ML23067A158

Technical Specifications, Chapter 3.5, Emergency Core Cooling Systems (ECCS)

ML23067A158
Person / Time
Site:	Callaway
Issue date:	12/29/2022
From:	Union Electric Co, Ameren Missouri
To:	Office of Nuclear Reactor Regulation
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ULNRC-06782
Download: ML23067A158 (1)

Text

CHAPTER TABLE OF CONTENTS

CHAPTER 3.5

EMERGENCY CORE COOLING SYSTEMS (ECCS)

Section Page

3.5.1 Accumulators...................................................................................................... 3.5-1

ACTIONS........................................................................................................ 3.5-1 SURVEILLANCE REQUIREMENTS............................................................... 3.5-2

3.5.2 ECCS - Operating.............................................................................................. 3.5-4

ACTIONS........................................................................................................ 3.5-4 SURVEILLANCE REQUIREMENTS............................................................... 3.5-5

3.5.3 ECCS - Shutdown............................................................................................... 3.5-7

ACTIONS........................................................................................................ 3.5-7 SURVEILLANCE REQUIREMENTS............................................................... 3.5-8

3.5.4 Refueling Water Storage Tank (RWST)............................................................. 3.5-9

ACTIONS........................................................................................................ 3.5-9 SURVEILLANCE REQUIREMENTS............................................................. 3.5-10

3.5.5 Seal Injection Flow............................................................................................ 3.5-11

ACTIONS...................................................................................................... 3.5-11 SURVEILLANCE REQUIREMENTS............................................................. 3.5-12

CALLAWAY PLANT 3.5-i Accumulators 3.5.1

3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS)

3.5.1 Accumulators

LCO 3.5.1 Four ECCS accumulators shall be OPERABLE.

APPLICABILITY: MODES 1 and 2, MODE 3 with RCS pressure > 1000 psig.

ACTIONS

CONDITION REQUIRED ACTION COMPLETION TIME

A. One accumulator A.1 Restore boron 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> inoperable due to boron concentration to within concentration not within limits.

limits.

B. One accumulator B.1 Restore accumulator to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> inoperable for reasons OPERABLE status.

other than Condition A.

C. Required Action and C.1 Be in MODE 3.6hours associated Completion Time of Condition A or B AND not met.

C.2 Reduce RCS pressure to 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> 1000 psig.

D. Two or more accumulators D.1 Enter LCO 3.0.3. Immediately inoperable.

CALLAWAY PLANT 3.5-1 Amendment No. 133 Accumulators 3.5.1

SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

SR 3.5.1.1 Verify each accumulator isolation valve is fully ope n. In accordance with the Surveillance Frequency Control Program

SR 3.5.1.2 Verify borated water volume in each accumulator is In accordance 6061 gallons and 6655 gallons. with the Surveillance Frequency Control Program

SR 3.5.1.3 Verify nitrogen cover pressure in each accumulator i s In accordance 602 psig and 648 psig. with the Surveillance Frequency Control Program

(continued)

CALLAWAY PLANT 3.5-2 Amendment No. 202 Accumulators 3.5.1

SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY

SR 3.5.1.4 Verify boron concentration in each accumulator is In accordance 2300 ppm and 2500 ppm. with the Surveillance Frequency Control Program

AND

---

NOTE --------

Only required to be performed for affected accumulators

Once within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> after each solution volume increase of 70 gallons that is not the result of addition from the refueling water storage tank

SR 3.5.1.5 Verify power is removed from each accumulator In accordance isolation valve operator when RCS pressure is with the

>1000psig. Surveillance Frequency Control Program

CALLAWAY PLANT 3.5-3 Amendment No. 202 ECCS - Operating 3.5.2

3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS)

3.5.2 ECCS - Operating

LCO 3.5.2 Two ECCS trains shall be OPERABLE.

---

NOTES --------------------------------------------

1. In MODE 3, both safety injection (SI) pump flow paths may be isolated by closing the isolation valves for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> to perform pressure isolation valve testing per SR 3.4.14.1.

2. Operation in MODE 3 with ECCS pumps made incapable of injecting, pursuant to LCO 3.4.12, Cold Overpressure Mitigation System, is allowed for up to 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or until the temperature o f all

---

RCS cold legs exceeds 375°F, whichever comes first.

APPLICABILITY: MODES 1, 2, and 3.

ACTIONS

CONDITION REQUIRED ACTION COMPLETION TIME

A. One or more trains A.1 Restore train(s) to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> inoperable. OPERABLE status.

AND

At least 100% of the ECCS flow equivalent to a single OPERABLE ECCS train available.

B. Required Action and B.1 Be in MODE 3.6hours associated Completion Time not met. AND

B.2 Be in MODE 4. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />

CALLAWAY PLANT 3.5-4 Amendment No. 202 l ECCS - Operating 3.5.2

SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

SR 3.5.2.1 Verify the following valves are in the listed positi on In accordance with power to the valve operator removed. with the Number Position Function Surveillance BNHV8813 Open Safety Injection to RWST Frequency Isolation Valve Control Program

EMHV8802A Closed SI Hot Legs 2 & 3 Isolation Valve EMHV8802B Closed SI Hot Legs 1 & 4 Isolation Valve EMHV8835 Open Safety Injection Cold Leg Isolation Valve EJHV8840 Closed RHR/SI Hot Leg Recirc Isolation Valve EJHV8809A Open RHR to Accum Inject Loops 1 & 2 Isolation Valve EJHV8809B Open RHR to Accum Inject Loops 3 & 4 Isolation Valve

SR 3.5.2.2 --------------------------------- NOTE ----------------------------

Not required to be met for system vent flow paths opened under administrative control.

Verify each ECCS manual, power operated, and In accordance automatic valve in the flow path, that is not locked, with the sealed, or otherwise secured in position, is in the Surveillance correct position. Frequency Control Program

SR 3.5.2.3 Verify ECCS locations susceptible to gas In accordance accumulation are sufficiently filled with water. with the Surveillance Frequency Control Program

(continued)

CALLAWAY PLANT 3.5-5 Amendment No. 222 ECCS - Operating 3.5.2

SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY

SR 3.5.2.4 Verify each ECCS pump's developed head at the test In accordance with flow point is greater than or equal to the required the INSERVICE developed head. TESTING PROGRAM

SR 3.5.2.5 Verify each ECCS automatic valve in the flow path In accordance that is not locked, sealed, or otherwise secured in with the position, actuates to the correct position on an actual Surveillance or simulated actuation signal. Frequency Control Program

SR 3.5.2.6 Verify each ECCS pump starts automatically on an In accordance actual or simulated actuation signal. with the Surveillance Frequency Control Program

SR 3.5.2.7 Verify, for each ECCS throttle valve listed below, In accordance each mechanical position stop is in the correct with the position. Surveillance Valve Number Frequency EMV0095 EMV0107 EMV0089Control Program

EMV0096 EMV0108 EMV0090 EMV0097 EMV0109 EMV0091 EMV0098 EMV0110 EMV0092

SR 3.5.2.8 Verify, by visual inspection, each ECCS train In accordance containment sump suction inlet is not restricted by with the debris and the suction inlet strainers show no Surveillance evidence of structural distress or abnormal corrosion. Frequency Control Program

CALLAWAY PLANT 3.5-6 Amendment No. 222 ECCS - Shutdown 3.5.3

3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS)

3.5.3 ECCS - Shutdown

LCO 3.5.3 One ECCS train shall be OPERABLE.

---

NOTE ---------------------------------------------

An RHR subsystem may be considered OPERABLE during alignment and operation for decay heat removal, if capable of being manually realigned to the ECCS mode of operation.---------------------------------------------------------------------------------------------------

APPLICABILITY: MODE 4.

ACTIONS

---

NOTE ---------------------------------------------------------------------------------------------------------------------- NOTE -----------------------------------------------------------

LCO 3.0.4.b is not applicable to ECCS centrifugal charging pump subsystem.

CONDITION REQUIRED ACTION COMPLETION TIME

A. Required ECCS residual A.1 Initiate action to restore Immediately heat removal (RHR) required ECCS RHR subsystem inoperable. subsystem to OPERABLE status.

B. Required ECCS Centrifugal B.1 Restore required ECCS 1hour Charging Pump subsystem Centrifugal Charging inoperable. Pump subsystem to OPERABLE status.

C. Required Action and C.1 Be in MODE 5. 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> associated Completion Time of Condition B not met.

CALLAWAY PLANT 3.5-7 Amendment No. 202 l ECCS - Shutdown 3.5.3

SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

SR 3.5.3.1 The following SRs are applicable for all equipment In accordance with required to be OPERABLE: applicable SRs

SR 3.5.2.1 SR 3.5.2.7 SR 3.5.2.3 SR 3.5.2.8 SR 3.5.2.4

CALLAWAY PLANT 3.5-8 Amendment No. 202 l RWST 3.5.4

3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS)

3.5.4 Refueling Water Storage Tank (RWST)

LCO 3.5.4 The RWST shall be OPERABLE.

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTIONS

CONDITION REQUIRED ACTION COMPLETION TIME

A. RWST boron concentration A.1 Restore RWST to 8hours not within limits. OPERABLE status.

OR

RWST borated water temperature not within limits.

B. RWST inoperable for B.1 Restore RWST to 1hour reasons other than OPERABLE status.

Condition A.

C. Required Action and C.1 Be in MODE 3.6hours associated Completion Time not met. AND

C.2 Be in MODE 5. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />

CALLAWAY PLANT 3.5-9 Amendment No. 202 l RWST 3.5.4

SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

SR 3.5.4.1 --------------------------------- NOTE ----------------------------

Only required to be performed when ambient air temperature is < 37°F or > 100°F.

Verify RWST borated water temperature is 37°F In accordance and 100°F. with the Surveillance Frequency Control Program

SR 3.5.4.2 Verify RWST borated water volume is 394,000 In accordance gallons. with the Surveillance Frequency Control Program

SR 3.5.4.3 Verify RWST boron concentration is 2350 ppm and In accordance 2500 ppm. with the Surveillance Frequency Control Program

CALLAWAY PLANT 3.5-10 Amendment No. 202 Seal Injection Flow 3.5.5

3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS)

3.5.5 Seal Injection Flow

LCO 3.5.5 Reactor coolant pump (RCP) seal injection flow shall be within the limits of Figure 3.5.5-1.

APPLICABILITY: MODES 1, 2, and 3.

ACTIONS

CONDITION REQUIRED ACTION COMPLETION TIME

A. Seal injection flow not within A.1 Adjust manual seal 4hours limit. injection throttle valves such that the RCP seal injection flow is within the limits of Figure 3.5.5-1.

B. Required Action and B.1 Be in MODE 3.6hours associated Completion Time not met. AND

B.2 Be in MODE 4. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />

CALLAWAY PLANT 3.5-11 Amendment No. 202 l Seal Injection Flow 3.5.5

SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

SR 3.5.5.1 --------------------------------- NOTE ----------------------------

Not required to be performed until 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> after the Reactor Coolant System pressure stabilizes at 2215 psig and 2255 psig.

Verify manual seal injection throttle valves are In accordance adjusted to give a flow within the limits of with the Figure 3.5.5-1. Surveillance Frequency Control Program

CALLAWAY PLANT 3.5-12 Amendment No. 202 Seal Injection Flow 3.5.5

Figure 3.5.5-1 (page 1 of 1)

Delta P from Charging Header to RCS vs. Total Seal Injection Line Flow

CALLAWAY PLANT 3.5-13 Amendment No. 202 l