ML20059G020
| ML20059G020 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 09/07/1990 |
| From: | WISCONSIN ELECTRIC POWER CO. |
| To: | |
| Shared Package | |
| ML20059G018 | List: |
| References | |
| NUDOCS 9009120089 | |
| Download: ML20059G020 (4) | |
Text
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- A.2. Under abnormal conditions 4ne1 ding Blich Pignt- et:rtup, one reactor may be. l}
made critical providing the following conditions are met: q
- a. One 345 KV transmission =line is in service; or the gas turbine is-operating,
- b. The 345/13.8 liv and_ the 13. 8/4'.~16 KV station auxiliary transformers
'ssociated with the unit to be taken crit,1 cal'are,in service;.or'the- 1 sociated 13.8/4.16 KV station auxiliary transformer is in: service ,
and the gas turbine is. operating.- '!
- c. Reactor power level is limited to 50% rated power until 2 or_more !
transmission lines are restored to service'.- i
- d. A80 Volt buses 803 and B04- for;the unit to be _ taken critical' are-energized,
- e. 4160 Volt buses A03, A04, A05, and A06=for the unit-to be taken-critical are energized.- j
- f. A fuel supply of 11,000 gallons is available; and both diesel generators are operable. l
- g. =All four batteries and.their associated'DC systems are operable. -
- h. Four battery chargers are operable with one charger carrying the DC .;
loads of each DC main distribution bus. ! B.1 During power operation of one-or both reactors, the requirements lof- l 15.3.7.A.1 may be modified to allow'the following arrangements-of systems. n and components:
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- a. If-the 345 KV lines are reduced to only one,-any: operating reactor (s) ,
must be promptly reduced to, and limited to,- 50% power. If all 345 KV l lines are lost, any operating reactor (s) will be' reduced to supp1'ying ! its auxiliary load, until one or more 345 KV transmission lines are again available. I
- b. If both 345/13.8' KV auxiliary transformers are out of service and only the gas turbine is operating, only one reactor will remain operating !
and it will be limited to 50% power. The second reactor will be placed u. che hot shutdown condition. 9009120089 900907 POR ADOCKO'500g6 P ' Unit 1 - Amendment No. 87 15.3.7 March 1, 1985 l Unit 2 - Amendment No. 92
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- 3. Each diesel generator shall be given anLinspection, at 1. east annually -
4l lowing the manufacturer's recommendations for this class of-stand-by service.. ',
- 4. Each fuel oil- transfer pump shall. be run monthlyt j
~h The above tests will be considered satisfactory if all applicable 1 equipment operates as designed..
'B.. Safety-Related Station Batteries b 1 i
- 1. . Every month the voltage of> each' cell (to the nearest 0.05 volt)', the specific gravity an'd temperature.of a pilot cell in each ' safety-relate'd - -l.
battery and each battery voltage shall; be measured'and recorded. ;
- 2. Every 3 months the specific gravity, the height of electrolyte, and the f amount of water added, for each cell, and the temperature of every l fif th cell, shall be measured and recorded. -{
- 3. At each time data is recorded, new dat'a shall be compared with.old to detect signs of abuse or deterioration. -
- 4. Ex h bett:ry :h:11 b; ;ubjected t: 1;;d test et intervals rece nded by the n=f=tur:r but =t =:= ding fin y=r;. Th; 'l battery velt g; s function Of ti;; : hell b; meniter:d t: ::tabl4h-l th:t th: ::p :ity i: ;ufficient t: ::rry the 10:d: :: . deli =:ted in ,
ISAR Thble 0.2-3 f;r the sp;;ified length ;f _ ti;;;e. All'alectrie:1 crnectien: "m be checked for tight ess.' ,
- 4. Each Safety-Related Station Battery shall tie demonstrated OPERABLE:
- a. At'least once per 18 months (SERVICE' TEST) by verifyi.ng that the battery capacity:is adequate to supply and maintain in OPERABLE status all of the actual ~ or~ simulated emergeticy loads for the design duty cycle.*
i Unit 1 - Amendment No. 15.4.6-2 Unit ? - Amendment No. <
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1 b .' . At least once per 60 months (PERFORMANCE TEST) by verifying that: ! the. battery capacity is at.least.80% 'of the manufacturer's: ' j rating. Thisperformancedischargetest.may.beperformediin; l
. lieu of!th'e battery service test.
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Annual performance discharge tests.of battery capacity shall>be giventto,'any battery that shows signs of degradation or has? reached 85% of the service life expected for'the applicatio'n. , , Degradation-is' indicated.when the battery capacity; drops more than ;
-10%ofrated' capacity:fromitspreviousperformance' test,/orkis below90%ofthemanufacturer's' rating..lWhenperformanceftests u are required, they may-be:performad;in lieu of the bsttery; service ,
- test.*
*ServiceandPerformancetestingtobeginsubsequent.toins'talla'ionofthel t ;.
swing safety-related battery expected by the end of.1992. Basis ' l The tests specified are designed to-demonstrate that the diesel generators will l provide power for operation of equipment. They also assure that the emergency generator system controls and the acntrol systems for the ' safeguards equipment-will function automatically in tne event' of a l'ossiof'all normal! ACLstation service power. 7 The testing frequency specifisd will-be often enough to identify and correct any ( mechanical or electrical deficiency before it can result'in' a system failure. l The fuel supply and starting circuits and controls are continuously monitored and any faults are alarm indicated. ~ An abnormal . condition in these' systems ! would be signaled without having to place the diesel gen'erators themselves on test. Station batteries will deteriorate with time, but' precipitous failure is q extremely unlikely. The surveillance specified is that which has been demonstrated over the years to provide an indication of a cell becoming
-unserviceable long'before it fails.
15.4.6-3
U -, : If a battery cell: has deteriorated orrif a' connection is loose ~,lthe voltage'
, under load will drop excessively indicating replacement.or maintenance.
L ,; i A Service Test performed at least every 18 months demonstrates adequate battery ) capacity to supply power to loads required during the most demanding duty- i cycle. This design: duty cycle occurs upon a single-unit trip coincident with a loss of all A.C. power. l 4
-A Performance Test conducted at least every 60 months is a constant discharge-rate capacity test which; allows comparison.with the manufacturer's: rating of the battery.. This test is the best indicator of the effect of aging on battery capacity. Provision is made to change this test periodicity to annual when~ the ,
battery is degraded or has reached a point in its service life beyond.which capacity decrease with time is accelerated. Operability is satisfactorily demonstrated by achieving a capacity of at least 80% manufacturer's rating. l l l Reference FSAR, Section 8.2
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