ML20073L002

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Proposed Tech Specs,Consisting of Tech Spec Change Request NPF-38-115 Re Generic Ltr 90-06 Implementation
ML20073L002
Person / Time
Site: Waterford Entergy icon.png
Issue date: 05/08/1991
From:
ENTERGY OPERATIONS, INC.
To:
Shared Package
ML20073K987 List:
References
GL-90-06, GL-90-6, NUDOCS 9105130160
Download: ML20073L002 (8)
v • d • e


Text

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REACT 0htCOOLANTSYSTEM OVERPRES$URE PROTECTION SYSTEMS LIMITING CONDITION FOR OPERATION

. 3,4.8.3 Lw temperature overpressure protection shall be provided by:

1 a.

At least one of the following overpressure protection systems being OPERABLE

1.

Both OPERABLE Shutdown Cooling (SOC) System suction line relief valves (SI-406A and SI-406B) each with a lift setting of less than or equal to 430 psia aligned to the Reactor Coolant

System, or, t

2.

The Reactor Coolant System depressurized with an RCS vent of

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. greater than or equal to 5.6 square inches.

b.

Establishing less than 100 F AT between RCS and steam generator temperature or ensuring the pressurizer water volume is less than 900 cubic feet (62.5%), prior to starting any reactor coolant pump.

APPLICABILITY:

MODE 4 when the temperature of any RCS cold leg is less than or equal to 285 F#, MODE 5, and MODE 6 with the reactor vessel head on, ACT10N:

a.

4 With one Shutdown Cooling System suction line relief valve inoper-able, restore the inoperable valve to OPERABLE status within 7 days, or be in at least COLD SHUTDOWN and depressurize and vent the RCS within the next 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

! b.

With no Shutdown Cooling System suction line relief valves OPERABLE and-

capable of providing Reactor Coolant System overpressure protection, either

1.

i Restore at least one Shutdown Cooling System suction relief valve to OPERABLE status within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, or

! 2.

Be in at least COLD SHUTDOWN and depressurize and vent the RCS within the next 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

, c.

In the event either the Shutdown Cooling System suction relief valves (s) or the RCS vent (s) are used to mitigate an RCS pressure transient, a l- Special Report shall be prepared and submitted to the Commission pur-suant to Spec.ification 6.9.2 within 30 days. The report shall describe the circumstances initiating the transient, the effect of the Shutdown Cooling System suction relief valve (s) or RCS vent (s) on the transient ,

and any corrective action necessary to prevent recurrence.

d.

The provisions of Specification 3.0.4 are not applicable.

C260 F during inservice leak and hydrostatic testing with Reactor Coolant System

. temperature changes restricted in accordance with Specification 3.4.8.19 ATERFORD - UNIT 3 .

3/4 4-34 AMENDMENT N0. 5

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REACTOR COOLANT SYSTEM SURVEILLANCE REOUIREMENTS 4.4.8.3.1 Each ShtJtdown Cooling System suction line relief valve shall be dsmonstrated OPEP.ABLE:

i a. By verifying that each valve in tne suction path between the Reactor l Coolant System and the shutdown cooling relief valve is key-locked open in the control room at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />,

b. At least every 30 months when tested pursuant to Specification 4.0.5.

4.4.8.3.2 The RCS vent (s) and all valves in the vent path shall be verified to be open at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />

  • when the vent (s) is being used for ovsrpressure protection.
  • Except when the vent pathway is provided with a valve which is locked, sealed, or otherwise secured in the open position, then verify these valves open at least once per 31 days.

WATERFORD - UNIT 3 3/4 4-35

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l REACTOR COOLANT SYSTEM

) BASES PRESSURE / TEMPERATURE LIMITS (Continued)

, The maximum RT for all Reactor Coolant System pressure-retaining NDT

{ materials, with the exception of the reactor pressure vessel, has been j determined to be 90*F. The Lowest Service Temperature limit line shown on i Figures 3.4-2 and 3.4-3 is based upon this RT since Article NB-2332 of NOT i Section III of the ASME Boiler and Pressure Vessel Code requires the Lowest

, Service Temperature to be RTNDT + 100'F for piping, pumps, and valves. Below this temperature, the system pressure must be limited to a maximum of 20% of

the system's hydrostatic test pressure of 3125 psia (as corrected for elevation

{

and instrument error).

The limitations imposed on the pressurizer heatup and cooldown rates and spray water temperature differential are provided to assure that the pres-i surizer is operated within the design criteria assumed for the fatigue analysis

] performed in accordance with the ASME Code requirements.

The OPERABILITY of the shutdown cooling system relief valve or an RCS vent opening of greater than 5.6 square inches ensures that the RCS will be protecteo from pressure transients which could exceed the limits of Appendix G to 10 CFR Part 50 when one or more of the RCS cold legs are less than or equal 4

to 285 F. Each shutdown cooling system relief valve has adequate relieving

, capability to protect the RCS from overpressurization when the transient is i

either (1) the start of an idle RCP with the secondary water temperature of the steam generator lets than or equal to 100*F above the RCS cold leg tempera-

tures or (2) inadvertent safety injection actuation with injection into a water-solid RCS. The limiting transient includes simultaneous, inadvertent operation of three HPSI pumps, three charging pumps, and all pressurizer backup heaters in operation. Since SIAS starts only two HPSI pumps, a-20%-

margin is realized.

The restrictions on starting a reactor coolant pump in MODES 4 and 5, with one or more RCS cold legs less than or equal to 285 F, are provided to prevent RCS pressure transients caused by energy additions from the secondary system which could exceed the limits of Appendix G to 10 CFR Part 50. The RCS I

will be protected against overpressure transients and will not exceed the limits of Appendix G by restricting starting of the RCPs to when the secondary' water temperature of each steam generator is less than 100 F above each of the l RCS cold leg temperatures. Maintaining the steam generator less than 100*F

}

above eacn of the Reactor Coolant System cold leg temperatures (even with the RCS filled solid) or maintaining a large surge volume in the pressurizer ensures that this transient is less severe than the limiting transient consi- ,

dered above.

i

' The automatic isolation setpoint of the shutdown cooling isolation valves is sufficiently high to preclude inaovertent isolation of the shutdown cooling relief valves during a pressure transient.

5 WATERFORD - UNIT 3 B 3/4 4-10 r

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j REACTOR COOLANT SYSTEM i OVERPRESSURE PROTECTION SYSTEMS LIMI. TING CONDITION FOR OPER ATION _

3.4.8.3 Two Shutdown Cooling (SDC) System suction line relief valves (SI-40GA and SI-40GB) shall be OPERABLE with a lif t setting of less than or equal to 430 psia.

APPLICABILITY: MODE 4 when the temperature of any RCS cold leg is less than or equal to 285'F', MODE 5, and MODE G when the head is on the reactor vessel and the RCS is not vented through a 5.6 square inch or larger vent.

ACTION:

a. With one SDC System suction line relief valve inoperable in MODE 4, restore the inoperable valve to OPERABLE status within 7 days, or depressurize and vent the RCS through at least a 5.G square inch vent within the next 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />,
b. With one SDC System suction line relief valve inoperable in MODES 5 or G, either (1) restore the inoperable valve to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, or (2) complete depressurization and venting of the RCS through at least a 5.6 square inch vent within a total of 32 hours3.703704e-4 days <br />0.00889 hours <br />5.291005e-5 weeks <br />1.2176e-5 months <br />.
c. With both SDC System suction line relief valves inoperable, complete depressurization and venting of the RCS through at least a 5.6 square inch vent within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />,
d. In the event either the SDC System suction line relief valve (s) or the RCS vent (s) are used to mitigate an RCS pressure transient, a Special Report shall be prepared and submitted to the Commission pursuant to Specification G.9.2 within 30 days. The report shall describe the circumstances initiating the transient, the effect of the SDC System suction line relief valve (s) or RCS vent (s) on the transient, and any corrective action necessary to prevent recurrence,
e. The provisions of Specification 3.0.4 are not applicable.

260 F during inservice leak and hydrostatic testing with Reactor Coolant System temperature changes restricted in accordance with Specification 3.4.8.lg.

ItEACTOlt COOLANT SYSTEM Sl!ItYEI1 2LANJCE_ld;Qlli11EMENTS __ _

4.4.S.3.1 Each SDC System suction line relief valve shall be demonstrated Ol' Ell AllLE:

a. by verifying in the control room at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> that each valve in the suction path between the IlCS and the SDC relief valve is open,
b. At least every 30 months when tested pursuant to Specification 4.0.5.

4.4.8.3.2 With the ItCS vented per ACTIONS a, b, or c, the ItCS vent (s) and all valves in the vent path shall be verified to be open at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />".

Except when the vent pathway is provided with a valve which is locked, sealed, or otherwise secured in the open position, then verify these valves open at least once per 31 days.

REACTOR COOLANT SYSTEM BASES l

PRESSUREA EMPERATURE LIMITS (Continued)

The maximum RT for all Reactor Coolant System pressure-retaining NOT materials, with the exception of the reactor pressure vessel, has been determined to be 90*F. The Lowest Service Temperature limit line shown on Figuru 3.4-2 and 3.4-3 is based upon this RTNDT since Article NB-2332 of Section III of the ASME Boiler and Pressure Vessel Code requires the Lowest Service Temperature to be RTNOT + 100*F for piping, pumps, and valves. Below this temperature, the system pressure must be limited to a maximum of 20% of the system's hydrostatic test pressure of 3125 psia (as corrected for elevation and instrument error).

The limitations imposed on the pressurizer heatup ano cooldown rates and spray water temperature dif ferential are provided to assure that the pres-surizer is operated within the design criteria assumed for the fatigue analysis performeo in accordance with the ASME Code requirements, The OPERABILITY of the shutdown cooling system relief valve or an RCS vent ooening of greater than 5.6 square inches ensures that the RCS will be protectec from pressure transients which could exceed the limits of Appendix G to 285'c.

to 10 CFR Part 50 when one or more of the RCS cold legs are less than or equal Each shutdown cooling system relief valve has adequate relieving capability to protect the RCS from overpressurization when the transient is either (1) the start of an idle RCP with the secondary water temperature of the steam generator less than or equal to 100*F above the RCS cold leg tempera-tures or (2) inaavertent safety injection actuation with injection into a water solid RCS. The limiting transient includes simultaneous, inadvertent operation of three HPSI pumps, three charging pumps, and all pressurizer backuo heaters in operation.

margin is realized. Since SIAS starts only two HPSI pumps, a 20% _ _

c lord locps [(lccl In MODE)

The restrictions on starting a reactor coolant pump in MODES 4 and*S, A with one or more RCS cold legs less than or equal to 285'F, are provideddo .

nDO:

prevei.t system vnich RCScouldpressureexceed thetransients caused limits of Appendix G to 10byCFR energy Part 50.additions from the N se The RCS n will be protected against overpressure transients and will not exceed the , )

limits of Appendix G by restricting starting of the RCPs to when tne secondary Qvc4ic6c,c water temperature of each steam generator is less than 100*F above each of the g '3 g '

RCS cold leg temperatures. Maintaining the steam generator less than 100 F  ;

above each of the Reactor Coolant System cold leg temperatures'(even with the j RCS filled solid) or maintaining a large surge volume in the pressurizer ensures dered above.

that this transient is less severe than the limiting transient consi-The automatic isolation setpoint of the shutdown cooling isolation valves is sufficiently high to preclude inadvartent isolation of the shutdown cooling relief valves during a pressure transient.

WAT F ORD - UNIT 3 8 3/4 4-10 l

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