Text

Amends 173 & 176 to Licenses DPR-44 & DPR-56,respectively, Changing Existing Surveillance Requirements & Add Additional Surveillance Requirements for EDGs
	ML20035C478
Person / Time
Site:	Peach Bottom
Issue date:	03/25/1993
From:	Chris Miller; Office of Nuclear Reactor Regulation
To:	;
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ML20035C479	List: ML20035C478;
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	NUDOCS 9304080016
	Download: ML20035C478 (50)
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3' UNITED STATES E-NUCLEAR REGULATORY COMMISSION

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W ASHINGToN, D.C_20555 N.v..../

i PHILADELPHIA ELECTRIC COMPAN(

PUBLIC SERVICE ELECTRIC AND GAS COMPANY I

DELMARVA POWER AND LIGHT COMPANY ATLANTIC CITY ELECTRIC' COMPANY DOCKET N0. 50-277 PEACH BOTTOM ATOMIC POWER STATION. UNIT NO.'t j

AMENDMENT TO FACILITY OPERATING LICENSE

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~ Amendment' No'.~ 173 j

License No._DPR-44i

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The Nuclear Regulatory Commission (the Commission)jas' found that:

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'A.

The application for amendment by Philadelphia. Electric _ Company, et.

al. _(the licensee) dated January 31, 1992, as supplemented by letters?

1 dated April 28, 1992, June-22, 1992,- November 9, 1992, and January.8 -

't 1993, complies with the standards and requirements'of the-Atomic Energy Act of 1954, as' amended (the Act)', and the: Commission's rules' i

and' regulations set forth in 10 CFR Chapter l'

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B.

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

i' Commission-i C.

There is reasonable assurance (i)~ that the activities authorized.by.

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this amendment can be conducted without: endangering the health and' j

safety of the public, and (ii) that-such activities will.be conducted:

-j in compliance with the Commission's regulations,-

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.. f D.

TheissuanceofthisamendmentwillnotbEinimical-tothecommon

'j defense and security or.to the health or' safety of the public; 'and' j

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E.

The issuance of this amendment is in accordance with'10 CFR Part 51 of the Commission's-regulations and_ all applicableL requirements have been

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satisfied.

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2.

Accordingly, the license-is amended by changes to the Technical _ _

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-Specifications as indicated in the attachment to this license amendment,,

and paragraph:2.C(2) of Facility Operating License No. DPR-44 is hereby-amended to read as follows.

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9304090016 930325 t

PDR -ADOCK O 2

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i (2) Technical Specifications The Technical Specifications contained in ' Appendices A-and B, as.

revised through Amendment No.173, are hereby incorporated in.the license.

PECO shall operate the facility in accordance with the Technical Specifications.

3.

-This' license amendment is effective as of its date'of issuance and shall.

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be implemented within 30 days of the date of. issuance.

FOR THE NUCLEAR REGULATORY COMMISSION

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-f hc 11] h d 2

Charles L. Miller,. Director Project Directorate I-2 Division of. Reactor Projects - I/II i

Office of Nuclear Reactor Regulation Attachment.

3 Changes to the. Technical Specifications l

t Date of Issuance: March 25, 1993

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i ATTACHMENT TO LICENSE AMENDMENT NO.173 FAClllTY OPERATING LICENSE NO. DPR-44 DOCKET NO. 50-277 l

Replace the following pages of the Appendix A Technical Specifications with i

the enclosed pages. The revised areas are indicated by marginal lines.

Remove Insert 67 67

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72 72 r

132 132 132a 217 217 218 218 218a 218a 218b 218b 218c 218c l

218d

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218e 218f

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2189 218h 5

218i 218j j

219 219 l

220 220

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220a 220a 220b

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222 222 223 223 l

224 224

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t PBAPS Unit 2 TABLE 3.2.0 INSTRUMENTATION TilAT THlTI ATES OR CONTROLS Tile CORE AND CONTAINMENT C00LlHG SYSTEMS flinimum No.

Number of instru-

.of Operable Instrument Trip function Trip level Setting ment Channels Pro-Remarks Cnanncis Pcr vided by Design

,lrip $vstem (1)

.2 Core Spray Pump 6 +/ l sec.

4 timers All pumps-loss of offsite power only Start Timer 13 sec. +/-7% of setting 2 timers A&C pumps-offsite power available 23 sec. +/-7% of setting 2 timers B&D pumps-offsite power available 1 per 480V Emergency 3 +/-0.5 sec.

4 timers All timers - loss of 4kVbus(7) load Center Timer offsite power only 8

2 LPCI Pump Start 2 sec. +/-7% of setting 4 timers LPCI pumps A&B l$

Timer (Four Pumps) 8 sec. +/-7% of setting 4 timers LPCI pumps C&D 1

ADS Actuation 90</=t </=120 2 timers In conjunction wit'h Low Reactor Water.Leve.1,liigh Timer seconds Drywell Pressure and LPCI or Core Spray Pump running l

interlock, initiates ADS.

k 2

ADS Bypass Timer

B < /=t </=10 4 timers in conjunction with low reactor water 1cvel, bypasses U

minutes high drywell pressure k

initiation of ADS.

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,E 2

RHR (LPCI) Pump 50 +/- 10 psig 4 channels Defers ADS actuation pending confirmation of Discharge Pressure Low Pressure Core Cooling

.O interlock system operation (LPCI Pump running interlock).

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g 2

Core Spray Purro 185 +/- 10 psig 4 channels Defers ADS actuation pending confirmation of low

y Discharge Prenur e Pressure Core cooling interlock system operation (Core Spray

' Pump running interlock).

Ef fective when nxxlification associatetl. with this ametximent is complete.

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Unit 2 PBAPS

-NOTE 5 FOR TABLE 3.2.B 1.

Khenever any CSCS subsystem is required by Section 3.5 to be operable, there shall be two operable trip systems.

If-the first column cannot be met for ona I

of the trip-systems, that trip system shall be placed in the tripped condition or the reactor shall be placed in the Cold Shutdown Condition within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

f 2.

Close isolation valves in RCIC subsystem.

~i 3.

Close isolation valves in HPCI subsystem.

4.

Instrument set point corresponds to 378 inches above vessel zero.

l S.

HPCI has only one trip system for these sensors.

6.

With the number of OPERABLE channels less than requ' ired by the Minimum OPERABLE -

l Channels per Trip System requirement, place at least one inoperable channel in the tripped condition within one hour or declare the RCIC system inoperable.

k 7.

The failure of a 480V Emergency Load Center timer could result in the failure of a 480V Emergency Load Center to re-energize following the loss of one or both offsite sources.

Therefore, Technical Spet.ification 3.9.B.7 will apply when a 480V Emergency Load Center timer is not operable.

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, Amendment No. III, II3,173 I

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Unit 2 i

PBAPS LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS i

3.5.F Minimum Low Pressure Coolino 4.5.F Minimum tow Pressure Availability Coolino Availability i

1.

Deleted 1.

Deleted 4

2.

Any combination of inoperable components in the core and containment cooling systems shall not defeat the capability of the remaining operable components to fulfill the cooling functions.

~3.

When irradiated. fuel is in the reactor vessel and the reactor is in the Cold Shutdown Condition, both core spray systems, the LPCI t

and containment cooling systems may be inoperable, provided no work is being done which has the potential for draining the reactor vessel.

a.

During a refueling outage, fuel and LPRM removal and replacement may be performed provided at least one of the following conditions below is satisfied:

a.

Both core spray systems and the LPCI system shall be operable except that one core spray system or the LPCI system may be inoperable for a period of thirty days, or b.

The reactcr vessel head is i

removed, the cavity is flooded, the spent fuel pool gates are removed, and the water level is maintained at least 21 feet over the top of irradiated fuel assemblies seated in the spent fuel storage pool racks and no work is being performed which l

t has'the potential for draining the reactor vessel.

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-132 Amendment no. 168, 173-

Unit 2 --

'FBAPS LIMITING CONDITIONS FOR'0PERATION SURVEILLANCE REQUIREMENTS 3.9 AUXILIARY ELECTRICAL SYSTEM 4.9 -AUXILIARY ELECTRICAL SYSTEM Applicability:

Applicability Applies to the auxiliary Applies to the periodic electrical power system.

testing requirements of the auxiliary electrical Objective:

systems.

To assure an adequate Objective:

supply of electrical power for operation of those Verify the operability systems required for. safety.

of the auxiliary-electrical system.

Specification:

A.

Auxiliary Electrical A.

Auxiliary Electrical Ecuicment Ecuipment The reactor shall not be made 1.

Diesel Generators and critical unless all of the following Offsite Circuits conditions are satisfied:

1.

Two physically independent 1.

Each of the required circuits between the offsite independent circuits transmission network and between the offsite the onsite Class 1E

' transmission network and distribution system are operable.

'the onsite Class 1E distribution system 2.

The four diesel generators shall be shall be:

operable and there shall be a mimimum of 108,000 gallons of diesel fuel a.

Verified OPERABLE on site.

Each operable diesel at least once per generator shall have:

7 days by verifying correct breake' a.

A separate day tank alignments anc containing a minimum indicated power of 200 gallons of fuel, availability.

b.

A separate fuel storage tank with a minimum of 28,000 gallons of fuel, b.

Demonstrated OPERABLE and at least once per 18 months c.

A separate fuel transfer by transferring, pump.

manually and automatically, the 3.

The unit 4kV emergency buses start-up source and the 480V emergency from the normal load centers are energized.

circuit to the alternate circuit.-

.4.

The four unit 125V batteries and their chargers shall be operable.

-217-Amendment No. N9,173

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PBAPS LIMITING CONDITIDNS FOR OPERATION SURVEILLANCE REQUIREMENTS' I

4.9.A.1 (Continued)

2. Each of the required diesel generators shall.be demonstrated i

OPERABLE:

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In accordance with the frequency specified in 4.9.A.I.2.k by:

1. Verifying.the fuel. level

l in the fuel storage-tank, j

-and the volume of fuel

'i onsite.

2. Verifying the fuel i

transfer pump starts and

-i' transfers fuel from the storage system to the day' l

fuel tank.

3. Verifying that-the diesel a

can start and.

gradually ~ accelerate to-synchronous speed with generator voltage and frequency at 4160 i 410; volts and 60 2 1.2 HZ.

.4. Verifying that the diesel can be synchronized, gradually loaded" to

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anigdicated2400-

.t 2600 kw and can operate with this load for at least 60 minutes.

5. Verifying the diesel generator is aligned to provide standby powerLto the associated emergency busses.

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aThis test shall be conducted in accordance with the manufacturer's recommendaticns regarding engine pre-lube and warmup and, as applicable,' loading and shutdown.

bThis load band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band for special testing, under direct monitoring by the _.

manufacturer or system engineer, or momentary variations due to changing bus loads,shall not invalidate the test.

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-218-Amendment-No. DI,173:

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tinit 2 PSAPS LIMITING CONDITIONS FOR OPERATION

-SURVElll_ANCE REQUIREMENTS 4.9.A.l.2 (Continued) 6.-Verifying the-pressure in all diesel generator air start receivers to be greater than or equal-to 225 psig.

b.

At least once per 184:

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days the diesel generator shall be started" and verified'to accelerate to synchronous speed in-less than.or equal to 10 seconds. The generator voltage and frequency shall reach 4160 + 410 volts and 60 + 1.2 Hz l

within 10 seconds after the start signal. The generator shall-be-9 manually synchronized to its appropriate emergency bus, loaded to an indicated 2400-2600

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b kw in less-than or equal to 60 seconds, and-operated for at least 60 minutes. This test,'if it is performed so it coincides with the testing required by Surveillance Requirement-

'4.9.A.I.2.a.3 and 4.9.A.1.2.a.4, may also-1 serve to concurrently i

meet those requirements as well.

t aThis test shall be conducted in _ accordance with the manuf acturer's f

recommendations regarding engine prelube' and warmup and, as applicable, loading and shutdown.

bThis be.nd :is meant as guidance to avoid routine overloading of the engine.

Loads in excess of.this band for special testing, under. direct monitoring by the manuf acturer or system engineer, or momentary variations due to changing bus loads -

shalt not invalidate the test.

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. Amendment No. 137,173

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~ Unit 2 PBAPS

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' LIMITING' CONDITIONS FOR OPERATION' SURVEILtANCE-REQUIREMENTS 4.9.A.I.2 (Continued)_

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By removing at:rf mulated :

. water:

1. From the day tanks l

least once per.31-

~ days'and after.each' occasion when the.

' diesel is operated for. greater than 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months , and

2. From the main ~ storage tanks at least once per 31 days.

'd.

By sampling new fuel oil l-in accordance with ASTH D4057-81; prior to cddition'to the storage tanks and:

1. By verifying in accordance~with'the tests specified in--

ASTM D975-81 prior to addition to'the.

storage tanks that..

the sample.has:

a) An' API Gravity of within 0.3 degrees-at 60 degrees-F or~

a specific gravity of witnin 0.0016-at 60/60 degrees F

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_when compared to?

the supplier's

. certificate; or an' absolute specific gravity:at'60/60-l degrees.F.of greater than or equal to 0.83 but less than or. equal-to 0.89; or an API Gravity at 60' degrees F of'creater l

'than or equal to-

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27 degrees but' l

1ess than or equal' to 39 degrees i

Amendment No. Y31,- 159,173 l

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Uni: 2.

PBAPS LIMITING CONDITIONS FOR OPERATION' SURVEILLANCE REQUIREMENTS-4.9.A.l.2.d.1 (Continued) b) A kinematic l

viscosity at 40 l

degrees C of

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greater than or

'i equal-to 1.9 centistokes but less than or equal r

to 4.1 centistokes, if.

gravity was not determined by comparison with-the supplier's certification.

c) A flash point equal to or greater than 125 degrees F, and d) A clear and bright appearance with proper color when i

tested in accordance with l

ASTM D4176-82.

2. By verifying within l

31 days of obtaining the sample that the l

other properties specified in Table 1 of ASTM 0975-81 are met when tested in accordance witt.'STM 0975-81 except Inat the analysis for sulfur may be performed in accordance with ASTM 01552-79 or ASTM D2622-82.

a Amendment No. 73I,159,173

-218c-

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i Unit 2+

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.PBAP5_

LIMITING CONDITION FOR' OPERATION SURVEILLANCE REQUIREMENTS 4.9.A.I.2-(Continued) 5

e. At Lieast-once. every 31 days by-obtaining a sample of fuel oil.

q from the. storage' tank in accordance'with ASTM D2276-78, and verifying that total

.l particulate contamination.is less than 10mg/ liter when checked in

.i accordance with ASTM D2276-78,

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Method-A,'except that theLfilters specified in ASTM D2276-78,.

l Sections 5.1.6 and 5.1.7, may-.

.have a nominal pore size.~of up to-three (3) microns.

f. At least once per 18 months by: ~

1. Subjecting the diesel to an inspection in accordance with procedures prepared in

-i conjunction with its -

manufacturer's recomendations j

for this class of standby ~

service.

2. Verifying the diesel generator -

capability,to' reject a load of-greater than or equal to that of the'RHR Pump Motor for each diesel generator while maintaining' voltage'withini 4160 + 410 volts and frequency at-60 +.1.2hz.

3. Verifying 'the diesel ~ generator capability to reject'an-indicated load of.2400 kW-2600-1, kW without tripping. 'The I

generator _ voltage shall not exceed'the initial value (4160

+ 410. volts) by more than 660 volts j during~~and:following the load rejection.

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.-218d-Amendment' No.173

9 Unit'2 PBAPS LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 4.9.A.l.2.f (Continued)

4. Verifying that all automatic diesel generator trips except engine overspeed, generator differential over-current, generator ground overcurrent and manual cardox initiation are automatically bypassed upon an ECCS actuation' signal.

5.Verifyingthedieselgenerator operates for at least 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . During the'first 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months of this test, the diesel' generatorshallbeloagedtoan indicated 2800-3000 kW and during the remaining 22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months of this test, the diesel generator shallbeloagedtoanindicated 2400-2600 kW t

6. Verifying diesel generator capability at full load temperature within 5 minutes after completing the 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months teste by starting and loading the diesel as described in Surveillance Requirement 4.9.A.1.2.bandoperatjngfor greater than 5 minutes aThis test shall be conducted in accordance with the manufacturer's recommendations regarding engine prelube and warm-up and, as applicable, loading and shutdown.

bThis band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band for special testing, under direct monitoring by the manufacturer or system engineer, or momentary variations due to changing bus loads shall not invalidate the test.

c!f Surveillance Requirement 4.9.A.l.2.f.6 is not satisfactorily completed, it is not necessary to repeat the preceding 24-hour test.

Instead, the diesel generator may be operated at 2400-2600 kW for 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months or until operating temperature has stabilized prior 1l performing Surveillance Requirement 4.9.A.I.2.f.6.

dPerformance of Surveillance Requirement 4.9.A.l.2.f.6 will not be used to satisfy the requirements of Surveillance Requirement 4.9.A.l.2.b.

-218e-Amendment No.173

un t :, t PBAPS-

O MITING CONDITIONS FOR OPERATION.

SURVEltLANCE REQUIREMENT 5'

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4.9.A.l.2 (Continuec)

7. Verifying that the fuel.tr'ansf er:-

pump transfers fuel-from each' i

fuel storage tank to the' day tank of each diesel via the installed t

cross connection-lines..

J g.

At least once each operating _

cycle by:

1. Simulating a loss-of-o.~fsite.

power by itself, and:

a) Verifying deenergization of

'the emergency busses and' load-3 shedding from the emergency-i busses.

b) Verifying the diesel.

t generator starts". on the auto-start signal, energi2es the emergency busses within_

10 seconds', energizes the permanent and auto-connected loads through the individual i

z load _ timers and operates for greater than or equal to 5 minutes.

'After energization, the steady-state voltage a d frequency of the emergency' i

busses shall be maintained at 4160 + 410 volts and 60 + 1.2 Hz during this test.-

aThis test snall be conducted in accordance with the manuf acturer's recommendations -

regarding engine prelube and warm-up and, as applicable, loading and shutdown.

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-218f-Amendment No.173

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Unit = U.i PBAPS' tlHITING CONDITIONS.FOR OPERATION SURVEll'_ANCE REQUIREMENTS.

. 1, 3

4.9. A.1.2 (Continued):

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-2.

. Verifying that on an'ECCS:

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actuation test signal,.

i without: loss-of-offsiten j

-power,-the~ diesel generator.

' starts" on the auto-start l

signal and. operates for.

j greater than'or-equalL5, minutes. The. generator--

j voltage and frequency shall:

reach 4160 +'410 volts'and 60

-+ 1.2 Hz within 10 seconds-aftertheauto-startsignali.

the' steady state generator.

voltage-and frequency.'shall.

be maintained within these r;

limits during this tes..

3.

Simulating a-loss-of-offsite-

. power in conjunction with an ECCS actuationLtest. signal, and -

i a) Verifying-deenergization:

-l of the emergency busses

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and load' shedding from.thei emergency busses.

j b)'Verifyingthe'digsel generator. starts on

.j the auto-start signal -

l' energizes the emergency.

busses within 10 seconds,-

1 energizes the permanent.-

and auto-connected loads i

through.thecindividual' load timers and operates for greater than or equal:

to 5 minutes.

-After energization,=the steady-state voltage and j

frequency'of.the emergency

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-busses shall be maintained-at 4160 + 410. volts and 60=

1 1.2 Hz during this test.

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.aThis test shall be conducted in accordance with the manufacturer's

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recommendations regarding ' engine prelube and warmup and, as applicable, loading and shutdown'.

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Amendment No.173.

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Unit: 2 PBAPS o

LIMITING' CONDITIONS'FOR OPERATION.-

SURVEILLANCE REQUIREMENTS =

.4.9.A.1.2 (Continued).

4. Verifying the diesel--

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. generator's capability toi a) Sychronize with the 6

offsite power sources.

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.while the-generator.15.

loaded with itst i

emergency loads upon a'

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simulated restoration-1 of offsite power.

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,.b)Transferits'. loads-to' a

the offsite power source, and c).BerestoredtoIits.

.-standby status.

h.

At least once per 10 years or; after any modifications _which'-

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could affect diesel generator.

interdepgndenceby:

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starting. ' all' f our' diesel generators simultaneous's and,

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verifying'that all four diesel generators. accelerate-f to at least 855 rpm in'less than or'e_ qual to^10' seconds..

~i. At least once per.10 years by draining'each fuel oil tank,-

removing'the' accumulated Di sediment and cleaning.theE tank using=a sodium

.hypochlorite or equivalent solution.-

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j..The. fuel oi1~ storage tani l

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. cathodic protection system i

shall be checked as'follcus:

_ j 1.Atleastonceeverytwelveig' months perform altestito l

determine whether the-cathodic' protection:is.

l adequate, and.

-i aThis' test shall be conducted in accordance with the manufacturer's: recommendations.

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regarding' engine prelube and warmup and, as applicable,. loading and:. shutdown, i

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Amendment No. 173

-218h.-

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l Unit 2.

PBAPS L

LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 4.9.A.I.2 (Continued) 2.

At least once every two months inspect the cathodic protection rectifiers.

k.

If the number of failures during l

the last 20 valid demands is less than or equal to 1, the test frequency shall be at least once per 31 days.

If the number of failures during the last 20 valid demands is greater than or equal to 2, the test frequency shall be at least once per 7 days".

1.

All diesel generator failures, valid or non-valid, shall be reported to the Commission in a Special Report within 30 days.

Reports of the diesel generator failures shall include the information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977.

Criteria for deter:1ining the number of failures and number of valid demands shall be d

in accordance with f egulatory Position C.2.e of Regulatory Guide 1.108, but determined on a per diesel generator basis.

eThe associated test frequency shall be maintained until seven consecutive failure free demands have been performed and the number of failures in the last 20 demands have been reduced to one.

For the purposes of determining the required frequency, the previous test f ailure count may be reduced to zero if a complete diesel overhaul to like-new -

condition is completed. This diesel overhaul, including appropriate post-maintenance operation and testing,_ shall be specifically approved by the manufacturer and acceptable i

diesel reliability must be demonstrated. The reliability criterion shall be'the successful completion of 14 consecutive tests. Ten of these tests may be slow' starts in-accordance with Surveillance Requirements 4.9.A.1.2.a.3 and 4.9.A.1.2.a.4 and four tests shal1 be f ast starts in accordance with the Surveillance Requirement 4.9.A.1.2.b.

If this criterion is not satisfied during the first series of tests, any alternate criterion to be used to reset the valid failure count to zero requires NRC approval.

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-2181-Amendment No.173

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'1 PBAPS LIhlTING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 4.9.A.2 Unit Batteries r

a. Every week the specific

_ gravity, the voltage'and temperature of the pilot cell and overall battery voltage shall be measured and logged.

b. EVEry three months the measu'rements shall be made of voltage of each cell to-

' nearest 0.1 Volt, specific gravity of each. cell, and temperature of.every fifth cell. These measurements shall be logged.

c. The station batteries shall be I

subjected to a performance-f test every third refueling outage and a service test during the other refueling outage. In' lieu of the i

performance test every third refueling outage, any battery that shows " signs of degradation or has reached 85%

of its service life" shall be subjected to an annual performance test. The service test need not be performed on the refueling outage during which the performance test was-conducted. The specific gravity and voltage-of each cell shall be determined after.

the discharge and logged.

4.9.A.3 Swing Buses

a. Every two months the swing buses supplying power to the Low Pressure Coolant Injection System (LPCIS) valves shall be tested to assure'that the transfer circuits operate as designed.

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Amendment No.173

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-218j-m-

Unit 2 LIMITING CONDITIONS FOR OPERATION SURVEILLANCE-REQUIREMENTS 3.9.B Operation with Incperable Eouipment 4.9.B. Operation'with inoperable Equipment Whenever the reactor is in Run Mode or Startup Mode with the reactor not in a Cold Condition, the availability of electric power shall be as specified in 3.9.A. except as follows:-

1.

With one offsite circuit required by

1. When it is determined that one.

Specification 3.9.A.1 inoperable, offsite circuit required by_

restore at least two offsite circuits to Specification 3.9.A.1 is OPERABLE status within 7 days or be in inoperable, verify the least HOT SHUTDOWN within the next 12 OPERABILITY of the remaining i

hours and in COLD SHUTDOWN within the A.C. sources by performing following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

Surveillance Requirement 4.9.A.1.1.a within I hour and once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter.

If any of the diesel generators have not been successfully tested within the preceding 24 lsurs, demonstrate OPERABILITY of these diesel generators by performing Surveillance Requirement 4.9.A.1.2.a.3 for one diesel at a time within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months and once per 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months thereafter.

j-2.

With two independent off-site circuits

2. None required by Specification 3.9.A.1 inoperable, continued operation is permissible, previded the four diesel generators and at,sociated emergency busses are operable, all core and containment l

cooling systems are operable and reactor power level is reduced to 25% of the design.

J i

-219-Amendment No. 69, 749, 173

i Unit 2 PBAPS LIMITING CONDITIONS FOR OPERATION-SURVEILLANCE REQUIREMENTS 3.9.B (Continued) l 3.

With one diesel generator' inoperable.

3. When it is determined that' restore the inoperable diesel generator one diesel generator is and associated emergency bus to OPERABLE-inoperable, verify the status-within 7 days or be in at least OPERABILITY of the remaining HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months A.C. sources by performing and in COLD SHUTDOWN within the Surveillance Requirement following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

4.9.A.1.1.a within I hour and once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. Verify within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months that required systems, subsystems, trains -

components, and devices that depend on the remaining diesel generators as a source of emergency power are OPERABLE.

If the diesel generator became inoperable for any reason other than preplanned preventative maintenance, or testing, demonstrate the OPERABILITY of the remaining operable diesel generators by performing Surveillance Requirement'4.9A.I.2.a.3 for one diesel at a time, within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months

and-at least once per 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months thereafter.

i

This test is required to be completed regardless of when the inoperable diesel generator is restored to OPERABILITY for failures that are potentially generic to the -

r remaining diesel generators and for which appropriate alternative testing cannot be designed.

-220-Amendment No. H,173

Unit 2.~

PBAPS i-LIMITING CONDITIONS FOR OPERATION-SURVEILLANCE REQUIREMENTS 3.9.B (Continued) 4.

With one diesel generator and one

4. When it.is determir d-that e

offsite circuit required by one diesel generctor and Specification 3.9.A.1 inoperable, one offsite circuit required restore at least two offsite by Specification 3.9.A.1 circuits or four diesel are inoperable, verify the generators to OPERABLE status OPERABILITY of'the remaining within'72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the time A.C. sources by performing of initial loss or be'in at Surveillance Requirement least HOT SHUTDOWN within the 4.9.A.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN and once'per-8 hours-within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

thereafter. Verify within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months , that. required systems, subsystems, trains, components, and devices that depend on the remaining diesel generators as a source of emergency power are OPERABLE.

If the diesel generator became inoperable for any reason other than preplanned preventative maintenance, or-testing, demonstrate the-OPERABILITY of the-remaining diesel generators by performing Surveillance Requirement 4.9.A.1.2.a.3 for one diesel generator at

-a time, within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months *.

5.

From and after the date that one of the

5. None 125 volt battery systems is made or found

+

to be inoperable for any reason, continued reactor operation is permissible during the succeeding three days within electrical safety considerations, provided repair work is initiated in the most expeditious manner to return the failed component to an operable state, and Specifications 3.5.F and 3.9.B.3 are satisifed.

This test is required to be completed regardless of when the inoperable ' diesel-generator is restored "to OPERABILITY for failures -that are potentially generic' to the remaining -diesel generators and for which appropriate alternative testing cannot be designed.

-220a-Amendment No.13I,173

')

UnM i:

PBAPS

' LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 1

3.9.B (Continued)

J 6.-

-With fuel oil in one of the diesel

6. None generator main storage tanks not available or not in conformance with' Surveillance Requirement 4.9.A.1.2.e, implement the following:

a.

Isolate the main storage tank from the system, with the associated diesel generator being supplied from one of the remaining storage tanks within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , and b.

Establish and maintain a minimum of 108,000 gE'lons of diesel fuel oil in the other three main storage tanks within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , and c.

Sample the fuel oil in the other three main storage tanks and confirm conformance with specification l

4.9.A.l.2.e within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , and d.

Replace the unacceptable fuel oil with acceptable fuel and return the stcrage tank to service within 7 days, or place _the reactor in Cold

+

Shutdown within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

Accelerated testing of the diesel generators is not required.

7.

With one of-the 4kV emergency busses

7. Ncne or 480V emergency load centers required by 3.9.A.3 not energized, declare the associated equipment inoperable and take the appropriate action for that system.

Reenergize the bus within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be r

in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

i amendmont No. TU 173 l

L'ni t 2 PBAPS 3.9 BASES The ger.eral objective of this Specification is to assure an adequate source of electrical power to operate the auxiliaries during plant operation, to operate f acilities to cool and lubricate the plant during shutdown.. and to operate the engineered safeguards following the accident. Two independent power sources from the off-site transmission network and the diesel generators are available. -One off-site source is provided through the 13.2 kV startup regulating transformer switchgear No. 3 supplied from either the No. 343 startup transformer or the startup and emergency auxiliary regulating transformer No. 3.

The other off-site source is provided through the 13.2 kV startup transformer switchgear No. 2 supplied frca the startup and emergency auxiliary transformer No. 2.

The two off-site sources are connected to the on-site Class IE distribution system (which begins with the 4kV emergency buses) by physically independent' circuits.

The dc supply is required for switchgear and engineered safety feature i

systems. Specification 3.9. A states the required availability of at and dc power; i.e., active of f-site ac sources and the required amount of on-site i

at and dc sources. The requirement for a minimum onsite inventory of diesel fuel is based upon an analysis of the time dependent electrical loads on the diesels following an accident. A battery charger is supplied with each of the 125-Volt batteries.

i The No. 2, No. 3 and No. 343 startup transformers and unit auxiliary transformers are each sized to carry 100% of the auxiliary load. If one of the off-site power circuits becomes inoperable, the unit can continue to operate since the unit auxiliary transformer is in service, the other off-site power circuit is available, and the required number of diesel i

generators is operational.

If both of f-site power circuits are inoperable, the reactor power level must be reduced to a value whereby the units can safely reject the load and continue to supply auxiliary electric power to the station.

In the normal mode of operation, the No. 2 startup transformer and either l

the No. 3 or No. 343 startup transformer are energized and four diesel generators are operable. One diesel generator may be allowed out-of-service based on the availability of power from the startup transformer and the f act that three diesel generators carry sufficient engineered safeguards equipment to cover all breaks. With one off-site power circuit and one diesel generator out-of-service, the off-site transmission line corresponding to the operable off-site power circuit must be available.

Upon the loss of one on-site and one off-site power source, power would be available from the other immediate off-site power source and the three operable on-site diesels to carry sufficient engineered safeguards equipment to cover all breaks. In addition to these two power sources, removal of the Isolated Phase Bus " quick" disconnect links would allow backfeed of power through the main transformer to the unit auxiliary transfoimer and provide power to carry the full station auxiliary load.

The time required to perform this operation is comparable to the time the reactor could remain on RCIC operation before controlled depressurization need be initiated.

-222-Amendment No. 149, 173

l Lnt: 2 PBAPS

~

3.9 BASES (Cont'd.)

The 125-Volt battery system shall have a minimum of 105 Volts at the battery terminals to be considered operable.. The 250-Volt portion of the'125/250-volt battery system shall have a minimum of 210 Volts at the battery terminals to' be a

ccnsidered operable.

The ACT10t4 requirements specified for the degradation of the power sources provide restrictions upon continued f acility operation commensurate with the level of

?

degradation. The OPERABILITY of the power sources are consistent with the initial condition assumptions of the safety analyses.

When a diesel generator is inoperable, there is an ACTION requirement to verify that all required systems, subsystems, trains, ccmponents and devices, that depend cn the remaining OPERABLE diesel generators as a source of emergency power, are also OPERABLE.

This requirement is intended to provide assurance that a loss-of-offsite power event will not result in a complete loss of safety function of r

critical systems during the period one of the diesel generators is inoperable.

I The term verify as used in this context means to administrative 1y check by examining logs or other information to determine if certain components are out-of-service for maintenance or other reasons.

It does not mean to perform the surveillance requirements needed to demonstrate tne OPERASILITY of the component.

i Demonstrations of diesel generator operability required by Section 4.9.B may include paralleling with the of fsite source and operating the diesel generator under load.

t A standby heating system is used to maintain engine jacket cooling water and engine lube oil temperature at optimum standby starting conditions. An EDG will i

be declared inoperable if the required temperatures cannot be maintained. The EDGs will not be operated for the sole purpose of maintaining engine temperatures.

Following an EDG f ailure, the redundant EDG will be inspected prior to a test start to detect any external conditions that indicate starting the EDG might cause similar degradation or damage.

The ESWS has two 100 percent cooling capacity pumps, each powered from a separate i

standoy power supply. A third pump equivalent to the two ESW pump:. the Emergency Cooling Water pump, is located at the Emergency Cooling Tower. Thi, latter pump requires the operability of one of the two ESW booster pumps and two of the three.

Emergency Cooling Tower f ans to function adequately. In the event the 2 pumps are inoperable, the allowable repair period is conservative in view of the 3-month test interval for the system.

l 4.9 Bases The surveillance requirements for demonstrating the OPEPABILITY of the diesel i

I generators follow the recommendations of Regulatory Guide 1.9,

Selection of Diesel Generator Set Capacity for Standby Power Supplies," March 10. 1971, Regulatory Guide 1.137 " fuel-Oll Systems for Standby Diesel Generators," Revision i

1, October 1979 and Regulatcry Guide 1.108,'" Periodic Testing of Diesel Generator i

Units Used as Onsite Electric Power Systems at Nuclear Power Flants," Revision.1, August 1977 except for paragraphs C.2.A(3), C.2.C(1), C.2.C(2), C.2.D(2), C.2.D(3) and C.2.D(4).

The exceptions to Regulatory Guide 1.108 allow for gradual loading t

of diesel generators during testing and decreased surveillance test frequencies (in response to Generic Letter 84-15). Test procedures minimize the period of time that a diesel generator would not be capable of providing emergency power and

{

contain direction for the prompt restoration of the diesel, if necessary, during _

testing.

-223-Amendment No.173

1

\\

i Unit 2' l

PBAPS 4.9 BASES (Cont'd)

The diesel generator voltage may decrease to 59% of nominal when the 2000 HP RHR pump The load rejection test of the largest single load will be motor is started.

conducted with the EDG governor in isochronous mode using the Residual Heat Removal l

l Pump in full flow test as the rejected load. The load rejection test of 2400-2600 kW may be conducted with the EDG governor and voltage regulator in droop mode parallel to f

The EDG voltage will be matched to the bus voltage (4160 e 410 the offsite grid.

volts) and the overshoot upon load removal will be limited to 660 volts which is 15%

t l

of this nominal value.

The term pemanent and auto-connected loads means those loads which the diesel would t

Verification of load normally be expected to supply in the scenario being tested.

shedding from the emergency busses will include only those nomally powered from the l

The loads described by the term emergency emergency bus during plant operations.

loads are a Residual Heat Removal Pump, a High Pressure Service Water Pump and the 480 Volt emergency bus load center.

The diesel fuel oil quality must be checked to ensure proper operation of the diesel Water content should be minimized because water in the fuel could generators.

contribute to excessive damage to the diesel engine. Amendment No. 131 centralized i

comitments related to Position C.2 of Regulatory Guide 1.137, Revision 1 (October, 1979) " Fuel Oil Systems for Standby Diesel Generators."

Although station batteries will deteriorate with time, utility experience indicates there is almost no possibility of precipitous failure. The type of surveillance described in this specification is that which has been demonstrated over the years to provide an indication of a cell becoming irregular or unserviceable long before it In addition, the checks described also provide adequate indication becomes a failure.

that the batteries have the specified ampere hour capability.

t The station batteries shall be subjected to a perfomance test every third refueling This testing frequency outage and a service test during the other refueling outages.

complies with the testing requirements of the Institute of Electrical and Electronics 450 (1975), "Recomended Practice for Maintenance, Testing t

Engineers (IEEE) Standard and Replacement of Large Lead Storage Batteries," and Regulatory Guide 1.129, Rev 1 (February 1978), " Maintenance, Testing and Replacement of Large Lead Storage Batteries for Nuclear Power Plants."

A perfomance test determines the ability of the battery to meet a specified discharge '

A service test proves the rate and duration based on the manufacturer's rating.

capability of the battery to deliver the design requirements of the de systems; i.e.,

supply and maintain in operable status all of the actual emergency loads for the A perfomance test is the most severe test because the cycling >

design basis accident.

A on the battery at manufacturer's rating shortens the service life of the battery.

service test is performed at design load instead of manufacturer's ratings.

The test interval for the Emergency Service Water system, and pump room fans y

associated with the ESW pumps is deemed adequate to provide assurance that the equipment will be operable based on good engineering judgment and system redun Pump plus the additional testing accomplished when the diesel generators are tested.

flow tests during nomal operation will be performed by measuring the head and flow i the system using suitable flow equipment and pressure instrumentation.

Amendment No.131,10 I70,173

-224-

$g>E b(),

t' "n

UNITED STATES i< T E

NUCLEAR REGULATORY COMMISSION WASHINGTON. D C. 20555 Y

%.'.v

,p

..+

PHILADELPHIA ELECTRIC COMPANY PUBLIC SERVICE ELECTRIC AND GAS COMPANY j

DELMARVA' POWER AND LIGHT COMPANY ATLANTIC CITY ELECTRIC COMPANI DOCKET NO. 50-278 PEACH BOTTOM ATOMIC POWER STATION. UNIT NO. 3 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No.176.

License No. DPR-56 1.

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

A.

The application for amendment by Philadelphia Electric Company, et.

al. (the licensee) dated January 31, 1992, as supplemented by letters dated April 28, 1992, June 22, 1992, November 9, 1992, and January 8, 1993, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Commission's rules and regulations set forth in 10 CFR Chapter I.

B.

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

There is reasonable assurance (i) that the activities authorized-by this amendment can be conducted without endangering the health and'.

safety of the public, and (ii) that such activities will be conducted in compliance with the Commission's regulations; D.

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

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

2.

Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment, and paragraph 2.C(2) of Facility Operating License No. DPR-56 is hereby amended to read as follows:

t

~..

, f (2) Technical Specifications The Technical Specifications ~ contained in Appendices A and B, as revised through Amendment No.176, are hereby-incorporated in the i

~

license.

PEC0 shall operate the facility in accordance with the Technical-Speci fications.

r

i 3.

This license amendment is effective as of its date of issuance and-shall l

be implemented within 30 days of the date of issuance.

FOR THE NUCLEAR REGULATORY COMMISSION kh

/lk J T

Charles L. Miller, Director j

Project Directorate I-2 Division of Reactor Projects - I/II i

Office of Nuclear. Reactor' Regulation l

Attachmenti i

Changes to-the Technical 3

Specifications Date of Issuance: March 25, 1993

- i s

6

?

I

i g

r..

-i l.

I ATTACHMENT TO LICENSE AMENDMENT NO.176

~!

FACitITY OPERATING LICENSE NO. DPR-56

. DOCKET NO. 50-278 Replace the following pages of the Appendix A Technical Specifications with l

the enclosed'pages.

The revised areas are indicated by marginal lines.

i Remove Insert 67 67 72 72 j

132 132 132a 217 217

.i 218 218

+

218a 218a r

218b 218b 218c 218c 218d 218e

,j 218f i

2189 218h 2181 218j j

219 219 220 220 220a

.220a

(

220b 222 222 223 223 i

224 224 l

4 3

I i

i i

f t

' [

~.

PBAPS Unit 3 TABLE 3.2.6 INSTRUMENTATION THAT INITIATES OR CONTROLS THE CORE AND CONTAINMENT COOLING SYSTEMS

, Minimum No.

of-Operable Number of Instru-

! Instrument Trip Function Trip Level Setting ment Channels Pro-Remarks Channels Per vided by Design

, rip System (1)

T 2

W e Spray Pump 6 +/ 1 sec.

4 timers All pumps-loss of offsite power only Start Timer 13 sec. +/-7% of setting 2 timers A&C pumps-offsite power available 23 sec +/-7% of setting 2 timers B&D pumps-offsite power available 1 per 480V Emergency 3 +/-0.5 sec.

4 timers All timers - loss of 4kV bus (7)

Load. Center Timer offsite power only 2

LPCI Pump Start 2 sec. +/-7% of setting 4 timers LPCI pumps A&B Timer (Four Pumps) 8 sec. +/-7% of setting 4 timers LPCI pumps C&D i

1 ADS Actuation 90(/=t </=120 2 timers In conjunction with low Timer seconds Reactor Water level, High Drywell Pressure and LPCI or Core Spray Pump running interlock, initiates ADS.

p 2 ADS Bypass Timer 8 < /=t < /=10 4 timers In conjunction with low minutes reactor water level, bypasses U.

high drywell pressure gg initiation of ADS.

uh2 RNR (LPCI) Pump 50 +/- 10 psig:

4 channels Defers ADS actuation P

Discharge Pressure pending confirmation of' Interlock Low Pressure Core Cooling

,y system operation (LPCI Pump running interlock).

,m 2

Core Spray Pump 185 +/- 10 psii 4 channels Defers ADS actuation Discharge. Pressure pending confirmation of. Low "w*

Interlock.

Pressure Core cooling system operation. (Core Spray

-w

$1 Pump running interlock)

.. ~

e l

uni; a PBAPS NOTES FOR T ABLE 3.2.B 1.

Whenever any CSCS subsystem is required by Section 3.5 t.

e operable, there shall be two operable trip systems.

If the first column cannot be met for-one of the trip systems, that-trip system shall be placed in the tripped condition or t

the reactor shall be placed in the Cold Shutdown Condition within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

}

2.

Close isolation valves in RCIC subsystem.

3.

Close isolation valves in HPCI subsystem.

i 4.

Instrument set point corresponds to 378 inches above vessel zero.

l t

5.

HPCI has only one trip system for these sensors.

6.

With the number of OPERABLE channels less than required by the Minimum OPERAELE Channels per Trip System requirement, place at least one inoperable channel in the tripped condition within one hour or declare the RCIC system inoperable.

t 7.

The f ailure of a 480V Emergency Load Center timer could result in the f ailure of a 480V Emergency Load Center to re-energize following the loss of one or both

[

offsite sources. Therefore, Technical Specification 3.9.B.7 will apply when a 480V Emergency Load Center timer is not operable.

i i

! Amendment No. Y4, IIJ, II7, 176

~

l

Unit 3

'PBAPS A

t LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS-3.5.F Minimum Low Pressure Coolino 4.5.F Hinimum low Pressure Availability Cooline Availability

'I i

1.

Deleted 1.

Deleted l

2.

Any combination of inoperable components in the core and containment l

cooling systems shall not defeat the capability of the remaining operable components to fulfill the cooling functions.

[

'l 3.

When irradiated fuel is in the reactor vessel and the reactor i

is in the Cold Shutdown Condition, both core spray systems, the LPCI r

and containment cooling systems

'l t

may be inoperable, provided no work is being done which has the

{

potential for draining the reactor vessel.

4. -During a refueling outage, i

fuel and LPRM removal and replacement may be performed i

provided at least one of the 1

following conditions below is

'l satisfied:

n.

Both core spray systems and the LPCI system shall be 7

operable except that one core spray system or the LPCI system may be inoperable for.a period of thirty days, i

or b.

The reactor vessel head is

}

removed, the cavity is flooded, l

the spent fuel pool gates are

-l removed, and the water level is maintained at least 21 feet over the top of irradiated fuel assemblies seated in the spent fuel storage pool racks and no l

?

work is being performed which has the potential for draining

.[

the reactor vessel.

e f

-132-Amendment No. 772,176 l

~

[

3

.~

I Lnli a PBAPS LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 3.9 AUXILIARY ELECTRICAL SYSTEM 4.9' AUXILIARY ELECTRICAL SYSTEM Applicability:

Applicability-Applies to tne auxiliary

. Applies to the periodic i

electrical power system.

testing requirements of the auxiliary electrical Ob_iective:

systems.

To assure an adequate Objective:

supply of eitctrical power for cperation of those Verify the operability systems required for safety.

of the auxiliary electrical system.

Specification:

A.

Auxiliary Electrical A.

Auxiliary Electrical Ecuipment Ecuicment The reactor shall.not be made 1.

Diesel Generators and critical unless all of the following Offsite Circuits conditions are satisfied:

1.

Two physically independent 1.

Each of the required circuits between-the offsite independent circuits.

transmission network and between the offsite t

the onsite Class 1E transmission network and distribution system are operable.

the onsite Class IE distribation system 2.

The four diesel generators shall be shall be; egcrable and there shall be a mimimum of 108,000 gallons of diesel fuel a.

Verified OPERABLE on site.

Each operable diesel at least once per generator shall have:

7 days by verifying correct breaker c.

A separate day tank alignments and containing a minimum indicated power.

of 200 gallons of fuel, availability.

b.

A separate fuel storage tank with a minimum of I

28,000 gallons of fuel, b.

Demonstrated OPERABLE-and at least once a

per 18 months.

c.. A separate fuel transfer' by transferring, pump.

manually and l

automatically, the l

3.

The unit 4kV emergency buses start-up source and the 480V emergency-from the normal load centers are energized.

circuit to the.

j alternate circuit.

j 4.

The four unit 125V batteries c

and their chargers shall be operable.

~

-217-Amendment No. 752,-176 r

,o Unit 3 PBAPS-LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 4.9.A.1 (Continued)

2. Each of the. required diesel generators shall be demonstrated-OPERABLE:

a.

In accordance with the frequency specified in i

.4.9.A.I.2.k by:

1

1. Verifying thel fuel level in the. fuel storage tank, and the volume of fuel onsite.

2. Verifying the fuel-transfer pump starts'and transfers. fuel from the storage system to the day.

fuel ~ tank.

3. Verifying"that the diesel can start and-gradually accelerate to synchronous speed with

~ '

generator voltage and.

frequency at 4160 1 410 volts and 60 1 1.2 HZ.

4. Verifying that the dieseE i

can be synchronizec, gradually. loaded" to anigdicated2400--

2600 kw and can operate with this loss for at least 60 minutes.

5. Verifying the diesel

generator is aligned ta provide standby power to 1

-the associated emergtncy-.

l busses.

i 1

i "This test shall be conducted in accordance with the manuf acturer's recommendations regarding engine pre-lube and warmup and, as applicable, loading and shutdown.

bThis load band is meant as guidance to avoid routine overloading of the' engine..

Loads in excess of this band for special testing, under direct monitoring by the'

l manufacturer.or system engineer, or momentary variations due to changing bus loads shall not invalidate the test.

l i

Amendment No. IM,176

-218-

[

Unit 3 PBAPS LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 4.9.A.l.2 (Continued)

6. Verifying the pressure in all diesel generator air start receivers to be greater than or equal to 225 psig..

b.

At least once per 184 days the diesel generator shall be started" and verified to accelerate to synchronous speed in less than or equal to 10 seconds. The generator

-voltage =and frequency shall rea_h 4160 + 410 volts and 60 + 1.2 Hz within 10 seconds after the start signal. The generator shall be manually synchronized to its appropriate emergency bus, loaded to an indicated 2400-2600 b

kw in less than or equalfto 60 seconcs, and operated for at least 60 minutes. This test, if it is performed so it

. coincides with the-testing required by-Surveillance Requirement 4.9.A.1.2.a.3 and 4.9.A.1.2.a.4, ray also-serve to concurr',tly meet those requirements as well.

e aThis test shall be conducted in accordance with the manufacturer's recommendations regarding engine prelube and warmup and, as' applicable,' loading 'ard.

shutdown.

This band is meant as guidance to avoid routine overloading of the engine.

b Loads in excess of.this band' for special testing, under direct monitoring by trie manufacturer or system engineer, or momentary variations due to changing bus; loads shall not invalidate the test.

.218a-Amendment No. I N, 176 i

Unit-3 PBAPS LIMITING CONDITIO!45 FOR OPERATION SURVEILLANCE REQUIREMENTS 4.9.A.l.2 (Continued) c.

By removing accumulated water:

1. From the day tanks at least once per 31 days and after each occasion when the diesel is operated for greater than 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months , and

2. From the main storage l

tanks at least once per 31 days.

d.

By sampling new fuel oil in accordance with ASTM D4057-81 prior to addition to the storage tanks and:

1..By verifying in l

'accordance with the tests specified in ASTM D975-81 prior to addition to the storage tanks that l

the sample has:

P a) An API Gravity of within 0.3 degrees at 60 degrees F or a specific gravity of within 0.0016 at 60/60 degrees F when compared to the supplier's certificate; or an absolute specific:

gravity at 60/60

,~

degrees F of.

greater than or equal to 0.83 but less than or equal to 0.89; or an API Gravity at 60 degrees F greater than or equal to 27 degrees but t

less than or equal to 39 degrees.

-218b-Amendment No. 134, 161,176

Unit 3 PBAPS LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 4.9.A.l.2.d.1 (Continued) b) A kinematic viscosity at 40-degrees C of greater than or equal to 1.9 centistokes but less than or equal to 4.1 centistokes, if' gravity was no+

determined by comparison with the supplier's certification.

c) A flash point equal to or greater than 125 degrees F, and j

d) A cl2ar and bright appearance with proper color when tested in accordance with j

ASTM D4176-82.

l

2. By verifying within l

l 31 days of..cbtaining the sample that 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 01552-79 or ASTM l

D2622-82.

Amendment No. 14, 10),134,

-218c-16I,176

r

.~

Unit 3 PBAPS LIMITING CONDITION FOR OPERATION

~ SURVEILLANCE REQUIREMENTS 4.9.A.1.2 (Continued)

e. At least once every 31 days by obtaining a semple of fuel oil from the storage tank in accordance with ASTM D2276-78, and verifying that total particulate contamination is less than 10mg/ liter when checked in accordance with ASTM D2276-78, Method A, except that the filters specified in ASTM D2276-78, Sections 5.1.6 and 5.1.7, may have a nominal pore size of up to three (3) microns,

f. At least once per 18 months by:

1. Subjecting the diesel to an inspection in accordance with procedures prepared in conjunction with its manufacturer's recommendations for this class of-standby service.

2. Verifying the diesel generator capability to reject a load of greater than or equal to that of the RHR Pump Motor for each diesel generator wh.le maintaining voltage within 4160 1 410 volts and frequency at l

60 1 1.2hz.

3. Verifying the diesel generator capability to reject an indicated load of 2400 kW-2600.

I kW without tripping. The generator voltage shall not exceed one initial value (4160 i

1 410 volts) by more than 660 volts during and.following the load rejection.

-218d-Amendment No.176

rr Unit 3~

PBAPS LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 4.9.A.l.2.f (Continued)

4. Verifying that all. automatic diesel generator trips except engine overspeed, generator differential over-current, generator ground overcurrent and manual cardox initiation are automatically bypassed upon an ECCS actuation signal.

5.Verifyingthedieselgenerator operates for at least 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . During the first 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months of this test, the diesel generatorsnallbeloagedtoan indicated 2800-3000 kW and during the remaining 22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months of this test, the diesel generator shall be loa d to an indicated 2400-2600 kW r

6. Verifying diesel generator capability at full _ load temperature within 5 minutes after completing the 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months e

test by starting and loading _the diesel as. described in Surveillance Requirement 4.9 A.I.2.b and operat g for greater than 5 minutes l

aThis test shall be conducted in accordance with the manufacturer's recommendations regarding engine prelube and warm-up and, as applicable, loading and shutdown.

bThis band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band for special testing, under direct monitoring by the manufacturer or system engineer, or momentary variations due to changing bus loads shall not invalidate the test.

cif Surveillance Requirement 4.9.A.1.2.f.6 is not satisfactorily completed, it'is-not j

necessary to repeat the preceding 24-hour test.

Instead, the diesel generator may be operated at 2400-2600 kW for 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months or until operating temperature has stabilized. prior' to:

performing Surveillance Requirement 4.9.A.1.2.f.6.

dPerformance of Surveillance Requirement 4.9.A'.1.2.f.6 will not be used to satisfy the requirements of Surveillance Requirement 4.9.A.I.2.b.

l

- 218e -

Amendment No.176

o --

tin i t 3.

PBAPS LIMITING CONDITIONS FOR 0PERATION SURVE!LLANCE REQUIREMENTS 4.9.A.1.2 (Continued)

7. Verifying that the fuel transfer pump transfers fuel from each fuel storage tank to the day tank of each' diesel via the installed cross connection lines.

g.

At least once each operating cycle by:-

1. Simulating a loss-of-offsite l

power by itself. and:

a) Verifying deenergization of the emergency busses-and Icad-shedding from the emergency busses.

b) Verifying the diesel generator starts" on the

~!

auto-start signal, energizes the emergency busses within 10 secords, energizes the-permanent and auto-connected.

loads through the individual load timers and operates for greater than or equal to 5 minutes.

After energization, the steady-state voltage and frequency of the emergency busses shall be maintained at 4160 + 410 volts and 60 + 1.2 Hz during this test.

i aThi's test shall be conducted in accordance.with the manufacturer's recommendations.

regarding engine prelube and. warm-up and, as applicable, loading and shutdown.

l

?

i

-218f-Amendment No.176

l Unit 3 PBAPS LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 4.9. A. l.2 (Continued) 2.

. Verifying that on an ECCS actuation test signal, without loss-of-offsite.

power,athe diesel generatcr-starts on the auto-start signal and operates for greater than or equal 5 -

minutes.._The generator-voltage and frequency shall reach 4160 + 410 volts-and 60

+ 1.2 Hz within 10 seconds af ter the auto-start signal; the steady state _ generator voltage and frequency shall be maintained within these limits during this test.

'3.

Simulating a loss-of-offsite power in conjunction with-an ECCS actuation test signali and:

a) Verifying deenergization of the emergency busses' and load shedding from the emergency busses.

b)Verifyingthedigsel:

generator starts on the auto-start signal, energizes the emergency busses within 10 seconds, energizes'the_ permanent-and auto-connected loads through the individual -

load timers and-operates-for greater than or equal to 5 minutes.

After energization, the steady-state' voltage and frequency of.the emergency busses shall be maintained at 4160. + 410 volts and 60

+ 1.2 Hz during this test.

aThis test shall be conducted in accordance with the manuf acturer's recomeendations regarding engine prelube and warmup and, as applicable, loading and shutdown.

Amendment No. 176-l

-2189-

Unit 3 FSAPS LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 4.9.A.l.2 (Continued)

4. Verifying the diesel generato_r's capability to:

~

a) Sychronize with the offsite power source.

while the generator is loaded with its_

emergency loads upon_a

~

simulated restoration of offsite power.

b) Transfer its loads to the offsite power source, and c) Be restored to its standby status.

h.

At least cnce per 10 years or after any modifications which could affect diesel generator interdependence by a

starting all four diesel generators simultaneously and verifying that al1 four diesel generators accelerate to at least 855 rpm in less than or' equal ~to 10 seconds.

i. At least once per 10 years by draining each fuel oil tank, removing the accumulated sediment and cleaning the tank using a sodium i

hypochlorite or eg'uivalent solution.

J. The fuel oil storage _ tank-l-

cathodic protection system shall be checked as follows:

1. At least once every twelve L

months perform a test to determine whether the cathodic protection _is' adequate, and aThis test _ shall be conducted in eccordance with the manuf acturer's recommendations l

t regarding engine prelube and warmup and, as applicable, loading and shutdown.

-218h.

Amendment No.176

Unit' 3 PBAPS LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 4.9.A.I.2 (Continued) f

.2.

At least once every two t

conths inspect the cathodic t

protection rectifiers.

k.

If the number of= failures during i

d the last 20 valid demands is less than or_ equal.to 1, the test frequency shall be at least-once

_per 31 days.

If the number of failures during the last 20 valid demands is greater than or equal to_2, the test frequency shall be at least e

once per 7 days,

1.

All diesel generator failures, valid or non-valid, shall be reported to the Commission in a 1'

Special Report within 30 days.

' Reports of the diesel generator failures shall include the information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revision

-1, August 1977.

dCriteria for determining the number of failures and number of valid demands shall be in accordance with Regulatory Position C.2.e of Regulatory Guide 1.108, but determined on a per diesel generator basis.

EThe associated test freque.cy shall be maintained until _seven consecutive failure free demands have been performed and the number of f ailures in the last 20 deniands have been reduced to one.

For the purposes of determining the required frequency, the previous test f ailure count may be reduced to zero if a complete diesel overhaul to like-new condition is completed. This diesel overhaul, including appropriate' post-maintenance cperation and testing, shall be specifically approved by the manufacturer and acceptable diesel reliability must be-demonstrated. The reliability criterion shall be the successful completion of 14 ' consecutive tests. -Ten of these tests may be slow starts in accordance with Surveillance Requirements 4.9. A.1.2.a.3 and 4.9.A.1.2.a.4 and four tests shall be f ast starts in accordance with the Surveillance Requirement 4.9.A.1.2.b.

LIf this i

criterion is not satisfied during the first series of tests, any alternate criterion.to'be

.used to reset the valid failure count to zero requires NRC approval.

i

-218i.

Amendme.. No. 176

l Unit 3 i

PBAPS j

LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENIS 4.9.A.2 Unit Batteries I

J

a. Every week the specific j

gravity,'the voltage and temperature of-the pilot cell and overall battery voltage shall be measured and logged.

.l

b. Every three months. the l

measurements shall be made of voltage of each cell to nearest 0.1 Volt,-specific i

. gravity of each cell, and temperature of every fifth cell. These measurements shall be logged.

c. The station batteries shall be I

subjected to a performance t

test every third refueling outage and a service test during the other refueling outage. In lieu of the performance test every third refueling outage, any. battery that shows " signs of degradation or has reached 85%

of its service life" shall be subjected to an annual performance test. The service test need not be-performed-on

~

the refueling outage during

'which the performance test was conducted. The specific-gravity and voltage of: each cell shall be determined after.

the discharge and logged.

4.9.A.3 Swing Buses-r

a. Every two months the-swing buses supplying power to the Low Pressure Coolant Injection System (LPCIS) valves shall be tested to assure *. hat the transfer circuits operate as designed.

-218j-Amendment No. 176

^

Unit 3 PBAPS LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 3.9.B Operation with Inoperable Ecuipment 4.9.B. Operation with Inceerable-Ecuipment Whenever the reactor is in Run Mode or Startup Mode with the reactor not in a Cold-Condition, the availability of electric power shall be as specified in 3.9. A, except as follows:

1.

With one offsite circuit required by

1. When it is determined that one Specification 3.9.A.1 inoperable, offsite circuit required by restore at least two offsite circuits to Specification l3.9.A.1 is OPERABLE status within 7 days or be in inoperable, verify the least HDT SHUTDOWN within the next 12 OPERABILITY of the remaining hours and in COLD SHUTDOWN within the A.C. sources by performing following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

Surveillance Requirement 4.9.A.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter.

If any of the diesel generators have not been successfully tested within the preceding 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , demonstrate OPERABILITY of these diesel generators by performing Surveillance Requirement 4.9.A.1.2.a.3 for one diesel at a time within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months and once per 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months thereafter.

I' 2.

With two independent off-site circuits

2. None required by Specification 3.9.A.1 inoperable, continued operation is permissible, provided the four diesel generators and associated emergency busses are operable, all core and containment cooling systems are operable and reactor power level is reduced to 25% of the design.

~

-219-Amendment No.- 6B,152,176

+4 a

Unit 3 PBAPS LIMITING CONDITIONS FOR'0PERATION SURVEILLANCE REQUIREMENTS

-1 l

3.9.B (Continued) 3.

With one diesel generator inoperable.-

3. When it is determined that restore the inoperable diesel generator one diesel generator is-and associated emergency bus to OPERABLE inoperable, verify the status within 7 days or be in at least OPERABILITY of the remaining l

HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months A.C. sources by performing and in COLD SHUTDOWN within the Surveillance Requirement e

following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

4.9.A.1.1.a within I hour and once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. Verify within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months that required systems,

- subsystems, trains, r

components, and devices that depend on the remaining diesel generators as a i

source of emergency power are OPERABLE.

If the diesel generator became inoperable for any

- reason other than preplanned preventative maintenance, or testing, demonstrate the OPERABILITY of the remaining operable diesel generators

- by performing Surveillance Requirement 4.9A.1.2.a.3 for.

one diesel at a time, within

-t 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months

and at least once per 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months thereafter.

)

1 q

~i i

i l

J I

i

This test is required to be completed regardless of when the inoperable diesel generator is restored to OPERABILITY for failures that are potentially generic to the remaining diesel generators and for which appropriate alternative testing cannot be i

designed.

)

-220-Amendment No. 68,176

'l

Unit 3 PBAPS i

LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 3.9.B (Continued),

4.

With one diesel generator and cne

4. When it is determined that offsite circuit required by one diesel generator and Specification 3.9.A.1 inoperable, one offsite circuit required restore at least-two offsite by Specification 3.9.A.1 l

circuits or four diesel are inoperable, verify the generators to OPERABLE status' OPERABILITY of the remaining I

within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the time A.C.. sources by performing of initial loss or be in at Surveillance Requirement.

' j least HOT SHUTDOWN within the 4.9.A.I.l.a within 1 hour-next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN and once per 8 hour9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months s-within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

thereafter. Verify within 2.

hours, that required-systems,. subsystems, trains, components, and devices that depend on the remaining t

diesel generators as a source of emergency power are OPERABLE.

i If the diesel generator became inoperable for any-i reason other than preplanned preventative maintenance, or testing, demonstrate the OPERABILITY of the remaining diesel generators by performing Surveillance Requirement.4.9.A.I.2.a.3 i

for one diesel. generator at a tirae, within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months *.

5.

From and af ter the date that one of the

5. None 125 volt battery systems is made or found to be inoperable for any reason, continued reactor operation is permissible during.the succeeding three days within electrical safety l

considerations, provided repair work is initiated in the most expeditious manner to return the failed component to an operable state, and Specifications 3.5.F and 3.9.B.3 are satisifed.

l

This test is required to be completed regardless of when the inoperable diesel generator is restored to OPERABILITY for failures that are potentially generic to the remaining diesel generators and for which appropriate alternative testing cannot be-designed.

j

-220a-Amendnant No. IM,176 l-l

Unit PBAPS LIMITING CONDITIONS _FOR OPERATION SURVEILLANCE REQUIREMENTS 3.9.B (Continued) 6.

With fuel oil in one of the diesel

6. None i:

generator main storage tanks not available or not in conformance with Surveillance Requirement 4.9.A.1.2.e, implement the following:

l a.

Isolate the main storage tank from the system, with the associated diesel generator being supplied from one of the remaining storage tanks within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , and b.

Establish and maintain a minimum of 108,000 gallons of diesel fuel oil in the other three main storage tanks within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , and c.

Sample the fuel oil in the other three main storage tanks and confirm conformance with specification 4.9.A.1.2.e within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , and d.

Replace the unacceptable fuel oil l

With acceptable fuel and return the storage tank to service within 7 days, or place the reactor in Cold t

Shutdown within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

Accelerated testing of the diesel generators is not required.

7.

With one of the 4kV emergency busses

7. None or 480V emergency load centers required by 3.9.A.3 not energized, 3

declare the associated equipment inoperable and take the appropriate' action for that system.

Reenergize the bus within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months 4mmeMmeet WM 1 *[

.~-l Unit 3 PEAPS l

3.9 BASES Tne general objective of this Specification is to assure an adequate source of electrical power to operate the auxiliaries during plant operation, to operate f acilities to cool and lubricate the plant during shutdown, and to cperate the engineered safeguards following the accident. Two independent i

power sources from the off-site transmission network and the diesel generators are available.

One off-site source is provided through the 13.2 r

kV startup regulating transformer switchgear No. 3 supplied from either the l

No. 343 startup transformer or the startup and emergency auxiliary regulating transformer No. 3.

The other off-site source is provided through the 13.2 kV startup transformer switchgear No. 2 supplied from the startup and emergency auxiliary transformer No. 2.

The two off-site sources are connected to the on-site Class 1E distribution system (which begins with the 4kV emergency buses) by physically independent circuits.

The dc supply is required for switchgear and engineered safety feature systems.

Specification 3.9. A states the required availability of ac and dc power; i.e., active of f-site ac sources and the required amount of on-site at and dc sources. The requirement for a minimum onsite inventory of diesel fuel is based upon an analysis of the time dependent electrical loads on the diesels following an accident. A battery charger is supplied with each of the 125-Volt batteries.

The No. 2, No. 3 and No. 343 startup transformers and unit auxiliary i

transformers are each sized to carry 100% of the auxiliary load. If one of the off-site power circuits becomes inoperable, the unit can continue to operate since the unit auxiliary transformer is in service, the other off-site power circuit is available, and the required number of. diesel generators is operational.

If both of f-site power circuits are inoperable, the reactor power level must be reduced to a value whereby the units can safely reject the load and continue to supply auxiliary electric power to the station.

In the normal mode of operation, the No. 2 startup transformer and either the No. 3 or No. 343 startup transformer are energized and four diesel generators are operable. One diesel generator may be allowed out-of-service based on the availability of power from the startup transformer and the f act that three diesel generators carry. sufficient engineered safeguards equipment to cover all breaks. With one off-site power circuit and one diesel generator out-of-service, the off-site transmission line corresponding to the operable off-site power circuit must be available.

Upon the loss of one on-site and one off-site power source, power would be

.available from the other immediate off-site power source and the three operable. on-site diesels to carry sufficient engineered safeguards

)

equipment to cover all breaks.

In addition to these two power sources, removal of the Isolated Phase Bus " quick" disconnect links would allow backfeed of power through the main transformer to the unit auxiliary transformer and provide power to carry the full station auxiliary load.

j The time required to perform this operation is comparable to the time the i

reactor could remain on RCIC operation before controlled depressurization i

I need be initiated.

Amendment No. 172,176

-222-

O Unit 3 PBAPS 3.9 EASES (Cont'd.)

The 125-Volt battery system shall have a minimum of 105 volts at the battery terminals to be consicered operable. The 250-Volt portion of the 125/250-Volt battery system shall have a minimum of 210 Volts at the battery terminals to be considered operable.

The ACTION requirements specified for the degradation of the power sources provide restrictions upon continued facility operation commensurate with the level of dearadation.

The OPERABILITY of the power sources are consistent with the initial condition assumptions of the safety analyses.

{

When a diesel generator is inoperable, there is an ACTION requirement to verify that all required systems, subsystems, trains, components and devices, that depend on the remaining OPERABLE diesel generators as a source of emergency po.er, are also OPERABLE.

This requirement is intended to provide assurance that a loss-cf-cffsite power event will not result in a complete loss of safety function of critical systems during the period one of the diesel generators is_ inoperable.

Tne term verify as used in this context means to administratively check by examining logs or other information to determine if certain components are out-of-service for maintenance or other reasons.

It does not mean to perform the surveillance requirements needed to demonstrate the OPERABILITY of the component.

Demonstrations of diesel generator operability required by Section 4.9.B may include paralleling with the of fsite source and operating the diesel generator under load.

t A standby heating system is used to maintain engine jacket cooling water and engine lube oil temperature at optimum standby starting conditions. An EDG will be declared inoperable if the required temperatures cannot be inaintained. The EDGs will not be operated for the sole purpose of maintaining engine temperatures.

Following an EDG f ailure, the redundant EDG will be inspected prior to a test i

start to detect any external conditions that indicate starting the EDG mign: cause r

similar degradation or damage.

The ESWS has two 100 percent cooling capacity pumps, each powered from a separate standby power supply. A third pump equivalent to the two ESW pumps, the Emergency Cooling Water pump, is located at the Emergency Cooling Tower. This latter pump requires the operability of one of the two ESW booster pumps and two of the three j

Emergency Cooling Tower fans to function adequately.

In the event the 2 pumps are inoperable. the allowable repair period is conservative in view of the 3-month i

test interval for the system.

)

4.9 Bases 1

The surveillance requirements for demonstrating the OPERABILITY of the' diesel j

generators follow the recommendations of Regulatory Guide 1.9, " Selection of Diesel Generator Set Capacity for Standby Power Supplies," March 10, 1971, Regulatory Guide 1.137 " Fuel-Oil Systems for Standby. Diesel Generators," Revision J

1, October 1979 and Regulatory Guide 1.108, " Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1.

August 1977 except for paragraphs C.2. A(3), C.2.C(1), C.2.C(2), C.2.0(2), C.2.D(3) and C.2.D(4).

The exceptions to Regulatory Guide 1.108 allow for gradual loading of diesel generators during testing and decreased surveillance test frequencies (in response to Generic Letter 84-15). Test procedures minimize the period of time that a diesel generator would not be capable of providing emergency power and contain. direction for the prompt restoration of the diesel, if necessary, during testing.

Anendment No. 174,176

-223

.L Unit 3 PBAPS 4.9 BASES (Cont'd)

The diesel generator voltage may decrease to 59% of nominal when the 2000 HP RHR pump motor is started. The load rejection test of the largest single load will be conducted with the EDG governor in isochronous mode using the Residual Heat Removal Pump in full flow test as the rejected load. The load rejection test of 2400-2600 kW l

may be conducted with the EDG governor and voltage regulator in droop mode parallel to I

the offsite grid.

The EDG voltage will be matched to the bus voltage (4160 410 volts) and the overshoot upon load removal will be limited to 660 volts which is 15%

of this nominal value.

a The term permanent and auto-connected loads means those loads which the diesel would normally be expected to supply in the scenario being tested. Verification of load shedding from the emergency busses will include only those normally powered from the emergency bus during plant operations. The loads described by the tem emergency loads are a Residual Heat Removal Pump, a High Pressure Service Water Pump and the 480 Volt emergency bus load center.

l The diesel fuel oil quality must be checked to ensure proper operation of the diesel Water content should be minimized because water in the fuel could generators.

contribute to excessive damage to the diesel engine. Amendment No. 134 centralized comitments related to Position C.2 of Regulatory Guide 1.137, Revision 1 (October, 1979) " Fuel Oil Systems for Standby Diesel Generators."

Although station batteries will deteriorate with time, utility experience indicates there is almost no possibility of precipitous failure. The type of surveillance described in this specification is that which has been demonstrated over the years to provide an indication of a cell becoming irregular or unserviceable long before it l

becomes a failure.

In addition, the checks described also provide adequate indication '

i that the batteries have the specified ampere hour capability.

The station batteries shall be subjected to a performance test every third refueling outage and a service test during the other refueling outages. This testing frequency complies with the testing requirements of the Institute of Electrical and Electronics Engineers (IEEE) Standard 450(1975), "Recomended Practice for Maintenance, Testing and Replacement of Large Lead Storage Batteries," and Regulatory Guide 1.129, Revision 1 (February 1978), " Maintenance, Testing and Replacement of Large Lead Storage Batteries for Nuclear Power Plants."

A performance test determines the ability of the battery to meet a specified discharge,

rate and duration based on the manufacturer's rating. A service test proves the s

capability of the battery to deliver the design requirements of the dc systems; 1.e.,

i supply and maintain in operable status all of the actual emergency loads for the design basis accident. A perfomance test is the most severe test because the cycling !

A on the battery at manufacturer's rating shortens the service life of the battery.

service test is performed at design load instead of manufacturer's ratings.

I The test interval for the Emergency Service Water system, and pump room fans associated with the ESW pumps is deemed adequate to provide assurance that the equipment will be operable based on good engineering judgment and system redundancy, plus the additional testing accomplished when the diesel ge,1erators are tested.

Pump flow tests during nomal operation will be performed by measuring the head and flow in the system using suitable flow equipment and pressure instrumentation.

-224-Amendment No. 105, 134, 169, 194,176

-

ML20035C478

Text

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