Text

Proposed Tech Specs Re Deletion of Surveillance Requirement 4.8.1.1.1.b
	ML20117D334
Person / Time
Site:	Sequoyah
Issue date:	08/21/1996
From:	; TENNESSEE VALLEY AUTHORITY
To:	;
Shared Package
ML20117D329	List: ML20117D327; ML20117D334;
References
	NUDOCS 9608280255
	Download: ML20117D334 (11)
	v • d • e

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ENCLOSURE 1 PROPOSED TECHNICAL SPECIFICATION (TS) CHANGE SEQUOYAH NUCLEAR PLANT (SON) UNITS 1 AND 2 DOCKET NOS. 50-327 AND 50-328 (TVA-SON-TS-96-06) 1 LIST OF AFFECTED PAGES !

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PDR ADOCK 05000327 p p PDR

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1 ELECTRICAL POWER SYSTEMS ACTION (Continued)

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c. With one offsite 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 Surveillance Requirements 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 R104 thereafter, and Surveillance Requirement 4.8.1.1.2.a.4 within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months ; 4

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 four diesel generator sets to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the 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 follow-i ing 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

With two of the above required offsite A.C. circuits inoperable, R209 l

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demonstrate the OPERABILITY of 4 diesel generator sets by performing I Surveillance Requirement 4.8.1.1.2.a.4 within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless the R104 diesel generator sets are already operating; restore at least 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 i 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 i offsite source restored, restore at least two offsite circuits to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from 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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e. With either diesel generator sets IA-A and/or 2A-A inoperable j simultaneous with IB-B and/or 2B-B, 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 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; restore at least 1) 1A-A and 2A-A or 2) IB-B and 28-B 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 four diesel generator sets to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from time of initial loss or be in least H0T 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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SURVEILLANCE RE0VIREMENTS 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 alignmentsgandndicated power availabilityg.+nd-

b. 0;;;n;trat;d 0l'[llASLE at 1;;;t On;; p;r 10 ;; nth; durini; ;hutdOWn by transferrin;; (;;n;;11y ;nd ;;t;;;ti;;11y) unit p;W;r ;;pply fr;; th; i,;r;ter_ ;;;pportid circuit t; th; pr;forr;d p;W;r (CDC 17) R188

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June 29, 1995 SEQUOYAH - UNIT 1 3/4 8-2 Amendment No. 100, 137, 184, 205

- , ELECTRICAL POWER SYSTEMS ACTION (Continued)

R195 i

c. With one offsite circuit and one diesel generator set of the above l l

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

Requirements 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 ag9 thereafter, and Surveillance Requirement 4.8.1.1.2.a.4 within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months ; 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 l 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 l two offsite circuits and four diesel generator sets to OPERABLE status I within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the 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 . l R195

d. With two of the above required offsite A.C. circuits inoperable, j demonstrate the OPERABILITY of 4 diesel generator sets by performing Surveillance Requirement 4.8.1.1.2.a.4 within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless the lR89 diesel generator sets are already operating; restore at least one of theinoperableoffsitesourcestoOPERABLEstatuswithin24hoursorbel 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 offsite circuits to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from 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 l following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . !

R195

e. With either diesel generator sets IA-A and/or 2A-A inoperable l simultaneous with 18-B and/or 2B-B, 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 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; restore at least 1) 1A-A and 2A-A or 2) 1B-B and 2B-B to OPEPABLE 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 four diesel generator sets to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months i from time of initial loss or be in 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 REOUIREMENTS 4.8.1.1.1 Each of the above 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 alignmentsglindicated ana power availabilityy..and-

b. 0;;;n;trat;d 0"E"f3LE ;t le;;t On:c p;r 10 ;; nth; during ;hutd;W by tran;f;rring (;;nually ;nd out;;;tically) unit p;W;r ;upply fr;; th R176 unit gencr;t:r ;;pport:.d circuit to the preferred p =r (CDC 17) iait.

June 29, 1995 3/4 8-7 Amendment No. 89, 123, 176, SEQUOYAH - UNIT 2 195

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ENCLOSURE 2 PROPOSED TECHNICAL SPECIFICATION (TS) CHANGE I

SEQUOYAH NUCLEAR PLANT (SON) UNITS 1 AND 2 DOCKET NOS. 50-327 AND 50-328 (TVA-SQN-TS-96-06) j DESCRIPTION AND JUSTIFICATION FOR REMOVAL OF SURVEILLANCE REQUIREMENT 4.8.1.1.1.b i

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DescriptiOfLDLChange TVA proposes to modify the Sequoyah Nuclear Plant (SON) Units 1 and 2 technical specifications (TSs) by removing Surveillance Requirement (SR) 4.8.1.1.1.b. This surveillance verifies the ability to transfer unit power supply from the unit generator supported circuit to the preferred power circuit. This deletion does not affect other portions of the TS or the associated Bases.

BaasonJor_ Change SR 4.8.1.1.1.b was established to ensure that the power feeds for the units would be transferred to a qualified offsite power circuit in accordance with General Design Criteria (GDC) 17 of 10 CFR 50 Appendix A. SON has implemented a design chango to align the normal unit power supply, including the shutdown power, to the preferred GDC 17 offsite circuits. The transfer scheme is no longer necessary because of the new alignment. The surveillance was not deleted at the time of the design change I because it was believed that there could be instances where this feature might be I needed as a contingency for maintenance activities. TVA has since determined that placing the units on the unit generator supported supply would only be necessary for maintenance on the preferred circuits, in this situation, the TS requirements would require compliance with the actions for the inoperability of an offsite circuit even if the transfer scheme was operable. The surveillances to verify this feature are of no value ,

considering the revised operating design at SON. l I

TVA has identified an economic advantage with deleting this surveillance. It usually j takes approximately 100 man-hours to perform this surveillance during each refueling I outage. This expenditure is an unnecessary use of resources that can be put to better )

use elsewhere. In addition, the surveillance activities also create complexities in the scheduling of outage activities. Deletion of this surveillance will reduce outage costs and simplify scheduling of electric board work.

I Justification for Changes 1 l

SR 4.8.1.1.1.b verifies a feature that is not necessary in the current operating scheme at SON (reference SON updated Final Safety Analysis Report, Section 8.2.1.7).

Whenever unit power is aligned to an unqualified unit generator supported circuit, the I affected offsite circuit or circuits will be considered inoperable. The only purpose for utilizing the unit generator supported scuit is to perform maintenance on the required preferred offsite circuits.

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1 The transfer feature is of no value in this situation because the unit power would be transferring to an inoperable circuit. A circuit being backfed from the unit station service transformers during a unit outage could be analyzed to meet GDC 17 requirements, and in this situation, the transfer feature would still be of no value '

because the unit power supply would already be aligned to a GDC 17 preferred circuit.

With the offsite circuits aligned to the preferred power sources, as currently required, l no automatic transfers are enabled that could impact this alignment. -

l The safety function that had been previously provided by the transfer feature is not required with the new normal alignment of shutdown power to the preferred offsite circuits. This alignment also provides the desired alignment during accident conditions without the use of active components. During periods when shutdown power may be i aligned to other circuits not meeting GDC 17 criteria, the action requirements I associated with an inoperable offsite circuit will be entered to ensure the circuit will be restored to operable and proper alignment status or unit shutdown will be required to a nonapplicable mode. In both cases, the associated safety function is either continuously achieved or controlled by applicable TS requirements such that plant nuclear safety is not adversely impacted. The additional benefit of reducing refueling !

outage expense and complexity provides added justification for the proposed change. ;

Envimnmentallmpact Evaluation l

The proposed change does not involve an unreviewed environmental question because operation of SON Units 1 and 2 in accordance with this change would not:

1. Result in a significant increase in any adverse environmental impact previously evaluated in the Final Environmental Statement (FES) as modified by NRC's testimony to the Atomic Safety and Licensing Board, supplements to the FES, environmentalimpact appraisals, or decisions of the Atomic Safety and Licensing Board.

2. Result in a significant change in effluents or power levels.

3. Result in' matters not previously reviewed in the licensing basis for SON that may have a significant environmental impact.

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I ENCLOSURE 3 PROPOSED TECHNICAL SPECIFICATION CHANGE SEQUOYAH NUCLEAR PLANT (SON) UNITS 1 AND 2 .

DOCKET NOS. 50-327 AND 50-328 (TVA-SON-TS-96-06)

DETERMINATION OF NO SIGNIFICANT HAZARDS CONSIDERATION j

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l Significant Hazards Evaluation TVA has evaluated the proposed technical specification (TS) change and has determined that it does not represent a significant hazards consideration based on criteria established in 10 CFR 50.92(c). Operation of Sequoyah Nuclear Plant (SON) in accordance with the proposed amendment will not:

1. Involve a significant increase in the probability or consequences of an accident previously evaluated.

The proposed change will delete a surveillance associated with a feature that does not provide a safety function based on the current SON design and operating procedures. The transfer feature that is currently verified will either be achieved by the system alignment or covered by the applicable TS action requirements. This transfer feature provided automatic system alignment to preferred offsite power circuits for accident mitigation purposes. This feature, or the lack of,is not considered a source of any accident and the proposed change to delete the associated surveillance will not increase the possibility of an accident previously evaluated. Safety functions are maintained by the current offsite circuit alignment without the transfer feature or associated surveillance.

Therefore, the consequences of an accident can not be increased and may be reduced by eliminating the use of active devices to satisfy safety functions.

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2. Create the possibility of a new or different kind of accident from any previously analyzed.

The offsite circuit transfer feature is not considered to be a source of an accident l and the deletion of a surveillance to verify the operability of this transfer will not impact this potential. Therefore, the deletion of Surveillance 4.8.1.1.1.b will not create the possibility of a new or different kind of accident previously analyzed.

3. Involve a significant reduction in a margin of safety.

The current SON alignment satisfies all required offsite circuit alignments necessary to support accident mitigation functions without the use of active devices. In addition, any time delays associated with the transfer actuation to rec!ign the offsite circuits, that is tested by the surveillance proposed to be deleted, are eliminated by the current alignment. Therefore, the margin of safety associated with the affected safety function is not reduced and may be increased by the elimination of active devices and their associated time delays.

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! ENCLOSURE 4 l PROPOSED TECHNICAL SPECIFICATION (TS) CHANGE l

j 'SEQUOYAH NUCLEAR PLANT (SON) UNITS 1 AND 2 DOCKET NOS. 50-327 AND 50-328 (TVA-SQN-TS-96-06)

REVISED TS PAGES i

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ELECTRICAL POWER SYSTEMS .

1 ACTION (Continued)

c. With one offsite circuit and one diesel generator set of the above lR209 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 within one hour and at least once per 8 R104 l hours thereafter, and Surveillance Requirement 4.8.1.1.2.a.4 within 8 i hours; 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 four diesel generator sets to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the 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 .

d. With two of the above required offsite A.C. circuits inoperable, lR209 )

demonstrate the OPERABILITY of 4 diesel generator sets by performing j Surveillance Requirement 4.8.1.1.2.a.4 within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless the R104 diesel generator sets are already operating; restore at least 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 offsite circuits to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from 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 .

e. With either diesel generator sets 1A-A and/or 2A-A inoperable lR209 simultaneous'with 1B-B and/or 2B-B, 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 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; restore at least 1) 1A-A and 2A-A or 2) 1B-B and 2B-B to OPEPABLE 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 four diesel generator sets to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from time of initial loss or be in least HOT STANDBY within the next I

'l 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 REOUIREMENTS 4.8.1.1.1 Each of the above 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 and indicated power availability.

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SEQUOYAH - UNIT 1 3/4 8-2 Amendment No. 100, 137, 184, 205,

ELECTRICAL POWER SYSTEMS ACTION (Continued)

c. With one offsite circuit and one diesel generator set of the above lR195 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 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 Surveillance Requirement R89 4.8.1.1.2.a.4 within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months ; 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 I

.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 four diesel generator sets to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the 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 .

d. With two of the above required offsite A.C. circuits inoperable, lR195 demonstrate the OPERABILITY of 4 diesel generator sets by performing Surveillance Requirement 4.8.1.1.2.a,4 within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless the diesel generator sets are already operating; restore at R89 least 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 offsite circuits to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from 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 . ,

e. With either diesel generator sets lA-A and/or 2 A-A inoperable )

simultaneous with 1B-B and/or 2B-B, demonstrate the OPERABILITY of lR195 1 two offsite A.C. circuits by performing Surveillance Requirement i 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 1) lA-A and 2A-A or 2) 1B-B and 2B-B 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 four diesel generator' sets to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from time of initial loss or be in 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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SURVEILLANCE REQUIREMENTS ]

1 4.8.1,1.1 Each of the above 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 and indicated power availability.

SEQUOYAH - UNIT 2 3/4 8-2 Amendment No. 89, 123, 176, 195, ;

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ML20117D334

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