3 2 Board) 2.. Startup Channel - High 2 1 2 4, 5 3 3a. Linear Channel - High 3 2 2 1,2,3 4 Channels 3, 4, 5 3b. Linear-Channel - High 3 2 2 1,2,3 '4 Channels 6, 7, 8

4. Primary Coolant Moisture ***

High Level Monitor. 2 2 1 2, 3 5 Loop Monitor (Trip is 3 2 2 2, 3 4 coincident with 1 of 2 High Level Monitor) .

5. Reheat Steam Temperature 3 2 2 3 4

.High

6. Programmed Coolant 3 2 2 3 4 Pressure - Low

7. Programmed Coolant 3 2 2 2, 3 4 Pressure - High

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4.4-12

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1 TABLE 4.4-5 (continued)

INSTRUMENT OPERATING REQUIREMENTS FOR PLANT PROTECTIVE SYSTEM, SCRAM J.

Minimum Total No Channel s Channels Applicable NJ Functional Unit . of channels To Trip Operable ** Modes

• Action

8. Hot Reheat Header- 3 2 2 3 4 Pressure - Low

9. Main Steam Pressure 3 2 2 3 4

- Low

10. Plant' Electrical 3 2 2 1,2,3 4 System

. Loss

11. Two Loop Trouble 2 1 2 3 6

12. High Reactor Building 3 2 2 2, 3 4 Temperature (Pipe Cavity)

13. Wide Range Channel 3 2 2 1 3 High Rate of Change Channels 3, 4, 5 1

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4.4-13

-TABLE 4.4 INSTPUMENT OPERATING REQUIREMENTS FOR PLANT PROTECTIVE SYSTEM, LOOP SHUTDOWN -

- Minimum Total No Channel s Channel s Applicable N1 Functional Unit of channels To Trip Operable ** Modes

• Action la. Steam Pipe Rupture 3- 2 2 2, 3 4 Under PCRV, Loop 1-Steam' Pipe Rupture 3 2 2 2, 3 4

' 1b. . Under PCRV, Loop 2 Ic. Steam Pipe Rupture, North 3 2 2 2, 3 4 Pipe Cavity, Loop-1 Id. Steam Pipe Rupture, South 3 2 2 2, 3 4 Pipe Cavity, Loop 2 le. Steam Pipe Rupture, North 3 '2 2 2, 3 4 Pipe Cavity, Loop 2 If Steam Pipe Rupture, South 3 2 2 2, 3 4 Pipe Cavity, Loop 2 2a High Pressure, Pipe 3 2 2 2, 3 4 Cavity

- 2b. High Temperature, Pipe 3 2 2 2, 3 4 Cavity 2c. High Pressure, Under 3 2 -2 2, 3 4 PCRV 2d. High -Temperature, Under 3 2 2 2, 3 4 ,

PCRV m __

4.4-14 *-

TABLE 4.4-6 (continued)

INSTRUMENT OPERATING REQUIREhENTS FOR. PLANT PROTECTIVE SYSTEM, LOOP SHUTDOWN Minimum Total: No Channel s Channel s Applicable fijt- . Functional Unit of channels- To Trip Operable ** Modes

• Action

.. 4a . Circulator lA and 18- 2 1 2 2, 3 7 Shutdown - Loop Shut-down Logic 4b. Circulator 1C and 1D 2 1 2 2, 3 7 Shutdown - Loop Shut-down Logic-Sa. . Steam Generator.Pene- 3 2 2 2, 3 4 tration Overpressure, Loo, 1 Sb. Steam Generator Pene- 3 2 2 2, 3 4 tri. ion Overpressure, Loop 2.

6a. High Reheat Header 3 2 2 2, 3 4 Acitvity, Loop 1 6b. High Reheat Header 3 2 2 2, 3 4 Activity,. Loop 2

-7a. Low Superheat Header 3 2 2 3 4

. Temperature, Loop 1 7b. Low Superheat Header 3 2 2 3 4 Temperature, Loop 2 7c. . High Differential 3 2 2 3 4 Temperature Between Loop 1 and Loop 2

4.4-15

.. -1 TABLE 4.4 INSTRUMENT OPERATING REQUIREMENTS FOR PLANT PROTECTIVE SYSTEM, CIRCULATOR TRIP -

Minimum Total No . Channel s Channels Applicable

.No Functional Unit of channels To Trip. Operable ** Modes

• Action

1. -- -Circulator Speed - 3 2 2 3 4 Low

2. Feedwater Flow - 3 2 2 3 4 Low 2b.. Programmed Feed- 3 2 2 3 4 water Flow - Low

3. Loss of Circulator 3 2 2 1,2,3 4 Bearing Water

4. Circulator Penetration 3 2- 2 2, 3 4 Trouble

5. Circulator Drain 3 2 2 1,2,3 4 Mal function 6.- Circulator Speed - 3 2 2 1,2,3 4 High (Steam Drive)

, 7. Manual 1 1 1 1,2,3 4

8. Circulator Seal 3 2 2 4 4- Mal function

9. Circulator Speed.- 2 1 2 3 7 High (Water Drive)

10. Loop Shutdown Logic 2 1 2 3 7 9

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} o TABLE 4.4-8 INSTRUMENT OPERATING REQUIREMENTS FOR REACTOR PROTECTIVE SYSTEM,. ROD WITHDRAWAL' PR0HIBIT (RWP) .

Minimum Total No Channels Channel s ' Applicable No_ Functional Unit of channels To Trip Operable ** Modes *: Action 1.- Startup Channel-- Low- 2 1 2 1 1 Count Rate

' 2a.. Linear Channel - Low 3 2 2 3, 5 2 Power RWP (Channels

3. 4, and 5) 2b. Linear Channel - Low 3 2 2 3, 5 2 Po+er RWP ( Channel s 6 7, and 8) 3a. Linear Channel - High 3 2 2 3, 5 3 Power .RWP - (Channel s 3, 4, and 5) 3b. Linear Channel - High 3 2 2 3, 5 3 Power RSP (Channels .

6,.7, and 8)-

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f 4.4-17 TABLE NOTATION

• - Applicable Modes are defined with the Reactor Mode Switch in the run position and by the following positions of the Interlock Sequence Switch:

1 - STARTUP 2 - LOW POWER 3 - POWER OPERATION or the following positions of the Reactor Modes Switch 4 REFUELING 5 - 0FF 6 - RUN For programmed trip functions, a channel is inoperable when the channel which provides the programmed trip setpoint is inoper- .

able. Action statements apply when any part of the trip channel is inoperable, i

• • • For a primary coolant dew point moisture monitor to be considered operable, the following conditions shall be met.

1) Indicated Reactor Power Minimum sample flow Startup to 2% 1 scc /sec.

. >2% - 5% 5 scc /sec.

>5% - 20% 15 scc /sec.

>20% - 35% 30 scc /sec.

>35% - 100% 50 scc /sec.

2) Min'imum flow of item 1) is alarmed in the control room and the alarm is set in accordance with the power ranges specified.

3) The ambient temperatures indicated by both temporary thermo-

, couples mounted on the flow sensors in penetrations 81 and 83 are less than 185*F.

4) Fixed alarms of l' scc /sec and 75 scc /sec are operable.

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• 4.4-18 ACTION STATEMENTS ACTION 1 - With the number of Operable channels one less than the Minimum Channels Operable requirement, restore the inoperable channel to Operable status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />.

ACTION 2 - With the number of Operable channels one less than the Total No.

of Channels restore the inoperable channel to operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or place the inoperable channel in the tripped condition.

ACTION 3 - With the number of Operable channels one less than the Minimum Channels Operable requirement suspend all operations involving positive reactivity changes.

ACTION 4 - With the number of Operable channels one less than the Total No.

of Channels, Startup Low Power, and/or Power Operation may pro-ceed provided the following conditions are satisfied:

a. The inoperable channel is placed in the tripped condition within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />,

b. The Minimum Channels Operable requirement is met; however, the inoperable channel may be bypassed for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for surveillance testing of other channels per Specifica-tion SR 5.4.1.

ACTION 5 - With'the number of Operable channels one less than the Total No.

of Channels, Startup, Low Power, and/or Power Operation may pro-ceed provided the inoperable channel is placed in the tripped conditition within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.

ACTION 6 - With the number of Operable channels one less than the Minimum Channels Operable requirement, restore the inoperable channel to Operable status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />.

ACTION 7 - With the number of Operable channels one less than the Minimum Channels Operable requirement, restore the inoperable channel to Operable status within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

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The following statements should be added to Specification SR 5.4.1:

Surveillance Requirements shall be met during the Operational Modes or other conditions specified for individual Limiting Conditions for Operation in Tables 4.4-1 through 4.4-8 unless otherwise stated in an individual SLrveil-lance Requirement.

Each Surveillance Requirement shall be performed within the specified time interval with:

a. A maximum allowable extension not to exceed 25% of the surveil-lance interval, but

b. The combined time interval for any 3 consecutive surveillance intervals shall not exceed 3.25 times the specified surveillance interval.

Failure to perform a Surveillance Requirement within the specified time interval shall constitute a failure to meet the Operability requirements for a Limiting Condition for Operation. Exceptions to these requirements are stated in the individual Specifications. Surveillance Requirements do not have to be performed on inoperable equipment. -

Entry into Operational Mode or other specified condition shall not be made unless the Surveillance Requirement (s) associated with the Limiting Con-dition for Operation have been performed within the stated surveillance interval or as otherwise specified.

The Note 1 for Tables 5.4-1 through 5.4-4 should be changed to read:

D - Daily (i.e., delete "when in use"). This is more explicitly defined by the first paragraph above.

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