Text

Proposed Tech Specs Re Emergency Diesel Generators
	ML20005F842
Person / Time
Site:	Hatch
Issue date:	01/10/1990
From:	; GEORGIA POWER CO.
To:	;
Shared Package
ML20005F839	List: ML20005F838; ML20005F842;
References
	NUDOCS 9001170310
	Download: ML20005F842 (22)
	v • d • e

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ENCLOSURE 3 l

5 PLANT HATCH - UNIT 1 NRC DOCKET 50-321

-OPERATING LICENSE DPR-57 REQUEST T0' REVISE TECHNICAL SPECIFICATIONS:

EMERGENCY DIESEL GENERATQRS

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PAGE CHANGE INSTRUCTIONS Removed Paae Insert Paae 3.9-1 3.9.1 3.9-2 3.9.2 3.9-2a 3.9-2a f

3.9-2b 3.9-2b i

r S.9-2c 3.9-2d 3.9-4 3.9-4 3.9-4a 3.9-4a 3.9-4b 3.9-7 3.9-7 3.9-8 3.9-8 e

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9001170310 poog39 DR ADOCK 05000321 PDC 0344V

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LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 3.9.

AURILIARY ELECTRICAL SYSTEMS 4.9.

AUXILIARY ELECTRICAL SYSTEMS ADDlicability ADDlicabilitV The t.imiting Conditions for The Surveillance Requirements apply Operation apply to the auxiliary to the periodic testing require-electrical power systems.

ments of the auxiliary electrical power systems.

Objective Objective The objective of the Limiting The objective of the Surveillance Conditions for Operation is to Requirements is to verify the assure an adequate supply of operability of the auxiliary

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electrical power for operation of electrical systems.

those systems required for safety.

SDecifications Specifications A.

Reouirements For Reattor A.

Aux' 11ary Electrical Systems Startup Ecu' Daent The reactor shall not be made Tests shall be performed at sched-critical from the Cold Shutdown uled intervals as follows to de-Condition unless all of the fol-tect deterioration of equipment lowing conditions are satisfied and to demonstrate that auxiliary electrical systems equipment and components are operable.

l 1.

Of f site Power Soggi 1.

Off site Power Sources j

At least two 230-kV offsite trans-a.

Verify correct breaker l

mission lines shall be available alignments and indicated and each shall be capable of power availability at least J

supplying auxiliary power to the once per 7 days, emergency 4160 volt buses (1E.

1F, and 16) and each shall be b.

Demonstrate manual and capable of supplying power to automatic transfer of both startup auxiliary trans-unit power supply f rom formers (1C and 10).

the normal circuit to alternate circuit for each of the required circuits f rom of fsite at least once per 18 months.

2.

Standbv AC Power suonly (Diesel 2.

Standby AC Power SuoDiv (Diesel Generators 1A. 18. and IC)

Generators 1 A.18. and IC)

Three diesel generators (1 A.18 The following periodic tests and and IC) shall be operable

and l

surveillance of the standby AC capable of supplying power to power supply (Diesel Generators the emergency 4160-volt buses 1A 18. and IC) shall be per-(it.1F. and 16).

formed:

For each diesel generator to be operable and capable of sup-plying power, the following conditions must be met:

A diesel generator may be inoperable for up to 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months during surveillance testing without entering the Actions, while control is taken locally to allow gradual startup and to allow the diesel engine to be barred (rolled) over.

HATCH - UNIT 1 3.9-1 Proposed TS/0312q/296-147

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LIMITING CDNDITION5 FOR OPERATIDN SURVEILLANCE REQUIREMENT 5 3.9.A.2.

Standby AC Power SuDolv (Diesel 4.9.A.2.

Standby AC Power SuDolv (Diesel Generators I A.18. and IC)

Generators 1A. 18. and IC)

(Continued)

(Continued) a.

peerability a.

Operability l

The diesel generator itself 1.

Each diesel generator shall and its auxiliaries are be manually started and i

operable.

loaded to demonstrate operational readiness j

in accordance with the frequency specified in Table 4.9-1 on a $taggered Test Basis.* Verify that each l

diesel starts from ambient condition, gradually load the generator to 1710-2000 kW** and operate for 1 60 1

minutes. A steady-state voltage of 4160 i 420 volts J

and a steady-state frequency of 60 + 1.2 Hr will be neintained., Verify the pres-J sure in both diesel air start

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receivers to be 1 225 psig.

2.

At least once per 184 days, each diesel generator shall i

be started and verified to reach synchronous speed in l

< 12 seconds, loaded to an t

Indicated 2250-2400 kWa* for 1A and IC and 2360-2425 kW**

for 1B in $ 120 seconds, and operated for 160 minutes.

diesel generator will achieve l The test will verify the and maintain a steady-state

-voltage of 41601420 volts and a steady-state frequency r

of 6011.2 Hz.*

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For the 18 (swing) diesel, a single test will satisfy the requirements for

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Unit 1 Specification 4.g.A.2.a.1 and Unit 2 Specification 4.8.1.1.2.a.4, with the diesel connected to each unit's emergency bus for 1 30 minutes.

1 A single 6-month (184-day) test for the 18 diesel will satisfy the requirements for Unit 1 Specification 4.9. A. 2.a.2 and Unit 2 Specification 4.8.1.1.2.b with the diesel connected to each unit's emergency bus for 1 30 minutes. The 6-month test for the 1B diesel will be initiated using the starting circuitry on one unit for one i

6-month test, and the starting circuitry on the other unit at the next 6-month test.

- Momentary variations outside this band shall not invalidate the test.

-HATCH - UNIT 1 3.9-2 Proposed TS/03120/296-147 i

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LIMITING CONDITIONS FOR OPERAllDN SURVEILLANCE REQUIREMENT 5 4.g.A.2.

Standby AC Power Sunolv (Diesel J

Generators 1A. 18. and IC)

(Continued) 6.

Doerability (Continued) 3.

At least once per 18 months, subject the diesel to an inspection in accordance with procedures prepared in 1

conjunction with its l

nenufacturer's recommendations for this class of standby i

service.*

l 4.

At least once per 18 months, verify the diesel generator capability to reject its largest single shutdown (emergency) load, while meintaining voltage at 41601420 volts. For diesel generator 1A, this would be CS pump 1A at rated flow; for diesel generator 18, this would be either the IC or 2C Residual Heat Removal Service Water (RHRSW) pump at rated flow; for diesel generator 1C, this would be CS pump 18 at rated flow. During the load rejection test, the i

diesel generator shall not exceed the nominal speed plus 15% of the difference between nominal speed and the overspeed trip setpoint, or 155 above nominal speed, whichever is less.*

i 5.

At least once per 18 months, verify the diesel generator capability to reject a load of at least 2775 kW without 4

tripping. The generator voltage shall not exceed 4800 volts during and following the load rejection.*

1 6.

At least once per 18 months, verify the diesel generator 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 I

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For the 18 diesel generator a single full load rejection test every j

18 penths will satisfy the requirements of Unit 1 Specification i

4.g.A.2.a.5 and Unit 2 Specification 4.8.1.1.2.d.4.

A single partial load rejection test every 18 months will satisfy the requirements of Unit 1 Specification 4.g. A.2.a.4 and Unit 2 Specificat'.on 4.8.1.1.2.d 3.

A single diesel inspection will satisfy the requirements of Unit 1 Specification 4.9. A.2.a.3 and Unit 2 Specification 4.8.1.1.2.d.1.

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HATCH - UNIT 1 3.9-2a Proposed 15/0312q/296-147 i

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l LIMlilNG COND1110NS FOR OPERA 110N SURVilLLANCE kl0UlklMENTS 4.9.A.2.

Standby AC Power SuoDiv (Diesel f.enerators 1A. 18. and 101 l

(Continued) a.

Doerability (Continued) diesel generator shall be loaded to 12950 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 i

loaded to 2175-2825 kW*.**

r 7.

At least once per 18 months, verify the auto-connected loads to each diesel genera-I tor do not exceed 3100 kW.

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8.

At least once per 18 months, verify the diesel generator's capability to synchronite with the ofIsite power source j

while the generator is loaded i

with its emergency loads upon a simulated restoration of of fsite power, to transfer its loads to the offsite I

power source, and to proceed through its thutdown sequence, j

9.

At least once per 18 months, verify that with the diesel generator operating in the test mode (connected to its

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bus), a simulated LOCA 1

actuation signal overrides the test mode by returning the diesel generator to standby operation and.

automatically energizes the emergency loads with offsite power.

10. At-least once per 10 years, l

or af ter any modifica-f l

tions which could af fect diesel generator inter-2 dependence, verify that all three diesel generators start simultaneously during shutdown, and accelerate to synchronous speed in 5 12 seconds.

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Momentary variations outside this band shall not invalidate the test.

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- For the 18 diesel generator a single 24-hour load test every 18 months q

will satisfy the requirements of Unit 1 Specification 4.9.A.2.a.6 and Unit 2 Specification 4.8.1.1.2.d.9.

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I HATCH - UNIT 1 3.9-2b Proposed TS/0312q/296-147

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LIM 111N6 COND1110N$ FOR OPERA 110N SURVillLANCE R[0UIRIMENTS l

j 3.9.A.2.

Standby AC Power Supolv [QJnti 4.9.A.2.

Standby AC Power Sunolv (Diesel fsentrators IA. 13. and it)

Generators 1 A.1B. and 101 l

(Continued)

(Continued) i b.

Diesel Batterv (125 Volti b.

Diesel Battery (125 volt) l tach 126-volt diesel battery tech 12fi-volt diesel battery is operable and capable of shall be subjected to the

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supplying the required load, same periodic surveillance as 1

the plant batteries in Spect-fication 4.9.A.3.

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$atterv Charaer c.

Batterv Charner i

Ait operable battery charger is Indicators shall be provided l

available. Each battery charger to monitor the status of j

shall have adequate capacity to the battery charger supply.

r restore its battery to full This instrumentation shall charge within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months from a include indication of output distharged condition while current and output voltage.

J carrying the DC load.

l d.

Diesel Fuel d.

Diesel Fuel there shell be a minimum of 99.000 gallons of acceptable l 1.

The quantity of diesel l

diesel fuel in the diesel fuel available in each I

fuel storage tanks and a f uel storage tank and minimum of 900 gallons

fuel day tank shall be in each diesel fuel day tank.

measured and recorded i

conc 6rrently with the i

operability test speci-i fled for that diese) in Specification 4.9.A.2.a.1.

2.

At least once per 92 days l

by verifying that a sample I

of diesel fuel f rom the fuel storage tank, obtained in accordance with ASTM-D270-f,5 is within the acceptable limits specified in Table 1 of ASTM 0915-14 when checked for viscosity, water and i

sediment, e.

Fuel 011 Transfer Punos e.

Fuel 011 Transfer Punos A f uel oil transf er pump shall be operable and capable 1.

The operation of the diesel I

l of transferring fuel oil fuel oil transfer pumps to f rom the storage system to transfer fuel f rom the the day tank, storage system to the day tank shall be demonstrated concurrent with the oper-ability test specified for that diesel in Specification i

4.9.A.2.a.1.

t 2.

The operation of the diesel fuel oil transfer pumps to transfer fuel f rom each fuel storage tank to the day tank of each diesel, via the i

installed cross connection lines, shall be demonstrated at least once per 18 months.

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During verification of fuel pump operability with the day tank containing i

< 900 gallons, the associated diesel generator may be inoperable for up to i

4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months without entering the Actions.

I HATCH - UNIT _1 3.9-2c Proposed TS/0312q/296-0 J

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HATCH - UNIT 1 3.9-2d Proposed 15/03120/296-0

6 LIMITINE CONDITION 5 FDR DPERATION EURVEILLANcl REDUIREMENT5 4.9.A.6.

Emereaner 260 valt bt to 600 Volt 1

At inwartara (Continued) b.

Once every scheduled refueling outage, the emergency fl0-volt l

DC/600-volt AC inverters shall be l

subjected to a lead test to l

t demonstrate operutional readiness.

3.g.A.7.

Loait systems 4.9.A.7.

Lonic 1rstems The following logic systems lhe logic systems shall be tested in shall be operable:

the manner and f requency as follows:

C a.

The common accident signal a.

Each division of the cannon j

logic system is operable.

accident signal logic system shall be tested every scheduled refuel-l ing outage to demonstrate that it will function on actuation of the l d

(CC$ to provide an automatic start signal to all 3 diesel generators, j

tech diesel generator shall l

l operate on standby for g $

b.

The undervoltage relays minutes.

l and supporting system are operable.

b.1.

Once every 19 months, the l

t conditions under which the l

undervoltage logic system is i

required shall be simulated with l

an undervoltage on each start-i bus to demonstrate that the 1

l emergency busses are deener-gited, the diesel generators will start, energite the emer-i gency busses with permanently connected loads in 512 seconds, energitt the auto-connected shutdown (emergency) loads through the load sequencer, 4

i operates f or 15 minutes while i

the diesel generators are loaded with the shutdown loads, and

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1 achieves and maintains a steady-I state voltage of 41601420 volts and a steady-state frequency of i

6011.2 Hr. The testing of i

i the undervoltage logic shall also demonstrate the operability

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j of the 4160-volt load shedding, 1

auto bus transfer circuits, and that the subsequent loading is in accordance with design requirements (* 105 of its i

design intervaT). The simula-tions shall test both the degraded voltage and the loss l

of offsite power relays.

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~d HATCH - UNil 1

3. g -4 Proposed 15/03120/296-88

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LIMITING COND1110N5 FOR OPERA 110N SURFilLLANCE REDulREMENTS l

3.g.A.7.

Losie tratoms (Continued) 4.g.A.7.

Loaic $rstems (Continued) b.2.

Within 5 minutes of shutting down the diesel af ter the diesel has operated 11 hour1.273148e-4 days 0.00306 hours 1.818783e-5 weeks 4.1855e-6 months at 11110 kW or the diesel is at t

normal operating temperature,.

perform surve111 ante Requirement 4.g.A.1.b.) with a simulated loss of offsite power start signal and run the diesel for at least 6 minutes while loaded with shutdown loads. This test is to be performed every le months.

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Once per month, the relays which

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initiate energitation of the emergency buses by the Diese) tenerators when voltage is lost on the emergency buses and startup transformer 1C, will be functionally tested.

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The common accident signal c.1. - Once every le months, each l

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logic system, and undervolt-diesel generator shall be j

age relays and supporting demonstrated operable by system are operable, simulating both a loss of of fsite power in conjunction l

with an accident test signal and a degraded voltage condi-

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tion, and verifying de-energira-1 tion of the emergency buses and l

load shedding from the emergency j

i buses; tne diesel-starts f rom ambient condition on the auto-i I

start signal with permanently connected loads in 112 seconds, energites the auto-connected shutdown (emergency) loads-through the load sequencer, operates for 15 minutes while its generator is loaded with -

the shutdown loads, and achieves i

and maintains a steady-state voltage of a160 1 420 volts and i

a steady-state frequency of 6011.2 Hz.

2.

The undervoltage relays for the start buses shall be calibrated annually for trip and reset voltages and the measurements

recorded, f

3.

Verify, once per 18 months, =

that all diesel generator trips, l

except engine overspeed, low lube oil pressure, and generator differential, are automatically bypassed upon loss of voltage.

on the emergency bus concurrent with an ECCS actuation signal.

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s HAICH - UNIT 1 3.g-4a.

Proposed TS/03120/296-88 i

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LIMITING CONDITIDNS FOR OPERATION

__ SURVEILLANCE REQUIREMENTS Lenie Systems (Continued) 3.9.A.7.

Lonic Systems (Continued) l4.9.A.7.

l 8.

Reauirements f or Continued Doeration 8.

Renuirements for Continued Doeration 5

with Inonerable Connonents With Inocerable Conconents Whenever the reactor is in the Start Continued reactor operation is l.

& Hot $tandby or Run Mode and the permissible with inoperable com-reactor water temperature is greater ponents in accordance with Spect-than 212'F, the availability of aux-fication 3.9.B provided that the t

111ery electrical power shall be as following increased Surveillance specified in 3.9.A., except as spect-Requirements are satisfied.

fled herein. If the requirements of this $pecification cannot be met.

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en orderly shutdown shall be ini-tieted and the reactor shall be placed in the Cold Shutdown Condi-tion within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

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HATCH - UNIT 1 3.9-4b Proposed TS/03124/296-88

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BASES FOR LIM 111NG CONDITIONS FOR OPERA 110N j

i 3.g.

AURlLIARY ELECTRICAL $Y$1LMS j

1he objective of these Specifications is to assure an adequate supply of elet-2 trical power te operate f act11 ties to cool t..e reactor during shutdown and operate i

6ngineered safety features following an accident. There are two sources of aux 111ery AC electrical energy avellable; namely the 230-kV transmission system through the two startup auxiliary transformers and the three diesel generators.

The DC power systems supply emergency DC power required for control.

i A.

Reautrements for Reactor Startun -

In accordance with General Design Criterion 17 of Appendix A to 10 CFR $0 the onsite electric power supplies, including the batteries, and the onsite i

i electrical distribution system shall have sufficient independence and re.

dundancy to perform their safety functions assuming a single failure.

1.

Of f site Power Sources the network interconnection between HNP-1 and the Southern Company trans-mission system will consist of at least four 230-kV transmission lines which are fed f rom dif ferent sections of the Southern Company grid.. The l

system shall be able to withstand the simultaneous loss of any system generator and the most critical transmission line associated with its loss.

l Separation is provided in routing for these transmission lines as they approach the switchyard.

l 1he 230-kV transmission lines tonnect to the two startup auxiliary trans-formers (1C and 10). Startup auxiliary transformer 1D normally provides startup and shutdown power. Startup auxiliary transformer 1C provides backup power to safety features in the event of the loss of transformer

10. The startup auxiliary transformers remain energized to permit auxiliary i

Ioad transfer if required, tech startup auxiliary transformer. in add-l ition to its startup function, is sired to provide 1005 of the emergency AC load to engineered safety features within a few seconds following a design basis accident.

2.

Standby At Power Succiv (Diesel Generators 1A. 18. and IC) l 1he design of the diesel generator systems shall conform to the applicable section of proposed Illt $tandard No. 308. The diesel generators are selected on the basis of their proven reliability and independence as standby power supplies. There are three diesel generator units available for HNP-1 (diesel generator 1B will be shared with HNP-2) and each has I

a 2850-kW continuous rating. The diesel generator units shall not be l

operated in parallel with each other at any time (except per Surveillance Requirement 4.g. A.2.a.10) nor do they have any secondary f unction but shall be utilized solely as a standby power supply.

a.

Operability l

In order to be considered operable the diesel generators shall be capable of providing electric energy for the operation of emergency systems and engineered safety features during and following the f

shutdown of the reactor when the preferred power supply (230-kV transmission network) is not available. This shall include the capability to (1) start and accelerate a number of large motor loads in rapid succession, and be able to sustain l

HAICH - UNIT 1

3. 9 -7 Proposed 15/03120/296-0

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BA$Es f 0R LIM 111NG COND1110NS FOR OPf RAll0N 3.9. A.2.a.

Doerability (Continued) the loss of any such load, and (2) supply continuously the sum of the loads needed to be powered at any one time. The diesel engines shall start auto-matically upon the loss of of f site power. The diesel generator for one load group shall never be automatically interconnected under accident con-ditions with the diesel generator of any other load group.

b.

Diesel Batterv (125 Volt)

Lech diesel generator shall have its own 125-volt battery for operating auxiliary motors and controls reeutred for starting, tech battery shall have adequtte storage capacity to carry the required load for approxi-mately a 2-hour period without recharging.

c.

Battery Charcer lach diesel generator 125-volt battery shall have its own battery charger.

One spare battery charger will be provided as a backup for the five diesel generator systems.

d.

Diesel Fuel lach of the five diesel generators is provided with a storage tank and a day tank. The 33,000 gallons required to be maintained in each of the fuel oil tanks represents a total volume of oil sufficient to operate any four diesel generators at 3250 kW for a period of 7 days. This is based on a conservative expected fuel consumption of 240 gallons per hour per engine.

The onsite fuel capacity will last longer than the time it would take to replenish the onsite supply f rom of f site sources (which is less than 7 days).

Valving is available so that fuel oil can be transferred between fuel oil storage tanks. However, administrative controls shall be in place to limit long-term total diesel generator load to 5 13.000 kW, and to limit individual diesel generator loading to 5 3250 kH.

Each diesel geRarator shall be supplied f uel from its own day tank. ~ The 1,000 gallon fuel capacity of each day tank is a suf ficient supply for approximately 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months of full load operation.

3.

125/250 Volt DC toeraency Power Svstem (Plant Batteries 1 A and 18)

The 125-volt DC emergency system shall provide power to a suf ficient number of vital DC loads necessary for safe shutdown. Two separate plant batteries shall be furnished, each with its own battery charger. One spare battery charger will be provided as a backup. Each of the two sets of plant batteries has storage capacity to carry the required load for approximately a 2-hour period without recharging. Power f rom the plant batteries is required under all operating conditions. The maximum requirement on the batteries is based on a design basis accident at design power with a concurrent loss of AC power.

4.

Emeroency 4160 Volt Buses (1E.1F. and 1G)

The emergency 4160-volt buses shall distribute AC power to the required engineered safety feature equipment. The normal feeds to the emergency buses (1E.1F, and 1G) are taken f rom the startup auxiliary transformers, if neither startup auxiliary transformer is available, buses 1[,1F, and 16 can be energized f rom the standby diesel generators.

HAICH - UNIT 1 3.9-8 Proposed TS/0312q/296-0 i

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c' ENCLOSURE 3 PLANT HATCH - UNIT 2 NRC DOCKET 50-366 OPERATING LICENSE NPF-5^

REQUEST TO REVISE TECHNICAL SPECIFICATIONS:

EMERGENCY DIESEL GENERATORS PAGE CHANGE INSTRUCTIONS Removed Pace Insert Paae 3/4 8-1 3/4-8-1 3/4 8-2 3/4 8-2 3/4 8-3 3/4 8-3' 3/4 8-3a 3/4 8-3a 3/4 8-3b 3/4 8-3b 3/4 8-4 3/4 8-4 3/4 8-5 3/4 8-5 3/4 8-9 3/4 8-9 j

B 3/4 8-1 B 3/4 8-1 l

0344V HL-790-E3-2

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3 3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES A.C. SOURCES - OPERATING LIMITING CONDITION FOR OPERATION 3.8.1.1 As a minimum, the following A.C. electrical power sources shall be OPERABLE:

a.

Two physically independent circuits between the offsite trans-mission network and the onsite Class IE distribution system, and b.

Three separate and independent diesel generators *, each with:

1.

A separate day tank containing a minimum of 900 gallons **

of fuel, 2.

A separate fuel storage tank containing a minimum of 33,000 gallons of fuel, and l

3.

A separate fuel transfer pump.

APPLICABILITY:

CONDITIONS 1, 2, and 3.

ACTION:

a.

With one offsite circuit of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining offsite A.C. source by performing Surveillance Require-ment 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter, and performing Surveillance Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

Restore at least two offsite circuits to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , b.

With one diesel generator of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a within I hour and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months there-after, and by performing Surveillance Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

Restore at least three diesel generators to

A diesel generator may be inoperable for up to I hour during surveillance testing without entering the Actions, while control is taken locally to allow gradual startup and to allow the diesel engine to be barred (rolled) oVer.

- During verification of fuel transfer pump operability with the day tank containing < 900 gallons, the associated diesel generator may be inoperable for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months without entering the Actions.

HATCH - UNIT 2 3/4 8 I Proposed TS/03104/292-83.

't ELECTRICAL p0WER SYSTEMS LIMITING CONDITION FCR OPERATION (Continued)

ACTION (Continued)

OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , With one offsite circuit and one diesel generator of the above c.

required A.C. electrical power sources ~ inoperable, demonstrate the OPERABILITY of the_ remaining A.C. Sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereaf ter, and by performing Surveillance Requirement-4.B.1.1.2.a.4 within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months . Restore at least one of the in-operable sources to OPERABLE status within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

Restore the' other A.C. power source (offsite circuit or diesel generator set) to OPERABLE status in accordance with the provisions of Section 3.8.1.1, Action State-ments a or b, as appropriate, from the time of initial loss.

d.

With two of the above required offsite A.C. circuits inoper-able, demonstrate the OPERABILITY of three diesel generators by performing Surveillance Requirement 4.8.1.1.2.a.4 within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless the diesel generators are already operating; restore at least one of the inoperable offsite sources to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be in at least HOT SHUTDOWN with the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

With only one offsite source re-stored, restore the remaining offsite circuit to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the time of initial loss or be in at least HOT SHUTDOWN within the next 12-hours and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

With two of the above required diesel generators inoperable, e.

demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirements 4.8.1.1.1.a. and 4.B.1.1.2.a.4 within I hour and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter.

Restore at least one of the inoperable diesel generators to OPERABLE status within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months aad in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

Restore three diesel generators to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the time of initial loss or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

HATCH - UNIT 2 3/4 8-2 Proposed TS/0310q/292-83

7 O

s

'6 ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS 4.8.1.1.1 Each of the above required independent circuits between the offsite transmission network and the onsite Class IE distribution system shall be:

a.

Determined OPERABLE at least once per 7 days by verifying correct breaker alignments and indicated power availability, and b.

Demonstrated OPERABLE at least once per 18 6nonths during shutdown by transferring, manually and automatically, unit power supply from the normal circuit to the alternate circuit.

4.8.1.1.2 Each diesel generator shall be demonstrated OPERABLE:

a.

In accordance with the frequency specified in Table 4.8.1.1.2-1 on a STAGGERED TEST BASIS by:

1.

Verifying the fuel level in the day fuel tanks.

2.

Verifying the fuel level in the plant fuel storage tank.

3.

Verifying the fuel transfer pump can be started and transfers fuel from the storage system to the day tank.

4.

Verifying that each diesel starts from ambient condition by gradually loading the generator to 1710-2000 kW*,

and operating for 2 60 minutes, and maintains a steady-state voltage of 4160 + 420 volts and a steady-state frequency of 60 + 1.2 Ez.**

5.

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

Momentary variations outside this band shall not invalidate the test.

- For the IB (swing) diesel, a single test will satisfy the requirements for Unit 1 Specification 4.9.A.2.a.1 and Unit 2 Specification 4.8.1.1.2.a.4, with the diesel connected to each unit's emergency bus for 2 30 minutes.

HATCH - UNIT-2 3/4 8-3 Proposed TS/0310q/292-83

4 i

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) l l

6.

Verifying the pressure in both diesel air start receivers j

to be 2 225 psig.

l t

b.

At least once per 184 days by verifying the diesel starts from ambient t

condition and accelerates to synchronous speed in s 12 seconds is loaded to 2764-2825_kW* for diesel generator 2A, 2360-2425 kW* for diesel i

generator IB,'and 2742-2825 kW* for diesel generator 2C in s 120 seconds, achieves and maintains a steady-state voltage of 4160 1 420 volts and a steady-state frequency of 6011.2 HZ, and operates for 2 60 minutes thereafter.**

t c.

At least once per 92 days by verifying that a sample of diesel i

fuel from the fuel storage tank, obtained in accordance with ASTM-D270-65, is within the acceptable limits specified in Table 1 of ASTM 0975-74 when checked for viscosity, water and sediment.

d.

At least once per 18 months during shutdown by:

1.

Subjecting the diesel to an inspection in accordance with 1

procedures prepared in conjunction with its manufacturer's recommendations for this class of standby service.***

l i

t

Momentary variations outside this band shall not invalidate the test.

1 t

(

- A single 6-month (184-day) test for the IB diesel will satisfy the requirements for Unit 1 Specification 4.9 A.2.a.2, and Unit 2 Specification 4.8.1.1.2.b with the diesel connected to each unit's emergency bus for 2 30 minutes. The 6-month test for the IB diesel will be initiated using the starting circuitry on one unit for one 6-month test, and the starting circuitry on the other unit at the next 6-month test.

- - For the IB diesel generator, a single diesel inspection every 18 months will satisfy the requirements of Unit 1 Specification 4.9.A.2.a.3 and Unit 2 Specification 4.8.1.1.2.d.1.

HATCH-UNIT 2 3/4 8-3a Proposed TS/0310q/292-83

.i a

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 2.

Verifying that the automatic load sequence timer is i

OPERABLE with the interval between each load block within i 10% of its design interval.

3.

Verifying the diesel generator capability to reject its largest single shutdown (emergency) load while maintaining voltage at 4160 1 420 volts.

For diesel generator 2A, this will be the 2A Residual Heat Removal Service Water (RHRSW) pump at rated flow; for diesel generator IB this would be either the IC or 2C RHRSW pump at rated flow; for diesel generator 20 this would be either the 2B or 20 RHR$W pump at l

rated flow. During these load rejection tests, the diesel.

generator shall not exceed the nominal speed plus 75% of the difference between nominal speed and the overspeed trip

(

setpoint, or 15% above nominal speed, which ever is lower.*

For the IB diesel generator a single partial load rejection test every 18 months will satisfy the requirements of Unit 1 Specification 4.9.A.2.a.4 and Unit 2 Specification 4.8.1.1.2.d.3.

HATCH - UNIT 2 3/4 8-3b Proposed TS/0310g/296-83

. ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 4.

Verifying the diesel generator capability to reject a load of at least 2775 kW without tripping. The generator voltage shall not exceed 4800 volts during and follow 1,.g the load rejection."

5.

$1mulating a loss of offsite power by itself.within 5 minutes of shutting down the diesel after the diesel has operated k I hour at t 1710 kW or the diesel is at normal operating.

temperature, and:

a) Verifying de-energization of the emergency busses and load shedding from the emergency busses.

b) Verifying the diesel starts from ambient condition on the.

auso-start signal, energizes the emergency busses with permanently connected loads in 5 12 seconds, energizes the auto-connected shutdown loads through the load sequencer, operates for 2 5 minutes while its generator is loaded with the shutdown (emergency) loads, and achieves' and maintains a st ady-state voltage of 4160 2 420 volts and a ste.dy-state frequency of 60 1 1.2 Hz.

6.

Verifyir.g that on'an ECCS actuation test signal, without loss of l

offsite power, the diesel generator starts on the. auto-start signal and operates on standby for :. 5 minutes.

7.

Verifying that on a simulated loss of the diesel generator, with offsite power not available, the loads are shed from the emergency busses and that subsequent loading of the diesel generator is.in accordance with design requirements.

8.

Simulating with separate tests: 1) a degraded voltage condition I

and 2) a loss of offsite power in conjunction with an ECCS actuation test signal, and a) Verifying de-energization of the emergency ousses'and load shedding for the emergency busses.

b) Verifying the diesel starts from ambient condition on the-auto-start signal, energizes the emergency busses with j

permanently connected loads in 5 12' seconds, energizes-the auto-connected' shutdown (emergency) loads through the load sequencer, operates for k 5 minutes while.its generator is loaded with the emergency loads, and achieves i

and maintains a steady-state voltage of 4160 1 420 volts and a steady-state frequency of 60 1 1.2 Hz, c) Verifying that all diesel generator trips, except engine overspeed. low lube oil pressure, and generator.

differential.are automatically bypassed upon-loss of voltage on the emergency-bus concurrent with an ECCS

)

actuation signal.

(

i

For the IB diesel generator a single full load rejection test every 18 months will satisfy the requirements of Unit 1 Specification 4.9.A.2.a.5 and Unit 2 Specification 4.8.1.1.2.d.4.

HATCH-UNIT 2 3/4 8-4 Proposed TS/03104/292-27

i-ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 9.

Verifying that the diesel generator 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 generator shall be loaded to it 2950 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 loaded to 2775-2825 kW*.**

10. Verifying that the auto-connected loads to each diesel generator do not exceed the 2000-hour rating of 3100 kW.

I

11. Verifying the-diesel generator's capability to:

a) Synchronize with the offsite power source while the generator is loaded with _its emergency loads uron a simulated restoration-of.offsite power, b) Transfer its loads to the offdite power source, and c) Proceed through its shutdown sequence.

12. Verifying that with the diesel generator operating in a

.l test mode (connected to its-bus),~a simulated LOCA actuation signal overrides the-test mode by:

(1) returning the diesel generator to standby operation and (2) auto-matica11y energizing the emergency loads with offsite power.

13. 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'.

e.

At least once per 10 years or af ter any modifications which l

j could affect diesel generator interdependence by starting both diesel generators simultaneously, during shutdown,'and verifying that both diesel generators accelerate to synchronous speed in s 12 seconds, i

i

" Momentary variations outside this band shall not invalidate the test.

- For the IB diesel generator, a single 24-hour load test every 18 months l

will satisfy the requirements of Unit l' Specification 4.9. A.2.a.6 and Unit 2 Specification 4.8.1.1.2.d.9.

HATCH - UNIT 2 3/4 8-5 Proposed TS/0310q/292-L23

=C-

.-D L

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 I

be OPERABLE:

4 a.

One circuit between the offsite transmission network and the-onsite Class IE distribution system, and b.

One diesel generator with:

1.

A day tank containing a minimum.of 900 gallons

of fuel, 2.

A fuel storage tank containing a minimum of 33,000 gallons l

of fuel, and 3.

A fuel transfer pump.

APPLICABILITY: CONDITIONS 4 and 5.

ACTION:

With less than the above required A.C. electrical power sources OPERABLE, suspend all operations involving CORE ALTERATIONS, irradiated fuel handling, positive reactivity changes or operations that have the

_j potential of draining the reactor vessel.

The provisions of Specifica-tion 3.0.3 are not applicable, j

SURVEILLANCE REQUIREMENTS 4

s i

4.8.1.2 At least the above required A.C. electrical power sources shall be demonstrated OPERABLE per Surveillance Requirements 4.8.1.1.1, 4.8.1.1.2, except for the requirement of 4.8.1.1.2.a.5, 4.8.1'1.3 and 4.8.1.1.4.

1 i

During verification of fuel transfer pump operability with the day tank containing < 900 gallons, the associated diesel generator may be inoperable for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months without entering the Actions.

HATCH - UNIT 2 3/4 8-9 Proposed TS/0310g/292 l l

a s.

6 3/4.8 ELECTRICAL POWER SYSTEMS BASES The OPERABILITY of the A.C.~ and D.C. power sources and associated distribution systems during operation ensures that sufficient power will

~be available to supply the safety related equipment required for: (1) the safe shutdown of the facility, and (2) the mitigation and control of accident conditions within the facility. The minimum'specified indepen--

dent and redundant A.C. and D.C. power-sources and distribution systems satisfy the requirements of General Design Criterion 17 of Appendix "A" to-

.t 10 CFR Part 50.

The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation commensurate with the level of degradation. The OPERABILITY of the power sources are consistent with the initial condition assumptions of the i

accident analyses and are based upon maintaining at least one of the onsite A.C. and D.C. power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of l

offsite power and single failure of the other onsite A.C. source.

Each of the five diesel generators is provided with a' storage tank and a day tank. The 33,000 gallons required to be maintained in each of the fuel oil tanks represents a total volume of oil' sufficient to operate' any four diesel generators at 3250 kW for a period of'7 days. This is i

based on a conservative expected fuel consumption of 240 gallons per hour per engine.

The onsite fuel capacity will last longer than the time it would take to replenish the-onsite supply from offsite' sources (which is

,< 7 days). Valving-is available_so that fuel oil can be transferred between fuel oil storage tanks. However ' administrative controls shall be in place to limit long-term total diesel generator load to s 13,000 kW,,

and to limit individual diesel generator loading to s 3250 kW.

The OPERABILITY of the minimum specified A.C. and D.C. power sources and associated distribution. systems during shutdown and refueling ensures.

that: (1) the facility can be maintained in the shutdown or refueling-condition for extended time periods, and (2) sufficient instrumentation i

and control capability is available for monitoring and maintaining the-i facility status.

The surveillance requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations of Regula--

l tory Guide 1.9, " Selection of Diesel Generator Set Capacity for Standby Power Supplies," March 10, 1971, Regulatory Guide 1.108, " Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systems I

at Nuclear Power Plants," Revision 1. August 1977, and Generic Letter

'~';_

84-15, " Proposed Staff Actions to Improve.and Maintain Diesel Generator Reliability," July 2, 1984.

PrimarycontainmentelectrEaipenetrationsahTpenetrationconductors are protected by either de-energizing circuits not required during reactor operation or demonstrating the OPERABILITY of primary and backup overcurrent' protection circuit breakers by periodic surveillance.

l i

HATCH - UNIT 2 B 3/4 8-1 Proposed TS/0311q/292-0 l>

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ML20005F842

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