ML20205L117

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Proposed Tech Specs Re Diesel Generators
ML20205L117
Person / Time
Site: Catawba  Duke Energy icon.png
Issue date: 03/24/1986
From:
DUKE POWER CO.
To:
Shared Package
ML20205L116 List:
References
NUDOCS 8604030168
Download: ML20205L117 (12)
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Text

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c 4.8 /. /. za.. C and V D. /. /. za . 5) & eg s g Jigg pg o 3/4.8 ELECTRICAL POWER SYSTEMS gg g

$3 ee 3/4.8.1 A.C. SOURCES g 5, $ OPERATING 1 LIMITING CONDITION FOR OPERATION d "d 3.8.1.1 As a minimum, the following A.C. electrical power sources shall be y p# OPERABLE:

t a. Two physically i-dependent circuits between tre of fsite transmission

$cg{ y. network and the Onsite Essential Auxiliary Power System, and b. Two separate and independent diesel generators, each with: NO o 1) 7 A separate day tank contairiing a minimum volume of 4tt* gallons yM of fuel, 

   ,c7                            2)    A separate Fuel Storage System containing a minimum volume of jj'                 % t oo --+495409 gallons of fuel,

[b

3) A separate fuel transfer valve, and
4) A separate 125 VOC battery and charger connected to the diesel
  $g                                    generator control loads.

d9 Q 3 APPLICABILITY: MODES 1, 2, 3, and 4. b'v ACTION: (3 h a. With ssther an offsite circuit - "-- ' n. i. of the above required A.C. electrica power sources inoperable, demonstrate the 

  % {v l%j      o OPERABILITY of the tions 4.8.1.1.la      =-d " . ^ -

maining A.C. sourcef by performing Specifica-er; 7estore -+t- ) within 

                                                                                                ^   ^

1 hour and at least once ' g,, g.5[S o per 8 hours there ' __t -- gffsite circuit W 

                .                12 =-         g=----t       -- to OPERABLE status within 72 hours or )be in e

5c U at least HOT STANDBY within the next 6 hours and in COLD SHUTDOWN { _j g within the following 30 hours. 

   #   I3'
         .n7
b. With one offsite circuit and one diesel generator of the above required A.C. electrical power sources inoperable, demonstrate the 49d OPERABILITY of the remaining A.C. sources by performing Specifica-tions 4.8.1.1.la. = " d ^ -

, J4y+y 1x . 

                                                                                               ?-

least once cer 8 hours thereaftliiTQ7estore at least one of the it within 1 hour and at C+- inoperable u % s to OPERABLE status within 12 hours or be in at d y F -4 s y~ye 3 least HOT STANDBY within the next 6 hours and in COLD SHUTOOWN 4 within the following 30 hours. Restore at least two offsite circuits

  • g *E 1 e and two diesel generators to OPERABLE status within 72 hours from

{dC2 0 the time of initial loss or be in at least HOT STANDBY within the g next 6 hours and in COLD SHUTDOWN within the following 30 hours. J4jy c. With one diesel generator inoperable in additien to ACTIONw b. 

    ,  ,4y                       above, verify that:

d1hj t17

1. All required systems, subsystems, trains, components and devices that depend on the remaining OPERABLE diesel generator as a k!m( E+

source of emergency power are also OPERABLE, and 

 ] 4 (;w?               % diese\
                              % +es+ 1s cega;eed b he coayl<hd reyn&ss d wben 6e in cperalle 9 6e 3                     S'p eci%,3eneemb        R, resbred 6 ora 46ttsW. The (r v.sion.s .4 ef g*                                 kon     3.o. z are no4 applica tie .
   $ $ % CATAWBA - UNITS 1 & 2                                                             3/4 8-1 8604030168 860324 PDR      ADOCK050g4y3 P

A saecessfal +esks) of diesM 3 cnemh>r orenatury p a, %;Ilaua %7w;.aA3 4 8.'t.I. 2a.4) and 4.8.l.l. Za.Shpar form ed udea. -k.c ArJiod sfakne,d' be +h e We#48tE diesel 3enerders scdvsfis ne. dLese.( 3 ene.ru.h 4es-b ELECTRICAL POWER SYSTEMS reguirements of Acxiefl sWemenh a. LIMITING CONDITION FOR OPERATION ACTION (Continued)

2. When in MODE 1, 2, or 3 with a steam pressure greater than 900 (

psig, the steam-driven auxiliary feedwater pump is OPERABLE. 1 If these conditions are not satisfied within 2 hours be in at least HOT STANDBY within the next 6 hours and in COLD SHUTDOWN within the following30hourj. .gl24.f0 un 8

d. Wi of the above(recuired offsite A.C. circuits inoperable, demonstrate the OPERABILITY)ofA 4we- iesel generators by performing Specfication 4.8.1.1.2a.4) hour $2nd :t 1:::t ence ,,m 9 'cu-! t'r::'" unless/withinthe diesel generators are already operating; restore at least one of the inoperable offsite sources to OPERABLE status within 24 hours or be in at least HOT STANDBY within the.next 6 hours. With only one offsite source restored, restore at least two offsite circuits to OPERABLE status within 72 hours from time of initial loss or be in at least HOT STANDBY within the next 6 hours
      ~

and in COLD SHUTDOWN within the following 30 hoursg

e. With.4we3of the above required diesel generators inoperable, demonstrate the OPERABILITY of two offsite A.C. circuits by performing Specifica-tion 4.8.1.1.la within 1 hour and at least once per 8 hours there-after; restore at least one of the inoperable diesel generators to OPERABLE status within 2 hours or be in at least HOT STANDBY within M the next 6 hours and in COLD SHUTDOWN within the following 30 hours.

Restore):t 1:::t t:0 diesel generators to OPERABLE status within 72 hours from time of initial loss or be in at least HOT STANDBY within the next 6 hours and in COLD SHUTDOWN within the following 30 hours.

f. With a diesel generator operating at greater than 5750 kW, within 1 hour reduce the diesel generator output to less than or equal to 5750 kW.
g. With the Cathodic Protection System inoperable, restore the System to OPERABLE status within 10 days or prepare and submit a Special Report pursuant to Specification 6.9.2 outlining the cause of the inoperability and the plans for restcring the System to OPERABLE.

SURVEILLANCE REQUIREMENTS 4.8.1.1.1 Each of the above required independent circuits between the offsite transmission network and the Onsite Essential Auxiliary Power System shall be:

a. Determined OPERABLE at least once per 7 days by verifying correct breaker alignments, indicated power availability, and
b. Demonstrated OPERABLE at least once per 18 months d ri,; .J. ti - by transferring (manually and automatically) unit power supply from the normal circuit to the alternste circuit.

4.8.1.1.2 Each diesel generator shall be demonstrated OPERABLE:

a. In accordance with the frequency specified in Table 4.8-1 on a STAGGERED TEST BASIS by:
1) Verifying the fuel level in the day tank, CATAWBA - UNITS 1 & 2 3/4 8-2

i 

              -                                                                                l ELECTRICAL POWER SYSTENC SURVEILLANCE REQUIREMENTS (Continued)
 ,                   2)   Verifying the fuel level in the fuel storage tank, 4
 '                   3)   Verifying the fuel transfer valve can be operated to allow fuel to be transferred from the storage system to tne day tank,
4) Verifying the diesel starts from ambient condition and accJ 1erates to at least 441 rps in less than or equal to 11 seconds.*A The generator voltage and frequency shall be 4160 + 420 volts and 60 + 1.2 Hz within 11 seconds after the start signal.

The diesel generator shall be started for this test by using one of the following signals: a) Manual, or b) Simulated loss of offsite power by itself, or c) Simulated loss of offsite power in conjunction with an ESF Actuation test signal, or d) An ESF Actuation test signal by itself.

5) Verifying the generator is synchronized, loaded to greater than or equal to 5600 kW but less than or equal to 5750 kW in less than or equal to 60 seconds, aad operates for at least 60 minutes, and -
6) Verifying the diesel generator is aligned to provide standby power to the associated emergency busses.
b. At least once per 31 days and after each operation of the diesel where the period of operation was greater than or equal to 1 hour by checking for and removing accumulated water from the day tank;
c. At least once per 31 days by checking for and removing ' accumulated water from the fuel oil storage tanks; i d. By verifying that the Cathodic Protection System is OPERA 8LEkby l verifying:
1) At least once per 60 days that cathodic protection rectifiers are OPERABLE and have been inspected in accordance with the manufacturer's inspection procedures, and
2) At least once per 12 months that ' adequate protection from corrosion is provided in accordance with manufacturer's inspection procedures.
e. By sampling new fuel oil in accordance with ASTM-D4057 prior to addition to storage tanks and:

kTh; C;th;di ar te:ti:n 0:'= :::d ;;t be 0?CMOLE . Q .T;... Jo .. 1, IE k"The diesel generator start (11 sec.) from ambient conditions shall be performed at 1enst once per 184 days in these surveillance tests. All other engine starts for the purpose of this surveillance testing may be preceded by an engine prelube period andhr other warmup procedures recommended by the manufacturer so that mechanical stress and wear on the diesel engine is minimized.- CATAWBA - UNITS 1 & 2 3/4 8-3 L _ -

4 E ,s--i- A _ d 4 _ ta i ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

1) By verifying in accordance with the tests specified in ASTM-0975-81 prior to addition to the storage tanks that the sample has:

a) An API Gravity of within 0.3 degrees at 60*F, or a specific gravity of within 0.0016 at 60/60*F, when compared to the supplier's certificate, or an absolute specific gravity at 60/60*F of greater.than or equal to 0.83 but less than or equal to 0.89, or an API gravity of greater than or equal to 27 degrees but less than or equal to 39 degrees; b) A kinematic viscosity at 40*C of greater than or equal to

1.9 centistokes, but less than or equal to 4.1 centistokes (alternatively, Saybolt viscosity, SUS at 100*F of greater than or equal to 32.6, but less than or equal to 40.1),
if gravity was not determined by comparison with the supplier's certification; .

c) A flash point equal to or greater than 125'F; and d) A clear and bright appearance with proper color when tested in accordance with ASTM-D4176-82.

2) By verifying within 30 days of obtaining the sample th&t the other properties specified in Table 1 of ASTM-D975-81 are met when tested in accordance with ASTM-0975-81 except that the analysis for sulfur may be performed in accordance with ASTM-D1552-79 or ASTM-D2622-82.

l f. At least once every 31 days by obtaining a sample of fuel oil in j accordance with ASTM-D2276-78, and verifying that total particulate !- contamination is less than 10 mg/ liter when checked in accordance with ASTM-D2276-78, Method A;

g. At least once per 18 months t ' 6 i t % by:

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1) Subjectingthedieseltoaninspection/Enaccordancewith procedures prepared in conjunction with its manufacturer's recommendations for this class of standby service;
2) Verifying the generator capability to reject a load of greater than or equal to 825 kW while maintaining voltage at 4160 1 420 volts and frequency at 60 1 1.2 Hz;
3) Verifying the generator capability to reject a load of greater than or equal to 5600 kW but less than or equal to 5750 kW without tripping. The generator speed shall not exceed 500 rpm during and following the load rejection; y g
4) Simulatingaloss-of-offsitepowerbyitself,[nd:

a) Verifying deenergization of the emergency busses and load shedding from the emergency busses, and CATAWBA - UNITS 1 & 2 3/4 8-4 

,         ELECTRICAL POWER. SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) b)     Verifying the diesel starts on the auto-start signal,
;                                         energizes the emergency busses with permanently connected loads within 11 seconds, energizes the auto-connected emergency (accident) loads through the load sequencer and operates for greater than or equal to 5 minutes while its generator is loaded with the emergency loads. After ener--

gization, the steady-state voltage and frequency of the emergency busses shall be maintained at 4160 1 420 volts and a3 1 1.2 Hz during this test.

5) Verifying that on an ESF Actuation test signal, without loss of-offsite power, the diesel generator starts on the auto-start signal and operates on standby for greater than or equal to 5 minutes. The generator voltage and frequency shall be at 4160 1 420 volt; and 60 1 1.2 Hz within 11 seconds after the -

auto-start signal; the steady-state generator voltage and frequency shall be maintained within these limits during this. , test; '

6) Simulating a loss-of-offsite power in conjunction with an ESF Actuation. test signal, and Jgin3 skymn; ,

a) Verifying deenergization of the emergency busses and . load shedding from-the emergency busses; b) Verifying the diesel starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 11 seconds, energizes the auto-connected emergency (accident) loads through.the load sequencer and operates for greater than or equal to 5 minutes while its generator is loaded with the emergency loads. After energization, the steady-state voltage and fraquency of l the emergency busses shall be maintained at 4160 1 420 l volts and 60 1 1.2 Hz during this test; and l c) Verifying that all automatic diesel generator trips, except engine overspeed, low-low lube oil pressure, generator differential, and the 2 out of 3 voltage controlled overcurrent relay scheme, are automatically l . bypassed upon loss of voltage on the emergency bus , .,hdd*D concurrent with a Safety Injection Actuation signal. 3

7) Verifying the diesel generator operates for at least 24 hours.

The diesel generator shall be loaded to greater than or equal to 5600 kW but less than or equal to 5750 kW. The generator voltage and frequency shall be 4160 + 420 volts and 60 + 1.2 Hz within l 11 seconds after the start signal; the steady-state generator i voltage and frequency shall be maintained within these limits t l CATAWBA - UNITS 1 & 2 3/4 8-5 i 

      ~~           .,    . - - - -    ,
                                                                    ,  ,,,,n,

[ I . s N* ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) during this test. Within 5 minutes after completing this

  • 24-hour test, perform Specification 4.8.1.1.2g.6)b);*

3 J c;e3 sh +Jewn,

8) Verifying [thattheauto-connectedloadstoeachdiesel generator do not exceed 5750 kW; Juring s k + J. w n ,
9) Verifying [tbedieselgenerator'scapabilityto:

a) Synchronize with the offsite power source while the generator is loaded with its emergency loads upon a f simulated restoration of offsite power, b) Transfer its loads to the offsite power source, and c) Be restored to its standby status. Jona shu%wo ,

10) Verifying [tbatw)iththedieselgeneratoroperatinginatest mode, connected to its bus, a simulated Safety Injection signal overrides the test mode by: (1) returning the diesel generator' to standby operation, and (2) automatically energizing the emergency loads with offsite power; -
11) Verifying that the fuel transfer valve transfers fuel from each fuel storage tank to the day tank of each diesel via the in-stalled cross-connection lines;
12) Verifying that the automatic load sequence tinier is OPERABLE with the interval between each load block within the tolerances

! given in Table.4.8-2; l 13) Verifying that the voltage and diesel speed tolerances for the l accelerated sequencer permissives are 92.5 i 1% and 98 + 1%, respectively, with a minimum time delay of 2 t 0.2 s; and

14) Verifying that the following diesel generator lockout features prevent diesel generator starting only when required:

a) Turning gear engaged, or l b) Maintenance mode. 

    *If. Specification 4.8.1.1.2g.6)b) is not satisfactorily completed it is not necessary to repeat the preceding 24-hour test. Instead, the diesel generator may be operated at greater than or equal to 5600 kW but less than or equal to 5750 kW for 1 hour or until operating temperature has stabilized.

l CATAWBA - UNITS 1 & 2 3/4 8-6

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

h. 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 generatcrs accelerate to at least 441 rpm in less than or equal to 11 seconds; and
i. At least once per 10 years by:
1) Draining each fuel oil storage tank, removing the accumulated sediment and cleaning the tank using a sodium hypochlorite solution or its equivalent, and
2) Performing a pressure test of those portions of the diesel fuel oil system designed to Section III, subsection ND of the ASME Code at a test pressure equal to 110% of'the syster design pressure.
3) Performing tank wall thickness measurements. The resulting data shall be evaluated and any abnormal degradation will be justified or corrected. Any abnormal degradation will be documented in a report to the Commission.

4.8.1.1.3 Reports - All diesel generator failures, valid or non-valid, shall be reported in a Special Report to the Commission pursuant to Specification 6.9.2 within 30 days. Reports of diesel generator failures shall include the informa-tion recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revi-sion 1, August 197,7. -If th: TMer f f:ihr:: in th: h:t 1^^ ;; lid te;t; G., 

   =a-       a"
                 !::r -it biri:) i: ; rect:r then er w el to 7, Um wpui 6 .;mli t,e reaa!:::nt:d t iac'"& th: ;dditienal i fe. _ ti:: 7::ur.d;d ' ":; !:tery
    :: ' t i:: C.3.5 Of 9 ;rhtery Cuid: 1.1^ , "evisien 1, Auvu n i A 4.8.1.1.4 Diesel Generator Batteries - 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 electrolyte level of each battery is at or above the low mark and at or below the high mark, i
2) The overall battery voltage is greater.than or equal to 125 volts

! on float. charge, and

3) The individual cell voltage is greater than or equal to l

1.36 volts on float charge.*

b. At least once per 92 days and within 7 days after a battery discharge with battery terminal voltage below 110 volts, or battery overcharge with battery terminal voltage above 150 volts, by verifying that:
1) There is no visible corrosion at either terminals or connectors, and
   *Two different cells shall be tested each month.

CATAWBA - UNITS 1 & 2 3/4 8-7

da e e.s on N1 Me. ELECTRICAL POWER SYSTEMS I SURVEILLANCE REQUIREMENTS (Continued)

2) The average electrolyte temperature of six connected cells is above 60*F.
c. At least once per 18 months by verifying that:
1) The batteries, 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, free of corrosion and coated with anticorrosion material in Lccordance with manufacturer's recommendations,
3) The cell-to-cell pole screws torque setting is 14.5 2 0.5 ft 1bs,
4) The battery charger will supply at least 75 amperes at a minimum of 125 volts for at least 8 hours, and
5) The battery capacity is adequate to supply and maintain in OPERABLE status its emergency loads when subjected to a battery service test. The battery shall supply a current of greater than or equal to 171.6 amps for the first minute and a current of greater than or equal to 42.5 amps for the remaining 119 minutes, while maintaining a terminal voltage of greater than or equal to 105 volts,
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. Once per 60 month interval, this performance discharge test may be performed in lieu of the battery service test.*
e. At least once per 18 months, during shutdown, by giving performance discharge tests of battery capacity to any battery that shows signs of degradation or has reached 85% of the service life expected for the application. Degradation is indicated when the battery capacity drops more than 10% of rated capacity from its average on previous perfonnance tests, or is below 90% of the manufacturer's rating.
     "First test to be conducted within 60 months following OL issuance date.

CATAWBA - UNITS 1 & 2 3/4 8-8 i

TABLE 4.8 DIESEL GENERATOR TEST SCHEDULE NUMBER OF FAILURES IN LAST 100 VALIO TESTS

  • TEST FREQUENCY
                       <IY                                       At least once per 31 days y a5                                    At least once per X days X                                       At lee:t Once pt-K                                          At leest ence per 3 deys-Nan 8EA or r,<wers M LAST 2.0 VA Ub    RESTS M 41                                                         .

B 2. ** gdsfxr FROM A/E)Cp 6 P 

     ' Criter d r determi ~          number of f     ures and num      of valid tests hall       ~\

be accordance h Regulator sition C.2.e Regulatory Guid .108, 1 vision 1, A ust 1977, whe the last 100 ts are determi on a per nuclear u ' basis. For rposes of thi chedule, only v d tests cond ed after completion the preopera nal test requir nts of Regul ry Guide -

1.10 , Revision 1 ugust 1977, s 1 be included he computat j

st 100 vali ests." of the[ /f CATAWBA - UNITS 1 & 2 3/4 8-9

f0 

         -ptd5             y/,91%#

Qfl b v sA 

      ? Criteria for determining number of failures and number of valid tests shall be in accordance with Regulatory Position C.2.e of Regulatory Guide 1.108, but detamined on a per diesel generator ba horpurposesofthisschedule,onlyvalidtestsconducted after the completion of the preoperational test requirements of Regulatory Guide 1.108, Revision 1, August 1977, shall be included in the computation of the
   *14s4 to/soo valij +.sfs.
  • For the purposes of determining the required test frequency, the previous test failure count may be reduced to zero if a complete diesel overhaul to like-new condition is completed, provided that the overhaul including appropriate post-maintenance operation and testing, is specifically approved by the manu-facturer and if acceptable reliability has been demonstrated.

criterion 7all be the successful completion of 14 consecutive tests in aThe reliability single series. Ten of these tests shall be in accordince with the routine Surveillance Requirement 4.8.1.1.a 4)and 4.8.1.1.2.a R four tests, in accor-dance with the 184-day testin 4.8.1.1.2.a 4)and 4.8.1.1.a $g requirement of Surveillance If this criterion Requirements is not satisfied during the first serias of tests, any alternate criterion to be used to transvalue the failure count to zero requires NRC approval. 

**The associated test frequency shall be maintained until seven co'nsecutive failure free demands have been performed and the number 'of failures in the last 20 valid demands has been reduced to 7 ss than or equal to one.

ELECTRICAL POWER SYSTEMS A.C. SOURCES SHUTDOWN LIMITING CONDITION FOR OPERATION 3.8.1.2 As a minimum, the following A.C. electrical power sources shall be OPERABLE: a. One circuit between the offsite transmission network and the Onsite Essential Auxiliary Power System, and

b. One diesel generator with: 4/70
1) A day tank containing a minimum volume of 4082 gallons of fuel,
2) A fuel storage system containing a minimum volume of 6 gallons of fuel, t 77, t oo
                 .3)  A fuel trans/er valve, and
4) A 125 VDC battery and charger connected to the diesel generator '

control loads. - APPLICABILITY: MODES 5 and 6. ACTION: With less than the above minimum required A.C. electrical power sources OPERABLE, immediately suspend all operations involving CORE ALTERATIONS, positive reactivity changes, movement of irradiated fuel, or crane operation with loads over the fuel storage pool, and within 8 hours, depressurize and vent the Reactor Coolant System through at least a 4.5 square inch vent. In addition, when in MODE 5 with the Reactor Coolant loops not filled, or in MODE 6 with the water level less than 23 feet above the reactor vessel flange, immediately initiate corrective action to restore the required sources to OPERABLE status as soon as possible. SURVEILLANCE REQUIREMENTS 4.8.1.2 The above required A.C. electrical power sources shall be demonstrated OPERABLE by the performance of each of the requirements of Specifications 4.8.1.1.1, 4.8.1.1.2 (except for Speci fication 4.8.1.1.2a. 5), 4.8.1.1. 3, and 4.8.1.1.4. CATAWBA - UNITS 1 & 2 3/4 8-11 ~ 

                  %1 bM kc 3                   3/4.8 ELECTRICAL POWER SYSTEMS
        \u$
       .v Q                    BASES 4ei dW &e                    3/4.8.1, 3/4.8.2 and 3/4.8.3 DISTRIBUTION A.C. SOURCES, D.C. SOURCES, and ONSITE POWER

( 4 fywoYE The OPERABIL-ITY of the A.C. and D.C power sources and associated distribu-tion systems during operation ensures that sufficient power will be available j y 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 

      ,b g ,                  the facility. The minimum specified inciependent and redundant A.C. and 0.C.
               -2             power sources and distribution systems satisfy the requirements of General 9UA 4                       Design Criterion 17 of Appendix A to 10 CFR Part 50.

4 30i The ACTION requirements specified for the levels of degradation of the 

       }Dy                    power sources provide restriction upon continued facility operation commensurate 3.,4 g                 with the level of degradation. The OPERABILITY of the power sources are e          _

consistent with the initial condition assumptions of the safety analyses and y g 5 are based upon maintaining at least one redundant set of onsite A.C. and D.C. g ., power sources and associated distribution systems OPERA' M ng accident ajo conditions coincident with an assumed loss-of-offsite i s. ' 11e failure 

     'IUg*-_"c               of the other onsite A.C. source. The Acc. and D.C. source as we out-of-service times are based on Regulatory Guide 1.93, " Availability U ectrical Dk3 es 7, Power Sources," December 1974. When one diesel generator is inope is an additional ACTION requirement to verify that all required syst i,
                                                                                                         -le, there ie &5                    subsystems, trains, components and devices, that depend on the remaining
     ~ j 'vc                 OPERABLE diesel generator as a source of emergency power, are also OPERABLE, and that the steam-driven auxiliary feedwater pump is OPERABLE. This require-
    ' PJ g                   ment is intended to provide assurance that a loss-of-offsite power event will fQ K jo                       not result in a complete loss of safety function of critical systems during the period one of the diesel generators is inoperable. The term, verify, as ed            used in this context means to administratively check by examining logs or yMj eq other information to determine if certain components are out-of-service for maintenance or other reasons. It does not mean to perform the Surveillance e p ,e          '

Requirements needed to demonstrate the OPERABILITY of the component.j k  %~ The OPERABILITY of the minimum specified A.C. and 0.C. power sources and 

    , W, d E D (1)
                     <s associated distribution systems during shutdown and refueling ensures that:

the facility can be maintained in the shutdown or refueling condition for 

    '3 h ,#'Jh extended     bility is availabletime periods,    and (2) for monitoring  and sufficient maintaininginstrumentation the unit status, and control capa-ckd5j                           The Surveillance Requirements for demonstrating the OPERABILITY of the (3* diesel generators are in accordance with the recommendations of Regulatory i         ,             Guide 1.9, " Selection of Diesel Generator Set Capacity for Standby Power
      *E 4.:E t         .e.

Supplies," March 10, 1971, 1.108, " Periodic Testing of Diesel Generator Units 

      ! $ 'g                Used as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1, M t f g August 1977, Regulatory Guide 1.137, " Fuel-Oil Systems for Standby Dies 2.'    E 3 a the Reliability of Diesel Generators at Catawba, August 14, 1984 g any otheF' 3 A              metallic structures (building, new or modified piping systems, conduits) are T                placed in the ground near the Fuel Oil Storage System or if the original system 6 ;f 7I {o is modified, the adequacy and frequency of inspections for the Cathodic Protec-N v g I tion System shall be reevaluated and adjusted in accordance with the manufac-fi  turer's recommendations.

aid fen.c;c Leg 39.g,5, ~ pcop,3 ,f 3,gp 4,gn, g3 fyg,,7, CATAWBA - UNITS 1 & 2 w ** 8 3/4 wsa8-1 

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          - - - .                      ._- _ _                _}}
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