ML20065R707

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Proposed Tech Specs Re Electrical Power - Dc Distribution
ML20065R707
Person / Time
Site: Millstone Dominion icon.png
Issue date: 05/06/1994
From:
NORTHEAST NUCLEAR ENERGY CO.
To:
Shared Package
ML20065R706 List:
References
NUDOCS 9405130137
Download: ML20065R707 (8)
v • d • e


Text

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Docket No. 50-336 1314818 Millstone Nuclear Power Station, Unit No. 2 Proposed Revision to Technical Specifications Electrical Power Systems - DC Distribution Marked-up Pages May 1994 9405130137 940506 PDR ADOCK 05000336 P

PDR

% ust 4 -M M ELECTRICAL POWER SYSTEMS D.C. DISTRIBUTION - OPERATING LIMITING CONDITION FOR OPERATION 3.8.2.3 The following D.C. bus trains shall be energized and OPERABLE with at least one tie breaker between bus trains open:

TRAIN "A" consisting of 125-volt D.C. bus 201 A,125-volt D.C.

battery bank 201A andL4e4 capacity %hargee.

4 TRAIN "B" consisting of 125-volt D.C. bus 201B,125-volt D.C.

P'4 O*P battery bank 201B, and % f* R pacitykharger.

APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

With one 125-volt D.C. bus inoperable, restore the inoperable a.

bus to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in COLD SHUTDOWN within the next 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />, b.

With a 125-volt D.C. battery and/or its charger inoperable, restore the inoperable battery and/or charger to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in COLD SHUTDOWN within the next 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.

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SURVEILLANCE REOUIREMENTS 4.8.2.3.1 Each D.C. bus train shall be determined OPERABLE and energized with at least one tie breaker open at least once per 7 days by verifying correct breaker alignment and indicated power availability.

4.8.2.3.2 Each 125-volt battery bank and charger shall be demonstrated OPERABLE:

a.

At least once per 7 days by verifying that:

1.

The electrolyte level of each pilot cell is between the minimum and maximum level indication marks, MILLSTONE - UNIT 2 3/4 8-8 b re w No.

. ~

i J-Mcember 2','l^09 ELECTRICAL POWER SYSTEMS SURVEILLANCE REOUIREMENTS (Continued) 0 2.

The pilot cell specific gravity, corrected to 77 F,

is

- 1.200, 3.

The pilot cell voltage is > 2.08 volts, and 4.

The overall battery voltage is > 125 volts.

b.

At least once per 92 days by verifying that:

1.

The voltage of each connected cell is > 2.08 volts under float charge, and 2.

The specific gravity, corrected to 77 F, of each cell is

_ 1.200.

c.

At least once per 18 months by verifying that:

1.

The cells, cell plates and battery racks show no visual indication of physical damage or deterioration, 2.

The cell-to-cell and terminal connections are clean, tight, free of corrosion and coated with anti-corrosion material, and

~

400 3.

The battery charger will supply a leas amperes at a minimum of 130 volts for at leas M( ours.

12, d.

At least once per 18 months, during shutdown, by verifying that the battery capacity is adequate to supply and maintain in OPERABLE status all of the actual emergency loads for 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> when the battery is subjected to a battery' service test.

e..

At least once per 60 months, during shutdown, by verifying that the battery capacity is at least 80% of the manufacturer's rating when subjected to a performance discharge test.

This performance discharge test may'be performed in lieu of the battery service test.

t No.)(g/y MILLSTONE - UNIT 2 3/4 8-9 Amendment f

l

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JA-August 1, 1073-ELECTRICAL POWER SYSTEMS D.C. DISTRIBUTION - SHUTDOWN LIMITING CONDITION FOR OPERATION 3.8.2.4 As a minimum, the following D.C. electrical equipment and bus shall be energized and OPERABLE:

1

- 125-volt D.C._ bus, and 1

- 125-volt battery bank and chargee supplying the above D.C.

bus, d leas + @O ampen chg capadhj APPLICABILITY: MODES 5 and 6.

ACTION:

With less than the above complement of 0.C. equipment and bus OPERABLE, establish CONTAINMENT INTEGRITY within 8 hcurs.

SURVEILLANCE REQUIREMENTS i

4.8.2.4.1 Tne above required 125-volt D.C. bus shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and indicated power availability.

j 4.8.2.4.2 The above required 125-volt battery bank and charger shall i

be demonstrated OPERABLE per Surveillance Requirement 4.8.2.3.2.

_l l

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MILLSTONE - UNIT 2 3/4 6-10 kmWosmer No.

Docket No. 50-336 B14818 I

Millstone Nuclear Power Station, Unit No. 2 Proposed Revision to Technical Specifications

-)

Electrical Power Systems - DC Distribution i

Retyped Pages May 1994 l-

-- -...i.

-a d

ll ELECTRICAL POWER SYSTEMS l

D.C. DISTRIBUTION - OPERATING LIMITING CONDITION FOR OPERATION 3.8.2.3 The following D.C. bus trains shall be energized and OPERABLE with at least one tie breaker between bus trains open:

j TRAIN "A" consisting of 125-volt D.C. bus 201A,125-volt D.C. battery bank 201A and at least 400 ampere charging capacity.

TRAIN "B" consisting of 125-volt D.C. bus 201B,125-volt D.C. battery bank 201B, and at least 400 ampere charging capacity.

APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

1 a.

With one 125-volt D.C. bus inoperable, restore the inoperable bus to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in COLD SHUTDOWN within the next 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.

b.

With a 125-volt D.C. battery and/or its charger inoperable, restore the inoperable battery and/or charger to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in COLD SHUTDOWN within the next 36-hours.

SURVEILLANCE REQUIREMENTS 4.8.2.3.1 Each D.C. bus train shall be determined OPERABLE and energized with at least one tie breaker open at least once per 7 days by verifying correct breaker alignment and indicated power availability.

4.8.2.3.2 Each 125-volt battery bank and charger shall be demonstrated OPERABLE:

a.

At least once per 7 days by verifying that:

1.

The electrolyte level of each pilot cell is between the minimum and maximum level indication marks, 1

l l

HILLSTONE - UNIT 2 3/4 8-8 Amendment No.

i ou4

)

J

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 2.

The pilot cell specific gravity, corrected to 77'F, is 2 1.200, 3.

The pilot cell voltage is 2 2.08 volts, and 4.

The overall battery voltage is 2 125 volts.

b.

At least once per 92 days by verifying that:

1.

The voltage of each connected cell is 2 2.08 volts under float charge, and 2.

The specific gravity, corrected to 77'F, of each cell is 2 1.200.

c.

At least once per 18 months by verifying that:

1.

The cells, cell plates and battery racks show no visual indication of physical damage or deterioration, 2.

The cell-to-cell and terminal connections are clean, tight, free of corrosion and coated with anti-corrosion material, and 3.

The battery charger will supply at least 400 amperes at a minimum of 130 volts for at least 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

d.

At least once per 18 months, during shutdown, by verifying that the battery capacity is adequate to supply and maintain in OPERABLE status all of the actual emergency loads for 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> when the battery is subjected to a battery service test.

e.

At least once per 60 months, during shutdown, by verifying that the battery capacity is at least 80% of the manufacturer's rating when subjected to a performance discharge test. This performance discharge test may be performed in lieu of the battery service test.

HILLSTONE - UNIT 2 3/4 8-9 Amendment No. J9p, 0124

ELECTRICAL POWER SYSTEMS p.C. DISTRIBUTION - SHUTDOWN LIMITING CONDITION FOR OPERATION 3.8.2.4 As a minimum, the following D.C. electrical equipment and bus shall be energized and OPERABLE:

1-125-volt D.C. bus, and 1-125-volt battery bank and at least 400 ampere charging capacity supplying the above D.C. bus.

APPLICABILITY:

MODES 5 and 6.

ACTION:

With less than the above complement of D.C. equipment and bus OPERABLE, establish CONTAINMENT INTEGRITY within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

SURVEILLANCE REQUIREMENTS 4.8.2.4.1 The above required 125-volt D.C. bus shall be determined OPERABLE and energized at least once per 7 days by verifying correct breaker alignment and indicated power availability.

4.8.2.4.2 The above required 125-volt battery bank and charger shall be demonstrated OPERABLE per Surveillance Requirement 4.8.2.3.2.

MILLSTONE - UNIT 2 3/4 8-10 Amendment No.

0124 t..

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