ML20128P396

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Proposed Tech Spec Sections 3.8.1.1 & 4.8.1.1.2 Reducing Number of Cold Fast Starts for Emergency Diesel Generators & Surveillance Testing of Synchronization W/Offsite Power Source
ML20128P396
Person / Time
Site: Davis Besse Cleveland Electric icon.png
Issue date: 05/28/1985
From:
TOLEDO EDISON CO.
To:
Shared Package
ML20128N181 List:
References
TAC-55852, TAC-59930, NUDOCS 8506030525
Download: ML20128P396 (4)
v • d • e


Text

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3/4.8 ELECTRICAL POWER SYSTEMS' 3/4.8.1 A.C. SOURCES OPERATING LIMITING CONDITION FOR OPERATION 3.8.1.1 As a minimum, the following A.C. electrical power sources shall be OPERA 8LE:

a.

Two independent circuits between the offsite transmission network and the onsite Class lE distribution system, each consisting of; 1.

One OPERABLE 345 KV transmission line, 2.

One DPERA8L*c 345-13.8 KV startup transformer, and 3.

One OPERABLE 13.8 KV bus, and b.

Two separate and independent diesel generators each with:

1.

A separate day fuel tank containing a minimum volume of 4000 gallons of fuel,

't 2.

A separate fuel storage system containing a minimt.m volume of 32,000 gallons of fuel, and

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3.

A separate. fuel transfer pump.

APPLICASILITY: MODES 1, 2, 3 and 4.

ACTION:

i a.

With either an offsite circuit or diesel generator of the above l

required A.C. electrical power sources inoperable, demonstrate the OPERASILITY of the remaining A.C. sources by performing Surveillance Requirementg 4.8.1.1.1.a ;.-d t.0.1.1.2.;.t within one hour and at least once per 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> thereafterpQastore at least two offsite circuits and two diesel generators to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT STANDBY within the l

next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 j

hours.

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b.

With one offsite circuit and one diesel generator of the above required A.C. electrical power sources inoperable, demonstrate the OPERASILITY of the remaining A.C. sources by performing Survaillance Requirement)( 4.8.1.1.1.a =d i.0.1.1.2.:. ' within

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and Surve111ance Requirement 4.8.1.1.2.a.4 within 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />se 4

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ELECTRICAL POMER SYSTEMS ACTION (Continued) one hour and at least once per 8 ' hours thereaf te estore at least one of the inoperable sources to OPERABLE status within l

12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> or be in at least HOT STANCBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTOOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

Restore at least two offsite circuits and two diesel generators to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from the time of initial loss or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTOOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />, c.

With two of the above required offsite A.C. circuits inoperable, demonstrate the OPERABILITY of two diesel generators by performing Surveillance Requirement 4.8.1.1.2.a.4 within -en houtrand at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter, unless the diesel generators are already operating; restore at ieast one of the inoperable offsite sources to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

With only one offsite source restored, restore at least two offsite circuits to OPERABLE statJs within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from time of initial loss or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUT 00WM within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

d.

With two of the above required diesel generators inoperable,

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demonstrate 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 <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; restore at least one

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of the, inoperable diesel generaters to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in at least HOT STANCBY.within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTOOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

Restore at least two diesel generators to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from time of initial loss or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLANCE REQUIREMENTS 4.8.1.1.1 Each of the above requirad 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 availablity.

. and b.

Demonstrated OPERABLE at least once per 18 months during shutdown by transferring (manually and automatically) unit power supply to each of the 345 KV transmission lines.

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and4SurveillanceRequirement 4.8.1.1.2.a.4 within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />; W ffffeeAJG j

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1UAVtittAMCf atqUIR(P(NTS (Continued) 4.8.1.1.2 _ tach diese1_g enerator shall be_ decens trated_0PERA86.E*%-

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'At least once per 3'l days on a STACCERED TEST BASIS, if Surveillance 8*

Requirements 4.8.1.1.2.C has not been performed within the previous 31 days y,.

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Verifyrng the fuel level la the day fuel tank.

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2.

Verifying the fuel level in the fuel storage tank.

3.

Yerifying the fuel transfer sc p can to started and transfers fuel frore the storage systa:s to tre day tank.

g, Verifying the diesel starts and accelerates up to 900 RPM. preceded by an engine prelube and/or appropriate other varmup procedures.

i 5.

Verifying the generator can be synchronized, and

" 8.

Verifying the diesel generator is aligned to provide stand y pcwer to the associated essential busses.

.. F.-

Verifying that the automatic inad sequence tirer is OPERABLE with each load sequence tir.e within + 10*. af

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its required value.

b.

At least once per g2 days by verifying that a sa ale of diesel fuel frcm 'the fuel storage tank is istthin the acceptable Ilmits specified in Table 1 of ASTM 0975 68 when checked for wiscosity, water and sedirent.

E.

At leasc once par 13% days on a STAGGE' RED TEST BASIS by l

1.

Verifying tre fuel level in the day fuel tank.

2.

Verifying the fuel level in the fuel storage tant.

3.

Yerifying tre fuel transfer pu p can be started and transfers fuel frors the storage system to the day tank.

l 4.

Verifyless tre diesel starts frem athient condittsn and a cc el e ra t e s,t e a t l ea st 100 r;:n i n 1 10 seconds.

5.

Vert ryte; tre ;ecerator is syrchronf red. Toaded to.,1000 I

he, and c;:erates for e,40 minutes, and 6.

Vert rying the diesel generator is aligned to provide i

stand 3y pc.ee to the associated essential busses.

7.

Vert fytng that the automatte load sequence tirer is CPERAstt with each load sequence tiee withle

  • 10'. of 4 ts required value.

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ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) d.

At ienst once per la months durins shutdown by:

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1.

Subjecting the diesel to an inspection in accordance with i

procedures prepared in conjunction with its manufacturer's reconsnendations for this class of standby service, 2.

Verifying the generator capability to reject a load equal to:

the largest single amergency load supplied by the generator without tripping.

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3 Simulating a loss.of offsite power in conjunction with a safety injection actuation test signal, and:

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(a) Verifying de-energization of the essential busses and load shedding from the essential busses, b)

Verifying the diesel starts from ambient condition on the auto-start signal, energizes the essential 7(

busses with permanently connected loads, energizes t\\

the auto-connected essential loads through the load sequencer and operates for > 5 minutes while its

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generator is loaded with the essential loads, c)

Verifying that all diesel generator trips, except engine overspeed and generator differential. are automatically bypassed upon loss of voltage on the essential bus and/or an SFAS test signal.

1 4.

Verifying the diesel generator operates for > 60 minutes i

while loaded to > 2000 kw.

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5.

Verifying that the auto-connected loads to each diesel generator do not exceed the 2000 hour0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> rating of 2838 kw.

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DAVIS-BESSE. UNIT 1 3/4 8-4

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