ML20205P629
| ML20205P629 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 04/09/1999 |
| From: | ENTERGY OPERATIONS, INC. |
| To: | |
| Shared Package | |
| ML20205P618 | List: |
| References | |
| NUDOCS 9904200254 | |
| Download: ML20205P629 (21) | |
Text
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3.7 Auxiliary Electrical Systems Applicability Applies to the auxiliary electrical power systems.
Objectives To specify conditions of operation for plant station power necessary to ensure I
safe reactor operation and combined availability of the engineered safety features.
Specifications 3.7.1 The reactor shall not be heated or maintained above 200*F unless the j
following conditions are met (except as permitted by Paragraph 3.7.2):
l A.
Any one of the following combinations of power sources operable:
l 1.
Startup Transformer No. 1 and Startup Transformer No.
2.
2.
Startup Transformer No. 2 and Unit Auxiliary Transformer provided that the latter one is connected to the 22KV line i
from the switchyard rather than to the generator bus.
j B.
All 4160 V switchgear, 480 V load centers, 480 V motor control i
centers and 120 V AC distribution panels in both of the ESAS distribution systems are operable and are being powered from either one of the two startup transformers or the unit i
auxiliary transformer, i
C.
Both diesel generator sets are operable each with:
i 1.
a separate day tank containing a minimum of 160 gallons of i
- fuel, 2.
a separate emergency storage tank containing a minimum of 138 inches (20,000 gallons) of fuel, 3.
a separate fuel transfer pump, and i
4.
a separate starting air compressor.
D.
DELETED l
E.
DELETED l
F.
The off-site power undervoltage and protective relaying interlocks associated with required startup transformer power sources shall be operable per Table 3.5.1-1.
G.
The selective load-shed features associated with Startup Transformer No. 2 shall be operable if selected for auto transfer.
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9904200254 990409 PDR ADOCK 0S000313 P
PDR l
Amendment No. 4, 60, FM 56 l
4 3.7.2 A.
The specifications in 3.7.1 may be modified to allow one of the following conditions to exist after the reactor has been heated above 200F.
Except as indicated in the following conditions, if any of these conditions are not met, a hot shutdown shall be initiated within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
If the condition is not cleared within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, the reactor shall be brought to cold shutdown within an additional 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
B.
In the event that one of the offsite power sources specified in 3.7.1.A (1 or 2) is inoperable, reactor operation may continue for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> if the availability of the diesel generators is immediately verified.
C.
Either one of the two diesel generators may be incperable for up to 7 days in any month provided that during such 7 days the operability of the remaining diesel generator is demonstrated immediately and daily thereafter, there are no inoperable ESF components associated with the operable diesel generator, and provided that the two sources of off-site power specified in
- 3. 7.1. A ( 1) or 3.7.1.A(2) are available.
D.
Any 4160V, 480V, or 120V switchgear, load center, motor control center, or distribution panel in one of the two ESF q
distribution systems may be inoperable for up to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, provided that the operability of the diesel generator associated with the operable ESF distribution system is demonstrated immediately and all of the components of the operable distribution system are operable.
If the ESF distribution system is not returned to service at the end of the 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> period, Specification 3.7 2.A shall apply.
E.
DELETED
'i F.
DELETED l
G.
DELETED H.
If the requirements of Specification 3.7.1.G cannot be met, either:
(1) place all Startup Transformer No. 2 feeder breakers in
" pull-to-lock" within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, restore the inoperable interlocks to operable status within 30 days, or submit Special Report pursuant te Specification within 30 days a 6.12.5 outlining the cause of the failure, proposed corrective action and schedule for implementation; or (2) apply the action requirements of Table 3.5.1-1, Note 14.
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Amendment No. 60,444, 444, U6 57
3.7.3 Both 125 VDC electrical power subsystems shall be operable when the unit is above the cold shutdown condition.
A.
With one 125 VDC electrical power subsystem inoperable, restore the 125 VDC electrical subsystem to operable status within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, or be in hot shutdown within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, and cold shutdown within an additional 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
3.7.4 Battery cell parameters shall be within limits when the associated 125 VDC electrical power subsystems are required to be operable.
A.
With one or more batteries with one or more battery cell parameters not within Table 4.6-1 Category A or B limits:
1.
Within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, verify pilot cell electrolyte level and float voltage meet Table 4. 6-1 Ca tego ry C limits,
2.
Within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> and once per 7 days thereafter, verify battery cell parameters meet Table 4.6-1 Category C limits, and 3.
Within 31 days, restore battery cell parameters to Table 4.6-1 Category A and B limits.
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B.
With one or more batteries with one or more battery cell parameters not within Table 4.6-1 Category A or B limits and unable to satisfy j
the requirements or allowable outage times of 3.7.4.A.1, 3.7.4.A.2,
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or 3.7.4.A.3, declare the associated battery inoperable immediately and perform the required actions of 3.7.3.A.
C.
With one or more batteries with electrolyte temperature of representative cells not within the limits of Specificatien 4.6.2.6 or with one or more batteries with one or more battery cell i
parameters not within Table 4.6-1 Category C limits, declare the associated battery inoperable immediately and perform the required actions of 3.7.3.A.
1 Bases The electrical system is designed to be electrically self-sufficient and provide adequate, reliable power sources for all electrical equipment during startup, normal operation, safe shutdown and handling of all emergency situations.
To prevent the concurrent loss of all auxiliary power, the various sources of power are independent of and isolated from each other.
In the event that the offsite power sources specified in 3.7.1.A (1 or 2) are inoperable, the required capacity of one emergency storage tank plus one day tank (20,160 gallons) will be sufficient for not less than three and one-half days operation for one diesel generator loaded to full capacity.
(ANO-1 FSAR 8.2.2.3) The underground emergency storage tanks are gravity fed l
from the bulk storage tank and are normally full, while the day tanks are fed from transfer pumps which are capable of being cross connected at their j
suction and discharges and automatically receive fuel oil when their i
inventory is less than 180 gallons.
Thus, at least a seven day total diesel l
oil inventory is available onsite for emergency diesel generator operation during complete loss of electric power conditions.
l Technical Specification 3.7.2 allows for the temporary modification of the I
specifications in 3.'.1 provided that backup system (s) are operable with safe reactor operation and combined availability of the engineered safety features ensured.
I Amendment No. 76,60,144 57a
Technical Specifications 3.7.1.E and 3.7.1.G provide assurance that the Startup Transformer No. 2 loads will not contribute to a sustained degraded grid voltage situation. This will protect ESF equipment f rom damage caused by sustained undervoltage.
The 125 VDC electrical power system consists of two independent and redundant safety related class lE DC electrical subsystems.
Each subsystem consists of one 100h capacity 125 VDC battery, an associated battery charger, and its distribution network. Additionally, there is one spare battery charger per subsystem, which provides backup service in the event that the preferred battery charger is out of service.
If one of the required DC electrical power subsystems is inoperable (e.g.,
inoperable battery, no operable battery charger, or inoperable battery and no operable associated battery charger), the remaining DC electrical power subsystem has the capacity to support a safe shutdown and to mitigate an accident condition.
Since a subsequent worst-case single failure would, however, result in the complete loss of the remaining 125 VDC electrical power subsystems with attendant loss of ES functions, continued power operation should not exceed 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.
Battery cell parameters must remain within acceptable limits to ensure availability of the required DC power to shut down the reactor and maintain it in a safe condition after an anticipated operational event or a postulated design basis accident. Cell parameter limits are conservatively established, allowing continued DC electrical system function even with Table 4.6-1 Category A and B limits not met.
With one or more cells in one or more batteries not within limits (i.e.,
Table 4.6-1 Category A limits not met, or Category B limits not met, or Category A and B limits not met) but within the Table 4.6-1 Category C limits, the battery is degraded but has sufficient capacity to perform its intended function.
Therefore, the battery is not required to be considered inoperable solely as a result of Category A or B limits not met, and continued operation is permitted for a limited period of time.
The pilot cell electrolyte level and float voltage are required to be verified to meet the Table 4.6-1 Category C lirui t o within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> (TS 3.7.4.A.1).
These checks will provide a quick representative status of the remainder of the battery cells.
Verification that the Table 4.6-1 Category C limits are met (TS 3.7.4.A.2) provides assurance that during the time needed to restore the parameters to within the Category A and B limits, the battery will still be capable of performing its intended function.
This verification is repeated at 7 day intervals until the parameters are restored to within Category A and B limits. This periodic verification is j
consistent with the increased potential to exceed these battery parameter limits during these conditions.
With one or more batteries with one or more battery cell patameters outside the Table 4.6-1 Category C limit for any connected cell, sufficient capacity to supply the maximum expected load requirement is not assured. Therefore, the battery must be immediately declared inoperable and the corresponding DC electrical power subsystem must be declared inoperable.
Additionally, other potentially extreme conditions, such as average electrolyte temperature of representative cells f alling below 60*F or battery terminal voltage below the limit are also cause for immediately declaring the associated DC electrical power subsystem inoperable.
Amendment No.
57b l
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e.
Diesel fuel from the emergency storage tank shall be sampled and found to be within acceptable limits specified in Table 1 of ASTM D975-68 when checked for viscosity,
)
water, and sediment.
5.
Once every 31 days the pressure in the required starting air receiver tanks shall be verified to be 2 175 psig.
Once every 18 months, the capacity of each diesel oil transfer pump shall be verified to be at least 10 gpm.
4.6.2 DC Sources and Battery Cell Parameters l
1.
Verify battery terminal voltage is 2 124.7 V on float charge once each 7 days.
2.
Verify battery capacity is adequate to supply, and maintain in operable status, the required emergency loads for the design duty cycle when subjected to either a battery service test or a modified performance discharge test once every 18 months.
3.
Verify battery capacity is 2 80s of the.nanuf acturers rating when subjected to a performance discharge test or a modified performance discharge test once every 60 months, once every 24 months when battery has reached 854 of the service life with capacity 2 100% of the manufacturers rating and showing no degradation, and once every 12 months when battery shows degradation or has reached 85% of the service life and capacity is < 100% of the manuf acturer's rating.
j 4.
Any battery charger which has not been loaded while connected to its 125V d-c distribution system for at least 30 minutes
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during every quarter shall be tested and loaded while connected j
to its bus for 30 minutes.
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5.
Verify battery pilot cell parameters meet Table 4.6-1 Category A limits once per 7 days.
6.
Verify average electrolyte temperature of representative cells is 2 60 F once per 92 days.
7 Verify battery cell parameters meet Table 4.6-1 Category B limits l
once per 92 days and once within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after a battery discharge
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to < 110 V and once within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after a battery overcharge to
> 145 V.
4.6.3 Emergency Lighting The correct functioning of the emergency lighting system shall be verified once every 18 months.
Amendment No. 44, M,4M,4%
100a
1 Table 4.6-1 (page 1 of 1)
Battery Cell Surveillance Requirements CATEGORY A:
CATEGORY B:
CATEGORY C:
LIMITS FOR EACH LIMITS FOR EACH ALLOWABLE LIMITS DESIGNATED CONNECTED CELL FOR EACH PAPAMETER PILOT CELL CONNECTED CELL Electrolyte Level
> Minimum level
> Minimum level Above top of indication mark, indication mark, plates, and not and 5 1/4 inch and s 1/4 inch overflowing above maximum above maximum level indication level indication ma r k
mark
- Float Voltage 2 2.13 V 2 2.13 V
> 2.07 v 1
Specific 2 1.195 2 1.190 Not more than Gravity *
- 0.020 below AND average connected
---~
cells 4
Average of all connected cells AND
> 1.195 Average of all connected cells 2 1.190 I
(a)
It is acceptable for the electrolyte level to temporarily increase above the specified maximum during equalizing charges provided it is not overflowing.
(b)
Corrected for electrolyte temperature.
(c)
A battery charging current of < 2 amps when on float charge is acceptable for meeting specific gravity limits following a battery recharge, for a maximum of 7 days.
When charging current is used to satisfy specific gravity requirements, specific gravity of each connected cell shall be measured prior to expiration of the 7 day allowance.
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Amendment No.
100b l
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Bases The emergency power system provides power requirements for the engineered safety features in the event of a DBA.
Each of the two diesel generators is capable of supplying minimum required engineered safety features from independent buses.
This redundancy is factor in establishing testing a
l intervals.
The monthly tests specified above will demonstrate operability 1
and load capacity of the diesel generator. The fuel supply and diesel starter motor air pressure are con'inuously monitored and alarmed for c
abnormal conditions.
Starting on complete loss of off-site power will be verified by simulated loss-of power tests once every 18 months.
The SR 4.6.2.1 verification of battery terminal voltage while on float charge l
helps to ensure the effectiveness of the charging system and the ability of the l
batteries to perform their intended function.
Float charge is the condition in which the battery charger is supplying the continuous charge required to overcome the internal losses of a battery and maintain the battery in a fully charged state.
The voltage requirements are based on the nominal design voltage of the l
battery (2.15 V per cell average) and are consistent with the battery vendor allowable minimum volts per cell limits.
The inability to meet this requirement constitutes an inoperable battery.
l The SR 4.6.2.2 battery service test is a special test of the battery capability, l
as found, to satisfy the design requirements (battery duty cycle) of the DC i
electrical power system.
The discharge rate and test length should correspond to the design duty cycle requirements. A modified performance discharge test may be performed in lieu of a service test.
The inability to meet this requirement constitutes an inoperable battery.
The modified performance discharge test is a simulated duty cycle consisting of just two rates; the one minute rate published for the battery or the largest current load of the duty cycle, followed by the test rate employed for the performance test, both of which envelope the duty cycle of the battery.
Since the ampere-hours removed by a rated one minute discharge represents a very small portion of the battery capacity, the test rate can be changed to that for the performance test without compromising the results of the performance discharge test.
The battery terminal voltage for the modified performance discharge test should remain above the minimum battery voltage specified in the battery service test for the duration of time equal to that of the service test.
A modified performance discharge test is a test of the battery capacity and its ability to provide a high rate, short duration load (usually the highest rate of the duty cycle).
This will of ten confirm the battery's ability to meet the critical period ot the load duty cycle, in addition to determining its percentage of rated capacity.
Initial conditions for the modified performance discharge test should be identical to those specified for a service test and the test discharge rate must envelope the duty cycle of the service test if the modified performance discharge test is performed in lieu of a service test.
The SR 4.6.2.3 battery performance discharge test is a test of constant current capacity of a battery after having been in service, to detect any change in the capacity determined by the acceptance test.
The test is intended to determine overall battery degradation due to age and usage.
The inability to meet this requirement constitutes an inoperable battery.
Either the battery performance discharge test or the modified performance discharge test, described above, is acceptable for satisfying SR 4.6.2.3; however, only the modified performance discharge test may be used to satisfy SR 4.6.2.3 while satisfying the requirements of SR 4.6.2.2 at the same time.
Amendment No. 24,36 101
The acceptance criteria for this surveillance are consistent with IEEE-450.
This reference recommends that the battery be replaced if its capacity is below 80s of i
the manuf acturer's rating. A capacity of 804 shows that the battery rate of deterioration is increasing, even if there is ample capacity to meet the load requirements.
The frequency for this test is normally 60 months.
If the battery shows signs of degradation, or if the battery has reached 854 of its service life and capacity is < 100% of the manuf acturer's rating, the frequency is reduced to 12 months.
However, if the battery shows no degradation but has reached 85k of its service life, the frequency is only reduced to 24 months for batteries that retain 2 100s of the manuf acturer's ratings.
Degradation is indicated, according to IEEE-450, when the battery capacity drops by more than 104 relative to its capacity on the previous performance test or when it is 2 lov below the manuf acturer's rating.
SR 4.6.2.4 requires that each required battery charger be capable of supplying the connected loads while maintaining the battery fully charged.
This is based on the assumption that the batteries are fully charged at the beginning of a design basis accident, and on the safety function of providing adequate power for the design basis accident loads.
SR 4.6.2.5 verifies that the Table 4.6-1 Category A battery cell parameters are consistent with vendor recommendations and IEEE-450, which recommend regular battery inspections (at least once per month) including voltage, specific gravity, and electrolyte level of pilot cells.
The SR 4.6.2.6 verification that the average temperature of representative cells 1s 2 60*F is consistent with a recommendation of IEEE-450, which states that the temperature of electrolytes in representative cells (~10t of all connected cells) should be determined on a quarterly basis.
Lower than normal temperatures act to inhibit or reduce batter y capacity.
This surveillance ensures that the operating temperatures remain within an acceptable operating range.
This limit is based on manufacturer recommendations.
SR 4.6.2.7 verifies that the Table 4.6-1 Category B battery cell parameters are consistent with vendor recommendations and IEEE-450, which recommend regular battery inspections (at least once per quarter) including voltage, specific gravity, and electrolyte level of each connected cell.
In additi on, within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after a battery discharge to < 110 V or a battery overcharge to > 145 V, the battery must be demonstrated to meet Category B limits.
Transients, such as motor starting transients, which may momentarily cause battery voltage to drop to s 110 V, do not constitute a battery discharge provided battery terminal voltage and float current return to pre-transient values. This inspection is also consistent with IEEE-450, which recommends special inspections following a severe discharge or overcharge, to ensure that no significant degradation of the battery occurs as a consequence of such discharge or overcharge.
Table 4.6-1 delineates the limits on electrolyte level, cell float voltage, and specific gravity for three different categories. The meaning of each category is discussed below.
Category A defines the normal parameter limit for each designated pilot cell in each battery.
The cells selected as pilot cells are those whose temperature, voltage and electrolyte specific gravity approximate the state of charge of the entire battery.
Amendment No.
101a l
The Category A limits specified for electrolyte level are based on manufacturer recommendations and are consistent with the guidance in IEEE-450, with the extra 1/4 inch allowance above the high water level indication for operating margin to account for temperatures and charge effects.
In addition to this allowance, footnote (a) to Table 4.6-1 permits the electrolyte level to be above the specified maximum level during equalizing charge, provided it is not overflowing.
These limits ensure that the plates suffer no physical damage and that adequate electron transfer capability is maintained in the event of transient conditions.
IEEE-450 recommends that electrolyte level readings should be made only after the battery has been at float charge for at least 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.
The Categcry A limit specified for float voltage is 2 2.13 V per cell.
This value is based on the battery vendor allowable minimum cell voltage and on a recommendation of IEEE-450, which states that prolonged operation of cells
< 2.13 V can reduce the life expectancy of cells.
The Category A limit specified for specific gravity for each pilot cell is 2 1.195.
This value is characteristic of a charged cell with adequate capacity.
According to IEEE-450, the specific gravity readings are based on a temperature of 77*F (25'C).
The specific gravity readings are corrected for actual electrolyte temperature.
For each 3*F (1.67'C) above 77*F (25'C), 1 point (0.001) is added to the reading; 1 point is subtracted for each 3*F below 77'F.
The specific gravity of the electrolyte in a cell increases with a loss of water due to electrolysis or e va po ra t io n.
Category B defines the normal parameter limits for each connected cell.
The term
" connected cell" excludes any battery cell that is jumpered out.
The Category B limits specified for electrolyte level and float voltage are the same as those specified for Category A and have been discussed above. The Category B limit specified for specific gravity for each connected cell is 2 1.190 with the average of all connected cells > 1.195.
These values are based on manufacturer's recommendations.
The minimum specific gravity value required for each cell ensures that the effects of a highly charged or newly installed cell will not mask overall degradation of the battery.
Category C defines the limits for each connected cell.
These values, although I
reduced, provide assurance that sufficient capacity exists to perform the intended function and maintain a margin of safety.
When any battery parameter is outside the Category C limits, the assurance of sufficient capacity described above no longer exists and the battery must be declared inoperable.
The Category C limits specified for electrolyte level (above the top of the plates and not overflowing) ensure that the plates suffer co physical damage and maintain adequate electron transfer capability.
The Category C limit for float voltage is consistent with IEEE-450, which states that a cell voltage of 2.07 y or below, under float conditions and not caused by elevated temperature of the cell, indicates internal cell problems and may require cell replacement.
The cate :ry C limit of average specific gravity 2 1.190 is based on manufacturer recommendations.
In addition to that limit, it is required that the specific gravity for each connected cell must be no less than 0.020 below the average of all connected cells.
This limit ensures that the effect of a highly charged or new cell does not mask overall degradation of the battery.
Amendment No.
10lb l
Footnotes (b) and (c) to Table 4.6-1 are applicable to Category A, B,
and C specific gravity.
Footnote (b) to Table 4.6-1 requires the above mentioned correction for electrolyte temperature. This current provides, in general, an indication of overall battery condition.
The value of 2 amps used in footnote (c) is the nominal value for float current established by the battery vendor as
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representing a fully charged battery with an allowance for overall battery condition.
Because of specific gravity gradients that are produced during the recharging process, delays of several days may occur while waiting for the specific gravity to stabilize.
A stabilized charger current is an acceptable alternative to specific gravity measurement for determining the state of charge.
This phenomenon is discussed in IEEE-450.
Footnote (c) to Table 4.6-1 allows the float charge current to be used as an alternate to specific gravity for up to 7 days following a bactery recharge. Within 7 days each connected cell's speci fic gravity must be measured to confirm the state of charge.
Following a minor battery recharge (such as equalizing charge that does not follow a deep discharge) specific gravity gradients are not significant, and confirming measurements may be made in less than 7 days.
The SR 4.6.3 testing of the emergency lighting is scheduled every 18 months and l
is subject to review and modification if experience demonstrates a more effective test schedule.
REFERENCE FSAR, Section 8 l
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l Amendment No. 24,26, 101c l
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MA.RKUP OF CURRENT ANO-1 TECilNICAL SPECIFICATIONS (FOR INFO ONLY) l 1
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3.7 Auxiliary Electrical Systems Applicability Applies to the auxiliary electrical power systems.
Objectives To specify conditions of operation for plant station power necessary to ensure safe reactor operation and combined availability of the engineered safety features.
Specifications 3.7.1 The reactor shall not be heated or maintained above 200*F unless the following conditions are met (except as permitted by Paragraph 3.7.2):
A.
Any one of the tollowing combinations of power sources operable:
1.
Startup Transformer No. 1 and Startup Transformer No.
2.
2.
Startup Transformer No. 2 and Unit Auxiliary Transformer provided that the latter one is connected to the 22KV line from the switchyard rather than to the generator bus.
B.
All 4160 V switchgear, 480 V load centers, 480 V motor control centers and 120 V AC distribution panels in both of the ESAS distribution systems are operable and are being powered from either one of the two startup transformers or the unit auxiliary transformer.
C.
Botn diesel generator sets are operable each with:
1.
a separate day tank containing a minimum of 160 gallons of
- fuel, 2.
a separate emergency storage tank containing a minimum of 138 inches (20,000 gallons) of fuel, 3.
a separate fuel transfer pump, and 4.
a separate starting air compressor.
D.
pELETEDE*eth-ebet ica bat-tc rica arc Operstic and cach is capabic of eupplyi ng power-tethe-124V d - c diebe-ibution system
".t lecce ene-bat-tef y cha rgc : c c : c ciet-ed-wit 4-h-et-et-ion-eatt : r y ie-ope +ab-ler D E LET E DAt--least 2 cf 3 d-c ccnt+c1 pcwe r ;eu:cc: tc t-he--le&Vwi-e E.
T ewirehye++diettibuti-en-eystcm :c cper-ab 1 c.
F.
The off-site power undervoltage and protective relaying interlocks associated with required startup transformer power sources shall be operable per Table 3.5.1-1.
G.
The selective load-shed features associated with Startup Transformer No. 2 shall be operable if selected for auto transfer.
Amendment No. 46,60,146 56
3.7.2 A.
The specifications in 3.7.1 may be modified to allow one of the following conditions to exist after the reactor has been heated above 200F.
Except as indicated in the following conditions, if any of these conditions are not met, a hot shutdown shall be initiated within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
If the condition is not cleared within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, the reactor shall be brought to cold shutdown within an additional 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
B.
In the event that one of the offsite power sources specified in 3.7.1.A (1 or 2) is inoperable, reactor operation may continue for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> if the availability of the diesel generators is inmediately verified.
C.
Either one of the two diesel generators may be inoperable for up to 7 days in any month provided that during such 7 days the operability of the remaining diesel generator is demonstrated immediately and daily thereafter, there are no inoperable ESF components associated with the operable diesel generator, and provided that the two sources of off-site power specified in
- 3. 7.1. A (1) or 3.7.1.A(2) are available.
D.
Any 4160V, 480V, or 120V switchgear, load center, motor control center, or distribution panel in one of the two ESF distribution systems may be inoperable for up to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, provided that the operability of the diesel generator i
associated with the operable ESF distribution system is demonstrated immediately and all of the components of the operable distribution system are operable.
If the ESF distribution system is not returned to service at the end of the 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> period, Specification 3.7.2.A shall apply.
j E.
DELETEDWi t h no cpereMe-bat-tc r y chatger a c c c c i a t e d. it4t-ene wtat4en batt e r y, cperatier is allcwed-t
- : n t-i+tue-fer a g r-led--ef-e heute-previded-at-leas t-ene-batt e r y chenyer is operable en the oppccitc t re4+t -after-which Spc ci fi ea t ie n 3. ' . 7; c ha14-epply r 7
F.
DELETFDGnc cf the tu s tst-ion-batt-ersee-and-t4tc accceleted diet-r4but4en-eystem-may-be-itteperet 1 : for-e-4teur-e-previ+1ed that-the re a re no inepeseble-eafety-releted ccmponettte aseeetated-with thc :cmai+t1+wf-etet4en-bat t c : y. hieh-ere tedunda+it-tc the i+teperehl c : t a t i c n ba etery-a ad-t4te eperabi4-1-ty-of-the-dic cl genereber-is-vet-144ed-ifnmediet+1yr Ff-t4te-baetery i s not-retemed-t c c:vicc at-t4:: c nd c f t-he-e hour-persed -epee +f-ieat4en 3. '. 2, % :ha44-applyr 7
G.
D ELETEDhe-eetal-pouc r scurccc f rcm t4te-plent t: the am tehyerd and-t he at+endant-di-et-r-ibut-ion-eye t em ma y be i nopereb-le-fer-e-4teut*r after--whi c h S pe c i f4(m-1. 7. 2.
- c h a l l a pplyr H.
If the requirements of Specification 3.7.1.G cannot be met, either:
(1) place all Startup Transformer No. 2 feeder breakers in
" pull-to-lock" within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, restore the inoperable interlocks to operable status within 30 days, or submit within 30 days a Special Peport pursuant to Specification 6.12.5 outlining the cause of the failure, proposed corrective action and schedule for implementation; or (2) apply the action requirements of Table 3.5.1-1, Note 14.
Amendment No. 60,444, W,44 57
3.7.3 Delete ( Both_121 yp_C g egtr_icalipo_wer subsystems shall_be operable,when thpJ nitjs,abpy _the_. gold _ shutdown _gondition...
b_t d kkhm0fi.2_MDC, electrical _ power subsystem inoperable, restore _the l
12LyD_C. el e c t ri_ga l, s ub s y s t e m, t o_pp e r a b l e. s t a t u s within_8_ hours,_.or be.
UL.IlO_hJ_hgtppygg((_hig,_,t he next_6_ hours,_and.. gold. shutdown _within an a dd i t i o n a l. _3 0 _ho u r s.
3 ltLJ_a t tegyy]_1,p aga me t e r s,s h a l l,b1 within, limits _when Jhs as.soci_ated 125 JDC eJegtyical, power _sybsystems are. required _.to_be gperable.
A J ith b
=9 n e_o r mo r t a t t e r_i e s wJtho n e_o r mo r e _.b.a t t e ry_ ge l l_pgr a me t e r s not within T_able 4.6-l_ Category A or B lim _i,tsi L
11 J ithi L L hgur,=yepifLp,i. lot __ gell _ elect rolyte. level _and_ float l
I 4
MR Ea9 L mee LTabj L 1 g LCaieggry g jimits, Wi thi,nl4_ho,u rsandjngep r_ 7 days _the rpa f tey,_ve rify,ba t t e r,y 2.
n a
cell paramet,ern meet Table d.,6 1 Category _C__ limits,_ang 3 - m31 $_Il L11. Jays, _ _r.es t o r e _ba t t e ry__ce.1]. p a rame t e r s_ t o._ Tabl e_4. 6;l i
Category _A and.B_ limits r
a El j }tl(gn go_5gmpre bat (eries,with_onn or,mpre_ bat _tely cell parameters ort Jii t hin_ TablLhh(Sa t ego rLAJLL1imiis,ari yablg,tg_ satis fy d
theg e_quirements_pr_ allowable _ outage t irpe s _o f 3. 7. 4. A.1,_32 4 A. 2, 2
RL 12 -a A3,,ppgla rLt he _ a.ssoci_a tedAa(teryj ngpe table _immedia t ely 7 4 a nd_ pe_r f o rm,t he_r e. qui re_d_ a c t i o ns. o f_3. 7. 3.. A.
CmW i,t_h _ o ne..o r._moleJa t t e ri e s wi t h el_e g_t rolytAr empe ra tu re_o f.
a representative _gelis not_within_the_ limits _of_Sp.egification__4.6.2 6 3
o r wi t h _ one_o r _mo re _ ba t t e rie s_ wit _h_one_o r_mo re_ba t; t e rygll_
Rarameters,not within_ Table _4._6:1_ Category _C_ limits,,deglar_e_the associated. battery _inoperabje_immediately_and_ perform _the..re, quired a c t i_o n s o.f_ 3 7. 3.A._
Bases
]
The electrical system is designed to be electrically self-sufficient and provide adequate, reliable power sources for all electrical equipment during startup, normal operation, safe shutdown and handling of all emergency situations.
To prevent the concurrent loss of all auxiliary power, the various sources of power are independent of and isolated from each other.
In the event that the offsite power sources specified in 3.7.1.A (1 or 2) are inoperable, the required capacity of one emergency storage tank plus one j
day tank (20,160 gallons) will be sufficient for not less than three and one-half days operation for one diesel generator loaded to full capacity.
(ANO-1 FSAR 8.2.2.3) The underground emergency storage tanks are gravity fed from the bulk storage tank and are normally full, while the day tanks are fed from transfer pumps which are capable of being cross connected at their suction and discharges and automatically receive fuel oil when their inventory is less than 180 gallons.
Thus, at least a seven day total diesel oil inventory is available onsite for emergency diesel generator operation during complete loss of electric power conditions.
Technical Specification 3.7.2 allows for the temporary modification of the specifications in 3.7.1 provided that back'ip sys tem (s ) are operable with safe reactor operation and combined availability of the engineered safety features ensured.
Amendment No. %, @,444 57a
Technical Specifications 3. 7.1. F and 3. 7.1.G provide as surance that the Startup Transfctmer No. 2 loads will not contribute to a sustained degraded grid voltage situation.
This will protect ESF equipment from damage caused by sustained undervoltage.
Ihtl25_yDL eleStrical_ ppyer sysjem gonsists_,of_two=ind pendgn3_and_ redundant; e
f 88felY relatei classj E,pC elegtrical,syb, systems Eaci subsystem _cpnsittn.of gne
=
=
19 h capacJty J25_yDC,bjttery,_an associated batteryg harger,,a_nd its
@ s351bution,networf.u,Aidi_tionally, _the re_is. one_ spa re _ba tte ry cha rge r, pep H ks75teR,_which prgvi g s, backup sergice J Lthe event thac_the_preferre.d battery gha Ege r,i,s,ou t __o f _ _s e rv i ge.
Ifm9ne of the required _D_C elect _rica( power, subsystems is_ingpeJable_Je.g3,_
iR9Pelablgbattyryo no_operabl_e_ bat 3eryJ arger,_oL ingperable ba_ttery_and no h
gperable__ associated battery charger),_the_ remaining...DC_electrigal. power _ subsystem has.the capaci.ty tggupport,a,sa_fe_shutdgwn and to miti_ gate an a.gg_ident ppndition Since a g
subsequent _ wors t _ gas e__ single.f ailu re _would, _ hgweve r,__resul t kU Sl?. cgmp,lete loss of,the_ remainir}g_12 5. VDC. elegt rical_p,9we r subsyslemsyith attendant loss..of ES_f_ungtions,_ continued powg Loperation__should_not. exceed
@ hoyrs,.
Batterymcell,pa ramete rs_ mus t;_ remain within_ accep3able_ limits _to_ ensure M.ai_1 ap}l13ya.Liht requi redlC_ power to_ shutjo_wn the_ rea_gt.9r_animaintain_iLirj L5afeJ9qditiggjgf m anjittJcipa33 j perationa Levent_or_a postulated _. design j
d basis a.ggident
_ Cell _ parameter _ limits __are conservatively _eslablished,= allowing continued DC.. electrical _syste_m_ function even ylth_ Table _4.6 M ategory_A_an Q limtpsjoj a m Elth an ngr more cells in one b
grJ g5L atterigs not__within_limitsj i_.e.,, Table
=
=
ish l CatqgqpL A limits _not_ met,_or_Categgry B___ limits _not met,_o_r_._Categgry.A an_d
=
hijmils not_meJ)J ut within the T_able__4.6;1_Gateggo y_C__ limits,_the battery _is degraded,but still_has sufficient capacity _to_ perform its__ intended _ function.
Therefore,_the_ battery is_not_re_ quired _to_be,gonsidered_inoper,able solely _as_a e
res_ ult.of gategory A =gr_B_ limits _not met,_and_gontinued_ operation _is, permitted o
.fgr a limit;ed period.of_t_ime__. _.Ths pilot._ cell elegtrolyte_ level and_ float _ voltage aJe requigqd tgJ L yggilied to meet _th (Table M 71_Categggy 1 11mits_within
=
ld9PE=_lTS L] 4 _hl1 Thesg_chechs wi l L p ro vi de_a _qu i cL rep r e s e_n t a t i ve_s t a t u s.
j
=
o f_ t he_r ema i nde r_ o f.._t he_ ba t t e ry ce ll s yerificatig Lth_at_the_ Table A_6-1 Category =Climits are._ met _1TS J h4.. h 2_),provides._ assurance _that_during.the time "lggdei}ggesLgphthe gar.ameters_to wi _t h.i n_t h e,. C a t e go r yJ a nd _B_limi t s,_ t h.e w
ba tte ry _ wills til1 be _. capable _ o f_pe r f o,rming__it_ s intended._tunc3 ion
_Thijs veri ficat_ ion __is._ regea ted_at _7_ day __ intervals until the parameters _are re s t o red _t;o wi t h i n. Ga t e g g gyJJ gq=B_=l i tils._T h i s p e r i odi c_ve l i.f i_ga t i o n _i s _co n s i _s t e n t_wi t h
_ f e
thgir195 eased _ pptential _ to _excee.d_these_ba t;te rLpa ramete r_ limits._during the,s e condi.tions.
KithJne g5ygge patyypigsy ith one org oreJ at_tery_ cell, parameters _outside the n
Table 4 6 1 Cptegory (limit f o r_any conneet ed_.g_ellusu f ficient_ capacity ___lo 2
supply,tht maximumjxpegted_ load _ requirement,ignol assur_ed.___Therefore t_pe batlery_must_be_immediately declared inoperab1A andj he.correspgnding_DC gl e cJj_{c a l,goyeL s ub.s y s t e_m_yu s,t b L gcl_ared inoperable.
d Additionally,_o3her potentially_ extreme _ggnditi_ons, such as average _ ele _ctrolyt3 ASFFRIa t p g._q f,gp p e spp t a t_i vree l.l_s_f a l l i n g b e l ow 60* F gr ba t_t e r y,J e rm,i n a l
=
v Itage pelo.w_the_limiit_prejlso cause f or_immed i a t ely de cl a r,i_n g_3 h e _a s s ogi a tied DC_.e l e g.t; r i c a l_.p oypg u b s y s_t e m..i n op e r a b l e.
Amendment No. %,60,444 57a
a
\\
e.
Diesel fuel from the emergency storage tank shall be sampled and found to be within acceptable limits specified i
in Table 1 cf ASTM D975-68 when checked for viscosity, water, and sediment.
5.
Once every 31 days the pressure in the required starting air receiver tanks shall be verified to be 2 175 psig.
Once every 18 months, the capacity of each diesel oil transfer pump shall be verified to be at least 10 gpm.
4.6.2
&t-e t4en-Be t-teeies-end-ewitehyard-Ba t4ecies-pC_ S o u r c e s and Battery Ce11 farap q eg_s 1.
The-voltege,-t+mperetu e-e-and-speei41 : pavity-ef ' pHet-eeH in-each--hank-and-t-he-overeH-better-y-velteve-ef-eeeh ba r.k c ham Le r c.eu ced-end-reeerded 4+i4-yye ri f y ba t t e ry,t e rmi na l _ volta qL s i
i L12L2 V on f l o a t,,ch a r_f agghea,ch 7 d_ays.
2.
Meesuremettee-shal4-hc made quetteely-ef-Veltege O f cach ccll te i
t-he-neatest 0. 01 vol-br-ef-the-ePeeH4e g ra vi ty o f cacn ccll, and-ef the tempefetef c.
o f-evet-y-f-14th cell in cach bank.
The l e ve l O f-t h e clect-rel-yte chall bc checked and adjected ac requi-ted.
?.11-de te, iaeludittg-thc amount cf
.bef-edded-to-eny ee41, chall bc :cccededverify_ battery gapacity_is__ adequate,_to supply 1 a.nd_maintai_n_in operable _ status,_the_ required emergency _ loads for the design duty _, cycle when_ subjected _ to_ eit_her._a batte ry_s e rvic_e_tes t or
- a. modi f ied_ pe r f o rmance di s_g_ha rge_ t es_t_ once _every_18_ months.
3.
Onee-every-le-ment 4te, a perfetmanee-dieehe:ge t e et-shah-be eendaeted-in-seeee+ianee-wi-tiv-the-manufeete r c r '
i n et-teet-iener the-purpccc c f-deter +nin+++g ba t t c :y capeeny-A/e r i f y_ba t t e ry_capa ci ty 1s _L8_.0i_g_f_the_ manufacturers __ rating whgn_ s_uMected to a performance j
l m
fiischarge_ test..or_a_mpdified. performance _ discharge test once every 60_ months,_pnce_every__24_ months _when_ battely_has reached 85a of the s e_r vi ce__l i_f e._wi t h c_apa ci t yJ_10.01_ o f__t he_ma n u f a c_tu r e r s_r a t.in gg51
=
showing _no_degradalion,_and_on_ce_every,12_ months _wben battery _sjows d eg ra_da t i_o n_p._r_ h a s_ r_e a ch e_d 8 5 5 of the service life and capacityjp, 1,10.0+ o f_t he_Jna nu f a c tu r e r' s ra Qng 4.
Any battery charger which has not been loaded while connected to its 125V d-c distribution system for at least 30 minutes during every quarter shall be tested and loaded while connected to its bus for 30 minutes.
bmSefifL_ battery pilot cell parameters _ meet _ Table 4. & l_CatggoryJ limits _onceJ er.7_daysg 6.
Veri fy average _.elegtrolyte_ temperature _q f_represen_tative_ cells _is L601_on.ge pe r_92 days..
=
L VerifyJattery Jell parameJers_. meet Ta b l e_4_.,61Ca t ego ry_B_ l imi_t s.
enceJ er_ 92_ days _and.onge_within_24_. hours _after_a_ battery _ discharge to_(110_V and o_nce__within_24_ hours _after_a battery _overgha.rge_tp
> 145 v.
4.6.3 Emergency Lighting The correct functioning of the emergency lighting system shall be verified once every 18 months.
Amendment No. M, M, MA, M6 100a
Tablej.6;ljpage_1._of,.1]
Qa t t3py._ Cp l 1 S u rve i lla nce,.Requi r eme_n_t s GAT E_Gpff,hy CATEGORY B; CAT _EGORY_CL L{MITS FO_R EA.CH LIMITS FOR E/ygH ALLOWAB_LE LIMITS DESIGNATE.D CO_titi.ECTED. CELL FOR_EAC_H PARAMETER RILOT_. CELL CONNECTED _ CELL El e c t r_g l y t_e_ Le ve l 2 Minimum _ level
?_ Minimum _ level Above_ top o.f 1PdiC _t;_i_on ma r k, indication mark, plates and_no,t and s_1/4._ inch and 5_1/4.ingh ov.erflowing apoye maxi _ mum above maximum leYthdPiSation d
13Ye ma_ r k(E,i ndica t ion mark..i Ogat Volta 99 2.2.13.V 2_.2_.13_. V
?.2 01_V
=
1 EPSEb b-2,.1 J95 2_1.1_90 GJaylty =b m
-- - - ~
t{g t _ mg r e_.J h a n 0_. 02_0_ b e l o w AXD
.a ge_cgnnected
_ =. = = _ =
Average _of_all_
connected cells
@[D
~
Avera.ge_of_all co n ne c t ed__c e l..l s 2 1 19.0 laL_ I t__. is_ageeptable_f g r_t he elect rolyte_ level _to_t.empo ra rilyj ngrea se_ abo _ve the specified. maximum...during equa_liz[ng,_ charges p.royidedj tj s,not 9 ve r f l_owi ng.
(b)_.
Corrected for el_ectrolyte, temperature.e.
191_ ~.. A _b a tt e r.y_. cha rgi_ng _ cu r ren t. o f < 2_ amp s when onJ1 oat =qharg_e_is_ acceptable he a
=
fEL mge Eing spe gi f.iq.g ra vi tylimi,t s_ f_oll_gwi ng..a ba t t e ry_rech a r_ge f o_r a_
s maximum _.o L7 da.ys. _When._cha rging _cu r ren.t_ i s_us ed _to. s a tis f y spe_ci.f,1 c g rayi t glequ15 empp t s, =sp epi f i c g payi ty_g t e a ch con n e c t e_d _ gel l _s h a_l l_ b e
=
mea su ped p_rio r. t o_expi ra t ion... Q f.. the 7.__ day all_lowance.
i
)
I 1
Amendment No.
100b l
l
Bases The emergency power syctem provides power requirements for the engineered safety features in the event of a DBA.
Each of the two diesel generators is capable of supplying minimum required engineered safety features from independent buses.
This redundancy is factor in establishing testing a
intervals.
The monthly tests specified above will demonstrate operability and load capacity of the diesel generator.
The fuel supply and diesel starter motor air pressure are continuously monitored and alarmed for abnormal conditions.
Starting on complete loss of off-site power will be verified by simulated loss-of power tests once every 18 months, eertMdee4ng-eys tem redundartey, the s p e c i-f4ed-teet4 ftq-i rrtervele-fer -t he s t-a t4 en-be t-beri es-e houl d-4>e-ede<ptate-te-det-eet-and-ee eeee t-e rry-mel4efte t-ien be f or e--i-t--ee=t-r esult-in--eyetern-mel4ene t4er; Ba tte r4ee-wi44-deter 4etet-e wi t h-t4 fne7-hu t-p reei pi teu s-f+14* re-t e-ext-f<. mc l y u rthhel y.
The c ue+ei44+ nee s peci f ied-le-t4ta t--whieh-hee-been-demonst+e t ed-ever-t4te-yeare-t e-previu a n indice t4en-ef. ee14-4>eeemhtg-unserviceabl ; I ang-4+efer c t - f a44sr Reut4ee-be+e ry-mohttenanc : c peebf4ed-by-t he-eartu fweterer-hyeledes regu le r4 y-eeheduled-equa4+eing-eha rg a i n-er der-te-re t+ie-t4te-eepaei+y-e f the-beEtetyr--A-test-diseharge-eheu14 bc ccnd u c ted-te-ec cc r t a i n t4te ee pa bi4 i+y-e f-t4te-bat-tery-te-perfet m-ir c dccign-f* net 4en--urwier pc:tu1ated aeeldent-eendi+1c.
? n--exec c e nc d rop-ef--vel t a g e wi-th-r e c r e c t to t-ime-+e indicat-ive-of--required-bat +eey-maintenance e r repl a ce me nt,-
The_SR_.J16. 2 el_ ve ri fica t ion _o f_ baQe ry_te rmigl._ voltage _while_on_ float _cha rgg
.helpsj g enspre the_ effectiveness __of_the_ charging,Jystem and the ability _of_the bat,tegies to, perform _their intended _fungtion floaLcha,rge is the condition in WIich_th b
L aEtegy=gharget_is._ supply _ing the continuousg harge required _to overcome l
o Ehe inte rnal _los s es __o f. a_ba t te ry _ and__maintai.n thg,b_ajte ry_in.. a_f ully. cha rged slate The_vpliage require _ments_are b sed,pnJ he_ nomina _Ldesign voltage,pf t,h,3 3e hat,tery J2215 V,per_ cell _averageL_and ar hco g stent _ lith.the_ battery _vendoJ m
a l l owa b le Jni nigum. vql t s pg r _cel_l, limi t s. The inability _to mee nthis_requir.ement
=
EPR811tutesj gingpptable_kattery, The SR 1 6._2.2_ battery _ service test _is_a_specia ltest_of__the battery _ capability,.
as_found,J o. satisfy _the_ design geguirements_[ battery _dujy_qy,g y of the DC ele.ctrigal_ power _ systemw }Ldischarge rate _and_ test _ length _should_cgrrespgA _to Tr d
m the design _ duty cycle _ requirements._ A modified _ performance _disgharge_ test _mayJ e performed in lieu of a service test.
The inability _to_ meet _this_requiremen_t e
cgnstitutes_an._iggperahle_batteryg Igmodi fied per[9rmance_di,scha rge_tes t is__a_sim_ulated_ duty gycle_ consisting _pj hst,.two_ rates; the one minute rate published for_the. battery or_the_largesJ c u pr e n_t _1. p a d._g=f _t h ej u_t yJy c l ec_followed_by the test._ rate emp1,oyed_for_the performance._ test,. both_of_which_ envelope lhe_ duty J y.gle_of_the_ battery.
Singe e u
_thg gmpere-hours _remoyed_by_a_ rated _one minute _ discharge r ep,r e.s e n t.s_a. ve ry_ s ma ll pqrtign_of the_hattery__ cap =acity,_the_ test _ rate can_be_ changed to that for the i
pe r f_o rma nce_tes t_ withou t_ comp rornising_the_results _o f_the_pe r f o rma nce. dis chaJge e
_The b.a t t e rym_e rmj na l__vol t a ge fgr_the y dif_i.e_d per_formance_ dis.ghargel es.t tes_t t
=
_should_remalA aboveJhe_minimurn battery _vgitage _speci fi_e.d..in_the battery _ servi _ge i
test _fg L.the_durati_on_,of__ time equal tgJ ha Lof_the_ servi _ce_ test.
A modi _f { ed,p3 r f o r_ mange _d.is gha rge_tes t _is__a_ tes t _of th_e_ba tte rgejpa city _and _it s abilft_y_t% p[gvi_de a hi.gh_ rate #_short_ duration _ loa.d_[ usual.ly the jighest_ rate _of EIl%5M y,qyclela_ T_ higg Lo f ten _confirgEhe _hatygy's _ abilA tglo_ meet.the c r i t i_ga l _ppe r i od pf_t hni g a d _du ty cy.c l e dL a d_dj t i o n39_de t e rmJ n i n g_i t s_pe r c e n t a ge f
=
i 9 loEedM8P3 City u Ini_tia.l_gonditions_.for the_ modified aerformance discha.rge tgst J guldLhe_.identica1 to_these spegiliei for_a__s.ervice_ test _and Jhttyt dis _gharge_ rale nJust_ enyelope_the duty gycle oQhe_ service _ test _iLthe mg_difj.ed PeIfpymance_diJcharge_ test _is_perfgrmed_in_ lieu of_a_ service.tes_t.
The SRJ d.2_ 1 battery,performange dis _ charge tes.t_is_a_ test _ofEgonstant. current
.=
capaclih _of_a_ battery _after_having_been in_ servi.ge,_tn detegt_any._phange J J he Amendment tio. M,M 101
I i
capaci_gy_detspmingd byJhe aSceptange tes t. ___The test _is_. intended to_det. ermine ove ral1 bat.terymdegradation,dueJ p, age _and_ usage Th_e,i n a b i l i s y_. t o. me e t. _t hi s requirement _gonstitutes_an_ inoperable battery 1 e
Eithet the battery discharge test or the modified erformance d[sfpa 5 M {de[performancegfiN_k[a[biy M [ acc d a y t b dth y i[g((p[ [ 6f2 3 S
h?WeYSfsJ glyJhe podi.fied_ performance disgharge_ test _may be used_to sati_sfy_A m
b62 3 while_ sa t is f yi_rgg, the. reqp rements_of sR 4. 6. 2. 2_.a t_ the s ame_ time.
1 t
= -
ThLay,geptange.. c ri t.e ria_ f o r_t his surveillance are_gonsistent_with.IEEE-450. _This refere09p Jgegpmends tha Lthe bat _tery be replaced Jf,13s_gapacity is_below 80* of t he. ma nu f a c t u te r ' s__ r a.t i ng., A _ gap a c i tymot_80 tshows th_atJ heJattpry ratLof.
de.tgri.orat_ioq__is, increasing, even_tf there_is_ ample _ capacity _to meet _the_ load reguirements. _
Thtf riquencylor this,tes t is_normally 60_ months.__If_the Jattery,shows_ signs _of l
e E.eg r ada_t io n,_g r_i f t he_ba t t e ry,ha s_r ea ched 8 51. o f_i t s_s e r vi ce_li f e_ a nd_gapa ci t y is <
10 01 o f_ t ne_ ma nu f a cture r'. s_ ra ting,._t he_f requency=is_ re.duced _t g_12_ mont hs.
(Ipwever,_i.f the_batteryj hg_ws no degradation but__has_r_eached_85tpf. it.s__servige li fAkhL ryquengyJs gn l y, redu ced to 2.4 _ mo n t h s_ f o r _ba t t e r_i e s_t ha t._ re ta i n_2_10_0 ?
f Ot_hLppula c t y t e r', s_ t a$ i n g s., _ _ De_g r a da t i o n.__i s_i ndi ca t e d,_a c cq rd i n g,t g_I E E E - 4 5_0_ _,,
whenJhejatteryJapagity_d; gps b.y mo r e _t han _1 f __rel a t i.ve_t o _ i t.s_ capa c ily_on _t_he 0
EJ2Ei E P1E g rmarige._tes t_ o r_when_it_is1101_below the,manu f actu re r_'s_ rating 2
f E A253 2 fg 3qqires Jhat._each.regquireibattery=chargerJeJapablef = supplying i
a f
the_ connected _ loads whi_le_ maintaining the_batterylull.ymcharged,__This_is based j
l on_the a s s umption t ha t_t he _.ba t te ri.es a re__ f ully_gha rged_ a t_the_ be_gi_nn_ing_o f _a design _ basis,acciden k_and on the_ safety function of_providing. adequate power _fgr t.he design basis _ _acq_ident_ loads.
SR__4,6.2.5 verifies _that_the..Tabl_e. 4._6_-1 Category A battery cell parameters _are consist _ent_with_yendor_ recommendations and_IEEE-450,_whigh_. recommend regular batternjnspec11gnsJ at least once per monthL including _ voltage,_speciQc gravityuand_electrolytej eyel,ol pi1_o ncelis..
=
TheJR__4 6 2J _ye ri fi ca tic __n_ tha t_ th_e average t empe ra tu re. o f_r ep re s en ta t i.ve _ce lls 3
2 is 2_6 0Li s.__g_g n s i s _t e n t_wi t h__ a _r e comme nda t i o n__g.f _.I E EE _4 5_0,_wh i c h_s t a t e s _t ha t_ t he tempe ra t_u re__g f el ect tglytes_in_ rep res.enta tive _g_ ells _(_~ 10
- o f_ al.l_gonn_ected_ gell.s l i
shouli be_ determined _on a_ quarterly basis L_oge r, tja nJo rma l_tempe ra tu_re s_a c t _t o l
illhibil gr_ reduce.. battery,c_apacity y hls s,urveillange_ ensures thal the_gperating w
Eemperatures_ remain within_an_ag_geptable_ operating _ range._ This_ limit _is_ base.d_on manufagry ter reegmmendations 1
=
$_4 $ 32 d=yepilies J hal__t_he_ Table d.6;1_ Category B battery cell, parameters
/
are gpns is tent _ with_ vendor _reggmmenda tions. and,_I_EEE-4 50, whi.gh recommend _ regular bat W yJ nspepiip_ns= {a t_Jea s E=pnge pe r.qua r te rLi n_g_l udi ng V,o l tage,_ sp_e c,1 f ig u
=
gravity,J nd.elec_trolyte level _o f _ ea ch _gonne_g t ed__ cell. __In _ addi tion,_ wi thin _2 4 l
hoyu Es afjpq=a= altepyJ ischar,ggjo_< J10_y_gr a ba_ttery overcharge _to 1 150_V, b
=
I the.. battery must be_ demons _trated._to meet Ca t e_go ry,_B_limi t s. __T ra ns ie.nt s, _s u gh a s motor _ s ta rtinglransi_entsghich may=mpmenta rilygause_ battery _ voltage _to drop _to g_jl0_.E gg_ opt cgastit_ute a_ battery _ discharge provided... battery terminal voltage
=
and, float current return to..prentrangent_ values _.
This 1,n sp3c tio n_i s_als o gonsis tent _ wi th J EEE-4 50,_wh.ich _reep.mmends_special_inspegtions_f ol_lgwing_ a_ se_v_er;e e
discha,rge_gr_pvercharge,_to ensure that no signifi.gant_ degradation _of_the_ battery ocpurs_as_a_c.pnsequence_of_such disgharge_or_overc,h,arge h
1 Tablg_4 );1_JelipealgsJ he limi t s,_gn elge t rglytg _ level,_ cell _ f_ loa t_vo l_t age,__ a nd 1
speci fig..__ gravity _ f o r_th ree_di f f e r_ent_.ca tegg rie_s. _ _The meaning gf eagh _ca tego ry is discuss _ed_below.
CagegogL A A fings the_n.9 rma1,p_.ayame te r 1imit __fgr_,each designated pilo t_ gell _in eagh_pagiggy y hnc311s selected asJilot_ cells are_those whose. temperature, Amendment No. M,M 101
1 4
YRMd9" and Megipolytg spggi fipJ5ayity_ appygximate _the_ s tate of _gha rstqf3hg eniirejap3gry IhgfategqpyJ Jimits specified_ tor ele.gtrolyte_ level _are_ based _on_manufagturer y e gggme gpa yp p s_ a ia r e ggn sj sygn tyi thlh_ggnd a n ge_i rL_,_I E E E-4.5 0,Ji&t h e _e x t r a
.l b.jpgh al_lowance,abgye Jh,e,high,yater legeL indication foL operati_ng, margin _to e
s acgggnt_Jpg_temperaggres anp gharge. effects.__In addition _to.this allowange, tootnotejat to. Table _4.Enl_ permits _the elec t rglyte _ level._to_be_ above._ the 8P"9A.f gp mayipgglevel during,equap zing =gharge,=provided it._is_not o ve r.f l gwi ng.
ID18 L_11E 1 Lensure that the plates 1
suffer _ng_physjca] d mage _and that_ade,quate 3
=
electron _transter_gapability_is_ maintained _in_.the_ event ot_ transient conditions.
I_EEE;451 regommends.that elegtrolyte_, level _ readings should be_made_only_af.te_r the baltery,has been.at_ float _gh rge for aL least,22_ hoyrs.
i TheJ atyggry M imit= pecified for_ float _ voltage _is. 1 2_t l3 V_per_. gell. _This s
e l
value._is based _on __the _ bat te ry_vendo r allowable _ minimum _ cell.vgita_ge_and_on a gecommendation. of_IEEE-450,__which_ states.that_prolon,ged operation ot__gells s 2.1 Q gan_ reduce _the__ life e gpge,t a ngy, oLeel l s...
Th qCateggr,y A ljmit specified f_pg= specific gpagity_Jpr__each_pilst_ cell _is
=
=
k.j a95 This_value_is.charagteristic_of_a c ha rg ed_ge l L wi t h_a de qua t;e__gapa ci t ya Sgggrding,to IEEE-450,_the.spegific, gravity geading Lare based __g_n_a_temperaturg 9 f _22
- FJ2 5 ' CL The.specifi ngravity_ readings _are corrected _for_ actual _ ele.qtrolyte_ temperaturea for eagh l* F 11 dl*CJ above 7 7 ' F j2 5 'Q)1_.lgoint_10. 0011_is added to the reading [
1 point is_ subtracted _for_eagh_3'_F__below 77 F.
The speci.fi_g_grayity of the el e c t rolyt e_ i n__a _ cell _i n c rea s es__ wi t h _a._l os s_g f_ wa te r_due t o_e_1.e_g t rgl ys i s_o r eyappga,gg h Categq1y l defines the_nprmal_ parameter li.mJts__for eagh_ connected _cel k The_ term i
=
icgnnected cell';jxcludes_any_ batte ry_ cell _that_is jumpe re.d.__ou,t_.,
Thngategqgy.B_1imits spegi fiedjo r elect.rolyte__ level _and_ floa t_ voltage _a re_t_h_3 same as_those.spegified_for_Qategory_A a_nd_have_been disgusse_d_abgve.__The Categqry l limit _spycif ed.for_specifig_ gravity jor_ea_qh_connegted_ gell _is 2_ l.t190 with_the average _of,all_cgnnected_ cells._>_l 195._ These_ values _are_ based a
gn_ manufacturer's_regommendations_ _The. minimum sp,eci_fiLgrajijy value_.requi. red fo r each_ cell _ensu res_that_the_ e f f ects_o f_a_ highly _cha rged _o r_ newly _ ins talled cel1 wil Lno,t, mask.overall, degradation of the_._batteryg EdM99ILCde fineSJhe limits foneach, connected _ cell _._ These values,_although l
reduged_,=pgoyid gassurance.that_ sufficient. capacity exists _to_ perform _the intended juncgion and_mai_ntain_a, margin of_ safety Whe n_. a ny_b a t t e rynp a r ame t e r__i s gppside the_ Cat _egory C, limitsu he ass.urance of__suff_icient_capaci_ty J escr_ibed i
t above_no_ longer,_ exists and_the battery _must be declared _ingperablea Tht qhyggpELQ_. lim.its speci fied_f or_ ele _ct rolyte level _(above _the _ top. o f_the R ates and not overflgwing Lensure g at,jhe platss_ suffer no_physicaLdamage_and l
maintain _adequat,e electron J ransfer capabil_ity. _The Gategory Q.limitj o d loa _t 1
XR 1d9ed.s_consistentg ith IEE M 50, which_Jtates_th_at a, cell _ volt _ age,o g.0 M gr.__below,_under_ float _ conditions and_not_causedjy_ elevated._tempgature_gf_the cell,_ indicates _ internal _qell._ problems and_maygequire cell. replacement _.,
m The_Ca t ego ry,C _lipiLo t a ve ra g e _speci f,i c g r a yi_ty 2ilg_9.0_is based _ogmangfacturer l
recqmmendations u__In_ addition _to_that_ limit,_it_is__requireLthat thLspegific
=
gravity _for each connected ce1L must b Lno,less than.0.020 b.el_q nth _e j ve_ rage gf_
=
all_qgnnected cells.
This limit ensures that the effect of a highly _ charge _d,or ng,w ggl Ldoe gnot_ mask _overall.._ degradation of_t.he_ bat.tery3 Foo t no te_s_(bl anddc L_to_ Table __4gl a re, applicable _tg_Ca tego rya B and_Q l
s specifi ngravity y pptngpe Jb(_t %TablL & lg equires_thq abo _ve mentigned 4
correction _for_electrolyth temperature.
This,cu rrent_ p rovi_de_s,,iggene ral, m _n a
Amendment No.
M, 24 101
l l
1 d i.a t i g.p.pf_ =g_vgJa l l. b_a t t e r y Cg nd i t i o n.
The,va l_ue _o f_ 2_ amp _s_._u s e_d _ i n.f oo tno te
)
$E 8
Lc) i s. t he._ ngmina l v.a lue _ f o r fl pa t _ cu r rent _es t abli s hed by_,.th_e _ ba t t e ry vendo r,_a s E?P E".5.e n ti n g = a_. lg l lL ghaf ged..ba t te ry wit h _an, allpwange_ f o_r o.ve rall ba_t tery condition, B"CdR3" O f,.?PeCi f._igmg r a vi t y_ g ra die n t_s=tha t, a r e p r_pduyed._ du ring the,_.recha rging l
i PE95M 5 8,_d? ays,3 (seyeral__ days may occur _while_wa.iting for_the_ specific gravity to ltabilize A,s t a bi l_i ze_d_,cha rge r current i s. a n,a c c ep_t a b_l e a l t e r n a t i ve__.t o s
speci_fic gravitL geasyrg>3nt=for determinin gthe_ state pf charge This pheno.menon __i s _di.s_cus s ed_in I EEE-4 5 0. _ Foot note _(c L to Table __ _4. 6-l_ al_ lows _ t he f1Ra Lcharge. current _to be_used_as an. alternate to_speg.ific_grav_ity for,up _to 7 days _ f_ollpw_ing a ba t te r y rech.a rge Wit.hi_n 1.da.ys y c_h connected celli _s 8P?C i f i CJra vi t_y, mu s t be_ measured,to confirm.t_he, state of _ charge _.Following a mipor, battery _.regharge jsuch as egualizingJ agge that_does_ not;.f ollow a deep h
d t.s cha r ge) spep fic gravit_y, gradient,s.ma rg n o t __ s i g n i._f i ca n t, a n.d. con f.i rmin_g mga su1;engnis, may be._.made i n_,J e s sJ h a nd.d a y s.
T1e_SR 4. 4 3 testing of the emergency lighting is scheduled every 18 months and l
3 1s subject to review and modification if experience demonstrates a more effective l
test schedule.
)
f REFEREllCE j
h FSAR, Section 8 l
1 i
i i
i l
4 i
I Amendment tio. M,M 101