ML20117H139

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Proposed Tech Specs 3.5.2,ECCS - Shutdown & 3.5.2.2.b SR for Units 1 & 2 Revise to Change Unit 1 CST Water Level Requirement from 12 Feet to 13 Feet & Change Unit 2 CST Water Level Requirement from 12 Feet to 15 Feet
ML20117H139
Person / Time
Site: Hatch  Southern Nuclear icon.png
Issue date: 05/21/1996
From:
GEORGIA POWER CO.
To:
Shared Package
ML20117H129 List:
References
NUDOCS 9605280045
Download: ML20117H139 (9)
v • d • e


Text

i ECCS - Shutdown

, 3.5.2 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.5.2.2 Verify, for each required core spray (CS) 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> l subsystem, the:

a. Suppression pool water level is 2 146 inches; or l b. -----------------NOTE-----------------

Only one required CS subsystem may take credit for this option during OPDRVs.

Condensate storage tank water level is 2 13 ft.

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SR 3.5.2.3 Verify, for each required ECCS injection / 31 days spray subsystem, the piping is filled with water from the pump discharge valve to the injection valve.

SR 3.5.2.4 -------------------NOTE--------------------

One LPCI subsystem may be considered OPERABLE during alignment and operation for decay heat removal if capable of being manually realigned and not otherwise inoperable.

Verify each required ECCS injection / spray 31 days subsystem manual, power operated, and l automatic valve in the flow path, that is l not locked, sealed, or otherwise secured in position, is in the correct position.

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(continued)

! 9605280045 960521 PDR ADOCK 05000321 p PDR HATCH UNIT 1 3.5-9 Proposed Amendment No. 5/9/96

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ECCS - Shutdown 3.5.2 SURVEILLANCE REQUIREMENTS (continuei)

SURVEILLANCE FREQUENCY SR. 3.5.2.2 Verify, for each required core spray (CS) 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> j' subsystem, the:

a. Suppression pool water level is a 146 inches; or i
b. -----------------NOTE-----------------

! Only one required CS subsystem may

! take credit for this option during '

i OPDRVs.

l-Condensate storage tank water level is l 2 15 ft. l l

SR 3.5.2.3 Verify, for each required ECCS injection / 31 days spray subsystem, the piping is filled with water from the pump discharge valve to the injection valve. l i

l SR 3.5.2.4 -------------------NOTE--------------------

One LPCI subsystem may be considered OPERABLE during alignment and' operation for decay heat removal if capable of being manually realigned and not otherwise inoperable.

Verify each required ECCS injection / spray 31 days subsystem manual, power operated, and i automatic valve in the flow path, that is l not locked, sealed, or otherwise secured in position, is in the correct position.

(continued)  ;

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l HATCH UNIT 2 3.5-9 Proposed Amendment No. 5/9/96  !

ECCS - Shutdown 3.5.2 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.5.2.2 Verify, for each required core spray (CS) 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> subsystem, the:

a. Suppression pool water level is 2: 146 inches; or
b. -----------------NOTE-----------------

Only one required CS subsystem may take credit for this option during OPDRVs.

Condpnsate torage tank water level is 2:p ft.

13 W

SR 3.5.2.3 Verify, for each required ECCS injection / 31 days spray subsystem, the piping is filled with water from the pump discharge valve to the injecticn valve.

SR 3.5.2.4 -------------------NOTE--------------------

One LPCI subsystem may be considered OPERABLE during alignment and operation for decay heat removal if capable of being manually realigned and not otherwise inoperable.

Verify each required ECCS injection / spray 31 days subsystem manual, power operated, and automatic valve in the floi path, that is not locked, sealed, or otherwise secured in position, is in the correct position.

(continued)

HATCH UNIT 1 3.5-9 fr nd ;.~.t No. 195

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  • ECCS -_ Shutdown 3.5.2 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.5.2.2 Verify, for each required core spray (CS) 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> subsystem, the:

a. Suppression pool water level is at 146 inches; or
b. -----------------NOTE-----------------

Only one required CS subsystem may take credit for this option during OiDRVs.

Condensate orage tank water level is 2: 32 ft.

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-A ,

v SR 3.5.2.3 Verify, for each required ECCS injection / 31 days "

spray subsystem, the piping is filled with water from the pump discharge valve to the injection valve.

SR 3.5.2.4 -------------------NOTE--------------------

One LPCI subsysiem may be considered OPERABLE during alignment and operation for decay heat removal if capable of being manually realigned and not otherwise inoperable.

Verify each required ECCS injection / spray 31 days subsystem manual, power operated, and automatic valve in the flow path, that is not locked, sealed, or otherwise secured in position, is in the correct position.

(continued)

HATCH UNIT 2 3.5-9 f.;;ad;;at No. 13S

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Enclosure 4 Edwin I. Hatch Nuclear Plant Request to Revise Technical Specifications Condensate Storage Tank Leve! Indication Associated Bases Revised Pages I l

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ECCS - Shutdown

, B 3.5.2 BASES SURVEILLANCE SR 3.5.2.1 and SR 3.5.2.2 (continued)

REQUIREMENTS

.all ECCS injection / spray subsystems are inoperable unless they are aligned to an OPERABLE CST.

When suppression pool level is < 146 inches, the CS System is considered OPERABLE only if it can take suction from the I CST, and the CST water level is sufficient to provide the required NPSH for the CS pump. Therefore, a verification that either the suppression pool water level is a 146 inches or that CS is aligned to take suction from the CST and the CST contains a 150,000 gallons of water, equivalent to 13 ft, ensures that the CS System can supply at least l

, 50,000 gallons of makeup water to the RPV. The CS suction is uncovered at the 100,000 gallon level. However, as noted, only one required CS subsystem may take credit for the CST option during OPDRVs. During OPDRVs, the volume in the CST may not provide adequate makeup if the RPV were j completely drained. Therefore, only one CS subsystem is allowed to use the CST. This ensures the other required ECCS subsystem has adequate makeup volume.

4 The 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> Frequency of these SRs was developed considering operating experience related to suppression pool water level

and CST water level variations and instrument drift during the applicable MODES. Furthermore, the 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> Frequency is a considered adequate in view of other indications available i in the control room, including alarms, to alert the operator to an abnormal suppression pool or CST water level r condition.

SR 3.5.2.3. SR 3.5.2.5. and SR 3.5.2.6 The Bases provided for SR 3.5.1.1, SR 3.5.1.7, and i SR 3.5.1.10 are applicable to SR 3.5.2.3, SR 3.5.2.5, and

. SR 3.5.2.6, respectively. However, the LPCI flow rate requirement for SR 3.5.2.5 is based on a single pump, not the two pump flow rate requirement of SR 3.5.1.7.

[ SR 3.5.2.4 Verifying the correct alignment for manual, power operated, li and automatic valves in the ECCS flow paths provides

assurance that the proper flow paths will exist for ECCS 4

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(continued)

HATCH UNIT 1 B 3.5-21 PROPOSED REVISION 5/9/96 1

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ECCS - Shutdown l B 3.5.2 l l

BASES SURVEILLANCE SR 3.5.2.1 and SR 3.5.2.2 (continued)

REQUIREMENTS all ECCS injection / spray subsystems are inoperable unless i they are aligned to an OPERABLE CST. '

I When suppression pool level is < 146 inches, the CS System '

is considered OPERABLE only if it can take suction from the l CST, and the CST water level is sufficient to provide the i required NPSH for the CS pump. Therefore, a verification that either the suppression pool water level is a 146 inches or that CS is aligned to take suction from the CST and the CST contains 2 150,000 gallons of water, equivalent to 15 ft, ensures that the CS System can supply at least l 50,000 gallons of makeup water to the RPV. The CS suction is ur. covered at the 100,000 gallon level. However, as noted, only one required CS subsystem may take credit for i the CST option during OPDRVs. During OPDRVs, the volume in '

the CST may not provide adequate makeup if the RPV were  !

completely drained. Therefore, only one CS subsystem is  !

allowed to use the CST. This ensures the other required ECCS subsystem has adequate makeup volume.

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The 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> Frequency of these SRs was developed considering operating experience related to suppression pool water level i and TST water level variations and instrument drift during the applicable MODES. Furthermore, the 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> Frequency is considered adequate in view of other indications available I

in the control room, including alarms, to alert the operator to an abnormal suppression pool or CST water level l condition.

4 SR 3.5.2.3. SR 3.5.2.5. and SR 3.5.2.6 The Bases provided for SR 3.5.1.1, SR 3.5.1.7, and SR 3.5.1.10 are applicable to SR 3.5.2.3, SR 3.5.2.5, and SR 3.5.2.6, respectively. However, the LPCI flow rate requirement for SR 3.5.2.5 is based on a single pump, not the two pump flow rate requirement of SR 3.5.1.7.

SR 3.5.2.4 Verifying the correct alignment for manual, power operated, and automatic valves in the ECCS flow paths provides assurance that the proper flow paths will exist for ECCS (continued)

HATCH UNIT 2 B 3.5-21 PROPOSED REVISION 5/9/96 L

l ECCS - Shutdown i

  • B 3.5.2 BASES i

i SURVEILLANCE SR 3.5.2.1 and SR 3.5.2.2 REQUIREMENTS (continued) all ECCS injection / spray subsystems are inoperable unless they are aligned to an OPERABLE CST.

i When suppression pool level is < 146 inches, the CS System

! is considered OPERABLE only if it can take suction from the CST, and the CST water level is sufficient to provide the r NPSH for the CS pump. Therefore, a verification at ei the suppression pool water level is a 146 inches or that CS s aligned to take suction from the CST and the i

CST contain 2 150,000 gallons of water, equivalent to 2 0 W ft, en res that the CS System can supply at least 50,000 gall ns of makeup water to the RPV. The CS suction i

' is uncov r at the 100,000 gallon level. However, as oted, y one required CS subsystem may take credit for t option during OPDRVs. During OPDRVs, the volume in the CST may not provide adequate makeup if the RPV were

_ completely drained. Therefore, only one CS subsystem is allowed to use the CST. This ensures the other required ECCS subsystem has adequate makeup volume.

The 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> Frequency of these SRs was developed considering operating experience related to suppression pool water level and CST water level variations and instrument drift during the applicable MODES. Furthermore, the 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> Frequency is considered adequate in view of other indications available in the control room, including alarms, to alert the operator to an abnormal suppression pool or CST water level condition.

SR 3.5.2.3. SR 3.5.2.5. and SR 3.5.2.6 The Bases provided for SR 3.5.1.1, SR 3.5.1.7, and SR 3.5.1.10 are applicable to SR 3.5.2.3, SR 3.5.2.5, and SR 3.5.2.6, respectively. However, the LPCI flow rate requirement for SR 3.5.2.5 is based on a single pump, not the two pump flow rate requirement of SR 3.5.1.7.

_ SR 3.5.2.4 Verifying the correct alignment for manual, power operated, and automatic valves in the ECCS flow paths provides assurance that the proper flow paths will exist for ECCS (continued)

HATCH UNIT 1 B 3.5-21 -REY!SIZ 3

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ECCS - Shutdown B 3.5.2 BASES

! SURVEILLANCE SR 3.5.2.1 and SR 3.5.2.2 (continued)

REQUIREMENTS all ECCS injection / spray subsystems are inoperable unless j- they are aligned to an OPERABLE CST.

When suppression pool level is < 146 inches, the CS System i

is considered OPERABLE only if it can take suction from the CST, and the CST water level is sufficient to provide the required NPSH for the CS pump. Therefore, a verification that either the suppression pool water level is = 146 inches tha CS is aligned to take suction from the CST and the l CST cont ins a 150,000 gallons of water, equivalent to I

1 'IS ,E ft, e ;ures that the CS System can supply at least 50,000 lons of makeup water to the RPV. The CS suction i is un ered at the 100,000 gallon level. However, as

, only one required CS subsystem may take credit for the CST option during OPDRVs. During OPDRVs, the volume in i the CST may not provide adequate makeup if the RPV were

? completely drained. Therefore, only one CS subsystem is allowed to use the CST. This ensures the other required ECCS subsystem has adequate makeup volume.

The 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> Frequency of these SRs was developed considering operating experience related to suppression pool water level and CST water level variations and instrument drift during the applicable MODES. Furthermore, the 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> Frequency is considered adequate in view of other indications available in the control room, including alarus, to alert the operator to an abnormal suppression pool or CST water level condition.

SR 3.5.2.3. SR 3.5.2.5. and SR 3.5.2.6 The Bases provided f'or SR 3.5.1.1, SR 3.5.1.7, and SR 3.5.1.10 are applicable to SR 3.5.2.3, SR 3.5.2.5, and SR 3.5.2.6, respectively. However, the LPCI flow rate requirement for SR 3.5.2.5 is based on a single pump, not the two pump flow rate requirement of SR 3.5.1.7. t I

SR 3.5.2.4 i

Verifying the correct alignment for manual, power operated, and automatic valves in the ECCS flow paths provides assurance that the proper flow paths will exist for ECCS (continued)

HATCH UNIT 2 B 3.5-21 REVI'; ION 1

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