Text

Proposed Changes to Tech Spec 3/4.8 Re Electrical Power Sys
	ML20040B981
Person / Time
Issue date:	10/28/1981
From:	; NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:	;
Shared Package
ML20040B972	List: ML20040B971; ML20040B974; ML20040B977; ML20040B979; ML20040B981;
References
	NUDOCS 8201270132
	Download: ML20040B981 (3)
	v • d • e

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,o-PROPOSED TECHNICAL SPECIFICATION CHANGES r.

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3/4.'8 ELECTRICAL POWER SYSTEMS:...

3/4.8.1 A.C. SOURCES ' '

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As a minimum, thenfollowing A.C..el'ectrical pA~wMsources shaN.-'..M

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be OPERABLE:'

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. c.y Two physically independent circuits between the offsite transmissi.on a.

network and the onsite Class lE distribution system, and b.

Two separate-and independent diesel generators each with:

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1.

Separate day and erigine-mounted fuel tanks' containing.a minimum volume of gallons! of; fuel,-

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'2.~.',A -separate. fuel. storage system containing a minimum vo

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. gallons of fuel, and

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A separate fuel transfer pump..

A lubricating oil storage. system containing a minimum volume of w ~

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gallons of. lubricating oil.

..6 ' ~~ APPLICABILITY:

MODES 1, 2, 3 and 4.

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ACTION:

With either an offsite circuit or diesel generator of the above a.

required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance

' Requirements 4.8.1.1.1.a and 4.8.1.1.2.a.4 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 at least two offsite circuits and two diesel generators to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months .

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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 E

SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

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b.

With one offsite circuit and one diesel generator of the above on required A.C. electrical power sources inoperable, demonstrate the h

OPERABILITY of'the remaining A.C. sources by performing Surveillance om SS Requirements 4.8~.1.1.1.a and 4.8.1.1.2.a.4 within one hour and at

@@S 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 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 SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

Restore at least two offsite circuits and two diesel generators.to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from

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. ELECTRICAL POWER SYSTEMS ACTION: (Continued) c.

With two of the above required offsite A.C. circuits inoperable,

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demonstrate the OPERABILITY of two diesel generators by performing Surveillance Requirement 4.8.1.1.2.a.4 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, unless the diesel generators are already operating; restore at Teast 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 .

With only one offsite source restored, restore at least two of.fs.i.te circuits.to.0PERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from

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7 time of initial loss 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 .

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With two of the abovelequired diesel generators inoperable, demon-d.

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 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 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 .

Restore at.least two diesel generators to OPERABLE status within 72. hours from time of in.itial a

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loss or be in least HOT STANDBY within the next 6. hours and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . d f.

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SURVEILLANCE REQUIREMENTS 4.8.1.1.1 Each of the above required independent circuits between the offsite transmission network and the onsite Class lE distribution system shall be:

a.

Determined OPERABLE at least once per 7 days by verifyina 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 and engine-mounted fuel

tank, e

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ELECTRICAL POWER SYSTEMS SURVEILLANCE REOUIREMENTS (Continued)

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2.

Verifying the fuel level in the fuel storage t k,

Verifying the fuel transfer pump can be started and transfers 3.

fuel from the storage system to the day and engine-mounted

tank, J

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.M J-4.ME ' ' 4."'. Verify the lubricating',oilhel infthe lubriEa' ting '6iCWY@T.T'2 Odd J:fff=$$1JN5.fistorage -tank,'!T5936%TP 1:

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5 Verifying the dies'el starts from ambient condition and accelerates to at lea'st (900) rpm in less than or equal to (10) seconds.

The generator voltage and frequency shall be

+

volts and

+

Hz within seconds after the start signal.

The diesel generator shall be started.or this f

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test by using the following signals which shall be changed on a rotating basis:

a)

Manual.

b)

Simulated loss of offsite poweg by itself.

c)

Simulated loss of offsite power in conjunction with an ESF

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actuation test signal.

m, d)

An ESF actuation test signal by itself.

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6 Verifying the generator is synchronized, loaded to greater than

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or equal to (continuous rating) in less than or equal to (60) seconds, and operates for greater than or equal to 60 minutes, 7.

Verifying the diesel generator is aligned to prcvide standby power to the associated emergency busses, and b.

At least once per 92 days by verifying that a sample of diesel fuel from the fuel storage tank obtained in accordance with ASTM-D270-65, is within the acceptable limits specified in Table 1 of ASTM D975-74 when checked for viscosity, water and sediment.

At least once per 18 months during shutdown by:

c.

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 (largest single emergency load) kw while volts and frequency at maintaining voltage at

+

Hz.

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_ - - _ _ _

ML20040B981

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