Text

Proposed Tech Specs 3/4.8 Re Electrical Power Sys
	ML20086E308
Person / Time
Site:	Millstone
Issue date:	11/22/1991
From:	; NORTHEAST NUCLEAR ENERGY CO.
To:	;
Shared Package
ML20086E306	List: B13960, Withdraws 900328 Proposed Changes Related to Surveillance Requirements 4.8.1.1.2.a.6 & 4.8.1.1.2.g.7,in Ref to TS Section 3/4.8 for Emergency Diesel Generator Reliability & Availability,Per 911028 Conference Call.Revised TS Encl; ML20086E308;
References
	NUDOCS 9111270174
	Download: ML20086E308 (25)
	v • d • e

. _ . . _ _ _ _ . _ . _ _ _ . _ _ _ - . . . _ . _ _ . _ . _ . .

t 1

t Docket No. 50-421 fullf_Q L

Attachment. 1 Millstone Nuclear Power Station, Unit No. 3 Proposed Revision to Technical Specifications 3/4.8 Electrical Power Systems l

I i-f i

November 1991 1

1 ^

( 7111270174 911122 FDR ADOCK 05000423 P' FDN

4

. JNDEX LIMITING CONDITIONS FOR OPERATION AND SVRVCILLANCE REQUIREMENTS 1[C. TION PAGE 3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES Operating ................................................ 3/4 8 1 TABLE 4.8 1 DIESEL GENERATOR TEST SCHEDULE ........................ 3/4 8 9 Shutdown ................................................. '/4 8-10 3/4.8.2 0.C. SOURCES Operating ................................................ 3/4 8-11 TABLE 4.8-2a BATTERY SURVEILLANCE REQUIREMENTS .................... 3/4 8-13 TABLE 4.8 2b BATTERY CHARGER CAPACITY ....................... ..... 3/4 8-14 Shutdown ................................................. 3/4 8-15 3/4.8.3 ONSITE POWER DISTRIBUTION Operating ................. .............................. 3/4 8-16 Shutdown ................................................. 3/4 8-18 3/4.8.4 ELECTRICAL EQUIPMENT PROTECTIVE DEVICES Containment Peretration Conductor Overcurrent Protective Devices ...........................'............ 3/4 8-19 Motor-0perated Valves Therma' Overload Protection . . . . . . . . 3/4 8-21 Motor-Operated Valves Thermal Overload Protection Not Bypassed ...........................,,................ 3/4 8-22 A. C.-Circuits inside Containment ........................ 3/4 8-23 3/4.9 REFUEllNG OPERAT10H1 3/4.9.1 BORON CONCENTRATION ...................................... 3/4 9-1 3/4.9.2 INSTRUMENTATION .......................................... 3/4 9-2 l~ -3/4.9.3 DECAY TIME .......................................... .... 3/4 9-3 3/4.9.4 CONTAINMENT BUILDING PENETRATIONS ........................ 3/4 9-4 l 3/4.9.5 COMMUNICATIONS ........................................... 3/4 9-5 i

MILLSTONE - UNIT 3 xi

, 3/_48 fMCTRICAL POWER SYSTEM J /4 . P_.1 A,C. SOURCES QPERATING t IMIilNG COND!T10N FOLOPERA110N 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 transmission network and the onsite Class lE Distribution System, and

b. Two separate and independent diesel generators, each with:

, 1) A separate day tank containing a minimum volume of 205 gallons of fuel,

2) A separate fuel Storage System containing a minimum volume of 32,760 gallons of fuel,

3) A separate fuel transfer pump,

4) Lubricating oil storage containing a minimum total volume of 280 gallons of lubricating oil, and

5) Capability to transfer lubricating oil from storage to the diesel generator unit.

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTION:

a. With one offsite circuit inoperable, demonstrate the OPERABillTY of the remaining A.C. sources by performing Surveillance Requirement 7

4.8.1.1.1.a witl.ir I hour and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter, if either diesel generator has not been successfully tested within the past 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , demonstrate its OPERABILITY by performing Surveillance Requirement 4.8.1.1.2.a.5 separately for each such ,

diesel generator within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Restore the offsite circuit 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months ,

b. With one diesel generator inoperable, demonstrate the OPERABILITY of the A.C. offsite 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 thereaf ter; and if the diesel generator became inoperable due to any cause other than preplanned preventative maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE diesel generator by performing Surveillance Requirement 4.8.1.1.2.a.5 within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months "; restore the diesel generator 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

Thi, test is required to be completed regardless of when the inoperable diesel generator is restored to OPERABILITY.

e MILLSTONi. - UNIT 3 3/4 8-1 0054

~ '

ELECTRICAL POWER SYSTEMS tlMITit{G COBDITION FOR OPERATION ACTION (continued)

c. With one offsite circuit and one diesel gener m e inoperable, demonstrate the OPERABIL11Y of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a within one hour and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; and if the diesel generator became inoperable due to any cause other than preplanned preventative maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE diesel generator by performing Surveillance Requirement 4.8.1.1.2.a.5 within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months *; restore one of the inoperable 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUIDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . Restore the other A.C. power source (offsite circuit or diesel generator) to OPERABLE status in accordance with the provisions of Section 3.8.1.1 Action Statement a or b, as appropriate with the time requirement of that Action Statement t,ased on the time of initial loss of the remaining inoperable A.C. power source. A successful test of diesel generator OPERABILITY per Surveillance Requirement 4.8.1.1.2.a.5 performed under this Action Statement for an OPERABLE aiesel generator or a restored to OPERABLE diesel generator satisfies the diesel generator test requirement of Action Statement & or b.

d. With one diesel generator inoperable, in addition to ACTION b or c above, verify that:

1. All required systems, subsystems, trains, components, and devices that depend on the remaining OPERABLE diesel generator as a source of emergency power are also OPERABLE, and

2. When in MODE 1, 2, or 3, the steam-driven auxiliary feedwater pump is OPERABLE.

If these conditions are not satisfied within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months , be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months ,

e. With two of the required offsite A.C. circuits inoperable, demon-strate the OPERABILITY cf two diesel generators by sequentially performing Surveillance Requirement 4.8.1.1.2.a.5 on both diesel generators 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 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . Following restoration of one offsite source, follow Action Statement a with the time requirement of that Action Statement based on the time of initial loss of the remaining inoperable offsite A.C.

circuit. A successfui test (s) of diesel generator OPERABILITY per Surveillance Requirement 4.8.1.1.2.a.5 performed under this Action Statement for the OPERABLE diesel generators satisfies the diesel generator test requirement of Action Statement a.

Ubis test is required to be completed regardless of when the inoperable diesel generator is restored to OPERABILITY.

MILLSTONE - UNIT 3 3/4 8-2 0054

c . ,

. II.ECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION 1

ACTION fcontinuedl

f. With two of the above required diesel generators inoperable, demon-strate the OPERABILITY of two offsite A.C. circuits by performing Surveillance Requirement 4.8.1.1.1.a within one hour and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; restore one of the inoperable diesel generat M 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . Following restoration of one diesel generator unit, follow Action Statement b with the time requirement of that Action Statement based on the time of initial loss of the remaining inoperable diesel generator. A successful test of diesel generator OPERABILITY per Surveillance Requirement 4.8.1.1.2.a.5 performed under this Action Statement for a restored to OPERABLE diesel generator satisfies the diesel generator test requirement of Action Statement b.

SURVEILLANCE REOUIREMENTS 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, indicated power availability, and

b. Demonstrated OPERABLE at least once per 18 months 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 on a STAGGERED TEST BASIS by:*

1) Verifying the fuel level in the day tank,

2) Verifying the fuel level in the fuel storage tank,

3) Verifying the fuel transfer pump starts and transfers fuel from the storage system to the day tank,

4) Verifying the lubricating oil inventory in storage,

5) Verifying the diesel starts from ambient condition and gradually accelerates to at least 508 rpm with generator voltage and frequency at 4160 420 volts and 60 0.8 Hz. The diesel generator shall be started for this test by using one of the following signals:

a) Manual, or

Testing shall be conducted in accordance with the manufacturer's recom-mendations regarding engine prelube and warmup procedures, and as appli-cable regarding loading requirements.

MILLSTONE - UNIT 3 3/4 8-3 Amendment No. J9 0054

4 ELECTRICAL P0}lfE 'YHfjn EVRVEILL ANCE REQMJJEWIllrontinuedi b) Simulated loss-of-offsite power by itself, or c) Simulated loss-of offsite power in conjunction with an EST Actuation test signal, or d) An ESF Actuation test signal by itself.

6) Verifying the generator is synchronized and gradually loaded to greater than or equal to 4986 kW and operates for at least 60 minutes, and

7) Verifying the diesel generator is aligned to provide standby power to the associated emergency busses,

b. At least once per 184 days the diesel generator shall be started

and accelerated to at least 508 rpm in less than or equal to 11 seconds. The generator voltage and frequency shall be 4160 1 420 volts and 60 1 0.8 Hz within 11 seconds after the start signal. The generator shall be synchronized to the associated emergency bus, loaded to greater than or equal to 4986 kW in less than or equal to 60 seconds, and operate for at least 60 minutes. The diesel generator shall be started for this test using one of the signals .n Surveillance Requirement 4.8.1.1.2.a.5. This test, if it is performed so it coincides with the testing required by Surveillance Requirement 4.8.1.1.2.a.6, may also serve to concurrently meet those requirements as well,

c. At least once per 31 days and after each operation of the diesel where the period of operation was greater than or equal to I hour by checking for and removing accumulated water from the day tank;

d. At least once per 31 days by checking for and removing accumulated water from the fuel oil storage tanks;

e. By sampling new fuel oil in accordance with ASTM-04057 prior to addition to storage tanks and:

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

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

Testing shall be conducted in accordance with the manufacturer's recom-mendations regarding engine prelube and warmup procedures, and as applicable regarding loading requirements.

MILLSTONE - UNIT 3 3/4 8-4 0054

1 l

\ ..

a .

ELECTRICAL PO!!ER SYSTEMS SURVEILLANCE RE0VIREMENTS (Continued) b) A kinematic viscosity at 40*C of greater than or equal to 1.9 centistoke.5, but less than or equal to 4.1 centistokes (alternatively, Saybolt viscosity, SUS at 100'F of greater than or equal to 32.6, but not less than or equal to 40.1), if gravity was not determined by comparison with the supplier's certification; c) A flash point equal to or greater than 125'F; and d) A clear and bright appearance with proper color when tested in accordance with ASTM-04176-82.

2) By verifying within 30 days of obta'd ag the sample that the other properties specified in Table 1 of ASTM D975-81 are met when tested in accordance with ASTM-D975-81 except that the analysis for sulfur may be performed in accordance with ASTM-D1552-79, ASTM D2622-82 or ASTM-04294-83.

f. At least once every 31 days by obtaining a sample of fuel oil in l accordance with ASTM-D2276-78, and verifying that total particulate contamination is less than 10 mg/ liter when checked in accordance with ASTM-D2276-78, Method A; 9 At least once per 18 months, during shutdown, 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 generator capability to reject a load of greater than or equal to 595 kW while maintaining voltage at 4160 i 420 volts and frequency at 60 3 Hz;

3) Verifying the generator capability to reject a load of 4986 kW without tripping. The generator voltage shall not exceed 4784 volts during and following the load rejection;

4) Simulating a loss-of-offsite power by itself, and:

a) Verifying deenergization of the emergency busses and load shedding from the emergency busses, and b) Verifying the diesel starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 11 seconds, energizes the auto-connected shutdown loads through the load sequencer and operates for greater than or equal to 5 minutes while its generator is loaded with the shutdown loads. After energization, the steady-state voltage and frequency of the emergency busses shall be maintained at 4160 1 420 volts and 60 1 0.8 Hz during this test.

The provisions of Specification 4.0.6 are applicable.

1 MILLSTONE - UNIT 3 3/4 8-5 Amendment No. A 0054

ad 4 f1LLlRICAL PfRER SYSTEMS MRVElllANCE RE0VIREMENTS (Continued)

5) Verifying that on an ESF Actuation test signal, without loss-of-offsite power, the diesel generator starts on the auto-start signal and operates on standby for greater than or equal to 5 minutes. The generator voltage and frequency shall be 4160 420 volts and 60 1 0.8 Hz within 11 seconds after the auto-start signal; the steady-state generator voltage and frequency shall be maintained within these limits during this test;

6) Simulating a loss-of-offsite power in conjunction with an ESF Actuation test signal, and:

a) Verifying deenergization of the emergency busses and load shedding from the emergency busses; b) Verifying the diesel starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 11 seconds, energizes the auto-connected emergency (accident) loads through the load sequencer and operates for greater than or equal to 5 minutes while its generator is loaded with the emergency loads. After energization, the steady-state voltage and frequency of the emergency busses shall be maintained at 4160 1 420 volts and 60 i 0.8 Hz during this test; and c) Verifying that all automatic diesel generator trips, except engine overspeed, lube oil pressure low (2 of 3 logic) and generator differential, are automatically bypassed upon loss of voltage on the emergency bus concur-rent with a Safety injection Actuation signal.

7) Verifying 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 greater than or equal to 5485 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 greater than or equal to 4986 kW. The generator voltage and frequency shall be 4160 420 volts and 60 1 0.8 Hz within 11 seconds after the start signal; the steady-state generator voltage and frequency shall be maintained within these limits during this test. Within 5 minutes after completing this 24-hour test, perform Specification 4.8.1.1.2.g.6)b);*

If Surveillance Requirement 4.8.1.1.2.g.6)b) is not satisfactorily completed, it is not necessary to repeat the preceding 24-hour test, t Instead, the diesel generator may be operated at 4986 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.

MILLSTONE - UNIT 3 3/4 8-6 Amendment No. JE 0054

o .

. ELECTRICAL POWER SYSTEMS SURVEILLANCE RE0VIREMENTS (Continued)

8) Verifying that the auto-connected loads to each diesel genera-tor do not exceed the 2000-hour rating of 5335 kW;

9) Verifying the diesel generator's capability to:

a) Synchronize 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.

G

10) Verifying that with the diesel generator operating in a test mode, connected to its bus, a simulated Safety injection signal 7 overrides the test mode by: (1) returning the diesel generator to standby operation, and (2) automatically energizing the emergency loads with offsite power;

11) Verifying that the fuel transfer pump transfers fuel from each fuel storage tank to the day tank of each diesel via the installed cross-connection lines;

12) Verifying that the automatic load sequence timer is OPERABLE with the interval between each load block within i 10% of its design interval; and

13) Verifying that the following diesel generator lockout features a prevent diesel generator starting:

a) Engine overspeed, _

b) Lube oil pressure low (2 of 3 logic),

c) Generator differential, and d) Emergency stop,

h. At least once per 10 years or after any modifications which could affect diesel generator interdependence by starting both diesel generators simultaneously, during shutdown, and verifying that both diesel generators accelerate to at least 508 rpm in less than or equal to 11 seconds; and

i. At least once per 10 years by:

1) Draining each fuel oil storage tank, removing the accumulated sediment and cleaning the tank using a sodium hypochlorite solution, and MILLSTONE - UNIT 3 3/4 8-7 0054

1 o -o ELECTRICAL POWER SYSTEMS SVRVElllANCE REQUIREMENTS (Continued)

2) Performing a pressure test of those portions of the diesel fuel oil system designed to Section 111, subsection ND of the ASME Code at a test pressure equal to 110% of the system design pressure.

4.8.1.1.3 Renorts - All diesel generator failures, valid or nonvalid, shall be reported to the Commission in a Special Report pursuant to Specification 6.9.2 within 30 days. Reports of diesel generator failures shall include the information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977. If the number of failures in the last 100 valid tests (on a per Diesel Generator basis) is greater than or equal to 7, the report shall be supplemented to include the additional information recommended in Regulatory Position C.3 b of

- Regulatory Guide 1.108, Revision 1, August 1977.

l t

L L

L l-MILLSTONE - UNIT 3 3/4 8-8 Amendment No. JE 0054 i

,6 4

. JARtE 4.8-1 Q11.SILGEERATOR TEST SCHEDULE Number of Failures in Number of f ailures in Last 20 Valid Tests last 100 Valid Tests

Test frecuency 11 s4 Once per 31 days 2 2** 25 Once per 7 days

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

For the purposes of determining the required test frequency, the previous test failure count may be reduced to zero if a complete diesel overhaul to.like-new conditions is completed, provided that the overhaul including appropriate post-maintenance operation and testing, is specifically approved by the manufacturer and if acceptable reliability has been demonstrated. The reliability criterion shall be the successful completion of 14 consecutive tests in a single series. Ten of these tests shall be in accordance with Surveillance Requirement 4.8.1.1.2.a.5, four tests in accordance with Surveillance Requirement 4.8.1.1.2.b. If this criterion is not satisfied during the first series of tests, any alternate criterion to be used to transvalue the failure count to zero requires NRC approval.

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

MILLSTONE - UNIT 3 3/4 8-9 0054

ELECTRICAL POWER SYSTEMS A. C. SOURCES SillllRQWli LJ11111NG CONDITION FOR OPERATION 3.8.1.2 As a minimum, the following A. C. electrical power sources shall be OPERABLE:

a. One circuit between the offsite transmission network and the Onsite Class lE Distribution System, and

b. One diesel generator with:

1) A day tank containing a minimum volume of 205 gallons of fuel, s

2) A fuel storage system containing a minimum volume of 32,760 gallons of fuel,

3) A fuel transfer pump,

4) Lubricating oil storage containing a minimum total volume of 280 gallons of lubricating oil, and

5) Capability to transfer lubricating oil from storage to the diesel generator unit.

APPLICABillTY: MODES 5 and 6.

A[ TION:

With less than the above minimum required A. C. electrical power sources OPERABLE, immediately suspend all operations involving CORE ALTERATIONS, ,

positive reactivity changes, movement of irradiated fuel, or crane operation with loads over the fuel storage pool, and within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , depressurize and vent the Reactor Coolant System through a greater than or equal to 5.4 square inch vent, in addition, when in MODE 5 with the reactor coolant loops not filled, or in MODE 6 with the water level less than 23 feet above the reactor b vessel flange, immediately initiate corrective action to restore the required sources to OPERABLE status as soon as possible.

SURVE!LLANCE RE0VIREMENTS 4.8.1.2 The above required A.C. electrical power sources shall be demonstrat-ed OPERABLE by the performance of each of the requirements cf Specifications 4.8.1.1.1, 4.8.1.1.2 (except for Specification 4.8.1.1.2a.6), and 4.8.1.1.3.

i MILLSTONE - UNIT 3 3/4 8-10 Amendment No. JE 0054

o . .

ELECTRICAL P0BER SYSTEMS 3/4.8.2 D.C. SQ!)R(LS OPERATlfl0 L WlTING CONDITION FOR OPERATION 3.8.2.1 As a minimum, the following D.C. electrical sources shall be OPERABLE:

a. 125-volt Battery nk 301A-1, and an associated full capacity charger,

b. 125-vol t Bat : - -2 and_an associated full capacity charger,

c. 125-volt Batter: an associated full capacity chargar, and

d. 125-volt Battery Bank . m issociated full capacity charger.

SPPLICABILITY: MODES 1, 2, 3, and 4.

ACTION:

a. With either Battery Bank 301A-1 or 3018-1, and/or one of the required full capacity chargers inoperable, restore the inoperable battery bank and/or-full capacity charger 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

b. With either Battery Bank 301A 2 or 3018-2 inoperable, and/or one of the required full capacity chargers inoperable, restore the inoper-ablo battery bank and/or full capacity charger 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 STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

SURVEILLANCE RE0VIREMENTS 4.8.2.1 Each 125-volt battery bank and charger shall be demonstrated OPERABLE:

l- a. At least once per 7 days by verifying that:

l l 1) The parameters in lable 4.8-2a meet the Category A limits, and

2) The-total battery terminal voltage is greater than or equal to 129 volts on float charge.

MILLSTONE - UNIT 3 3/4 8-11 0054

[LECTRICAL POWER SYSTEMS SVRVEllLANCE RE0VIREMENTS (Continued)

b. At least once per 92 days and within 7 days after a battery discharge with battery terminal voltage below 110 volts, or battery overcharge with battery terminal voltage above 150 volts, by verify-ing that:

1) The parameters in Table 4.8-2a meet the Category B limits,

2) There is no visible corrosion at either terminals or connec-tors, or the connection resistance of these items is less than 150 x 10'5 ohm, and

3) The average electrolyte temperature of six connected cells is above 60*F.

c. At least once per 18 months by verifying that:

1) The cells, cell plates, and battery racks show no visual indication of physical damage or abnormal deterioration,

2) The cell-to-cell and terminal connections are clean, tight, and coated with anticorrosion material,

3) The resistance of each cell-to-cell and terminal connection is less than or equal to 150 x 10~5 ohm, and

4) Each battery charger will supply at least the amperage indi-cated in Table 4.8-2b at 125 volts for at least 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

d. At least once per 18 months, during shutdown, by verifying that the battery capacity is adequate to supply and maintain in OPERABLE status all of the actual or simulated emergency leads for the design duty cycle when the battery is subjected to a battery service test;

e. At least once per 60 months, during shutdown, by verifying that the battery capacity is at least 807. of the manufacturer's rating when ,

subjected to a performance discharge test. Once per 60-month interval this performance discharge test may be performed in lieu of the battery service test required by Specification 4.8.2.ld.; and

f. At least once per 18 months, 61 ring shutdown, by giving performance discharge tests of battery capacity to any battery that shows signs of degradation or has reached 85% of the service life expected for the application. Degradation is indicated when the battery capacity crops more than 10% of rated capacity from its average on previous performance tests, or is below 90% of the manufacturer's rating.

MILLSTONE - UNIT 3 3/4 8-12 0054

TABLE 4.8-La BATTERY SURVElltANCE REQUIREMENTS CATEGORY A CATEGORY B PARAMET E' LIMITS FOR EACll LIMITS FOR EACil ALLOWABLE (3I DESIGNATED PILOT CONNEC1ED CELL VALUE FOR EACil CELL CONNECTED CELL Electrolyte > Minimum level > Minimum level Above top of Level indication mark, indication mark, plates, and and < \" above and < \" above not overflowing maximum level maximum level indication mark indication mark Float Voltage 2 2.13 volts 2 2.13 volts (6) > 2.07 volts Not r.: ore than 0.020 below the average of all Specific 2 1.195 connected cells Gravity 54) > 1.200(5)

~

Average of all Average of all connected cells connected cells

> 1.205 1.195(5)

TABLE NOTATIONS (1) For any Category A parameter (s) outside the limit (s) shown, the battery may be considered OPERABLE provided that within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months all the Cate-gory B measurements are taken and found to be within their allowable values, and provided all Category A and B parameter (s) are restored to within limits within the next 6 days.

(2) For any Category B parameter (s) outside the limit (s) shown, the battery may be considered OPERABLE provided that the Category B parameters are within their allowable values and provided the Category B parameter (s) are restored to within limits within 7 days.

(3) Any Category B parameter not within its allowable value indicates an inoperable battery.

(4) Corrected for electrolyte temperature and level.

(5) Or battery charging current is less than 2 amps when on charge.

(6) Corrected for average electrolyte temperature.

MILLSTONE - UNIT 3 3/4 8-13 0054

4 e4 TABLE 4.8-2h DAIJIRY CHARGER CAPACITY CHARGER AMPERAGE 301A-1 200 301A-2 50 301A-3 200 301B 1 200 3018-2 50 301B-3 200 MILLSTONE - UNIT 3 3/4 8-14 0054

ELECTRICAL POWER SJSlf33

p. C. SOURCES SHUTDOWN LIMITING CONDITION FOR OPERATION 3.8.2.2 As a minimum, one 125-volt battery bank and its associated full-capacity charger shall be OPERABLE.

AEPllCABILIII: MODES 5 and 6.

6(lLQ3:

With the required battery bank and/or full-capacity charger inoperable, immediately suspend all operations involving CORE ALTERATIONS, positive reactivity changes, or movement of irradiated fuel; initiate corrective action to restore the required battery bank and full-capacity char]er to OPERABLE status as soon as possible, and within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , depressurize and vent the Reactor Coolant System through a 5.4 square inch vent.

SVRVElllANCE RE0VIREMENTS 4.8.2.2 The above required 125-volt battery bank and full-capacity charger shall be demonstrated OPERABLE in accordance with Specification 4.8.2.1, MILLSTONE - UNIT 3 3/4 8-15 Amendment No. JE 0054

ELECTRICAL POWER SYSlDik 3/4.8.3 ONSITE POWER DISTRIBUTION OPERATING LIMITING CONDITION FOR OPERATLON 3.8.3.1 The following electrical busses shall be energized in the specified manner:

a. Train A A.C. Emergency Busses consisting of:

1) 4160-Volt Emergency Bus #340, and

2) 480-Volt Emergency Bus #32R, 32S, 32T, and 32Y.

b. Train B A.C. Emergency Busses consisting of:

1) 4160-Volt Emergency Bus #340, and

2) 480-Volt Emergency Bus #320, 32V, 32W, and 32X.

c. 120-Volt A.C. Vital Bus #VIAC-1 energized from its associated inverter connected to D.C. Bus #301A-l*,

d. 120-Volt A.C. Vital Bus #VIAC-2 energized from its associated inverter connected to D.C. Bus #3018-l*,

e. 120-Volt A.C. Vital Bus #VIAC-3 energized from its associated inverter connected to D.C. Bus #301A-2*,

f. 120-Volt A.C. Vital Bus #VIAC-4 energized from its associated inverter connected to D.C. Bus #301B-2*,

g. 125-Volt D.C. Bus #301A-1 energized from Battery Bank #301A-1,

h. 125-Volt D.C. Bus #301A-2 energized from Battery Bank #301 A-2,

i. 125-Volt D.C. Bus #3018-1 energized from Battery Bank #3018-1, and J. 125-Volt D.C. Bus #301B-2 energized from Battery Bank #301B-2.

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTION:

a. With one of the required trains of A.C. emergency busses not fully energized, reenergize the division within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months ,

b. With one A.C. vital bus either not energized from its associated inverter, or with the inverter not connected to its associated D.C.

bus: (1) reenergize the A.C. vital bus within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN

Two inverters may be disconnected from their D.C. bus for up to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months as necessary, for the purpose of performing an equalizing charge on their associated battery bank provided: (1) their vital busses are energized, and (2) the vital busses associated with the other battery bank are energized from their associated inverters and connected to their associated D.C. bus.

MILLSTONE - UNIT 3 3/4 8-16 0054

..-o . .

ELECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION ACTION (Continued 1 within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months ; and (2) reenergize the A.C. vital bus from its associated inverter connected to its associated D C. bus within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

c. With one D.C. bus not energized from its associated battery bank, reenergize the D.C. bus from its associated battery bank within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

SURVElllANCE RE0VIREMENTS 4.8.3.1 The specified busses shall be determined energized in the required manner at least once per 7 days by verifying correct breaker alignment and indicated voltage on the busses.

MILLSTONE - UNIT 3 3/4 8-17 0054

ELECTRICAL POWER SYSl[BS ONS11E POWER DISTRI@ lLQ3 SHV100WN LIMITING CONDITION FOR OPERATION 3.8.3.2 As a minimum, the following electrical busses shall be energized in the specified manner:

a. One train of A.C. emergency busses consisting of one 4160-volt and four 480-volt A.C. emergency busses,

b. Tta 120-volt A.C. vital busses energized from their associated inverters connected to their respective D.C. busses, and

c. Two 125-volt D.C. busses energized from their associated battery banks.

A_PPLICABillTY: MODES 5 and 6.

ACILQB:

With any of the above required electrical busses not energized in the required manner, immediately suspend all operations involving CORE ALTERATIONS, posi-tive reactivity changes, or movement of irradiated fuel, initiate corrective action to energize the required electrical bustes in the specified manner as soon as possible, and within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , depressurize and vent the RCS through at least a 5.4 square inch vent.

SURVE_liLANCE RE0VIREMENTS 4.8.3.2 The specified busses shall be determined energized in the required manner at least once per 7 days by verifying correct breaker alignment and indicated voltage on the busses.

MILLSTONE - UNIT 3 3/4 8-18 Amendment No. JE 0054

e ELECTRICAL POWER SYSTEMS 3/4.8.4 ELECTRICAL E0VIPMENT PROTECTIVE DEVIL [S CONTAINMENT PENETRAT104,fDNDUCTOR OVERCURRENT PROTECIIVE DEVICES LIMITING CONDITION FOR OPERATION 3.8.4.1 All containment penetration conductor overcurrent protective devices shall be OPERABLE.

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTION:

With one or more of the containment penetration conductor overcurrent protec-tive device (s) inoperable:

a. Restore the protective device (s) to OPERABLE status or deenergize the circult(s) by tripping the associated backup circuit breaker or racking out or removing the inoperable circuit breaker within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , declare the affected system or component inoperable, and verify the backup circuit breaker to be tripped or the inoperable circuit breaker racked out or removed at least once per 7 days thereafter; or

b. Be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

EURVEllLANCE RE0VIREMENTS 4.8.4.1 All containment penetration conductor overcurrent protective devices shall be demonstrated OPERABLE:

a. At least once per 18 months:

1) By verifying that the medium voltage (4-15 kV) circuit breakers are OPERABLE by selecting, on a rotating basis, at least 10% of the circuit breakers of each voltage level, and performing the following:

a) A CHANNEL CAllBRATION of the associated protective relays, b) An integrated system functional test which includes simulated automatic actuation of the system and veriffing that each relay and associated circuit breakers and control circuits function as designed, and MILLSTONE - UNIT 3 3/4 8-19 Amendment No. /E, E/

0054

e ELECTRICAL POWER SYSTEMS EURVEILLANCE RE0VIREMENTS (Continued) c) For each circuit breaker found inoperable during these functional tests, an additional representative sample of at least 10% of all the circuit breakers of the inoperable type shall also be functionally tested until no more failures are found or all circuit breakers of that type have been functionally tested.

2) By selecting and functionally testing a representative sample of at least 10% of each type of lower voltage circuit breakers.

Circuit breakers selected for functional testing shall be selected on a rotating basis.

Testing of air circuit breakers shall consist of injecting a current with a value equal to 300% of the pickup of the long-time delay trip element and 150% of the pickup of the short-time delay trip element, and verifying that the circuit breaker operates within the time delay band width for that current specified by the manuf:cturer. The instantaneous element shall be tested by injecting a current equal to i 20%

of the pickup value of the element and verifying that the circuit breaker trips instantaneously with no intentional time del ay.

Holded case circuit breakers and unitized starters (a frame size of 250 amps or less) shall be tested for long time delay at 300% as described above, and in addition tested for the instantaneous trip by injecting a current value which falls within +40% (of the upper limit) and -25% (of the lower limit) of the manufacturers instantaneous trip current range and verifying the breaker trips instantaneously with no intentional tiae delay. _ For those molded case circuit breakers / unitized starters used in 480V circuits, if single pole instantaneous test results fall outside these tolerances, additional instantaneous testing shall be conducted using two poles in series, including A-8, B-C and C-A phase combinations. All combination test results shall fall within the specified tolerances.

Circuit breakers found inoperable during functional testing shall be restored to OPERABLE status prior to resuming operation. For each circuit breaker found inoperable during these functional tests, an additional representative sample of at least 10% of all the circuit breakers of the inoperable type shall also be functionally tested until no more failures are found or all circuit breakers of that type have been func-tionally tested.

b. At least once per 60 months by subjecting each circuit breaker to an inspection and preventive maintenance in accordance with procedures prepared in conjunction with its manufacturer's recommendations.

MILLSTONE - UNIT 3 3/4 8-20 Amendment No. p 0054

i ELECTRICAL POWER SYSTEMS MOTOR-0PERATED VALVES THERMAL OVERLOAD PROTECTION LIMITING CONDITION FOR OPERATION 3.8.4.2.1 Each thermal overload protection bypassed only under accident conditions for safety-related motor-operated valves shall be bypassed by an OPERABLE bypass device integral with the motor starter.

APPLICABILITY: Whenever the motor-operated valve is required to be OPERABLE.

ACTION:

With the thermal overload protection for one or more of the above required valves not bypassed under conditions for w~nich it is designed to be bypassed, restore the inoperable device or provide a means to bypass the thermal over-load within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , or declare the affected valve (s) inoperable and apply the appropriate ACTION Statement (s) of the affected system (s).

SURVEILLANCE RE0VIREMENTS 4.8.4.2.1 The thermal overload protection for the above required valves shall be verified to be bypassed by the appropriate accident signal (s) by perfor-mance of a TRIP ACTUATION DEVICE OPERATIONAL TEST of the bypass circuitry during COLD SHUTDOWN or REFUELING at least once per 18 months.

MILLSTONE - UNIT 3 3/4 8-21 Amendment No. /E l 0054 l ._. - _ _--- -

I ELECTRICAL POWER SYSTEMS MOTOR-0PERATED VALVES THERMAL OVERLOAD PROTECTION NOT BYPASSED LIMITING CONDITION FOR OPERATION 3.8.4.2.2 Each thermal overload protection not bypassed under accident conditions for safety-related motor-operated valves shall be operable.

APPLICABillTY: Whenever the motor-operated valve is required to be OPERABLE.

ACTION:

With the thermal overload protection for one or more of the above required valves inoperable, bypass the inoperable thermal overload within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months ; restore the inoperable thermal overload to OPERABLE status within 30 days or declare the affected valve (s) inoperable and apply the appropriate ACTION Statement (s) for the affected system (s).

SVRVEILLANCE RE0VIREMENTS ,

4.8.4.2.2 The thermal overload protection for the above re. ired valves shall be demonstrated OPERABLE at least once per 18 months and fo, swing maintenance on the motor starter by the performance of a CHANNEL CAllBRATION of a repre-sentative sample of at least 25% of all thermal overloads for the above required valves.

MILLSTONE - VNIT 3 3/4 8-22 Amendment No. /E 0054

9 gy c- w ELECTRICAL POWER SYSTEMS A.C. CIRCUITS INSIDE CONTAINMENT LIMITING CONDITION FOR OPERATION 3.8.4.3 At least the A.C. circuits for the following valves inside contain-ment shall be de-energized:

Device Number Valve 3SIL*MV8808A Accumulator Isolation 3SIL*MV8808B Accumulator Isolation 3SIL*MV8808C Accumulator Isolation

-3SIL*MV8808D Accumulator Isolation APPLICABillTY: MODES 1, 2, 3, and 4 ACTION:

With any of the above required circuits energized, trip the associated circuit breaker (s) within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months .

SVRVEILLANCE RE0VIREMENTS 4.8.4.3 Each of the A.C. circuits for the above listed valves shall be deter-mined to be de-energized at least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months

by verifying that the associated circuit breakers are in the tripped condition, i

1

(

l i

! *Except at least once per 31 days if locked, sealed or otherwise secured in l the tripped condition.

l l

MILLSTONE - UNIT 3 3/4 8-23 0054

ML20086E308

Text

Navigation menu

Search