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 ,

l 1314818 Attachment 1 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 ,

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% 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:

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 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)

2. The pilot cell specific gravity, corrected to 770 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( 12, ours. _

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 MILLSTONE - UNIT 2 3/4 8-9 Amendment No.)(g/yf l

'I I

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, APPLICABILITY: MODES 5 and 6. d leas + @O ampen chg capadhj 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 j breaker alignment and indicated power availability.

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

l 1

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

Docket No. 50-336 B14818 I

Attachment 2 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, l tight, free of corrosion and coated with anti-corrosion '

material, and

3. The battery charger will supply at least 400 amperes at a i 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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