ML20199K600

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Proposed Tech Specs Adding New Action Statement to 3.1.3.2 That Would Eliminate Need to Enter TS 3.0.3 Whenever Two or More Individual RPIs Per Bank May Be Inoperable,While Maintaining Appropriate Overall Level of Protection
ML20199K600
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 01/15/1999
From:
TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20199K589 List:
References
NUDOCS 9901260457
Download: ML20199K600 (7)
v • d • e


Text

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l l ENCLOSURE 2 TENNESSEE VALLEY AUTHORITY SEQUOYAH PLANT (SQN)

UNITS 1 and 2 l

PROPOSED TECHNICAL SPECIFICATION (TS) CHANGE TS-98-07 MARKED PAGES l'

I. AFFECTED PAGE LIST l Unit 1 l

3/4 1-17 Unit 2 3/4 1-17 l

II. MARKED PAGES See attached.

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t 9901260457 990115 PDR ADOCK 05000327 j

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! l REACTIVITY CONTROL SYSTEMS I j

_P_OSITION' INDICATION SYSTEMS - OPERATING  !

LIMITING CONDITTON FOR OPERAT_ ION  ;

f.o..,

3.1.3.2 The shutdown and control rod position. indication system and the demand position indication, system shall be OPERABLE and capable of determining the control rod positions within i 12 steps.

APPLICABILITY: MODES I and 2.

ACTION:

a. . With a maximum of one rod position indicator per bank inoperable either: g R2L7 l l
1. Determine the position of the non-indicating rod (s) indirectly l

' by the movable incore detectors at least once per# hours and i intnediately after any motion of the non-indicating rod which l exceeds 24 steps in one direction since the last determination l

of the rod's position, or )

2. Reduce THERMAL POWER to less than 50% of RATED THERMAL POWER I@ within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

With a maximum of one d' e mand position indicator per bank inoperable

% either:

1. Verify that all rod position indicators for the affected bank

'" are OPERABLE and that the most withdrawn rod and the least

' withdrawn rod of the bank are within a maximum of 12 steps of each other at least once p ' hours, or ,

2. Reduce THERMAL POWER to less than 50% of RATED THER within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />. ,

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b. With more than one rod position indicator per bank inoperable R217 i either:

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1. Determine the position of the non-indicating rod (s)

I indirectly by the movable incore detectors at least once l per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, and immediately after any motion of the non-indicating rod which exceeds 24 steps in one direction since the last determination of the rod's position, and

2. Place the control rods under manual control, and monitor and record Reactor Coolant System average temperature )

(Tavg)at least once per hour, and

3. Restore the rod position indicators to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> such that a maximum of one rod position

- ' indicator per bank is inoperable, or  ;

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4. Be in 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 />.

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October 4, 1995 Amendment No. 118, 213

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IM5 err Fea. Fue % -n san umt 2.

b. With more than one rod position indicator per bank inoperable either:
1. Determine the position of the non-indicating rod (s) indirectly by the movable incore detectors at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, and immediately after any motion of the non-indicating rod which exceeds 24 steps in one direction since the last determination of the rod's ~

position, and

2. Place the control rods under manual control, and monitor and record Reactor Coolant System average temperature (Tavg) at least once per hour, and
3. Restore the rod position indicators to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> such that a maximum of one rod position indicator per bank is inoperable, or
4. Be in 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 />.

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l REACTIVITY CONTROL SYSTEMS <

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kbSM POSITION INDICATI0N SYSTEMS-0PERATING l

LIMITING CONDITION FOR OPERATION 3.1.3.2 The shutdown and control rod position indication system and the demand position indication system shall be OPERABLE and capable of determining the control rod positions within t 12 steps.

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.APPLICA8ILITY: MODES l and 2.

ACTION:

a. With a maximum of one rod position indicator per bank inoperaole ,

either: 17,

1. Determinethepositionofthenon-indicatingrod(s)[ indirectly by the movaole incore deiectors at least once per 2' hours and immediately after any motion of the non-indicating rod which exceeds 24 stecs in one direction since the last determination of the rod's position, or
2. Reduce THERMAL POWER TO less than 50% of RATED THERMAL POWER within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

Cl kd' With a maximum of one demand position indicator per bank inoperable either:

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1. Verify that all rod position indicators for the af fected bank are OPERABLE and that the most withdrawn rod and the least withdrawn rod of the bank are within a maximum of 12 steps of each other at least once per &' hours, or 12 2
2. Redtce THERMAL POWER to less than 50% of RATED THERMAL POWER within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

SURVEILLANCE REOUIREMENTS 4.1.3.2 Each rod position indicator shall be determined to be OPERABLE by verifying that the demand position indication system and the rod position indication system agree within 12 steps at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> excaot during time intervals wnen the Rod Position Deviation Monitor is inoperable, then compare the demand position indication system and the rod position incicat oni system at least once per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

^q;j, SEQUOYAH - UNIT 2 3/4 1-17 l

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l ENCLOSURE 3 TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT (SQN)

UNITS 1 and 2 l f

PROPOSED TECHNICAL SPECIFICATION (TS) CHANGE TS-98-07 '

REVISED PAGES i

I. AFFECTED PAGE LIST Unit 1 ,

3/4 1-17 l

Unit 2  !

3/4 1-17 3/4 1-17a I

II. REVISED PAGES See attached.

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.fPegt 3 cf 6 li

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' REACT!v!TY CONTROL SYSTEMS

. POSITION ' INDICATION Sr57 EMS-OPERATING I.

LlHITING CONDITION FOR OPERATION 3.1. 3. 2 The Digital Rod Position Indication System and the Cezand Position i Indication System shall be CPERAELE and capable of determinicg tre cc- 1 rod positiens within i 12 steps.

APPLIC*EILITY: MODES 1 and 2.

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a. With a maximum of one digital rod position indicatcr per bank inoper-asle either:
1. Catermire the position of the nonindicating rec (s) indir ectly by the movable incere'detecters at least once per S hours and immediately af ter any action of the nonindicating rod which exceeds 24 steps in one direction since the last determination cf the rec's positien, c-

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2. Redsce THERMAL ' POWER to less than 50% of RATED THERMAL PCkER within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

Insert [)

((()<r(e- W1th a =aximLa cf cne demand position indicator per bank inoperable either:

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1. Verify that all digital rod position indicaters fer the affected I bank are OPERABLE and that the most withdra-n red and the least withdrawn rod of the bank are within a maxirus cf 12 steps cf each cther at least cnce per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, er
2. Reduce THERMAL PCWER to less than 50% of RATED THERMAL POWER within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

SURVEILLAVCE REQUIREMENTS 4.1.3.2 Each digital red pcsition ir.dicator shall be determined to be CFERAELE by verifying that the Ce:and Pcsiticn Indication System and t e Digital Red Positica Indication System agree within 12 steps at least cece per 12 hccrs except during time intervals when the rod position deviaticn scnitor is inoper-able, tren compare the Cemand Position Indication System and the Digital Red l Position Indication System at least orce per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

i l WOLF CREEK - Usti 1 3/4 1-17 e

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  • f f gy. Attcchment IV to ET 91-0051 77 Page,& of,6 a )
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b. With more than one digital rod position indicator per bank inoperable l' either:

t 1.a) Determine the position of the r.onindicatina rods indirectly by i

the movable incore detectors at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> and l immediately after any motion cf the nonindicating rod which l

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exceeds 24 steps in one direc tion since the last determination i

of the rod's position, and b) Place the control rods under manual control, and I

c) Monitor and record Reactor Coolant System average temperature  !

(T avg) at least once per, hour, and '

d) Restore the digital rod position indicators to CPERABLE status '

within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> such that s estimum of one digital rod position indicator per bank is inoperable, or {

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2. Be in BOT STANDBY within ths next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

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