ML20212A820

Proposed Tech Specs Re Motor Driven Feedwater Pump Sys

ML20212A820
Person / Time
Site:	Davis Besse
Issue date:	02/18/1987
From:	TOLEDO EDISON CO.
To:
Shared Package
ML20212A747	List: ML20212A741 ML20212A770 ML20212A820
References
TAC-64851, NUDOCS 8703030419
Download: ML20212A820 (5)

Text

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PLANT SYSTEMS MOTOR DRIVEN FEEDWATER PUMP SYSTEM LIMITING CONDITION FOR OPERATION 3.7.1.7 The Motor Driven Feedwater Pump and associated flow path to the Auxiliary Feedwater System shall be OPERABLE.

APPLICABILITY: MODES 1, 2, and 3.

ACTION:

With the Motor Driven Feedwater Pump or its associated flow path to the Auxiliary Feedwater System inoperable, restore 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 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 />.

SURVEILLANCE REQUIREMENTS 4.7.1.7 The required Motor Driven Feedwater Pump and flow path to the Auxiliary Feedwater System shall be demonstrated OPERABLE:

a. At least once per 31 days by:*

1. When the quarterly pump test is not performed, a Pump Jog Test will be performed to verify the Motor Driven Feedwater Pump OPERABLE by starting the Motor Driven Feedwater Pump (if the pump is not already running) from the control room, and by indication of flow.

2. When in MODE 1 with RATED THERMAL POWER greater than 40%,

verify that each manual valve in the Motor Driven Feedwater Pump suction and discharge lines that affect the system's capability to deliver water to the steam generators is g locked in its proper position for initial system operation.

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-o 3. When in MODE 1 with RATED THERMAL POWER greater than 40%,

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$Q verify that each power operated valve in the flow path is in its correct position.

$ 4. When in MODE I at RATED THERMAL POWER equal to or less than jylj g 40% or when in MODES 2 or 3, verify that each valve (manual eb or power operated) in the Motor Driven Feedwater Pump flow

[!e path is able to be positioned locally for delivering flow l@j to the Auxiliary Feedwater System.

(Da.j c.

• When conducting tests of the Motor Driven Feedwater Pump System in MODE 1 greater than 40% RATED THERMAL POWER which requires local manual realign-ment of valves that make the system inoperable, a dedicated individual shall be stationed at the valves (in communication with the control room) able to restore the valves to normal system OPERABLE status.

DAVIS-BESSE, UNIT 1 3/4 7- Amendment No.

1

PLANT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

(Ability is demonstrated by verifying the presence of handwheels for all manual valves and the presence of either handwheels or av'ailable power supply for motor operated valves.)

b. At least once per 92 days and prior to entry into MODE 3 from MODE 4 (if not performed in the past 92 days) by:

• and **

1. Verifying proper operation of each pover operated and automatic valve in the Motor Driven Feedwater Pump flow path to the Auxiliary Feedwater System.

2. Verifying proper operation of the Motor Driven Feedwater Pump.

c. At least once per 18 months by:

1. Verifying that there is a flow path between the Motor Driven Feedwater Pump System and the Auxiliary Feedwater System by pumping water from the Condensate Storage Tanks to the steam generators. The flow path to the steam generators shall be verified prior to entering MODE 3 from MODE 4 by either steam generator level change or Auxiliary Feedwater flow indication. Verification of Motor Driven Feedwater Pump System flow capacity is not required.

2. Verifying proper operation of the Motor Driven Feedwater Pump lube oil interlocks.

3. Verifying proper operation of manual valves by shifting the Motor Driven Feedwater Pump between the Main Feedwater System and the Auxiliary Feedwater System.

• When conducting tests of the Motor Driven Feedwater Pump System in MODE 1 greater than 40% RATED THERMAL POWER which requires local manual realign-ment of valves that make the system inoperable, a dedicated individual shall be stationed at the valves (in communication with the control room) able to restore the valves to normal system OPERABLE status.

• • If the Motor Driven Feedwater Pump cannot be tested within the time period specified, due to being aligned to the Main Feedwater System, the Surveillance Requirement shall be met within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> after the Motor Driven Feedwater Pump has been aligned to the Auxiliary Feedwater System for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.

DAVIS-BESSE, UNIT 1 3/4 7- Amendment No.

PLANT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

d. After any modification or repair to the Motor Driven Feedwater Pump System that could affect the system's capability to deliver water from the Condensate Storage Tanks to the Auxiliary Feedwater System, the affected flow path shall be demonstrated available as follows:***

1. If the modification or repair is in the Auxiliary Feedwater flow path downstream of the Motor Driven Feedwater Pump test flow line tie-in, the Motor Driven Feedwater Pump shall pump water from the Condensate Storage Tanks to the Auxiliary Feedwater System and the flow path availability will be verified by either steam generator level change or Auxiliary Feedwater flow indication.

2. If the modification or repair is upstream of the Motor Driven Feedwater Pump test flow line tie-in, the Motor Driven Feedwater Pump shall pump water from the Condensate Storage Tanks to the test flow line and the flow path availability will be verified by Motor Driven Feedwater Pump flow indication.

e. Following each extended COLD SHUTDOWN (greater than 30 days in MODE 5), by:

1. Verifying that there is a flow path between the Motor Driven Feedwater System and the Auxiliary Feedwater System by pumping water from the Condensate Storage Tanks to the steam generators. The flow path to the steam generators shall be verified prior to entering MODE 3 from MODE 4 by either steam generator level change or Auxiliary Feedwater flow indication. Verification of Motor Driven Feedwater Pump flow capacity is not required.

• • • This surveillance testing shall be performed prior to entering MODE 3 from PODE 4 if the modification is made in MODES 4, 5, or 6. Verifica-tion of the Motor Driven Feedwater Pump flow capacity is not required.

DAVIS-BESSE, UNIT 1 3/4 7- Amendment No.

, 1 l

4 PLANT SYSTEMS ,

BASES I positive reactivity effect's of the Reactor Coolant System cooldown associated with the blowdown, and 2) limit .the yressure rise within containment in the event the steam line rupture occurs within contain-ment. The OPERABILITY of the main steam isolation valves within the closure times of the surveillance requirements are consistent with the assumptions used in the safety analyses. ,

I f 3/4.7.1.6 SECONDARY WATER CHEMISTRY' b

A test program will be'ctnducted during approxivataly the firac 6 months following initial criticality to establish,the appropriate limits on the secondary, water chemistry parameterr. and to determine thf appropriate frequencies for monitoring these parcotters. The results of this test program will be submitted to the Commissiot for review.

The Connission will then issue a' revision to thie spectfication specifying the limits on the parameters and the frequencies for monitoring these parameters. ,

The test program will include an analysisEaf the chemical consticulents of the condenser cooling water.at the point of5'ataku. The analysis shnLil identify the various traces of ions which upon cincentration in the condensate may have the potential for inducement for stress corrosion in the steam generator tubing. The trat program shall also evaluste the efficiency of the water treatment systems in the facility for' removal of such ions and the potential for addition of other ions resulting from the treatment method. The test program shall analyze concentration phenomena and the concentration rates in the steam generator and the secondary water system and shall consider concentration in the recircu-lating cooling water system. -

3/4.7.1.7 MOTOR DRIVEN FEEDWATER PUMP SYSTEM The OPERABILITY of the Motor Driven Feedwater Pump System ensures that the Reactor Cociant: System can be cooled down from normal operating conditions in the event of the total loss of Main Feedwater and Auxiliary Feedwater Pumps.

l The Motor Driven Feedwater Pump flow capability ensures that adequate feedwater flow is available to remove Decay Heat and reduce the Reactnr Coolant System temperature to where the Decay Heat System may be placeu into operation.

When at 40% RATED THERMAL POWER or less and in' MODES 1, 2, er 1, the Motor Driven Feedwater Pump System may be aligned to provide 4 flow peth from the Deaerator Storage Tank through the Motor Driv (a Tsjadester Pump to the Main Feedwater System. During this Motor Drivon'feodtater Pump mode of operation, a flow path from the Condensate Sthrage Tank 6 through ,

the Motor Driven Feedwater Pump to the Auxiliary Feedwater Syste.t shall be maintained with the ability for manual positioning of valven auch that I

I DAVIS-BESSE, UNIT 1 B 3/4 7-3 Amendment No.

4*

PLANT SYSTEMS

. BASES the flow path can be established. The ability for local, manual operation is demonstrated by verifying the presence of the handwheels for all. manual valves and the presence of either handwheels or available power supply for notor operated valves.

3/4.7.2 STEAM GENERATOR PRESSURE / TEMPERATURE LIMITATION The limitation on steam generator pressure and temperature ensures that the prensure induced stresses in the steam gecerators do not exceed the naximun allowable fracture toughness stress limits. The lir.itationsiof'110*F and 237 psig are based on a steam generator RTNDT of 40*F and are sufficient to prevent brittle fracture.

s . ,

1 3/4.7.3 COMPONENT COOLING WATER SYSTEM The OPERABILITY of the component cooling water system ensures that

'. (suffliipnt cooling capacity is available for continued operation of safety ielated equipment during normal and accident conditions. The redundant cooling capacity of this system, assuming a single failure, is consistent with the assumptions used in the safety analyses.

3/4.7.4 SERVICE WATER SYSTEM The OPERABILITY of the service water system ensures that sufficient cooling capacity is available for continued operation of safety related

! equipment during,' normal and accident conditions. The redundant cooling capacity of this system, assuming a single failure, is consistent with j the assumptions used in the safety analysis.

! 3/4.7.5 ULTIMATE HEAT SINK The limitations on the ultimate heat sink level and temperature ensure that sufficient cooling capacity is available to either 1) provide normal cooldown of the facility, or 2) to mitigate the effects of i accident conditions within acceptable limits.

The limitations on minimum water level and maximum temperature are based on providing a 30 day cooling water supply to safety related equipment without exceeding their design basis temperature and is i consistent with the recommendations of Regulatory Guide 1.27, " Ultimate Heat Sink for Nuclear Plants" March 1974.

3/4.7.6 CONTROL ROOM EMERGENCY VENTILATION SYSTEM The 3PERABILITY of the control room emergency ventilation system ensures that 1) the ambient air temperature does not exceed the allowable temperature for continuous duty rating for the equipment and instrumentation cooled by this system and 2) the control room will remain habitable for operations personnel during and following all credible accident conditions. The OPERABILITY of this system in conjunction with control room design provisions is based on ifniting

- the radiation exposure to personnel occupying the control room to 5 rem

( or less whole body, or its equivalent. This limitation is consistent with the requirements of General Design Criterion 19 of Appendix "A",

10 CFR 50.

DAVIS-3FSSE, UNIT 1 B 3/4 7-4 Amendment No.

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