ML20150F525
| ML20150F525 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 03/25/1988 |
| From: | Berkow H Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20150F529 | List: |
| References | |
| NUDOCS 8804050254 | |
| Download: ML20150F525 (21) | |
Text
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[po neo u
o UNITED STATES l'
NUCLE AR REGULATORY COMMISSION W ASHING TON, D. C. 20666
%,..... f VIPGINTA ELECTRIC AFD POWFP COMPANY OLO DOMINION FLECTRTC COOPERATIVE DOCKET NO. 50-118 00RTu ANNA POWER STATION,itNIT NO. 1 AMENDMENT TO FACILITY OPERATING l! CENSE Amendment No. 97 License No. NPF-4 1.
The Nuclear Regulatory Comission (the Comission) has found that A.
The application for amendment by Virginia Electric and Poer Company et al., (the licensee) dated September 22, 1987, c3mplies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Cemission's rules and regulations set forth in 10 CFR Chapter I; R.
The facility will operate in confomity with the application, the provisions of tha Act, and the rules and regulations of the Comission; C.
There is reasonable assurance (i) that the activities autnorized by this armnMent can be conducted without endangering the health and safetv of the public, and fii) that such activities will be conducted in compliance with the Comission's regulationst D.
The issuance of this amen &ent wili not be inimical to the comen 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 Part 51 of the Comissien's regulations and all applicable requirements have been satisfied.
8804050254 880325 PDR ADOCK 05000330
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4,
2.
Accordingly, the license is amended by changes to the Technical Speci-fications as indicated in the attachment to this license anendment, and paragraph 2.0 (?) of F scility Operating License No. NPF-4 is hereby amended to read as follows:
1 (2) Technical Specificati g The Technical Specifications contained in Appendices A and B, as revised threugh Anendrent No. 97
. are hereby incorporated in the license.
The licensee shall operate the facility in accordance with the lechnical Specifications.
3.
This license amendment is effective within 14 days of the date of its issuence.
FOR E NUCLEAR REGULATORY COMMISSION Herbert N. Berkow, Director Project Directorate 11-2 Division of Reactor Projects-1/11 Office of Nuclear Reactor Regulation
Attachment:
Changes to.the Technical Specifications Date of Issuance:
March 25,1113 I
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I ATTACHPENT TO LICENSE AMENDWENT NO. 97
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TO FACILITY OPFDATING LICENSE NO. NPF-4 j
DOCrFT N0. 50-338 f
i Peplace the following paces o' the Arpendix "A" Technical Srecifications j
with the enclosed pages as indicated.
The revised pages are identified hv i
4 amendment number and contain vertical lires indicatina the area of chance, i
The corresponding overleaf pages are also provided to maintain document completeness, i
l Page i
3/4 8-4 3/4 8-8 f
1 3/4 8-9 j
3/4 8-9a 3/4 8-10*
R 3/4 8-1 i
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- This page was previously the overleaf for page 3/4 8 9.
However, new page 3/4 8-9a is new the overleaf for peoe 3/4 P-9.
Therefore, a copy I
j of page 3/4 8-10 is included only to maintain document completeness, i
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ELECTRICAL POWER SYSTEMS SURVEllt.ANCE REQUIREMENTS 4.8.1.1.3 Each diesel generator 125-volt battery bank and charger shall be demonstrated OPERABLE:
a.
At least once per 7 days by verifying that:
1.
The parameters in Table 4.8-3 meet Category A limits and i
i 2.
The total bsttery terminal voltage is greater than or equal to 129 volts on : float charge.
i b.
At least once per 92 days and within 7 days after a battery discharge j
where the battery terminal voltage decreased below 110 volts or battery overcharge above 150 volts, by verifying that:
j l
1.
The parameters in Table 4.8-3 meet Category B limits and i
2.
There is no visible corrosion at either terminals or connectors, or the connection resistance of these items is less than 150 x 10 to the minus 6 ohms.
c.
At least once per 18 months, by verifying that:
1 1.
The cells, cell plates and hattery racks show no visual irdication of physical damage or abnonnel deterioration.
2.
The cell-to-cell and terminal connections are clean, tight and coated with anti corrosion material.
3.
The resistance of each cell-to-cell and termi connection is less than or equal to 150 x 10 0alohms.
4 The battery charger will supply at least 10 amperes at 125 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
l d.
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, i
e.
At letst once per 18 months, during shutdown, perform a performance discharge test of battery capacity if the battery shows signs of degradation or has reached 85% of its service life expected for the application.
Degradation is indicated when the t,attery capacity l
drops more than 10% of rated capacity from its average from previous j
performance discharge tests, or is below 90% of the manufacturer's
- rating, i
)
NORTH ANNA - UNIT 1 3/4 8-4 Amendment No. 83, 97 1
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1 4
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ELECTRICAL POWER SYSTEMS I
A.C. O!$TRIBUT!0N - SHUTDOWN 1
LIMIT!M CONDITION FOR OPERATION I
i 3.8.2.2 As a minimum, the following A.C. electrical busses shall be OPERABLE.
l 1 - 4160 volt Emergency Eus, (IH or IJ) 1 - 480 volt Emergency Bus, (1H,1111) or (1J, IJ1) l 2 - 120 volt A.C. Vital Busses (1-I,1-!!) or (1-!!!, I-IV)
APPLICABILITY: MODES 5 and 6.
I ACTION:
With less than the above complement of A.C. busses 0FERA8LE and energized, establish CONTAINMENT INTEGRITY within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, s
t I
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i I
SURVEILLANCE REQUIRIMENTS j
8 4.8.2.2 The specified A.C. busses shall be detemined OPERABLE at least once per 7 days by verifying correct breaker alignment and
]
indicated power availability.
4 1
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i 3/4 8-7 NORTH ANNA - UNIT 1
1 ELECTRICAL POWER SYSTEMS 0.C. DISTRIBUTION - OPERATING LIMITING CONDITION FOR OPERATION 3.8.2.3 The following 0.C. bus trains shall be energized and OPERABLE with tie breakers between bus trains open:
TRAIN "A" consisting of 125-volt 0.C. bus No.1-1 and 1-II,125-volt 0.C battery bank No. I-I and 1-II and a full capacity charger.
TRAIN "B" consisting of 125-volt 0.C. bus No.1-III and 1-IV,125-volt 0.C. battery bank No.1-III and 1-IV and a full capacity charger.
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 at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
b.
With one 125-volt D.C. battery and/or its charger inoperable, restore the inoperab'- battery and/or charger to GPERABLE 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 at least HOT STAND 8Y within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
SURVEII. LANCE REQUIREMENTS 4.8.2.3.1 Each D.C. bus train shall be detemined OPERABLE and energized with tie breakers 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:
l.
The parameters in Table 4.8-3 meet Category A limits and 2.
The total battery terminal voltage is greater than or equal to 129 volts on float charge.
NORTH ANNA - UNIT 1 3/4 8-8 Arw@nt No. 97
ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) b.
At least once per 92 days and within 7 days after a battery discharge where the battery terminal voltage went ' clou 11^ volts or battery overcharge above 150 volts, by verifying that:
1.
The parameters in Table 4.8-3 meet the Category B limits, 2.
There is no visible corrosion at either terminals or i
connectors, or the connection resistance of these items is less than 150 x 10 to :M minus 6 ohms, and 3.
Average electrolyte temperature of at least 10 connected cells is above 60*F.
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 abnormal deterioation.
2.
The cell-to-cell and terminal connections are clean, tight and coated with anti-corrosion material.
3.
The battery charger will supply at least 200 amperes at 125 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
4 The resistance of each cell-to-cell and terminal connection is less than or equal to 150 x 10-6 ohms, 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 simulated emergency loads for the design duty cycle when the battery is subject 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 ratin1 when subjected to a performance discharge test. Once per 60 month interval, this performance discharge test may be performed in place of the battery service test.
f.
At least once per 18 months, during shutdown, perform a performance discharge test of battery capacity if the battery shows signs of degradation or has reached 85% of its service life expected for the application. Degradation is indicated when the battery capacity drops more than 10% of rated capacity from its average from previous performance discharge tests, or. is below 90% of the manufacturer's rating.
NORTH ANNA - UNIT 1 3/4 8-9 Amendment No. 97
HBLE4.8-3 l
BATTERY SURVEILLANCE REQUIREMENTS CATEGORY A(I)
CATEGORY B(2)
Parameter Limits for each Limits for each Allowable (3) designated pilot connected cell value for each cell connected cell Electrolyte
> Minimum level
> Minimum level Above top of Level indication mark, indication mark, plates, and and < 1/4" above and < 1/4" above not over-max 1Eum level maxiEum level flowing indication mark indication mark Float Voltage
> 2.13 vel ts
> 2.13 volts (c)
> 2,07 volts Specific (a)
> 1.200(b)
> 1.195 Not more than Gravity
.020 below the average of all connected cells Average of all Average of all connected cells connectg) cells
> 1.205
> 1.195 (a) Corrected for electrolyte temperature and level, (b) Or battery charging current is less thar. (12) amps when on charge (station batteries only).
(c)
For any cell with voltage below the limit and electrolyte temperature
> 3*F frcm the average electrolyte temperature, correct the cell voltage for average electrolyte temperature.
(1)
For any Category A parameter (s) outside the limit (s) shown, the battery may be considered OPERABLE provided that within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> all the Category B measurements are taken and found to be within their allowable values, and provided all Category A and B parameter (s) are restored to within limits within the next 6 days.
(2) For any Category B parameter (s) outside the 1imit(s) shown, the battery may be considered OPERABLE provided that the Category B parameters are within their allowable values and provided the Category S parameter (s) are restored to within Itdits within 7 days.
(3) Any Category B parameter not within its allowable value indicates an inoperable battery.
NORTH ANNA - UNIT 1 3/4 8-9a Amendment No.97 m
ELECTRICAL POWER SYSTEMS D.C.
DISTRIBUTION - SHUTDOWN LIMITING CONDITION FOR OPERATION 3.8.2.4 As a minimum, the following 0.C. electrical equipment and bus shall be energized and OPERABLE:
2 - 125-volt 0.C. busses,1-I or 1-III and 1-II or 1-IV 2 - 125-volt battery bank and charger associated with the above D.C. busses.
APPLICABILITY: MODES 5 and 6.
ACTION:
With less than the above complement of 0.C. equipment and bus OPERABLE, establish CONTAINMENT INTEGRITY within 8 Hours.
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.
NORTH ANNA - UNIT 1 3/4 8-10
3/4.8 ELECTRICAL POWER SYSTEMS BASES 3/4.8.1 and 3/4.8.2 A.C. and D.C. POWER SOURCES AND DISTRIBUTION The OPERABILITY of the A.C. and D.C power sources and associated distribution systems during operation ensures that sufficient power will be available t5 supply the safety related equipment required for 1) the safe shutdown of the facility and 2) the mitigation and control of accident conditions within the facility.
The minimum specified indepen-dent and redundant A.C. and D.C. power sources and distribution systems satisfy the requirements of General Design Criteria 17 of Appendix "A" to 10 CFR 50.
The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation comensurate with the level of degradation. The OPERABILITY of the power sources are consistent with the initial condition assumptions cf the accident analyses and are based upon maintaining at least one of each of the onsite A.C. and D.C. power sources and associated distri-bution systems GPERABLE during accident conditions coincident with an 4
assumed loss of offsite power and single failure of the other onsite A.C. source.
The OPERABILITY of the minimum specified A.C. and D.C. power sources and associated distribution systems during shutdown and re-fueling ensures that 1) the facility can be maintained in the shutdown or refueling condition for extended time periods and 2) sufficient instrumentation and control capability is available for monitoring and maintaining the facility status.
The Surveillance Requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the rer.nmendations of Regulatory Guides 1.9 "Selection of Diesel Generator Set Capacity for Standby Power Supplies," March 10,1971, and 1.108 "Periodic Testing of Diesel Generator Units Used as Onstte Electric Power Systems at Nuclear Power Plants" Revision 1, August 1977, as modified by Amendment No. 83 issued August 22, 1986.
The Surveillance Requirements for demonstrating the OPERABILITY of the Emergency Diesel Generator batteries and the Station batteries are based on the recomendations 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 Recomended Practice for Maintenance Testing, and Replacement of Large Lead Storage Batteries for Generating Stations and Substations, as modified by Amendment No. 97 issued March 25, 1988.
NORTH ANNA - UNIT 1 B 3/4 8-1 Amendment No. AB, g
go ctog'o 8
UNITED STATES
',0, NUCLEAR REGULATORY COMMISSION
{,
WASHINGTON, D. C. 20555
/
VIPGINIA ELECTRIC AND POWER COMPANY OLD DOMINION ELFCTRIC COOPERATIVE l
DOCKET NO. 50-339
~
1 NORTH ANNA POWFP STATION, UNIT NO. ?
AMENDMFNT To FACILITY OPERATING LICENSE i
Amendnent No. 34 License No. NPF-7 J
1.
The Nuclear Peculatory Comission (the Commission) has found that:
A.
The application for amendment by Virginia Electric and Power Company, et al., (the licensee) dated September ??, 1987, complies with the j
standards and reouirements of the Atomic Energy Act of 1054, as amended (the Act), and thA Commission's rules anti regulations set i
forth in 10 CFR Chapter I:
B.
The facility will operate in conformity with the application, the orovisions of the Act, and the rules and regulations of the Comission; r.
There is reasonable assurance (i) that the activities authorized bv this amendment can be conducted without endangering the health a'nd safety of the public, and (ii) that such activities will he conducted in compliance with the Commission's regulations; P.
The issuance of this amendment will not be ininical to the common defense and security or to the health and sa'ety 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 amerded by chances to the Technical Speci-fications as indicated in the attachment to this license amendment, and paragraph 2.C.(?) of Facility Operatino Iicense No. NPF-7 is hereby ariended tn read as follows:
(2) Technical Specifications The Technical Specifications contained in Appendices A and C, as revised through Amendment Nn, 84
, are hereby incorporated in the license.
The licensee shall operate the facility in accordance with the Technical Specifications.
3.
This license amendment is effective within 14 days of the date of its issuance.
FOR THE NUCLEAR REGULATORY COMMISSION Herbert N. Berkow, Director Project Directorate II-2 Division of Reactor Projects-1/II Office of Nuclear Reactor Regulation
Attachment:
Changes to the Technical Specifications Date of Issuance:
March 25, 1988
i o
ATTACHMFNT TO LICENSE AMENDMFNT NO. 84 i
TO FACILITY OPERATING LICENSE NO. NPF-7 00CKET NO. 50-339
)
Replace the following pages of the Appendix "A" Technical Specifications with the enclosed pages as indicated. The revised pagee are identified by amendment nunber and contain vertical lines indicating the area of change.
The corresponding overleaf pages are also provided to maintain document completeness.
Page l
3/4 8-6 3/4 8-6a 3/4 8 13 3/4 8-14 3/4 8-14a i
83/d 8-1 l
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j ELECTRICAL POWER SYSTEMS l
SURVEILLANCE REQUIREMENTS 4.8.1.1.2 (Continued)
Verify)ing that on an ESF actuation test signal (without loss of 5.
power tne diesel generator starts ** on the auto-start signal I
and operates on standby for greater than or equal to 5 minutes.
6.
Simulating a loss of offsite power in conjunction with an ESF actuation test signal, and a) Verifying de-energization of the emergency busses and load shedding from the emergency buspes.
i b) Verifying the diesel starts ** on the auto-start signal, i
energizes the emergency busfes with pennanently connected loads within 10 seconds, energizes the auto-connected emergency (accident) loads through the sequencing timers and operates for greater than or equal to 5 minutes and maintains the steady state voltage and frequency at 4160 1 420 volts and 60 1 1.2 Hz.
c) Verifying that all diesel generator trips, except engine overspeed, generator differential and breaker overcurrent i
are automatically bypassed upon loss of voltage on the emergency bus and/or a safety injection actuation signal.
7.
Verifying the diesel generator operates ** for at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
I During the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of this test, the diesel generator shall be loaded to an indicated target value of 2950 kW (between 2900-3000 kW)*** and during the remaining 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> of this test, the diesel generator shall be loaded to an indicated 2500-2600 kW***.
Within 5 minutes after completing this 24-hour test, perform Surveillance Requirement 4.8.1.1.2.d.4.
8.
Verifying that the auto-connected loads to each diesel generator do not exceed the 2000 hour0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> rating of 3000 kW.
9.
Verifying the diesel generator's capability to:
a) Synchronize with the offsite power source while the generator is loaded with its emergency loads upon a simulated restora-tion of offsite power.
b) Transfer its loads to the offsite power source, and c) Proceed through its shutdown sequence.
- This test shall be conducted in accordance with the manufacturer's reconinen-dations regarding engine prelube and warmup procedures, and as applicable regarding loading recomendations.
- This band is meant as guidance to avoid routine overloading of the engine.
Loads in excess of this band for special testing under direct monitoring of the manufacturer or momentary variations due to changing bus loads shall not invalidate the test.
NORTH ANNA - UNIT 2 3/4 8-5 Amendment No. 42, 48
ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS 4.8.1.1.2 (Continued)
- 10. Verifying that the following diesel generator lockout features prevent diesel generator starting only cen reauired:
a) Remote local Selection Switch b) Emergency stop Switch e.
At least once per 10 years or after any modifications which could affect diesel generator interdependence by starting ** both diesel generators simultaneously, during shutdown, and verifying that both diesel generators accelerate to at least 900 rpm in less than or equal to 10 seconds.
4.8.1.1.3 Each diesel generator 125-volt battery bank and charger shall be denonstrated OPERABLE:
a.
At least once per 7 days by verifying that:
1.
The parameters in Table 4.8-3 meet Category A limits and 2.
The total battery terminal voltage is > 129 volts on a float
- charge, b.
At least once per 92 days and within 7 days after a battery discharge where the battery terminal voltage dec reased below 110 volts or battery overcharge above 150 volts, by verifying that:
l.
The parameters in Table 4.8-3 meet Category B limits and i
2.
There is no visible corrosion at either terminals or connectors, or the connection resistance of these items is less than 150 x 10 to the minus 6 ohms.
i
- This test shall be conducted in accordance with the manufacturer's recommendations regarding engine prelube and warmup procedures, and as applicable regarding loading recontendations.
NORTH ANNA - UNIT 2 3/4 8-6 Amendment No. AS, 84 l
I ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS 4.8.1.1.3 (Continued) 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 abnormal deterioration.
2.
The cell-to-cell and terminal connections are clean, tight and coated with anti-corrosion material.
3.
The resistance of each cell-to-gell and terminal connection is less than or equal to 150 x 10-o ohms.
4.
The battery charger will supply at least ten amperes at 125 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
)
d.
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.
e.
At least once per 18 months, during shutdown, perform a performance discharge test of battery capacity if the battery shows signs of j
degradation or has reached 85% of its service. life expected for the application. Degradation is indicated when the battery capacity drops more than 10% of rated capacity from its average from previous performance discharge tests, or is below 90% of the manufacturer's rating.
g NORTH ANNA - UNIT 2 3/4 8-6a AmendmentNo.47,$,8'4
i ELECTRICAL POWER SYSTEN5 D.C. DISTRIBUTION - OPERATING LINITING CONDITION FOR OPERATION 3.8.2.3 The following 0.C. bus trains shall be energized and OPERA 8LE:
TRAIN "A" consisting of 125-volt D.C. bus No. 2-I and 2-II,125-volt 0.C. battery bank No. 2-I and 2-II and a full capacity charger.
TRAIN "B" consisting of 125-volt 0.C. bus No. 2-III and 2-IV,125-volt 0.C. battery bank No. 2-III and 2-IV and a full capacity charger.
APPLICA81LITY:
MODES 1, 2, 3 and 4.
ACTION:
With one 125-volt 0.C. bus inoperable, restore the inoperable bus to a.
OPERA 8LE 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 at least NOT stale 8Y within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUT 00WN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
b.
With one 125-volt 0.C. bettery and/or its charger inoperable, restore the inoperable battery and/or charger to OPERA 8LE 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 at least HDT STAlW8Y within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWI within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
SURVEILLANCE REQUIRDENTS 4.8.2.3.1 Each 0.C. bus train shall be determined OPERA 8LE and energized with tie breakers open at least once per 7 days tty verifying correct breaker align-ment 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 parameters in Table 4.8-3 meet Category A limits and 2.
The total battery teminal voltage is ]reater than er equal to 129 volts on float charge.
NORT.H ANNA - UNIT 2 3/4 8-13 Amendment No. Si
ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) b.
At least once per 92 days and within 7 days after a battery discharge where the battery teminal voltage decreased below 110 volts or battery overcharge above 150 volts, by verifying that:
1.
The parameters in Table 4.8-3 meet the Category B limits, 2.
There is no visible corrosion at eithar tercinals or connectors, and 1
3.
Average electrolyte temperature of at least 10 connected cells is above 60*F.
l c.
At least once per 18 months by verifying that-i 1
The cells, cell plates and battery racks show no visual indication of physical damage or abnornal deterioration.
2.
The cell-to-cell and taminal connections are clean, tight, and coater'. with anti-corrosion material.
3.
The resi',tance of each cell-to gell and teminal connection is less than or equal to 150 x 10- ohms.
l 4
The bat.tery charger will supply at least 200 amperes at 125 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-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 or simulated emergency loads for the de ign duty cycle 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 perfomance discharge test. Once per 60 month interval, this discharge perfomance test may be performed in place of the battery service test.
f.
At least once per 18 months, during shutdown, perform a performance discharge test of battery capacity if the battery shows signs of degradation or has reached 85% of its service life expected for the application. Degradation is indicated when the battery capacity drops more than 10% of rated capacity from its average from previous performance discharge tests, or is below 90% of the manufacturer's rating.
NORTH ANNA - UNIT 2 3/4 8-14 Amendment No. 84
TABLE 4.8-3 BATTERY SURVEILLANCE REQUIREMENTS i
I CATEGORY A(I}
CATEGORY B(2) l i
Parameter Limits for each Limits for each Allowable ( }
designated pilot connected cell value for each cell connected cell Electrolyte
> Minimum level
> Minimum level Above top of Level indication mark, indication mark, plates, and and < 1/4" above and < 1/4" above not over-maximum level maximum level flowing indication mark indication mark Float Voltage
> 2.13 volts
> 2.13 volts (c)
> 2.07 volts Specific
-> 1.200(b)
> 1.195 Not more than
~
.020 below the average of all connected cells Average of all Average of all connected cells connectg) cells
> 1.205
> l.195 (a) Corrected for electrolyte temperature and level.
(b) Or battery charging current is less than 12 amps when on charge (station batteries only).
(c) For any cell with voltage below the limit and electrolyte temperature > 3'F from the average electrolyte temperature, correct the cell voltage for average electrolyte temperature.
(1) For any Category A parameters (s) outside the limit (s) shown, the battery may be considered OPERABLE provided that within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> all the Category B measurements are taken and found to be within their allowable values, and provided all Category A and B parameter (s) are restored to within limits within the next 6 days.
(2) For any Category B parameter (s) outside the limit (s) shown, the battery may be considered OPERABLE provided that the Category B parameter (s) are within their allowable values and provided the Category B parameter (s) are restored to within limits within 7 days.
(3) Any Category B parameter not within its allowable value indicates an inoperable battery.
NORTH ANNA - UNIT 2 3/4 8 14a Amendment No. 84
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l 3/4.8 ELECTRICAL POWER SYSTEMS L
BASES 3/4.8.1 and 3/4.8.2 A.C. and D.C.
POWER SOURCES AND DISTRIBUTION The OPERABILITY of the A.C. and D.C. power sources and associated distriba-
~
tion systems during operation ensures that sufficient power will be available to supply the safety related equipment required for.1) the safe shutdown of the facility and 2) the mitigation and control of accident conditions within the facility.
The minimum specified independent and redundant A.C. and D. C. power sources-and distribution systems satisfy the requirements of General Design Criteria 17 of Appendix "A" to 10 CFR 50.
The ACTION requirements specified for the levels of degradation of the power sources provide. restriction upon continued facility operation cwmensurate with the level of degradation. The OPERABILITYsof the power sources are consis-tent with the initial condition assumptions of the accident analyses atd are based upon maintaining at least one of each of the onsite A.C. and 0.C. power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of the other onsite A.C. source.
The OPERABILITY of the minimum specified A.C. and D.C. power sources and associatud distribution systems during shutdown and ref'ueling ensures that
- 1) the facility can be maintained in the shutdown or refueling condition for extended time periods and 2) sufficient instrumentation and control capability is available for monitoring and maintaining the facility status.
The Surveillance Requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recomendations of Regulatory Guides 1.9 "Selection of Diesel Generator Set Capacity for Standby Power Supplies", March 10,1971, and 1.108 "Periodic Testing of Diesel Generator
'1 Units Used as Onsite Electric Power Systems at Nuclear Power Plants", Revision 1 August 1977 as modified by Amendment No. 48 issueo April 25, 1985.
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The Surveillance Requirements for demonstrating the OPERABILITY of the Emergency Diesel Generator batteries and the Station batteries are based on the recommendatinns 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 Recomended Practice for Maintenance. Testing, and Replacement of Large Lead Storage Batteries for Generating Stations and Substations" as modified by Amendment No. 84 issued March 25, 1988.
Containment electrical penetrations and penetration conductors are protected by either de-energizing circuits not required during reactor operation or by demonstrating the OPERABILITY of primary and backup overcurrent protection circuit breakers during periodic surveillance.
The surveillance frequency applicable to molded case circuit breakers and/or fuses provides assurance of breaker and/or fuse reliability by testing at least one representative sample of each manufacturer's brand of circuit breaker and/or fuse.
Each manufacturer's molded case circu' t breakers and/or fuses r.re grouped into representative samples which are then tested on a rotating basis to ensure that all breakers and/or fuses are tested.
If a wide j
'iORTH ANNA - UNIT 2 8 3/4 8-1 Amendment No. AS, 34
4 3/4.8 ELECTRICAL POWER SYSTEMS BASES 3/4.8.1 and 3/4.8.2 A.C. and D.C. POWER SOURCES AND DISTRIBUTION (Continued) l l
variety exists within any manufacturer's brand of molded case circuit breakers and/or fuses, it is necessary to divide that manufacturer's breakers and/or fuses into groups and treat each group as a separate type of breaker or fuse l
for surveillance purposes.
I l
The OPERABILITY of the motor-operated valves thermal overload protection I
and/or bypass devices ensures that these devices will not prevent safety-related valves from performing their function.
The Surveillance Requirements for demonstrating the OPERABILITY of these devices are in accordance with Regulatory Guide 1.106, "Thermal Overload Protection for Electric Motors on Motor-Operated Valves," Revision 1, March 1977.
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NORTH ANNA - UNIT 2 B 3/4 8-2