Text

Amends 94 & 94 to Licenses NPF-72 & NPF-77,respectively, Revising TS to Support Replacement of 125 Volt Direct Current At&T Batteries W/New Charter Power Sys,Inc (C&D) Batteries
	ML20237D447
Person / Time
Site:	Braidwood
Issue date:	08/18/1998
From:	Stewart Bailey; NRC (Affiliation Not Assigned)
To:	;
Shared Package
ML20237D449	List: ML20237D447; ML20237D453;
References
	NUDOCS 9808260192
	Download: ML20237D447 (11)
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UNITED STATES p

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NUCLEAR REGULATORY COMMISSION o

WASHINGTON. D.C. 2006H1001

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COMMONWEALTH EDISON COMPANY DOCKET NO. STN 50-456 BRAIDWOOD STATION. UNIT NO.1 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 94 License No. NPF-72 1.

The Nuclear Regulatory Commission (the Commission) has found that:

A.

The application for amendment by Commonwealth Edison Company (the licensee) dated January 14,1998, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act) and the Commission's rules and regulations set forth in 10 CFR Chapter I; B.

The facility will operate in conformity with the application, the provisions of the Act, and the rules and regulations of the Commission; C.

There is reasonable assurance (i) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted in compliance with the Commission's regulations; D.

The issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public; and E.

The issuance of this amendment is in accordance with 10 CFR Par 151 of the Commission's regulations and all applicable requirements have been satisfied.

2.

Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment, and paragraph 2.C.(2) of Facility Operating License No NPF-72 is hereby amended to read as follows:

i 9808260192 980818 DR ADOCK 05000456 p

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2 (2) Technical Specifications The Technical Specifications contained in Appendix A as revised through Amendment No. 94 and the Environmental Protection Plan contained in Appendix B, both of which are attached hereto, are hereby incorporated into this license. The licensee shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan.

3.

This license amendment is effective as of the date of its issuance and shall be implemented within 30 days.

FOR THE NUCLEAR REGULATORY COMMISSION Stewart N. Bailey, Pr

Ma ger Project Directora?.e 1 -

Division of Reactor Projects - lil/IV Office of Nuclear Reactor Regulation

Attachment:

Changes to the Technical Specifications Date of issuance: August 18, 1998 l

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ll UNITED STATES p

S NUCLEAR REGULATORY COMMISSION E

I WASHINGTON, D.C. 30seH001

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COMMONWEALTH EDISON COMPANY DOCKET NO. STN 50-457 BRAIDWOOD STATION. UNIT NO 2 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 94 License No. NPF-77 1.

The Nuclear Regulatory Commission (the Commission) has found that:

A.

The application for amendment by Commonwealth Edison Company (the licensee) dated January 14,1998, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act) and the Commission's rules and regulations set forth in 10 CFR Chapter I; B.

The facility will operate in conformity with the application, the provisions of the Act, and the rules and regulations of the Commission; C.

There is reasonable assurance (i) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) j that such activities will be conducted in compliance with the Commission's j

regulations; 1

D.

The issuance of this amendment will not be inimical to the common defense and i

security or to the health and safety of the public; and

)

E.

The issuance of this amendment is in accordance with 10 CFR Part 51 of the Commission's regulations and all applicable requirements have been satisfied.

I 2.

Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment, and paragraph 2.C.(2) of Facility Operating License No. NPF-77 is hereby amended to read as follows:

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2-(2)

Technical Specifications The Technical Specifications contained in Appendix A as revised through Amendment No. 94 and the Environmental Protection Plan contained in Appendix B, both of which were attached to License No. NPF-72, dated July 2, 1987, are hereby incorporated into this license. The licensee shall operate the facility in accordance with the Technical Specifications and the Environmental l

Protection Plan.

3.

This license amendment is effective as of the date ifits issuance and shall be implemented within 30 days.

FOR THE NUCLEAR REGULATORY COMMISSION i

Stewart N. Bailey, Proj tM r

Project Directorate Ill-2 Division of Reactor Projects - lil/IV Office of Nuclear Reactor Regulation

Attachment:

Changes to the Technical Specifications Date of issuance: August 18, 1998 l

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ELECTRICAL POWER SYSTEMS 3/4.8.2 D.C. SOURCES OPERATING LIMITING CONDITION FOR OPERATION 3.8.2.1 As a minimum the following D.C. electrical sources shall be OPERABLE:

a.

125-Volt D.C. Bus 111 fed from Battery 111 for Unit 1 (Bus 211 fed from Battery 211 for Unit i

2) and its associated full capacity charger, and with one of its associated crosstie breakers in the open position, and b.

125-Volt D.C. Bus 112 fed from Battery 112 for Unit 1 (Bus 212 fed from Battery 212 for Unit

2) and its associated full capacity charger, and with one of its associated crosstie breakers i

in the open position.

APPLICABILITY: MODES 1,2, 3, and 4.

ACTION:

a.

With one of the required 125-Volt D.C. buses inoperable due to its normal associated full capacity charger being inoperable, operations may continue provided that within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months the inoperable bus and its associated battery are energized by the opposite unit's 125-Volt D.C.

bus and its OPERABLE charger via the crosstie breakers and that within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months the inoperable bus and its charger are restored to OPERABLE status. Otherwise be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

b.

With both of the crosstie breakers closed for a 125-Volt D.C. bus that is required to be OPERABLE and with both units operating (Modes 1,2,3, or 4), the 125-Volt D.C. bus may energize the opposite unit's inoperable 125-Volt D.C. bus having an inoperable charger without a load restriction.

c.

With both of the crosstie breakers closed for a 125-Volt D.C. bus that is required to be OPERABLE and with the opposite unit shutdown (ded items 1 and 2 below are satisfied.

Modes 5,6, or defueled), the crosstie breakers may remain closed for up to 7 days provi Otherwise open one of the crosstie breakers.

(1)

The shutdown unit's bus load is restricted to:

Shutdown Unit Operating Unit Load Batterv Status Batterv Tvoe Restriction noperable AT&T 100 Amps Inoperable C&D 200 Amps l

OPERABLE Either None (2)

If a load restriction applies, then once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months verify that the shutdown unit's bus loading will not exceed the load restriction.

d.

With one of the required 125 Volt D.C. buses inoperable, except for the allowances of l

ACTIONS (a), (b), or (c) above, restore the inoperable bus to OPERABLE status within 2 l

hours or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

SURVEILLANCE REQUIREMENTS 4.8.2.1.1 Each D.C. bus shall be determined OPERABLE and energized from its battery at least j

once per 7 days by verifying correct breaker alignment.

l BRAIDWOOD-UNITS 1 & 2 3/4 8-10 AMENDMENT NO. 94

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 4.8.2.1.2 Each 125-volt battery bank and its associated charger shall be demonstrated OPERABLE:

a.

At least once per 7 days by verifying that:

1)

The parameters in Table 4.8-2 meet the Category A limits, and 2)

The total battery terminal voltage is greater than or equal to 130.5 volts (AT&T) 127.6 volts (C & D) on float charge.

l b.

At least once per 92 days and within 7 days after a batte disch'arge with battery terminal voltage below 110 volts, or battery overcharge th battery terminal voltage

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above 145 volts, by verifying that:

1 1)

The parameters in Table 4.8-2 rneet the Category B limits, 2)

There is no visible corrosion at either terminals or connectors, or the connection resistance of these items is less than 4

150 x 10 ohm *, and 3)

The average electrolyte temperature of all connected cells is above 60*F.

c.

At least once per 16 months by verifying that:

1)

The cells, cell plates, and battery racks show no visual indication of physical

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damage or abnormal deterioration,

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2)

The cell-to-cell and terminal connections are clean, tight, and coated with anticorrosion material, 3)

The resistance of each cell-to-cell and terminal connectio'n is less than or equal 4

to 150 x 10 ohm *, and 4)

The battery charger will supply a load equal to the manufacturer's rating for at least 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months .

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 or s,imulated i

emergency loads for the design duty cycle when the battery is subject to a battery

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service test; l

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Obtained by subtracting the normal resistance of: 1) the cross room rack connector (C & D only:

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400 x 10 ohm, typical) and 2) the bi-level rack connector (both AT&T and C & D: 50 x 10 ohm, typical); from the measured cell-to-cell connection resistance.

l BRAIDWOOD - UNITS 1 & 2 3/4 6-11 AMENDMENT NO. 94 l

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) e.

At least once per 60 months, during shutdown, by verifying that the battery capacity is i

at least 95% (AT&T) 80% (C & D) of the manufacturer's rating when subjected to a p

i performance discharge test or a modified performance discharge test. The modified 4

performance discharge test and the performance discharge test may be performed in l

l h,eu of the battery service test required by Specification 4.8.2.1.2d.;

f.

At least once per 12 months

during shutdown, by giving performance discharge tests or modified performance discharge tests of battery capacity to any battery that shows signs of degradation or has reached 85% of the service life expected for the application. Degradation is indicated when the battery capacity drops more than 5% (AT&T) 10% (C & D) of rated capacity from its capacity on the previous l

performance test o modified performance test, or is below 100% (AT&T) 90%

(C & D) of the manufacturer's rating.

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Testing at a 2 year interval is acceptable as long as the battery capacity is greater than 100% of

_ rated capacity and the battery shows no signs of degradation.

BRAIDWOOD-UNITS 1 & 2 3/4 8-11 a AMENDMENT NO. 94 1

TA_BLE 4.8-2 (C & D)

BATTERY SURVEILLANCE REQUIREMENTS l

CATEGORY AN CATEGORY BS PARAMETER LIMITS FOR EACH LIMITS FOR cACH ALLOWABLE

l DESIGNATED PILOT CONNECTED CELL VALUE FOR EACH

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CELL CONNECTED CELL j

Electrolyte

> Minimum level

> Minimum level Above top of Level indication mark, indication mark,

plates, and < %" above and < %" above and not maximum level maximum level overflowing indication mark indication mark Float Volteys 12.13 volts t 2.13 volts *

> 2.07 volts Not more than 0.020 below I

the average of all connected Specific

> 1,195 cells W

Gravity A 1.200*

Average of all Average of all connected cells connected cells

> 1.205 1 1.195*

TABLE NOTATIONS l

(1) For any Category A parameter (s) outside the limit (s) shown, the battery may be considered OPERABLE prov,ded that within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months all the Category B measurements are taken and i

found to be within their allowable values, and provided all Category A and B pararneter(s) are restored to within limits within the next 6 days.

(2) OPERABLE prov,ded that the Category B parameters are within their allowable values an i

provided the Category B parameter (s) are restored to within limits within 7 days.

l (3) Any Category B parameter not within its allowable value indicates an inoperable battery.

I4) Corrected for electrolyte temperature.

(5) Or battery charging current is less than 3 amps when on charge.

(6) Corrected for average electrolyte temperature.

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l BRAIDWOOD-UNITS 1 & 2 3/4 8-12a AMENDMENT NO. 94

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ELECTRICAL POWER SYSTEMS D C. SOURCES SHUTDOWN LIMITING CONDITION FOR OPERATION j

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3.8.2.2 As a minimum, one 125-volt D.C. bus fed from its battery and its associated full-capacity charger and with one of its associated crosstie breakers in the open position shall be OPERABLE.

APPLICABILITY: MODES 5 and 6.

ACTION:

)

a.

With.both of the crossile breakers closed for the 125 Volt D.C. bus that is required to be OPERABLE and with the opposite unit operating (Modes 1,2,3, or 4), the shutdown unit's operable 125-Volt D.C. bus may energize the operating unit's inoperable 125-Volt D.C. bus having an inoperable charger without a load restriction.

b.

With both of the crosstie breakers closed for the 125-Volt D.C. bus that is required to be OPERABLE and with both units shutdown (Modes 5,6, or defueled), the 125-Volt D.C. bus may energize the opposite unit's 125-Volt D.C. bus for up to 7 days provided items 1 and 2 below are satisfied. Otherwise open one of the crosstie breakers.

(1)

The opposite unit's bus load is restricted to:

Opposite Bus Operable Bus Loao Battery Status Battery Tvoe Restrictica inoperable AT&T 100 Amps inoperable C&D 200 Amps OPERABLE Either None (2)

If a load restriction applies, then once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months verify that the opposite shutdown unit's bus loading will not exceed the load restriction.

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c.

With the required 125-Volt D.C. bus inoperable, except for the allowances of ACTIONS (a) l or (b) above, immediately suspend all operations involving CORE ALTERATIONS, positive I

reactivity additions, or movement of irradiated fuel; initiate corrective action to restore the required bus to OPERABLE status as soon as possible; and within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , depressurize and vent the Reactor Coolant System through at least a 2 square inch vent.

SURVEILLANCE REQUIREMENTS 4.8.2.2 The above required 125-volt D.C. bus fed from its battery and its associated charger shall be demonstrated OPERABLE per Specifications 4.8.2.1.1 and 4.8.2.1.2.

l BRAIDWOOD - UNITS 1 & 2 3/4 6-13 AMENDMENT NO. 94

ELECTRIC POWER SYSTEMS BASES A.C. SOURCES. D.C. SOURCES. ANC',,qiplTE POWER DISTRIBUTION (Continued)

The Surveillance Requirement for demonstrating the OPERABILITY of the station batteries is based on the recommendations of Regulatory Guide 1.129," Maintenance Testing and Replacement of Large Lead Storage Batteries for Nuclear Power Plants," February 1978, and IEEE Std 450-1980,,,IEEE Recommended Practice for Maintenance, Testing, and Replacement of

' Large Lead Storage Batteries for Generating Stations end Substations."

The modified performance discharge test is described in IEEE Std 450-1995, "lEEE l

d Recommended Practice for Maintenance, Testing and Replacement of Vented Lead-Acid Batteries for Stationary Applications." It is permissible to perform a modified performance discharge test on the battery in lieu of a service test and a performance discharge test as required l

. by Regulatory Guide'1.129, Regulatory l osition C.1, because the test discharge rate envelopes the load cycle of the service test.

Verification of the crosstie loading limits in Specifications 3.8.2.1 and 3.8.2.2 ensures that the OPERABLE battery will have sufficient capacity to energize the design basis loads of its DC bus while maintaining the limited DC loads of the inoperable DC bus on a shutdown unit.

Verifying average electrolyte temperature above the minimum for which the battery was sized, total battery terminal voltage on float charge, and the performance of battery service and discharge tests ensures the effectiveness of the charging system, the ability to handle high discharge rates and compares the battery capacity at that time with the rated capacity.

The battery service test is a special test of battery capability, as-found, to satisfy the design requirements (battery duty cycle) of the D.C. electrical power system. The discharge rate and length of the battery service test corresponds to the design duty cycle requirements as specified in UFSAR Subsection 8.3.2.1.1.

Table 4.8-2 specifies the normal limits for each designated pilot cell and each connected cell for electrolyte level, float voltage and specific gravity. The limits for the designated pilot cells i

j float voltage and specific gravity, greater than 2.18 volts (AT&T) 2.13 volts (C & D) and 0.015 l

below the manufacturers full charge specific gravity or a battery charger current that had stabilized at a low value, is characteristic of a charged cell with adequate capacity. The normal limits for each connected cell for float voltage and specific gravity, greater than 2.18 volts (AT&T) 2.13 volts (C & D) and not more than 0.020 below the manufacturers full charge specific gravity l

with an average specific gravity of all the connected cells not more than 0.010 Delow the manufacturers full charge specific gravity, ensures the OPERABILITY and capability of the battery.

Operation with a battery cell's parameter outside the normal limit but within the allowable value specified in Table 4.8-2 is permitted for up to 7 days. During this 7-day period: (1) the allowable values for electrolyte level ensures no physical damage to the plates with an adequate electron transfer capability; (2) the allowable value for the average specific gravity of all the cells, not more than 0.020 below the manufacturers recommended full charge specific ravity, ensures that the decrease in rating will be less than the safety margin provided in sizing; ( the allowable value for an individual cell's specific gravity, ensures that an individual cell's spect e gravity will not be more than 0.040 below the manufacturers full charge specific gravity and that the overall capability of the battery will be maintained within an acceptable limit; and (4) the allowable value for an individual cell's float voltage, greater than 2.14 volts (AT&T) 2.07 volts (C & D), ensures the l

battery's capability to perform its design function.

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I BRAIDWOOD-UNITS 1 & 2 B 3/4 8-2 AMENDMENT NO. 94

ATTACHMENT TO LICENSE AMENDMENT NOS. 94 AND 94 E6.Q1LITY OPERATING LICENSE NOS. NPF-72 AND NPF-77 DOCKET NOS. STN 50-456 AND STN 50-457 l

Replace the following pages of the Appendix "A" Technical Specifications with the attached pages. The revised pages are identified by amendment number and contain vertical lines indicating the area of change.

Remove Paoes insert Paoes 3/4 8-10 3/4 8-10 3/4 8-11 3/4 8-11 3/4 8-11a 3/4 8-11a 3/4 8-12a 3/4 8-12a 3/4 8-13 3/4 8-13 8 3/4 8-2 B 3/4 8-2

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ML20237D447

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