ML20056G567

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Proposed Tech Spec Change 93-14-2,extending AOT for RHR Svc Water Sys as Well as Suppression Pool Spray & Suppression Pool Cooling Modes of RHR Sys to 288 H
ML20056G567
Person / Time
Site: Limerick Constellation icon.png
Issue date: 08/27/1993
From:
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
Shared Package
ML20056G563 List:
References
NUDOCS 9309030278
Download: ML20056G567 (4)
v • d • e


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-i ATTACHMENT 2 LIMERICK GENERATING STATION UNIT 2 i

. Docket No. 50-353 License No. NPF-85 PROPOSED TECHNICAL SPECIFICATIONS CHANGES No. 93-14-2 t

List of Attached Pages

  • UNIT 2 3/4 6-15 3/4 6-16 3/4 7-I

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9309030278 930827 II PDR ADDCK 05000353i;f P PDR j

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< CONT 81NMENT SYSTEMS

' SUPPRESSION POOL SPRAY LIMITING CONDITION FOR OPERATION i

3.6.2.2 The suppression pool spray mode of the residual heat removal (RHR) i system shall be OPERABLE with two independent loops, each loop consisting of: ,

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a. One OPERABLE RHR pump, and
b. An OPERABLE flow path capable of recirculating water from the -

suppression chamber through an RHR heat exchanger and the -

suppression pool spray sparger(s).

  • APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, and 3.

l ECTION:

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a. With one suppression pool spray loop inoperable, restore the inoperable loop to OPERABLE status within 7 days or be in at least HOT SHUTDOWN  ;

within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following l 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.#

b. With both suppression pool spray loops inoperable, restore at least one loop to OPERABLE status within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN
  • within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. ,

SURVElllANCE REQUIREMENTS 4.6.2.2 The suppression pool spray mode of the RHR system shall be demonstrated '

OPERABLE-i

a. At least once per 31 days by verifying that each valve (manual, power-operated, or automatic) in the flow path that is not locked, sealed, i

, or otherwise secured in position, is in its correct position.  ;

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b. By verifying that each of the required RHR p%.- develops a flow of -

at least 500 gpm on recirculation flow throua5 the RHR heat exchanger  !

and the suppression pool spray sparger whe;. tested pursuant to Speci- j i fication 4.0.5.  ;

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  • Whenever both RHR subsystems are inoperable, if unable to attain COLD SHUTDOWN as required by this ACTION, maintain reactor coolant temperature as low as practical by use of alternate heat removal methods.
  1. The allowed outage time (A0T) of the "A and B" loops of suppression pool spray mode may be extended up to 288 hours0.00333 days <br />0.08 hours <br />4.761905e-4 weeks <br />1.09584e-4 months <br /> (12 days) to allow for the installation of isolation valves upstream of HV-51-1(2)F014A(B) and downstream of HV-51-1(2)F068A(B) during the fifth Unit I refueling outage (IR05).

LIMERICK - UNIT 2 3/4 6-15  !

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oCONTdINMENTSYSTEMS

' SUPPRESSION POOL COOLING LIMITING CONDITION FOR OPERATION 3.6.2.3 The suppression pool cooling mode of the residual heat removal (RHR) system shall be OPERABLE with two independent loops, each loop consisting of:

a. One OPERABLE RHR pump, and
b. An OPERABLE flow path capable of recirculating water from the suppression chamber through an RHR heat exchanger.

APPLICABILITY: OPERATIONAL CONDITIONS I, 2, and 3.

ACTION:

a. With one suppression pool cooling loop inoperable, restore the inoperable loop 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 be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.#  ;
b. With both suppression pool cooling loops inoperable, be in at least HOT SHUTDOWN within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN
  • within the next 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

SURVEILLANCE REQUIREMENTS 4.6.2.3 The suppression pool cooling mode of the RHR system shall be demonstrated OPERABLE:

a. At least once per 31 days by verifying that each valve (manual, power-operated, or automatic) in the flow path that is not locked, sealed, or otherwise secured in position, is in its correct position.
b. By verifying that each of the required RHR pumps develops a flow of at least 10,000 gpm on recirculation flow through the flow path including the RHR heat exchanger and its associated closed bypass valve, the suppression pool and the full flow test line when tested pursuant to Specification 4.0.5.
  • Whenever both RHR subsystems are inoperable, if unable to attain COLD SHUTDOWN -

as required by this ACTION, maintain reactor coolant temperature as low as practical by use of alternate heat removal methods.

  1. The allowed outage time (A0T) of the "A" and "B" loops of suppression pool ,

cooling mode may be extended up to 288 hours0.00333 days <br />0.08 hours <br />4.761905e-4 weeks <br />1.09584e-4 months <br /> (12 dsys) to allow for installation ,

of isolation valves upstream of HV-51-1(2)F014A(B) and downstream of HV-51-1(2)

E068A(B) during the fifth Unit I refueling outage (IR05).

LIMERICK - UNIT 2 3/4 6-16

<  ; 3/4.7 PLANT SYSTEMS i

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3/4.7.1 SERVICE WATER SYSTEMS RESIDUAL HEAT REMOVAL SERVICE WATER SYSTEM - COMMON SYSTEM LIMITING CONDITION FOR OPERATION 3.7.1.1 At least the following independent residual heat removal service water :

(RHRSW) system subsystems, with each subsystem comprised of

a. Two OPERABLE RHRSW pumps, and i
b. An OPERABLE flow path capable of taking suction from the RHR service water pumps wet pits which are supplied from the spray pond or the ,

cooling tower basin and transferring the water through one Unit 2 RHR heat exchanger, shall be OPERABLE:

a. In OPERABLE CONDITIONS 1, 2, and 3, two subsystems.
b. In OPERABLE CONDITIONS 4 and 5, the subsystem (s) associated with i systems and components required OPERABLE by Specification 3.4.9.2, 3.9.11.1, and 3.9.11.2.

APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, 3, 4, and 5.  :

ACTION:

a. In OPERATIONAL CONDITION 1, 2, or 3:
1. With one RHRSW pump inoperable, restore the inoperable pump to  !

OPERABLE status within 30 days, or be in at least HOT SHUTDOWN l within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

2. With one RHRSW pump in each subsystem inoperable, restore at  ;

least one of the inoperable RHRSW pumps to OPERABLE status I within 7 days or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> ar.d in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

3. With one RHRSW subsystem otherwise inoperable, restore the  !

inoperable subsystem to OPERABLE status with at least one 3 OPERABLE RHRSW pump within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.#

4. With both RHRSW subsystems otherwise inoperable, restore at i least one subsystem to OPERABLE status within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN
  • within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
  • Whenever both RHRSW subsystems are inoperable, if unable to attain COLD SHUTDOWN as required by the ACTION, maintain reactor coolant temperature as low as practical by use of alternate heat removal methods.
  1. The allowed outage time (A0T) of the "A" and "B" loops of RHRSW may be extended  :

up to 288 hours0.00333 days <br />0.08 hours <br />4.761905e-4 weeks <br />1.09584e-4 months <br /> (12 days) to allow for the installation of isolation valves '

upstream of 1(2)f014A(B) and downstream of 1(2)F068A(B) during the fifth Unit 1 refueling outage (1R05).

LIMERICK - UNIT 2 3/4 7-1 ,

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