ML20105D419

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Proposed Revised Tech Spec 3/4.8.1.1 Re Limiting Condition of Operation for Ac Sources
ML20105D419
Person / Time
Site: Byron Constellation icon.png
Issue date: 01/29/1985
From:
COMMONWEALTH EDISON CO.
To:
Shared Package
ML20105D410 List:
References
NUDOCS 8502110010
Download: ML20105D419 (7)
v • d • e


Text

e ATTACHMENT 22 DIESEL GENERATORS 1 ~. T.S. 3/4.8.1 (pages 3/4 8-1, 3/4 8-2 and 3/4 8-8) A.C. Sources HTo Action Statements a, b and d make the changes noted on the attached pages. Replace Table 4.8.1 with the attached Table.

These changes are requested.in accordance with Generic Letter 84-15 " Proposed Staff Actions to Improve and Maintain Diesel

. Generator Reliability " dated July 2, 1984.

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, 8502110010 29 PDR ADOCK 0 454

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@ 26 g 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 OPERABLE:

a. Each Class 1E 4160 volt bus capable of being powered from:
1) Either transformer of a given units normal System Auxiliary Transformer bank, and
2) Either transformer of the other units System Auxiliary Transformers bank, with Each units System Auxiliary Transformer bank energized from an independent transmission circuit,
b. Two separate and independent diesel generators, each with:
1) A separate day tank containing a minimum volume of 450 gallons of fuel,
2) A separate Fuel Oil Storage System containing a minimum volume of 44,000 gallons of fuel, and
3) A separate fuel transfer pump.

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

ACTION:

- a. With either an offsite circuit or diesel generator of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Specification 4.8.1.1.la - " " --^'- ' " ' ' " within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> 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 /> thereafttre; restore at least two offsite circuits Coad SpeciReah'an 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 q, g . i. t . 2. o . 9 least HOT STANOBY 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 bink 24 hoort 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'of the above required A.C. electrical power sources inoperable, demonstrate the OPERASILITY of the remaining A.C. sources by performing Specifications 4.8.1.1.la = " " ^ 1 '-

r; within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> 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 /> thereafter4 restore at least one of the inoperable sources to OPERABLE statuT 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 STANDBY pg gF; peg

- 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 SMUT 00WN within the following 4.8 11 2***N 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

- gp 8 hoors 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 STANOBY 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 />.

BYRON - UNIT 1 3/4 8-1

r OCT 2 6 ggpq ELECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION I ACTION (Continued)  ;

c. ' With one diesel generator inoperable in addition to ACTION a. or b. '!

above, verify that:

1. All required systems, subsystems, trains, components and devices ,

that depend on the remaining OPERA 8LE diesel generator as a '

source of emergency power are also OPERA 8LE, and

2. When in MODE 1, 2 or 3, the diesel-driven auxiliary feedwater pump is OPERA 8LE and the Unit 2, A diesel generator is OPERA 8LE,"

if the inoperable diesel generator is the emergency power supply i for the motor-driven auxiliary feedwater pump.

If these conditions are not satisfied within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> be in at least HOT STAN08Y 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 two of the above required offsite A.C. circuits inoperable, demonstrate the OPERABILITY of two diesel generators by performing l-Specification 4.8.1.1.2a.4) within E . _ _. _ = i i; : t ence --

A hours 1, , A- , unless the diesel generators are already operating; restore at least one of the inoperable offsite sources to OPERA 8LE 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 STAN08Y 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 STAN08Y 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 />.

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

demonstrate the OPERA 8ILITY of two offsite A.C. circuits by perform- .

ing Specification 4.8.1.1.la. within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> 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 of the inoperable diesel generators to OPERA 8LE 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 STAND 8Y 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 diesel generators to.

OPERA 8LE 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

least HOT STAN08Y 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 />.
  • Until 2 years after' issuance of an operating license for Unit 1 the Unit 2, A diesel _ generator must be capable of providing power to bus 141, and the LCO,
ACTION and' SURVEILLANCE' requirements of Specifications 3/4.8.1.3 shall be applicable. Subsequently, LC0 3.'8.1.1.b.1), 2), and 3), and Surveillance Requirements 4.8.1.1.2 shall be applicable to the Unit 2, A diesel as applicable for demonstrating that the Unit 2, A diesel is OPERA 8LE as an emergency power

. supply for the Unit 1 motor-driven auxiliary feedwater pump.

BYRON - UNIT 1 3/4 8-2 i

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Table 4.8.1 DIESEL GENERATOR TEST SCHEDULE Number of Failuresin

, last 20 Valid Tests

  • Test Frequency i1 At least once per 31 days 22 At least once per 7 days"
  • Criteria for determining number of failures and nunber of valid tests shall be in accordance with Regulatbry Position C.2.e of Regulatory Guide 1.108, Revison 1, August 1977, where the number of tests and failures is detennined on a per diesel generator basis. For the purposes of this test schedule, only valid tests conducted after the esmpmtion of-%e pm.openhuwl test reguirements of Re3unatog Ca* l.108, Rev 1, Aus 1997, shall be indoded in4he. comPut* H8h of %e. " last - 2o valid +csts. "

"This test frecuency shall be maintained until seven consecutive failure free demands have been performed and the number of failures in the last 20 val d demands has been reduced to one or less.

BYRON - UNIT.1

l ATTACHMENT 23 REMOTE SHUTDOWN MONITORING INSTRUMENTATION

- 1. Table 3.3-9 and Table 4.3-6 (pages 3/4 3-51 and 3/4 3-52)

Delete Item 8 "RHR Flow Rate" from Tables 3.3-9 and 4.3-6.

-Also renumber Items 9 and 10 as 8 and 9 respectively. This deletion is requested since RHR flow rate is not a required parameter in performing a safe and controlled remote shutdown.

Other indications of adequate core cooling are provided by the RCS temperature, pressure and level indications.

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IA8tf 4.3-6 e

j RfMDIE S4RalDOWN MONITORING INS 1RUMENIATION z SURVITLLANCE RfQUltfMINls 3

e CHANNEL CHANNEL CHfCK CAtl8AAll0N *

$ INSimuMENT

1. Intermediate Range Neutron flux M R
2. M* R Source Ranee Meutron flux ,
3. Reactor Coolant Temperature - Wide Rasu>e M R
4. Pressurizer Pressure M A ,

't

5. Pressurizer Level M R
6. Steam Generator Pressure M R s
7. Steam Gener.itor Level M A

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. " Z ..v s...  ;; a"-

O./ RHR leeparature M R 9.E Auxiliary fee h ter flow Rate M R hihen below P-6.

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M M

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TABLE 3.3-9 REMOTE SHU100WN MONITORING INSTRUNENTATION TOTAL NO. MINIMUM REA00ui Of CHANNELS ,

INSTRUMENT LOCAll0N CHANNELS OPERA 8tf ,

1. Intermediate Range Neutron Flux ,PLO6J 2 1
2. Source Range Neutron Flux ,PLO6J 2 1
3. Reactor Coolant Temperature -

.Jide R'nge a

a. Ilut Leg iPLO5J 1/ loop 1/ loop
b. C01 1 t eg ,Pt05J 1/ loop 1/ loop .
4. ,

Pressuruer Pressure iPLO6J l 1

5. Pressurizer Level .PLO6J 2 1
6. Steam Generator Pressure PLG4J/ lPLn5J 1/ste gen 1/sta gen
7. Steam Generator Level pPLO4J 1/sta gen 1/sta gen

-0. " ;^ f; _ ^ M

.,  ! " ^2  ?  ?

O. f. AttR Temperature LOCAL 2 1

9. J&. Auxiliary feedwater flow Rate Pt04J/ Pt05J 2/ste gen 1/ste gen C3 M

to on E

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