ML19347F101

Tech Specs 3.8.1 & 4.8.1 Re Electrical Power Sys & Ac Sources for Diesel Generators

ML19347F101
Person / Time
Site:	Farley
Issue date:	05/10/1981
From:	ALABAMA POWER CO.
To:
Shared Package
ML19347F095	List: ML19347F094 ML19347F101
References
NUDOCS 8105150245
Download: ML19347F101 (13)

Text

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3/43 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES

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~ OPERATING LIMITING CONDITION FOR OPEPATION 3.8.1.1 As a minimum, the following A.C. electrical power. sources shall be OPERABLE:

a. Two physically independent circuits from the offsite transmission

-- ne.twork to the switchyard and two physically indipendent circuits from the switchyard to the onsite Class 1E distribution system, and

b. Two separate and independent diesel generator sets (one 4075 Kw and one 2850 Kw) each with:

1. Separate day tanks containing a minimum volume of 900 gallons of fuel for the 4075 kw diesel generators and 700 gallons of fuel for the 2850 kw diesel generators.

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2. A separate fuel transfer pump for each diesel.

c. A fuel storage system consisting of four independent storage tanks each containing a minimum of 25,000 gallons of fuel.

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

ACTION:

_ a. With either an offsite circuit or a diesel .,enerator set of the above required A.C. electrical power sources inoperable, demon-strate the OPERABILITY of the remaining A.C. sources by per-formingSurveillanceRequirements4.8.1J.1.aand4.8.1.1.2.a.4 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 two offsite circuits and both diesel generator sets to OPERABLE status within 72* hours or be in at least HOT STANDBY l 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 />.

b. With one offsite circuit and one diesel generator set of the above required A.C. electrical power sources inoperable, demon-strate the OPERABILITY of the remaining A.C. sources by perform-ing Surveillance Requirements 4.8.1.1.1 and 4.8.1.1.2.a.4 within one hour and at least nnce per 8, ours thereafter; l restore at least one of the inoperable sources to OPERABLE status within 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 STANDCY 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 />. Restore at least two offsite' circuits and both diesel generator sets to OPERABLE status within 72* hours from the time l of initial loss or be in at least H0T 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 />.

• 0ne time only exception for repair of Diesel IC - the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> action statement ~

for operability of Diesel IC may be extended to a period of 13 days provided Unit 2 is in modes 2, 3, 4, 5 or 6; and Diesel IC is returned to OPERABLE status as soon as maintenance is completed. The provisions of specification 3.0.4 are not applicable for this one time change.

• • 0ne time only exception during repair of Diesel 1C - the 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />

. interval test is extended to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

FARLEY-UNIT 1 3/4 8-1 81D515 0 2

ELECTRICAL POWER SYSTEMS ACTION (ContinuTd)

c. With two of the above required offsite A.C. circuits inoper-able, demonstrate the OPERABILITY of both diesel generator sets by performirg Surveillance Requirement 4.8.1.1.2.a.4 within one hou. 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, 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 <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 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 />.

d. With both of the above required diesel generator sets inoperable, 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 hourfthereafter; restore at l least one of the inoperable diesel generator sets to ODEUBLE 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 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 />. Restore both diesel generator sets to OPERABLE status within 72* hours from time of initial loss or be in at least HOT l 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 independent circuits between the off site transmission network and the onsite Class 1E distribution syster. shall be:

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

b. Demonstrated OPERABLE at least once per 18 months during shut-down by transferring unit power supply from the normal circuit to the alternate circuit.

4.8.1.1.2 Each diesel generator set shall be demonstrated OPERABLE:

a. At least once per 31 days, on a STAGGERED TEST BASIS, by:

1. Verifying the fuel level in the day tank,

2. Verifying the fuel level in the fuel storage tanks,

• 0ne time only exception for repair of Diesel IC - the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> action statement , I, for operability of Diesel IC may be extended to a period of 13 days provided Unit 2'is in modes 2, 3, 4, 5 or 6; and Diesel 1C is returned to OPERABLE status as soon as maintenance is completed. The provisions of specification 3.0.4 arenot applicable for this one time change.

• • 0ne time only exception during repair of Diesel IC - the 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> interval test is extended to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

FARLEY-UNIT 1 3/4 8-2

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3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES OPERATING LIMITING CONDITION FOR OPERATION

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3.8.1.1 As a minimum, the following A.C.-clectrical power sources shall be OPERABLE:

a. Two physically independent circuits between the offsite transmission network to the switchyard and two physically independent circuits from the switchyard to the onsite Class lE distribution system, and

b. Two separate and independent diesel generator sets (Set A: DG l-2A and DG-IC, Set B: DG-2B and DG-2C) each with:

1. Separate day tanks containing a minimum volume of 900 gallons of fuel for the 4075 kw diesel generators and 700 gallons of fuel for the 2850 kw diesel generator.

2. A separate fuel transfer pump for each diesel.

c. A fuel storage system consisting of four, independent storage

_ _ tanks each containing a minimum of 25.000 gallons of fuel.*

APPLICABILITY: MODES 1, 2, 3 and 4.

. 1 ACTION:

a. With an u.rsite circuit 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

. hours thereaf ter; restore at least two offsite circuits 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 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 />.

- p b.

With one diesel generator set inoperable, demonstrate the operability of the remaining A.C. sources by performing Surveillance Requirements 4.8.1.)g)hereafter..a 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> t and 4.8.1.1.2.a.4 Restore within both diesel one hour generator andOPERABLE sets'to at least once per status within 72*80urs or comply with the following:

1) 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 />.

• 0ne inoperable fuel storage tank is equivalent to one inoperable diesel generator set.

• • 0ne time only exception for repair of Diesel IC - the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> action statement "

for operability of Diesel IC may be extended to a period of 13 days provided Unit 2 is in modes 2, 3, 4, 5 or 6; and Diesel 1C is returned to OPERABLE status as soon as maintenance is com,nleted. The provisions of specification 3.0.4 are not applicable for this one time change.

• • • 0ne time only exception during repair of Diesel 1C - the 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> interval test is extended to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

FARLEY-UNIT 2 3/4 8-1

ELECTRICAL POWER SYSTEMS ,

r \i ACTION (Continued) ,

, 2) One diesel generator set may be made inoperable for up to 14 days to perform scheduled maintenance and testing on diesel generators  ;

IC (or 2C) provided all the following are satisfied: ,

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' a) Unit 1 is in MODE 5 or 6 and. appropriate technical specifica- l

.tions covering the diesel generator sets are satisfied. -)

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b) W remaining Unit 2 diesel generators 1-2A, 28,1C (or 2C) are OPERABLE. .

c) The service water system is recirculated to the pond and s.urveillance requirement 4.7.6.2.1 is verified prior to removing 1C (or 2C) from service and once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter.

d) Diesel Generator.1C (or 2C) is re',urned to OPERABLE status as soon as maintenance is. completed.

Otherwise, 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 />.

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'c. With one offsjte circuit and one diesel generator set of the above required A.C. electrical power sources inoperable, demonstrate the

!___ OPERABILITY of the remaining A.C. sources by performing Surveiliance 1.1.1.a and 4.8.1.1.2.a.4 within one hour and at Requirements least once per 84.8* lours thereafter; restore at least one of the  !

inoperab'c sources to OPERABLE status within 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 HO~. 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 S30TDOWN 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

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circuits and both diesel generator sets to OPERABLE status within 72* hours 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 SHUTDOWN within the following 30, hours. .

d. With two of the above required offsite A.C. circuits inoperable, demonstrate the OPERABILITY of both diesel generator sets by performing Surveillance Requirement 4.8.1.1.2.a.4 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, 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 <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 both offsite circuits 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 sithin the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

• 0ne time only exception for repair of Diesel IC - the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> actior, statement for operability of Diesel IC may be extended to a period of 13 days provided Unit 2 is in modes 2, 3, 4, 5 or 6; and Diesel IC is returned to OPERABLE status as soon as maintenance is completed. The provisions of specification 3.0.4 are not applicable for this one time change.

• • 0ne time only exception during repair of Diesel IC - the 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> interval test is extended to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

FARLEY.> NIT 2 3/4 8-2

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- ELECTRICAL POWER SYSTEMS ACTION: (Continued) ,

, e. With both of.the above required diesel generator sets inoperable, l demonstrate the OPERABILITY of two offsite A.C. circuits by {

performing Surveillam:e Requirerent 4.8.1.1.1.a within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and i at least once per 8-hour 1*thereafter; restore at least one of the l l inoperable diesel generator sets to OPERABLE status within 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />s- i 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 />. Restore both diesel generator sets to OPERABLE status within 72* hours from time of I initial loss or be in 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 VNTS 4.8.1.1.1 Each of-tne aoove required independent circuits between the offsite transmission network and the onsite Class 1E 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 nonths during shutdown by transferring unit power supply from the normal circuit to the alternate circuit.

4.8.1.1.2 Each diese; generator shall be demonstrated OPERABLE:

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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 tanks,

3. Verifying the fuel transfer pump can be ste ted and transfers fuel from the storage system to the day tank,

4. Verifying the diesel starts from ambient condition and accelerates to at least 900 rpm, for the 2850 kw generator and 514 rpm for the 4075 kw generators, in less than or equal to 10 seconds. The generator voltage and frequency shall be 13952

. volts and 2 57 Hz within 10 seconds after the start signal.

5. Verifying the generator is synchronized, loaded to greater than or equal to its continuous rating, and operates for greater than or equal 60 minutes,

• 0ne time only exception for repair of Diesel IC - 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> action statement .

for operability of Diesel IC may be extended to a period of 13 days provided Unit 2 is in modes 2, 3,- 4, 5 or 6; and Diesel IC is returned to OPERABLE

,tatus as soon as maintenance is completed. The provisions of specification 3.0.4 are not applicable for this one time change.

• • 0ne time only exception during repair of Diesel IC - the 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> interval test is extended to 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

FARLEY-UNIT 2 3/4 8-3 L...

EVALUATION FOR CHANGE TO THE A.C.. SOURCES - OPERATION TECHNICAL-SPECIFICATION ,

I. BACKGROUND On May 8,1981 at 5:17 P.M. while performing surveillance tests on diesel generator 1C it was determined that the jacket cooling water had been introduced into the number 10 cylinder. At this time, diesel

_ generator IC was declared inoperable and the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> ACTION statement was invoked. Af ter exceeding the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> ACTION statement, both Units 1 and 2 must be placed in HOT STANDBY. Preliminary investigations revealed that an excess of 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> will be required to return diesel generator 1C to OPERABLE status.

II. REFEREN E_

Technical Specification 3.8.1.1.b for Units 1 and 2.

III. BASES A. Introduction The onsite emergency ac power supply for Units 1 and 2 consists of five diesel generators which supply standby power for _4160V emergency service buses F, G, H. J. K, and L of each unit. These buses provide power to the F emergency loads.

The emergency loads are divided between the emergency buses of each unit in two balanced, redundant load groups so that the failure of a redundant group does not prevent the safe shutdown of both reactors.

The 4160V emergency buses F, H and K of each unit and their associated loads are designed as the redundant load group Train A.

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The 4160V emergency buses G, J and L of each unit and their associated loads are designated as the redundant load group Train B.

Diesel generators 1-2A and IC are assigned to the redundant load group Train A, while diesel generators 18, 2B and 2C are assigned to the redundant load group Train B.

Diesel generator IB is uniquely assigned to Unit 1, while diesel generator 28 is uniquely assigned to Unit 2. Diesel generators 1-2A,1C and 2C are shared between the two units. See attached FSAR Fig. 3-3.3.

-The capacity of the diesel generators ensures that sufficient power will be available tosprovide for the functioning of required emergency loads -

during the worst loading situations.

-w - ,vL ,mm m e_ --m.m - - - -

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c B. Discussion cf Impact of Loss of Diesel Generator IC Table 1 delineates the resultant loss of equipment with D.G. IC out of service for the following cases:

1. Loss of offsite power - Units 1 and 2

2. Loss of offsite' power - Unit 1

__ 3. Loss of offsite power - Unit 2

4. Loss of offsite power- Units 1 and 2 concurrent with a loss of coolant accident - Unit 1

5. Loss of offsite power - Units 1 and 2 concurrent with a loss of coolant accident - Unit 2

6. Loss of offsite power and a loss of coolant accident - Unit 1.

Normal shutdown on Unit 2.

7. Loss of offsite power and a loss of coolant accident - Unit 2.

Normal shutdown on Unit 1.

The loss of diesel generator IC has no impact on either unit for case 2, 3, 6 or 7 due to the fact that D.G.1-2A loads the essential buses and D.G. 1C does not pick up any emergency buses. The loss of D.G.1C for case 1 results in a loss of Train A loads for Unit 2. The

~~ lossUnits for of D.G.1C 2 or 1 for cases 4 or 5 results in a loss of Train A loads respectively.

For the cases where there is a loss of coolant accident for either unit, D.G. 'l-2A aligns itself to the unit which is undergoing a LOCA.

Figure 1 provides a description of the Farley emergency electrical distribution loads.

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In addition to reasons stated above for acceptability of the extension of the outa ' for diesel generator IC, the following should be noted.

The probability of the loss of offsite power during this period is not significantly increased.

In addition, extensive load tests have been recently completed on the diesel generators providing emergency power to Unit 2.

Since the Farley Nuclear Plant Unit 2 became critical on May 8,1981, there has not been sufficient time for the generation of a source of decay heat on this core. Thus there is no significant decay heat re.noval required during the interval requested to repair diesel generator IC.

During this interval, Unit 2 will be restricted to modes 2, 3, 4, 5 or 6.'

B'. (Continued) ,

Unit 2 Technical Specification 'section 3.8.1.1.b.2 of Action Statement

. allows diesel generator 1C to be inoperable for up to 14 days for scheduled maintenance and testing if the Unit 1 is in mode' 5 or 6. The reason

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.for this 14 day exemption is the fact that diesel generator 1C supplies power to some of the train A river water pumps. Thus with the very

-low source of decay heat, the Unit 2 in modes 2, 3, 4, 5 or 6 is

__ equivalent to its being in mode 5 or 6 with equilibrium decay heat.

In addition, Alabama Power Company proposes to demonstrate the operability of the remaining A.C. sources by performing surveillance requirements of section 4.8.1.1.2.a.4 within one hour and at least once per 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> rather than 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.

Due to expected time required to repair diesel generator IC,-approximately 150 starts on the remaining diesels would be required by Specification 4.8.1.1.2.a.4. The diesel manufacturer does not recommend the testing frequency required during the period required to repair diesel generator IC.due to potential accelerated wear. _ In addition, all transmission lines feeding the Farley Nuclear Plant switchyard are currently operable with no interruption scheduled during this repair.

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f IV. ' CONCLUSION

'.The proposed cha'nge to Technical Specification 3.8.1.1.b does not involve an unreviewed safety question.as defined by 10 CFR 50.59.

-This one time Technical Specification change however will not significantly affect the safe operation _ of the Farley Nuclear Plant Units 1 and 2. .

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TABLE l' Summary of:Postulattd Plant Conditions With Diesel Generator 1C Out For Maintenance Or Test c ,

REFER'TO FSAR.

CONDITION CONDITION LOSS OF LOSS OF TABLE 8.3-2 CASE' UNIT 1 UNIT 2 TRAIN EQUIPMENT SHEET NO. COMMENT

-1 LOSP LOSP 2A LOSP LOADS ll ' . ---

,2 LOSP No LOSP NONE NONE 4 D.G. 1C not requiredL 3 No.LOSP LOSP NONE. NONE. 4 D.G. 1C not' required-4 LOSP LOSP 2A LOSP 2 D.G. 1-2A aligns to LOCA unit.

LOCA No LOCA LOADS 5 LOSP LOSP 1A LOSP '3 D.G. 1-2A aligns to LOCA unit No LOCA .LOCA LOADS 6 LOSP No LOSP NONE NONE 5 D.G. 1C not required

,LOCA No LOCA 7 No LOSP LOSP NONE. NONE 5 D.G. IC.not required-No LOCA LOCA 1

NOTE: With LOCA on either unit river water pumps are not required.

DEFINITIONS: LOSP - Loss of Offsite Power TRAIN 2A "A" electrical train of Unit 2 j TRAIN 1A "A" electrical train of Unit 1 .

l LOSP LOADS - are the emergency-loads required to function during the shutdown

process of a non-accident unit, when that unit experiences the

loss of its offsite power sources. .

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FIGURE 2 '- LOSP AND LOCA LOADS -

LOAD DESCRIPTION BUSES 1F. 1K- IG IL 2F 2K 2G 2L

.A. LOSP LOADS' -

-Charging PMP X X X X CCW PMP -X X X X AFW PMP X X -X X CRDM CLNG FAN .X X X X CTMT CLR FAN X X X X X X X X BATT'CHRGR SERVICE WTR PMP .

X X X X B. LOCA LOADS HHSI PMP X X X X RHR PMP X X X X r--- CCW PMP- X X X X

. AFW PMP X X X X

, CTMT-. SPRAY PMP X X X X REAC CAV H2 DIL FAN X X X X CTMT CLR FAN X X Y. X BATT CHRGR X X X X SERVICE WTR PMP X X X X C. RIVER WATER SYSTEM a) 1 RIVER WTR PMP TOTAL X b) 2 RIVER WTR PMP TOTAL' X X c) 3 RIVER WTR PMP TOTAL i u

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