Text

Proposed Tech Specs Pages,Revising TS to Permit Relaxation of Allowed Bypass Test Times & Completion Times for LCOs 3.3.1 & 3.3.2
	ML20217G657
Person / Time
Site:	Vogtle
Issue date:	10/13/1999
From:	; SOUTHERN NUCLEAR OPERATING CO.
To:	;
Shared Package
ML20138G470	List: ML20217G644; ML20217G657; ML20217G675;
References
	NUDOCS 9910210320
	Download: ML20217G657 (97)
	v • d • e

Enclosure 3 Request to Revise Technical Specificitions Reactor Trip System and Engineered Safety Feature Actuation System Completion Times and Bypass Test Times Marked-up TS and Bases Pages l

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991031 320 991013 i PDR ADOCK 05000424

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I l RTS Instrumentation 3.3.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME D. One Power Range NOTE-Neutron Flux-High A channel may be bypassed for up channel inoperable. ghours for surveillance testing

/ and setpoint adjustment.

2 D.1.1 Place channelin trip, ours

/ND 7 l D.1.2 Reduce THERMAL ours POWER to s 75% RTP.

71 D.2.1 Place channelin trip. Mours AND NOTE -

l Only required to be performed wh6n l

the Power Range Neutron Flux input j to QPTR is inoperable and !

THERMAL POWER 2 75% RTP. l D.2.2 Once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Perform SR 3.2.4.2. )

18 l D.3 Be in MODE 3. Mours (continued) !

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9 Vogtle Units 1 and 2 3.3.1 2 Amendment No. 96 (Unit 1)

Amendment No. 74 (Unit 2)

RTS Instrumentation 3.3.1 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME E. One channel inoperable. NOTE A channel may be bypassed for up ours for surveillance testing.

12 ' 42 E.1 Place channelin trip. Mours B

16 E.2 Be in MODE 3. Mours F. THERMAL POWER F.1 Reduce THERMAL 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months

> P-6 and < P-10, one POWER to < P-6.

Intermediate Range Neutron Flux channel OR inoperable.

F.2 Increase THERMAL 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months POWER to > P-10.

D- G. THERMAL POWER G.1 Suspend operations immediately

> P-6 and < P-10, two involving positive reactivity '

i Intermediate Range additions.

Neutron Flux channels inoperable. AND G.2 Reduce THERMAL 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months POWER to < P-6, H. THERMAL POWER H.1 Restore channel (s) to Prior to increasing -

< P-6, one or two OPERABLE status. THERMAL POWER Intermediate Range to > P-6 Neutron Flux channels

. inoperable.

(continued) e Vogtle Units 1 and 2 3.3.1-3 Amendment N'o. 9f (Unit 1)

Amendment No. 74 (Unit 2)

RTS instrumentation 3.3.1 I

) ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME M. One channel inoperable. NOTES

1. For RCP bus undervoltage or underfrequencyinstrument functions; the inoperable channel may be bypassed for upl2/ hours for surveillance g tesang of other channels.

2. For other instrument functions; a channel may be bypassed for gupours for surveillance f testing.

71 M.1 Place channelin trip. Mours M.2 Reduce THERMAL ours POWER to < P-7.

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N. One Reactor Coolant NOTE Flow-Low (single loop) A channel may be bypassed for up channelinoperable. pours for surveillance testing.

IV 1&

N.1 Place channelin trip.. Mours B -

N.2 1(o ghours R' educe THERMAL POWER to < P-8.

(continued)

I Vogtle Units 1 and 2 3.3.1-5 Amendment No. 96 (Unit 1)

Amendment No. 74 (Unit 2)

RTS Instrumentation 3.3.1 ACTIONS (continued)

CONDITION REQUIRED ACTION g

COMPLETION TIME O. One Low Fluid oil NOTE pressure Turbine Trip A channel may be bypassed for up channel inoperable. pours for surveillance testing.

IV 12. \

O.1 Place channelin trip. Mours

76 0.2 Reduce THERMAL jRfhours POWER to < P-9.

P. One or more Turbine stop valve Closure P.1 Place channel (s)in trip. Mours Turbine Trip channels @

g i Inoperable. '

P.2 Reduce THERMAL Mours POWER to < P-9. l Q. One train inoperable. NOTE

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', One train may be bypassed for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance testing provided the other train is .

OPERABLE.

2 Q.1 Restore train to ours OPERABLE status.

Q.2 Be in MODE 3. hours (continued)

O Vogtle Units 1 and 2 3.3.1-6 Amendment No. M (Unit 1)

Amendment No. 74 (Unit 2)

RTS Instrumentation 3.3.1 l

ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME l R. One or more channels R.1 Verify interlock is in 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months inoperable. required state for existing I unit conditions.

R.2 Be in MODE 3. 7 hours8.101852e-5 days 0.00194 hours 1.157407e-5 weeks 2.6635e-6 months S. One or more channels S.1 Verify interlock is in 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months inoperable, required state for existing unit conditions.

S.2 Be in MODE 2. 7 hours8.101852e-5 days 0.00194 hours 1.157407e-5 weeks 2.6635e-6 months T. One RTB train NOTES inoperable. 1. One train may be bypassed for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for surveillance testing, provided the other train l is OPERABLE. I

2. One RTB may be bypassed for l

} ggg,Y gf ] up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for maintenance on undervoltage or shunt trip dpJJMbhYM&fJ mechanisms, provided the I ffggyg/gg//gf other train is OPERABLE.

lt5lll1)W/At AIA &

T.1 Restore train to 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 4&/#A4//c/ref/0j/]C/ /p r/ M OPERABLE g g c /J6tr status.rgjg ,

c isQPEMolf, _og

. T.2 Be in MODE 3. 7 hours8.101852e-5 days 0.00194 hours 1.157407e-5 weeks 2.6635e-6 months (continued)

Vogtle Units 1 and 2 3.3.1-7 Amendment No. 96 (Unit 1)

Amendment No. 74 (Unit 2)

ESFAS instrumentation 3.3.2 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME C. One train inoperable. NOTE One train may be bypassed for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance testing provided the other train is OPERABLE.

M C.1 Restore train to Mours OPERABLE status.

B 3o C.2.1 Be in MODE 3. Mours AND C.2.2 Be in MODE 5. hours D. One channel inoperable. NOTE A chpnnel may be bypassed for up f) ptours for surveillance testing.

D.1 Place channelin trip. ours OR 7

D.2.1 Be in MODE 3. ours AND '-

. D.2.2 Be in MODE 4. urs ,

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. (continued) l O

Vogtle Units 1 and 2 3.3.2-2 Amendment No. 96 (Unit 1)

Amendment No. 74 (Unit 2)

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ESFAS instrumentation {

3.3.2 l l

ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME j

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J E. One Containment NOTE Pressure High-3 channel One additional chan I may be inoperable. bypassed for up to ours for surveillance testing.

Q 72 .

E.1 Place channelin bypass. ours

" 7e ,

E.2.1 Be in MODE 3. )fnours AND o 0 I E.2.2 Be in MODE 4. ours )

l F. One channel inoperable. F.1 Restore channel to 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months OPERABLE status.

F.2.1 Be in MODE 3. 54 hours6.25e-4 days 0.015 hours 8.928571e-5 weeks 2.0547e-5 months AND F.2.2 Be in MODE 4. 60 hours6.944444e-4 days 0.0167 hours 9.920635e-5 weeks 2.283e-5 months (continued)

D 3.3.2-3 Amendment No. 96 (Unit 1)

Vogtle Units 1 and 2 Amendment No. 74 (Unit 2) 6 -

ESFAS instrumentation 3.3.2 ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME G. One train inoperable. NOTE-One train may be bypassed for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance testing provided the other train is OPERABLE.

2 G.1 Restore train to ours OPERABLE status.

30 G.2.1 Be in MODE 3. Mours AND G.2.2 Be in MODE 4. ftdiours H. One train inoperable. NOTE One train may be bypassed for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance testing provided the other train is OPERABLE.

H.1 Restore train to ours OPERABLE status.

30 H.2 se in MODE 3. Mours .

(continued)

O Vogtle Units 1 and 2 3.3.2 4 Amendment No. 96 (Unit 1)

Amendment No. 74 (Unit 2) 9

1 ESFAS instrumentation d 3.3.2 1

ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME

l. One channel inoperable. NOTE A channel may be bypassed for up gours for surveillance testing.

I 72 l.1 Place channelin trip. Nours OR 7

1.'2 Be in MODE 3. ours J. One Main Feedwater J.1 Restore channel to 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months Pumps trip channel OPERABLE status, inoperable.

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J.2 Be in MODE 3. 54 hours6.25e-4 days 0.015 hours 8.928571e-5 weeks 2.0547e-5 months K. One RWST Level- Low NOTE Low channel inoperable. One additional channgl may be (

bypassed for up to/ tours for l surveillance testing %4 l

/1 K.1 Place channelin bypass. [ours T 7 !

K.2.1 Be in MODE 3. ours

^" loo K.2.2 Be in MODE 5. Mours

. (continued).

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D Vogtle Units 1 and 2 3.3.2-5 Amendment No. 96 (Unit 1)

Amendment No. 74 (Unit 2) l I

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RTS Instrumsntation B 3.3.1 BASES h

ACTIONS C.1 and C.2 (continued)

Manual Reactor Trip; e RTBs; e RTB Undervoltage and Shunt Trip Mechanisms; and

Automatic Trip Logic.

This action addresses the train orientation of the SSPS for these Functions. With one channel or train inoperable, the inoperable channel or train must be restored to OPERABLE status within.

48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months . If the affected Function (s) cannot be restored to OPERABLE status within the allowed 48 hour5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months Completion Time, the unit must be placed in a MODE in which the requirement does not apply. To achieve this status, the RTBs must be opened within the next hour. The additional hour provides sufficient time to accomplish the action in an orderly manner. With the RTBs open, these Functions are no longer required.

The Completion Time is reasonable considering that in this Condition, the remaining OPERABLE train is adequate to perform the safety function, and given the low probability of an event occurring during this interval.

o.1.1. o.1.2, 0.2.1, o.2.2, and o.3 Condition D applies to the Power Range Neutron Flux-High Function.p Iasar1 -

The NIS power range detectors provide input to the CRo System and the SG Water Level Control System and, therefore, have a two-out-of-four trip logic. A known inoperable channel must be placed in the tripped condition. This results in a partial trip #

condition requiring only one-out-of-three logic for' actuation. The/ 72, hours allowed to place the inoperable channel in the tripped condition is justified in WCAP-39MT-P-A (Ref.4

/W33 12, in addition to placing the inoperable channel ;n the tripped condition THERMAL POWER must be reduced tos 75% RTP within ours. Reducing the power level prevents operation of 78 9

(continued)

Vogtle Units 1 and 2 B 3.3.1-42 Revision No. O

INSERT 1 This Condition contains bypass times and Completion Times that are risk-informed. The ConfigurationRisk Management Program (CRMP) is used to assess changes in core damage frequen;y resulting from applicable plant configurations. The CRMP uses the equipment oint of service risk monitor, a computer based tool that may be used to aid in the risk assessment ofon-line maintenance and to evaluate the change in risk from a

+ component failure. The equipment out of service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk ofremoving equipment from service based on current plant configuration and equipment condition. l I

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[ 1 RTS Instrumentation B 3.3.1 BASES ACTIONS D.1.1, D.1.2, D.2.1, D.2.2, and D.3 (continued) the core with radial power distributions beyond the design limits.

With one of the NIS power range detectors inoperable,1/4 of the radial power distribution monitoring capability is lost.

As an altemative to the above actions, th p ra e channelcan be placed in the tripped condition within) Mours and the QPTR monitored once every 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months as per SR 3.2.4.2, OPTR verification. Calculating QPTR every 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months compensates for

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the lost monitoring capability due to the inoperable NIS power range channel and allows continued unit operation at power levels s 75% RTP. The f ' o imp " u 2.C J~ 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Frequency consistent with LCO 3.2.4, " QUADRANT POWER TILT RATI ( TR)."

If the Required Actions described abov cannot be met within the !

specified Completion Times, the unit mi st be placed in a MODE l

where this Function is no longer require d OPERABLE. An additional 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months beyond the Complet an Time for Required Action D.1.1 and Required Action D.2.' are allowed to place the unit in MODE 3. Six hours is a ressorg ible time, based on operating experience, to reach MODEurom full power in an orderk {

manner and without challenging unit systems. If Required Actions D.2.2 cannot be completed within their allowed Completion Times, LCO 3.0.3 must be entered.

r also -12.

The Required Actions have been modified by a Noth that allows placing a cha'nnelin the bypass c andition for up tojiiours while performing routine surveillance te sting e6e#wehennels. With one channel inoperable, the Note' bliows routine surveillance testing of another channel with a channelin bypass. The Note also allows placing a channelin the bypass condition to allow setpoint adjustments when required to reduce the Power Range Neutron Flux- High setpoint in accordance with other Technical Specifications. The/ hour time limit is justified in Reference /

/t 12.

Required Action D.2.2 has been modified by a Note which only requires SR 3.2.4.1 to be performed if the Power Range Neutron Flux input to QPTR becomes inoperable. Failure of a component in the Power Range Neutron Flux channel which renders the High Flux Trip tunction inoperable may not affect the capability to monitor QPTR. As such, determining D (continued)

Vogtle Units 1 and 2 B 3.3.1-43 Revision No. 0

RTS Instrumentation B 3.3.1 BASES' ACTIONS D.1.1, D.1.2, D.2.1, D.2.2, and D.3 (continued)

OPTR using the movable incore detectors once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months may not be necessary.

1 E.1 and E.2 Condition E applies to the following reactor trip Functions:

Power Range Neutron Flux- Low; l e Overtemperature AT;

Overpower AT; 1

Power Range Neutron Flux - High Positive Rate;

Pressurizer Pressure-High; and SG Water Level-Low Low.

$N$ dot.T $ MA known inopera r ble$channel must be placed in the tripped condition withinJ diours. Placing the channel in the tripped condition results in a partial trip' condition requiring only one-out-of-two logic for actuation of the two-out-of-three trips and one-out-of-three logic for actuation of the two-out-of-four trips.

7 ghours allowed to place the inoperable channelin the tripped condition is justified in Referer)ce/ ;

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If the operable channel cannot be placed in the trip condition within the specified Completion Time, the unit must be placed in a :

MODE where these Functions are not required OPERABLE. An 1 additional 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is allowed to place the unit in MODE 3. Six hours is a reasonable time, based on operating experience, to place the unit in MODE 3 from full power in an orderly manner and 1 without challenging unit systems. I The Required Actions have been modified by a Note that allows placing a channelin the bypassed condition for up to '

f 7/I1ours while performing routine surveillance testing. With l one channelinoperable, the Note,pilows routine surveillance i 1M O'

(continued) !

Vogtle Units 1 and 2 B 3.3.1-44 Revision No. O

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i INSERT 1 This Condition contains bypass times and Completion Times that are risk-informed. The

- Configuration Risk Management Program (CRMP) is used to assess changes in core ,

damage frequency resulting from applicable plant configurations. The CRMP uses the l equipment out .of service risk monitor, a computer based tool that may be used to aid in l the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of :ervice risk monitor uses the plant probabilistic risk assessment model to evaluate the risk ofremoving equipment from service based on current plant configuration and equipment condition.

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RTS Instrumentation B 3.3.1 BASES ACTIONS E.1 and E.2 (continued) 11, testing of another channel with a channelin bypass. The/ hour time limit is justified in Reference [

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F.1 and F.2 Condition F applies to the Intermediate Range Neutron Flux trip when THERMAL POWER is above the P-6 setpoint and below the P-10 setpoint and one channelis inoperable. Above the P-6 setpoint and below the P-10 setpoint, the NIS intermediate range detector performs the monitoring Functions. If THERMAL POWER is greater than the P-6 setpoint but less than the P-10 setpoint,24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months are allowed to reduce THERMAL POWER below the P-6 setpoint or increase to THERMAL POWER above the P-10 setpoint. The NIS Intermediate Range Neutron Flux channels must be OPERABLE when the power level is above the capability of the source range, P-6, and below the capability of the power range, P-10. If THERMAL POWER is greater than the P-10 setpoint, the NIS power range detectors perform the monitoring and protection functions and the intermediate range is not required. The Completion Times allow for a slow and controlled power adjustment above P-10 or below P-6 and take into account the redundant capability afforded by the redundant OPERABLE channel, and the low probability of its failure during this period. This action does not requim the inoperable channel to be tripped because the Function uses one-out-of-two logic. !

Tripping one channel would trip the reactor. Thus, the Required l Actions specified in this Condition are only applicable when channel failure does not result in reactor trip.

L G.1 and G.2 l Condition G applies to two ino;ierable Intermediate Range Neutron Flux trip channels when THERMAL POWER is above the P4 setpoint and below the P-10 setpoint. Required Actions

. specified in this Condition are only applicable when channel .

failures do not result in reactor trip. Above the P-6 setpoint and below the P-10 setpoint, the NIS intermediate range detector performs the monitoring Functions. With no intermediate range channels OPERABLE, the Required Actions (continued)

Vogtle Units 1 and 2 B 3.3.1-45 Revision No. O

T P*TS Instrumsntation B 3.3.1 BASES ACTIONS L.1 (continued)

Condition L applies when the required number of OPERABLE Source Range Neutron Flux channels is not met in MODE 3,4, or 5 with the RTBs open. With the unit in this Condition, the NIS source range performs the monitoring and protection functions.

With^less than the required number of source range channels OPERABLE, operations involving positive reactivity additions shall ,

be suspended immediately. This will preclude any power !

escalation. However, this does not preclude actions to maintain or I increase reactor vessel inventory or place the unit in a safe conservative condition provided the required SDM is maintained.

Note that the source range also continues to provide input to the high flux at shutdown alarm (HFASA - LCO 3.3.8). LCO 3.3.8 requires that the HFASA receive input from two source range channels for the HFASA to be OPERABLE.

M.1 and M.2 Condition M applies to the following reactor trip ianctions:

e Fressurizer Pressure-Lov l 1

. Pressurizer Water Level-High; e Reactor Coolant Flow-Low (Two Loops);

e Undervoltage RCPs; and lQ e Underfrequency RCPs. '

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[NS6f.'T } *With one channelinoperable, the inopera ble channe: must be placed in. the tripped condition withirpfhours. Placing the channel in the tripped condition results in a partial trip condition requiring only one additional channel to initiate a reactor trip above the P-7 setpoint (and below the P-8 setpoint for the Reactor Coolant Flow - Low - Two Loops function). These Functions do not have to be OPERABLE below the P-7 setpoint because for the Pressurizer Water Level- High transients are slow enough for manual action, ,

and for the other functions DNB is n t as serious a concern !

due to the Low Power Level. The .1ours allowed to place the channel in the tripped condit n is justified in 72 g (continued)

Vogtle Units 1 and 2 B 3.3.148 Revision No. 0

INSERT 1 This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses the equipment out of service risk monitor, a computer based tool that may be used to aid in the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of senice risk monitor uses the plant probabilistic risk assessment model to evuate the risk 'of removing equipment from service based on current plant configuration and equipment condition.

i RTS Instrumentation B 3.3.1 BASES D

ACTIONS M.1 and M.2 (continued)

Reference An additional 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is allowed to reduce THERMAL POWER to below P-7 if the inoperable channel cannot be restored to OPERABLE status or placed in trip within the specified Completion Time.

Allowance of this time interval takes into consideration the redundant capability provided by the remaining redundant OPERABLE channel, and the low probability of occurrence of an event during this period that may require the protection afforded by the Functions associated with Condition M.

The Required Actions have been modified by two Notes. Note 1 applies only to the RCP undervoltage and underfrequency instrument functions. These functions do not have installed bypass capability. Therefore, the allowance to place these instrument channels in bypass is more limited. Note 1 allows the inoperable undervoltage or underfrequency instrument channel to be bypassed for up to/ hours for surveillance testing of other channels.

4 Note 2 allows placing a channel in the bypassed condition for up laE-ghours while performing routine surveillance testing. Note 2 applies to all Condition M instrument functions except RCP Ogb undervoltege and underfrequency. With one channelinoperable, Note 2%Ilows routine survell,ance testing of another channel with a channelin bypass. The ur time limit of both Notes is justified in Referen g

N.1 and N.2 SW I N Condition N applies to the %eactor. Coolant Flow Low (Single Loop) reactor trip Function.9With one channel inl >perable the Inoperable channel must be placed in trip withinghours. ,If the channel cannot be restored to OPERABLE status or the channel 7Z piaceo in trip witnin ine/ hours, then THERMAL POWER must

, be reduced below the P-8 setpoint within the next 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months . This places the unit in e t.f0DE where the LCO is no longer applicable. This trip Function does not have to be OPERABLE below the P-8 setpoint because other RTS trip Functions provide core protection below the P-8 setpoint. The " ours allowed to restore the channel to OPERABLE status place in nip and the 4 L77 D (continued)

Vogtle Units 1 anc 2 B 3.3.1-49 Revision No. O L- --

INSERT 1 This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses the

- equipment out of service risk monitor, a computer based tool that may be used to aid in the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk of removing equipment from service based on current plant configuration and equipment condition.

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RTS Instrumentation B 3.3.1 BASES ACTIONS N.1 and N.2 (continued) additional hours allowed to reduce THERMAL POWER to below the P-8 setpoint are justified in Reference /

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The Required Actions have been modified by a Note { t allows placing a channelin the bypassed condition for up toffiours while performing routine surveillance testing. With one channel inoperable, the Note allows routine surve' nee testing of anhther channel with a ghannelin bypaso. Th our time limit is justified in Reference #

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O.1 and 0.2 F72. M5tfTI Condition 0 applies to Turbine Trip on Low Fluid Oil Pressu With one channel inoperable, t inoperable channel must be placed in the trip condition withi ours. if placed in the tripped condition, this results in a partial trip condition requiring only one additional channel to initiate a reactor trip. If the channel cannot be restored to OPERABLE status or placed in the trip condition, then power must be reduced below the P-9 setpoint within the next 4 hern The/ hours allowed to place the inoperable g _ channelin the tripped conditic! and the 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months allowed for reducing power are justified in Reference #

12 The Required Actions have been m.odified by a Note t \at allows r/2-placing a channel in the bypassed condition for up tophours while performing routine surveillance testing. With one channel.

inoperable, the Note, p!%ws routine surveillance testing of another channel with a chan- ielin bypass. The/ hour time limit is justified in Reference g /7,,.

P.1 and P.2 gy' j Conditio P appiles to the Turbine Trip on Stop Valve Closure. Ith one or more channels inoperable, the

. Inoperable channels must be placed in the trip condition y withingflours. Since all the valves must be tripped (not fully open)in order for the reactor trip signal to be generated, it is acceptable to place more than one Turbine Stop Valve Closure channelin the tripped condition. If a channel cannot be restored to OPERABLE status or placed in (continued)

Vogtle Units 1 and 2 B 3.3.1-50 Revision No. O

INSERTI This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses the

- equipment out of service risk monitor, a computer based tool that may be used to aid in the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk ofremoving equipment from service based on current plant configuration and equipment condition.

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RTS Instrumentation B 3.3.1 l

BASES l ACTIONS P.1 and P.2 (continued) g l the trip condition, then power must bd reduced below the P-9 setpoint within the next 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months . The/ hours allowed to place an inoperable channel in the tripped condition and the 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months allowed for reducing power are justified in Reference /

IL Q.1 and 0.2 [NJ&A7j m Condition O applies to the E I Input from ESFAS reactor trip and the RTS Automatic Trip Log p in MODES 1 and 2. These actions address the channel orientat n of the RTS for these Functions.

With one channelinoperable, ours are allowed to restore the train to OPERABLE status or the unit must be placed in MODE 3 within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . The Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is reasonable considering that in this Condition, the remaining OPERABLE train is adequate to perform the safety function and

given the low probability of an event during this interval. The Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is reasonable, based on operating experience, to reach MODE 3 from full power in an orderly manner and without challenging unit systems.

The Required Actions'have been modified by a Note that allows bypassing one channel up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance testing, provided the other train is OPERABLE.

hSbAT[

l R.1 and R.2 Condition R applies to the P-6 interlock. Ylith one or more channels inoperable for one-out-of-two coincidence logic, the associated interlock must be verified to be in its required state for the existing unit' condition'within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months or the unit must be pir.ced in MODE 3 within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . Verifying the interlock status l manually accomplishes the interlock's Function. The Completion Time of 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months is based on operating experience and the minimum amount of time allowed for manual operator actions.

l . The Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is reasonable, based on l operating experience, to reach MODE 3 frora full power in an orderly manner and without challenging unit systems. The 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months Completion Times are equal to the time allowed by (continued)

Vogtle Units 1 and 2 B 3.3.1-51 Revision No. 0 k

INSERT 1 This Condition contains bypass times and Completion Times that are risk-informed. The Co'nfiguration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses the equipment out of service risk monitor, a computer based tool that may be used to aid in the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of service risk monitor uses the plant probabilistic risk a sessment model to evaluate the risk ofremoving equipment from service based on current plan: configuration and equipment condition.

E i

.fi'

+ . .

\.

i 1

?

4

RTS Instrumentation B 3.3.1 BASES-

? ACTIONS ~ : P.1 and P.2 (continued) based on current plant configuration and equipment condition.

With orie or more_ channels inoperable, the inoperable channels must be placed in the trip condition within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months .

Since all the valves must be tripped (not fully open) in order l for the reactor trip signal to be generated, it is acceptable to

- place more than one Turbine Stop Valve Closure channel in the tripped condition. If a channel cannot be restored to OPERABLE status or placed in the trip condition, then power must be reduced below the P-9 setpoint within 'the next 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months .

The 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months allowed to place an inoperable channel in the tripped condition and the 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months allowed for reducing power are Justified in Reference 12. l O.1 and O.2 Condition O applies to the Si input from ESFAS reactor trip and the RTS Automatic Trip Logic in MODES 1 and 2. These actions address the channel orientation of the RTS for these Functions.

~

This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses the equipment out of service risk monitor, a computer based tool that may be used to aid in the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk of removing equipment from service based on current plant configuration and equipment condition. With one channel inoperable,24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months are allowed to restore the train to OPERABLE status or the unit must be placed in MODE 3 within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . The Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is reasonable considering that in this Condition, the remaining OPERABLE train is adequate to perform the safety function and given the low probability of an event during this interval. The Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is reasonable, based on operatincpxperience, j to reach MODE 3 from full power in an orderly manner and without challenging unit systems.

The Required Actions have been modified by a Note that allows

. bypassing one channel up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance testing, provided the other train is OPERABLE. The 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months time limit for testing the RTS Automatic Trip Logic train may include testing the (continued)

Vogtle Units 1 and 2' B 3.3.1-52 m.

1 INSERT 2 -

1 l

The 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months time limit for testing the RTS Auto natic Tr:p Logic train may include testing I L the RTB also, if both the Logic test and RTB test are conducted within the 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months time

{

. limit. The 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months time limit is justified in Reference 12.

j j

,The 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months time limit for the RTS Automatic Trip Logic train testing is greater than the 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months time limit for the RTBs, which the Logic train supports. The longer time limit for the Logic train (4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months ) is acceptable based on Reference 13.

1 1

4 e 4

o RTS Instrumentation B 3.3.1 BASES ACTIONS R.1 and R.2 (continued)

LCO 3.0.3 for shutdown actions in the event of a complete loss of RTS Function.

1 S.1 and S.2 Condition S applies to the P-7, P-8, P-9, P-10, and P-13 interlocks. With one or more channels inoperable for {

I one-out-of-two or two-out-of-four coincidence logic, the associated interlock must be verified to be in its required state for the existing unit condition within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months or THERMAL POWER must be reduced to less than the affected interlock setpoint within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . These actions are conservative for the case where power levelis being raised. Verifying the interlock status manually accomplishes the interlock's Function. The Completion Time o' 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months is based on operating experience and the minimum amount of time allowed for manual operator actions. The Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is reastaable, based on operating experience, to reach f. LODE 2 from full power in an orderly manner and without challenging unit systems.

T.1 and T.2 -

Condition T applies to the RTBs in MODES 1 and 2. These actions address-the train orientation of the RTS for the RTBs.

'With one channel inoperable,1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months is allowed to restore the train l

to OPERABLE status or the unit must be placed in MODE 3 within ;

the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . The Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is reasonable, based on operating experience, to reach MODE 3 from full power in an orderly manner and without challenging unit systems. The 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months Completion Times are equal to the time allowed by LCO 3.0.3 for shutdown actions in the eve..t of a complete loss of RTS Function. Placing the unit in MODE 3 removes the requirement for this particular Function.

gg

. The Required Actions have been modified byprt$ Notes.

Note 1 allows one channel to be bypassed for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for surveillance testing, provided the other channel is OPERABLE.dNote 2 allows one RTB to be bypassed for up Mb to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for maintenance on undervoltage or shunt trip .

(continued)

Vogtle Units 1 and 2 B 3.3.1-52 Revision No O

i INSERT 3 Note 1 applies to RTB testing that is performed independently from the corresponding Logic train testing. For simultaneous testing of the Logic and RTBs, the 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months test time limit of Condition Q applies.

I i

T 9

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i i[

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{'

RTS Instrumsntation B 3.3.1 i I

BASES ACTIONS T.1 and T.2 (continued)-

mechanisms if the other RTB train is OPERABLE. The 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months time limit is justified in Reference 7.

$ Y l U.1 and U.2 Condition U applies to the RTB Undervoltage and Shunt Trip Mechanisms, or diverse trip features, in MODES 1 and 2. With one of the diverse trip features inoperable, it must be restored to an OPERABLE status within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months or the unit must be placed in a MODE where Condition U is no longer applicable. This is accomplished by placing the unit in MODE 3 within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months (54 hours6.25e-4 days 0.015 hours 8.928571e-5 weeks 2.0547e-5 months total time). The Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is a reasonable time, based on operating experience, to reach MODE 3 from full power in an orderly manner and without challenging unit systems. With the unit in MODE 3, Condition C applies to this trip function. The affected RTB shall not be bypassed while one of the diverse features is inopert.a.c except i for the time required to perform maintenance to ont, of the diverse l features. The allowable time for performing maintenance of the l diverse features is 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for the reasons stated under Condition T.

1 if two diverse trip features become inoperable in the same RTB, that RTB becomes inoperable upon discovery of the second inoperable trip feature.

j The Completion Time of 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months for Required Action U.1 is reasonable considering that in this Condition there is one remaining diverse feature for the affected RTB, and one OPERABLE RTB capable of performing the safety function and given the low probability of an event occurring during this interval.

V,:,1,

, Condition V corresponds to a level of degradatk,n in the RTS that causes a required safety function to be lost. When more than one Condition of this LCO is entered, and this results 'in the loss of

- automatic reactor trip capability, the unit is in a condition outside the accident analysis.

D (continued)

Vogtle Units 1 and 2 'B 3.3.1-53 Revision No O

INSERT 4 Note 3. applies to RTB testing that is performed concurrently with the corresponding Logic train testing. For concurrent testing of the Logic and RTB, the 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months test time limit of Condition Q applies. The 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months time limit is justified in Reference 12.

m%anstrum:n2ation B 3.3.1 BASES REFERENCES 2. FSAR, Chapter 6.

l (continued)

3. FSAR, Chapter 15.

4. IEEE-279-1971. l

5. 10 CFR 50.49.

6. WCAP-11269, Westinghouse Setpoint Methodology for i Protection Systems; as supplemented by: 1 1

. Amendments 34 (Unit 1) and 14 (Unit 2), RTS Steam i Generator Water Level - Low Low, ESFAS Turbine Trip and Feedwater Isolation SG Water Level - High High, and ESFAS AFW SG Water Level- Low Low.

Amendments 48 and 49 (Unit 1) and Amendments 27 and 28 (Unit 2), deletion of RTS Power Range Neutron Flux High Negative Rate Trip.

. Amendments 60 (Unit 1) and 39 (Unit 2), RTS .

Overtemperature AT setpoint revision. 1

. Amendments 57 (Unit 1) and 36 (Unit 2),.RTS Overtemperature and Overpower AT time constants and

Overtemperature AT setpoint.

. Amendments 43 and 44 (Unit 1) and 23 and 24 (Unit 2),

revised Overtemperature and Overpower AT trip ,

setpoints and allowable values. j

. Amendments 104_(Unit 1) and 82 (Unit 2), revised RTS '

Intermediate Range Neutron Flux, Source Range l Neutron Flux, and P-6 trip setpoints and allowable valuer. '

yg

7. WCAP-10271-P-A, Supplement , h 1,J=:ta^^- .

8. ' FSAR, Chapter 16.

9. Westinghouse Letter GP-'16696, November 5,1997.

10. WCAP-13632-P-A Revision 1," Elimination of Periodic Sensor Response Time Testing Requirements," January 1996.

11. WCAP-14036-P-A Revision 1, " Elimination of Periodic .

Protection Channel Response Time Tests," October 1998.

12. WeAP-N355-P-Q Aed. L, Odobw 1948.

m .

O %I3. . WC#- 10271-f Q L Suh/msedz, Rw I, Jun 199.

Vogtle Units 1 and 2 B 3.3.1-65 Rev. 2-3/99

r' ESFAS Instrumentation B 3.3.2 BASES ACTIONS B.1, B.2.1, and B.2.2 (continued)

Condition B applies to manualinitiation of:

. Sl; e Containment Spray; and

. Phase A lsolation.

This action addresses the train orientation of the SSPS for the 4 functions listed above. If a channelis inoperable,48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months is allowed l to retum it to an OPERABLE status. Note that for containment spray, '

failure of one or both channels in one train renders the train inoperable. Condition B, therefore, encompasses both situations.

The specified Completion Time is reasonable considering that there ;

are two automatic actuation trains and another manualinitiation train j OPERABLE for each Function, and the low probability of an event j occurring during this interval. If the channel cannot be restored to OPERABLL status, the unit must be placed in a MODE in which the LCO does not apply. This is done by placing the unit in at least MODE 3 within an additional 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months (54 hours6.25e-4 days 0.015 hours 8.928571e-5 weeks 2.0547e-5 months total time) and in D MODE S within an additional 30 hou:3 (84 hours9.722222e-4 days 0.0233 hours 1.388889e-4 weeks 3.1962e-5 months total time). The allowable Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power I con $tions in an orderly manner and without challenging unit systems.

C.1, C.2.1, and C.2.2 Condition C applies to the automatic actuation logic and actuation i relays for the following functions:

. Sl;

. Containment Spray;

. Phase A Isolation; and

. Semi-Automatic Switchover to Containment Sump.

/WSg/LTJ-e h

(continued)

Vogtle Units 1 and 2 ,

B 3.3.2-37 Revision No; O

7 INSERT 1 This Condition contains bypass times and Completion Times that are risk-informed. The i Configuration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses the l

equipment out ofservice risk monitor, a computer based tool that may be used to aid in the risk assessment 'ofon-line maintenance and to evaluate the change in risk from a '

component failure. The equipment out of service risk monitor uses the plant probabilistic -

i risk assessment model to evaluate the risk of removing equipment from service based on

. current plant configuration and equipment condition.

i l

l I

I 4

)

i ESFAS Instrumsntation B 3.3.2 BASES-

)

ACTIONS C.1, C.2.1, and C.2.2 (continued) h This action addresses the train orienistion of the SSPS nd the master and slave relays. If one channelis inoperable, hours are jggg_ Completion Time is reasonable considering that there is anothera channel OPERABLE, and the low probability of an event occurring during this interval. If the channel cannot be restored to OPERABLE l

status, the unit must be placed in a MODE in which the LCO does not i apply. This is done by placing the unit in at least MODE 3 within an l N

additional 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months 1)dours total time) and in MODE 5 within an acastional 30 hour3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months sphours total time). The Completion Times are leasonacie, Daseo on operating experience, to reach the required unit h conditions from full power conditions in an orderly manner and without challenging unit systems.

The Required Actions are modified by a Note that allows one. channel to be bypassed for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance testing or maintenance, provided the other train is OPERABLE. This allowance is based on the reliability analysis assumption of WCAP-10271-P-A (Ref. 7) that 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months is the average time required to perform shamnek surveillance.

hg D.1, D.2.1, and D.2.2 Condition D applies to:

. Containment Pressure-High 1; -

. Pressurizer Pressure- Low; e Steam Line Pressure- Low; e Containment Pressure- High 2; e Steam Line Pressure -- Negative Rate-High; and

. SG Water level-Low Low.

(WS62T 1-*if one char;nel is inoperablefours are allowed to restore the channel to OPERABLE status or to place it in the tripped (continued) 9 Vogtb Units 1 and 2 B 3.3.2 38 Revision No. O

INSERT 5 The 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months allowed for restoring the inoperable train to OPERABLE status isjustified in Reference 12.

I i

I l

1 I

l i

L

INSERT 1 This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses the equipment out of service risk monitor, a computer based tool that may be used to aid in the risk assessment ofon-line maintenance and to evaluate the change in risk from a component failure. The equipment out of service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk of removing equipment from service based on current plant configuration and equipment condition.

I d

ESFAS Instrumsntation B 3.3.2 BASES ACTIONS D.1, D.2.1, and D.2.2 (continued) condition. Generally this Condition applies to functionsthat operate !

- on two-out-of-three logic. Therefore, failure of one channel places the Function in a two-out-of-two configuration. One channel must be tripped to p. lace the Function in a one-out-of-three configuration that

/d56A7(r satisfies redundancy requirements. p15 Failure to restore the inoperable chan to OPERABLE statusor place it in the tripped condition within ours requires the unit be placed in MODE 3 within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and MODE 4 within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

The allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power conditions in an orderly manner and without challenging unit systems.

In MODE 4, these Functions are no longer required OPERABLE.

T ne quire etio re sfied a Note t t, with cha I ino rab allo utin urve' nce testi of an er che I wit {

gf7 g 3

han in b ss f up to hours. T the c nnel OPF BL tatus or place 6 ho allow inope o res e le ch el y in t inp cory..bn, d the 4 urs all ed for ting, a D_ ..

Ju/ifiedi Reference ' '

E.1, E.2.1, and E.2.2 Condition E applies to: '

s Containment Spray Containment Pressure- High 3.

IntSEA T T *This signal does not input to a control function. Thus, two-out-of-three 16gic is necessary to rneet acceptable protective ,

requirements. However, a two-out-of-three design would require tripping a failed channel. This is undesirable because a single failure would then cause spurious containmt nt spray initiation.

Spurious spray actuation is undesirable because of the cleanup problems presented. Therefore, these channels are designed with two-out-of-four logic so that a failed channel maybe bypassed rather than tripped. Note that one channel may be B-(continued)

Vogtie Units 1 and 2 B 3.3.2-3g Revision No. 0

INSERT 6 The 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months allowed to restore the channel to OPERABLE status or to place it in the tripped condition is justified in Reference 12.

l w

n s

T INSERT 7 The Required Actions are modified by a Note that allows placing one channel in bypass for up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months while performing routine surveillance testing. The 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months time limit isjustified in Reference 12.

c I

l

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p

?

l INSERT 1 This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses the equipment out of service risk monitor, a computer based tool that may be used to aid in the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk ofremoving equipment from service based cn

- current plant configuration and equipment condition.

i 1

4 1

1 i

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)

E ESFAS Instrumsntation l B 3.3.2 j l

BASES ACTIONS E.1, E.2.1, and E.2.2 (continued) 1 l

bypassed and still satisfy the single failure criterion. Furthermore. l with one channel bypassed, a single instrumentation channel failure l will not spuriously initiate containment spray.

To avoid the inadvertent actuation of containment spray, the l

inoperable channel should not be placed in the tripped condition.

Instead it is bypassed. Restoring the channel to OPERABLE l

status, or placing the inoperable channelin the bypass condition M ^

waninynours,is sufficient to assure that the Function remains l

OPERABLE and minimizes the time that the Function may be in a

. partial trip condition (assuming the inoperable channel has failed {

high). The Completion Time is fierther justified based on the low l probability of an event occurring during this interval. Failure to l

restore the inooerable channel to OPERABLE status, or place it in l the bypassed condition withinfhours, requires the unit be placed in l MODE 3pithin the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and MODE 4 within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . The allowed Completion Times are reasonable, based on I operating experience, to reach the required unit conditions from full i power conditions in an orderly manner and without challenging unit l systems. In MODE 4, this Function is no longer required OPERABLE.

- f g' The Required Actions are modifiec by a No S

at, withone channel inoperable, allows routine surveilla lee test of another channel !

with a channel in bypass for up to / hours Placing a second channel in the bypass condition for up to d hours for testing, purposes is acceptable based on the results of Reference 7 F.1, F.2.1, and F.2.2 It Condition F applies to:

. Manual Initiation of Steam Line isolation; and

. P-4 Interlock.

For the Manual Initiation and the P-4 Interlock Functions, this action addresses the train orientation of the SSPS. If (continued) 9 Vogtle Units 1 and 2 B 3.3.2-40 Revision No. O

ESFAS Instrumentation B 3.3.2 BASES L

l ACTIONS F.1, F.2.1, and F.2.2 (continued) !

a channelis inoperable,48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months is allowed to retum it to OPERABLE status. The specified Completion Time is reasonable considering the

! nature of this Function, the available redundancy, and the low l probability of an event occurring during this interval. If the channel cannot be retumed to OPERABLE status, the unit must be placed in l

MODE 3 within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and MODE 4 within the following l 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . The allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full L power in.an orderly manner and without challenging unit systems. In ,

l MODE 4, the unit does not have any analyzed transients or conditions l l= that require the explicit use of the protection function noted above. ;

.G.1, G.2.1, and G.2.2 l

Condition G applies to the automatic actuation logic and actuation I relays for the Steam Line Isolation and AFW actuation Functions. l L

M '

/M.9R7 ]"The action a resses the train orientation of the SSPS and the master and ave relays for these functions. If one channel is inoperable, hours are allowed to restore the channel to op ERABLE status.#The Completion Time for restoring a channel to i fggg g OP ERABLE status, is reasonable considering that there is another channel OPERABLE, and the low probability of an event occurring during this i m al. If the channel cannot be returned to OPERABLE status, the unit must be brought to MODE 3 with'.h the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and MODE 4 within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . The allowed

.- Corr.pletion Times are reasonable, based on operating experience, to reach the required unit conditions from full power conditions in an orderly manner and without challenging unit systems. Placing the unit in MODE 4 removes all requirements for OPERABILITY of the protection channels and actuation functions. In this MODE, the unit does not have analyzed transients or conditions that require the explicit use of the protection functions noted above. .

The Required Actions are modified by a Note that allows one channel to be bypassed for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance I

(continued)

Vogtle Units 1 and 2 B 3.3.2-41 Revision No. 0 2 _

J:1 INSERT 1 I This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses the equipment out of service risk monitor, a computer based toc! that may be used to aid in the risk assessment of on-line maintenance and to evaluate the change in risk from a .

component failure. The equipment out ofservice risk monitor uses the plant probabilistic risk assessment model to evaluate the risk of removing equipment from service based on current plant configuration and equipment condition. ;

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I INSERT 8 l j l' The 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months allowed for restoring the inoperable train to OPERABLE status is justified !

in Reference 12.

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ESFAS Instrumsntation B 3.3.2 i BASES ACTIONS G.1, G.2.1, and G.2.2 (continued) ter'ing provided the other channelis OPERABLE. This allowance is based on the reliability analysis (Ref,7) assumption that 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months is the average time required to perform channel surveillance.

H.1 and H.2 Condition H applies to the automatic actuation logic and actuation relays for the Turbine Trip and Feedwater isolation Function.

IN3tilf f This action addresses the train orientation<of\

master and slave relays for this Function. If one train is inope ble, j

-[/ hours are allowed to restore the train to OPERABLE status r the unit must be placed in MODE 3 within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . The Completion Time for restoring a train to OPERABLE status is reasonable considering that there is another train OPERABLE, and l the low probability of an event occurring during this interval. The i allowed Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is reasonable, based on operating experience, to reach MODE 3 from full power conditions l in an orderly manner and without challenging unit systems. These Functions are no longer required in MODE 3. Placing the unit in MODE 3 removes all requirements for OPERABILITY of the protection channels and actuation functions. In this MODE, the unit does not have analyzed transients or conditions that require the explicit use of the protection functions noted above. l The' Required Actions are modified by a Note that allows one train to be bypassed for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance testing or

' maintenance provided the other train is OPERABLE. This allowance is based on the reliability analysis (Ref 7) assumption that 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months is the average time required to perform channel surveillances.

.1.1 and 1.2

. Condition I applies to:

. SG Water Level-High High (P-14).

WsM1L*

(continued)

Vogtle Units 1 and 2 B 3.3.2-42 Revision No. 0

m -

l INSERTI

~

This Cond' 7n contains bypass times and Completion Times that are risk-informed. The Configuration PJsk Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant confJurations. The CRMP uses the equipment out of service risk monitor, a computer based tool that may be used to aid in the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk of removing equipment from service based on current plant configuration and equipment condition.

G k

e

\

.m

INSERT 9 The 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months allowed for restoring the inoperable train to OPERABLE status isjustified in Reference 12.

ESF'AS Instrumentation B 3.3.2 BASES ACTIONS l.1 and 1.2 (continued) 7L If one channelis inoperable,# hours are allowed to restore one l channel to OPERABLE status or to place it in the tripped cendition, if placed in the tripped condition, the Function is then in a partial trip condition where one-out-of-three logic will result in actuation. 419e>

/NS8d7 /P ; C 'er C:m;'9- - te !"e"-d ' "im.x 1 Failure to restore

. the inoperable channel to OPERABLE status or place it in the tripped condition withirl#Tiours requires the unit to be placed in MODE 3 1*9 witnin the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . The allowed Completion Time of G hours is reasonable, based on operating experience, to reach MODE 3 from full power conditions in an orderly mannar and without challenging unit systems. In MODE 3, this Function is no longer required OPERABLE.

The uired tions are modified Note , with ojaathannel ino rable owsr e surv nce tes ' of anotMchannel ae nneli pass for to 4 h . The 6 urs allowe '

/M / lace eino able ch elin the pped con ion,and '

4t rs all ed for a annel to in the b ssed con ' n, a j tified ' Refere

/

7. . _

f

'D J.1 and J.2 Condition J applies to the AFW pump start on trip of all MFW pumps.

This action addresses the train orien'tation for the auto start fur : tion of the AFW System on loss of all MI'W pumps. The OPERABILITY of the AFW System must be assured by allowing automatic start of the AFW System purnps. If a channelis inoperable,48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months are allowed to return it to an OPERABLE status. If the function cannot be retumed to an ' OPERABLE status,6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months are allowed to place the unit in MODE 34 The allowed Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is reasonable, based on operating experience, to reach MODE 3 from full power conditions in an orderly manner and without challenging unit systems. In MODE 3, the unit does' not have any analyzed

. transients or conditions that require the explicit use of the protection function noted above. The allowance of 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months to return the train to an OPERABLE status is justified in Referenco 7.

9 .

(continued)

Vogtle Units 1 and 2 B 3.3.2-43 Revision No. O

c .-

l

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INSERT 10 The 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months allowed to restore one channel to OPERABLE status or to place it in the tripped condition isjustiGed in Reference 12. '

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- e, ,

1 1 I INSERT 11- )

i

- The Required Actions are modified by a Note that allows placing one channel in bypass

~ for up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months while performing routine surveillance testing. The 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months time limit l- isjustified in Reference 12.

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i k

1 b

ESFAS Ins' .msntation B 3.3.2 BASES ACTIONS K.1, K.2.1, and K.2.2 (continued)

Condition K applies to:

RWST Level-Low Low Coincident with Safety injection.

/N5647f 7wSr teyei_ to, to, coincieen, witn si p,oyiee, ecio, tionq switchover to the containment sump. Note that this Function requires the bistables to energize to perform their required action.

The failure of up to two channels will not prevent the operation of l this Function. However, placing a failed channelin the tripped I condition could result in a premature switchover to the sump, prior I to the injection of the minirnum volume from the RWST. Placing the inoperabe channel in bypass results in a two-out-of-three logic configuratiun, which satisfies the requirement to allow another failure without disabling actuation of the switchover when required.

Restoring the channel to OPERABLE status or placing the

' inoperable'channelin the bypass condition withingnours is sufficient to ensure that the Function rema;ns OPERABLE, and 7b j minimizes the time that the Function may be in a partial trip '

condition (assuming the inoperable channel has failed hiah). The

% ghour Completion Time is justified in Referencer If the channel

{

cannot be retumed to OPERABLE status or placed in the bypass i condition withirighours, the unit must be brought to MODE 3 within 72 ine ioiiowing e nours one uoDE s wiinin tne nexi so neurs. Tne '

allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power i conditions in an orderly manner and without challenging unit i systems. In MODE s, the unit does not have any analyzed transients or conditions that require the explicit use of the protection functions noted above.

l The quir A ns are odified a No at,wi onec nnel ino ra , all rout' survell ce te g of a r ch nel

.a an Iin b ss for u o 4 ho for su elllan estin

/A/j[/2[/2+ he tal 12 hou to reac OD and 4 urs for seco /

ch nel be b ssed is cepta e base n the r uits o R fere 7.

(continued)

Vogtle Units 1 and 2 B 3.3.2-44 Revision No. O

il - INSERT 1 This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk Management Program (CRMP) is used to assess changes in core 1 damage frequency resulting from applicable plant configurations.' The CRMP uses the equipment out of service risk monitor, a computer based tool that may be used to aid in

the risk assessment ofon-line maintenance and to evaluate the change in risk from a component failure. The equipment out of service risk monitor uses the plant probabilistic

~r isk assessment model to evaluate the risk ofremoving equipment from service based on

- current plant configuration and equipment condition'.

L l

e e

INSERT 12 The Required Actions are modified by a Note that allows placing one channel in bypass .

- for up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months while performing routine surveillance testing. The channel to be tested

~

can be tested in bypass with the inoperable channel also in bypass. The 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months time limit isjustified in Reference 12.

I i

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1 i

ESFAS instrumentation B 3.3.2 BASES REFERENCES .

Amendments 43 and 44 (Unit 1) and 23 and 24 (Unit (continued) 2), revised ESFAS Interlocks Pressurizer P-11 trip setpoint and allowable value.

7. WCAP-10271-P-A, Supplement 2, Rev.1, June 1990.

8. FSAR, Chapter 16.

9. Westinghouse Letter GP-16696, November 5,1997. l

10. WCAP-13632-P-A Revision 2, " Elimination of Pressure Sensor i Response Time Testing Requirements," January 1996.

11. WCAP-14036-P-A Revision 1, " Elimination of Periodic Protection Channel Response Time Tests," October 1998.

I2. WW-/4335-f-f), AtM.1, M0bW lW8 O

O Vogtle Units 1 and 2 8 3.3.2-52 Rev. 2-3/99

Ercios re 4 Vogtle Electric Generating Plant Request to Revise Technical Specifications Reactor Trip System and Engineered Safety Feature Actuation System Completion Times and Bypa.ss Test Times Clean Typed TS and Bases Pages e

RTS Instrumentation 3.3.1 i i

' ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME D. .One Power Range' . - - - - - - - - - - - - - -

NOTE---- - -

' Neutron Flux--High A channel may be bypassed for up L , channelinoperable. to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months for surveillance testing -

and setpoint adjustment. '

D.1.1 Place channelin trip. 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months l AND.

D.1.2 Reduce THERMAL 78 hours9.027778e-4 days 0.0217 hours 1.289683e-4 weeks 2.9679e-5 months l

, POWER to s 75% RTP. )

i QB I o D.2.1 Place channelin trip. 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months I

bL Q

]

NOTE --------

Only required to be performed when the Power Range Neutron Flux input to OPTR is inoperable and THERMAL POWER 2 75% RTP.

D.2.2 . Perform SR 3.2.4.2. Once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months QB l

D.3 Be in MODE 3. - 78 hours9.027778e-4 days 0.0217 hours 1.289683e-4 weeks 2.9679e-5 months l (continued)

-1 L

-Vogtle Units 1 and 2 3.3.1-2 Amendment No. (Unit 1)

Amendment No. (Unit 2) l l

t.

Nai =

RTS Instrum:ntation 3.3.1

? - ACTIONS I(continued) 1-CONDITION ~ REQUIRED ACTION COMPLETION TIME E. lOne channelinoperable. --------------- NOT E--------------------

A channel may be bypassed for up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months for surveillance _ testing. l .

l E.1 Place channelin trip. 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months l- l L_ 'QB .

E.2 Be in MODE 3. 18 hours2.083333e-4 days 0.005 hours 2.97619e-5 weeks 6.849e-6 months l 1

F. ' THERMAL POWER F.1 ReduceTHERMAL 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months L

> P-6 and < P-10, one .

POWER to < P-6.

L - Intermediate Range .

. Neutron Flux channel - QB ;

- inoperable.

F.2 increase THERMAL- 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months :

POWER to > P-10.

l< t G. THERMAL POWER . G.1 Suspend operations .immediately l l > P-6 and < P-10, two -- involving positive reactivity intermediate Range additions.

Neutron Flux channels inoperable. ANQ G.2 Reduce THERMAL ~ 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months POWER to < P-6.

H.' THERMAL POWER H.1 Restore channel (s) to Prior to increasing L < P-6, one or two OPERABLE status. THERMAL POWER L

intermediate Range . to > P-6

- Neutron Flux channels Inoperable.

l; _, .

L (continued)

'n L

- Vogtle Units 1 and 2. 3.3.1 -3 Amendment No. (Unit 1)

Amendment No. (Unit 2)

v '

RTS Instrumentation 3.3.1

' ACTIONS (continued) .

CONDITION ~ ' REQUIRED ACTION. COMPLETION TIME

[M.- lOne channelinoperable. - - - - - - - -

--NOTES ------

1. For RC o bus undervoltage or -

underfrequency instrument

. functions; the inoperable.

channel may be bypassed for L

< up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months for surveillance

" testing of other channels.

2. For otherinstrument functions; a channel _ may be bypassed for ,

up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months for surveillance j -l testing.

b , 'M.1 Place channelin trip. 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months l

QBl

n M.2 - Reduce THERMAL . 78 hours9.027778e-4 days 0.0217 hours 1.289683e-4 weeks 2.9679e-5 months POWER to < P-7. l j

I N. ;One Reactor Coolant- -----------------NOTE-------------------

Fiow-Low (single loop) 'A channel may be bypassed for up !

channel inoperable.- to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months for surveillance testing. l

' i i f N.1. '. Place channel in trip. 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months l N.2 Reduce THERMAL 76 hours8.796296e-4 days 0.0211 hours 1.256614e-4 weeks 2.8918e-5 months j

, , P.OWER to < P-8.

(continued) .

1

r

((;_ '

._Vogtle Units 1 and 2 3.3.1-5 Amendment No. (Unit 1)

Amendment No. (Unit 2) m t

FT 1

l RTS Instrum ntation l 3.3.1 t

i ACTIONS ' (continued)

. CONDITION REQUIRED ACTION COMPLETION TIME l O. One Low Fluid oil ---- ---

NOTE- ---------- !

. pressure Turbine Trip - A channel may be bypassed for up channelinoperable. to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months for surveillance testing. l 1

l O.1 Place channel in trip. 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months l

M 1

0.2 Reduce THERMAL 76 hours8.796296e-4 days 0.0211 hours 1.256614e-4 weeks 2.8918e-5 months l

POWER to < P-9.

P. One or more Turbine P.1- Place channel (s) in trip. 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months j stop valve Closure Turbine Trip channels @

inoperable.

P.2 Reduce THERMAL 76 hours8.796296e-4 days 0.0211 hours 1.256614e-4 weeks 2.8918e-5 months l POWER to < P-9.

Q.' One train inoperable. ---------------------NOTE------------------- 1 One train may be bypassed for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance testing provided the other train is .

OPERABLE.

O.1 Restore train to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months l OPERABLE status.

L O.2 Be in MODE 3. 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months l (continued) i-i Vogtle Units 1 and 2 - 3.3.1-6 Amendment No. (Unit 1)

Amendment No. (Unit 2) l

n l

RTS Instrumentation 3.3.1 i ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME R. - One or more channels R.1 . Verify interlock is in 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months inoperable, required state for. existing unit conditions. ;

QB R.2 Be in MODE 3. 7 hours8.101852e-5 days 0.00194 hours 1.157407e-5 weeks 2.6635e-6 months 4 S. ' One or more channels S.1 . Verify interlock is in 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months inoperable. required state for existing unit conditions.

1 S.2 Be in MODE 2. 7 hours8.101852e-5 days 0.00194 hours 1.157407e-5 weeks 2.6635e-6 months

.T. One RTB train ------------------- N OTE S - - .

inoperable. 1. One train may be bypassed for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for surveillance- ;

testing, provided the other train i is OPERABLE.

2. One RTB may be bypassed for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for ma,ntenance i

on undervoltage or shunt trip mechanisms, provided the other train is OPERABLE.

3. One RTB train may be bypassed for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for concurrent surveillance testing ;

of the RTB and automatic trip logic, provided the other train is OPERABLE.

T.1 Restore train to 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months OPERABLE status.

,1 t.

T.2 Be in MODE 3. 7 hours8.101852e-5 days 0.00194 hours 1.157407e-5 weeks 2.6635e-6 months (continued)

Vogtle Units 1 and 2 3.3.1-7 Amendment No. (Unit 1)

Amendment No. (Unit 2)

L

ESFAS Instrumnntation 3.3.2 ACTIONS (continued)- )

. CONDITION REQUIRED ACTION COMPLETION TIME C. One train inoperable. ------- N OT E------------------

One train may be bypassed for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance testing provided the other train is OPERABLE.

C.1 Restore train to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months l OPERABLE status.

. C.2.1 Be in MODE 3. 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months l AND C.2.2 Be in MODE 5. 60 hours6.944444e-4 days 0.0167 hours 9.920635e-5 weeks 2.283e-5 months l D. One channelinoperable. - - - - - - - - - - -

NOTE -----------

A channel may be bypassed for up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months for surveillance testing.

l D.1 Place channelin trip. 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months l D.2.1 .Be in MODE 3. 78 hours9.027778e-4 days 0.0217 hours 1.289683e-4 weeks 2.9679e-5 months l AND l D.2.2 Be in MODE 4. 84 hours9.722222e-4 days 0.0233 hours 1.388889e-4 weeks 3.1962e-5 months l (continued)

' Vogtle Units 1 and 2 3.3.2 2 Amendment No. (Unit 1)

Amendment No. (Unit 2)

y I

ESFAS Instrumentation 3.3.2

.' ACTIONS-'(continued)

. CONDITION REQUIRED ACTION COMPLETION TIME E. ::One Containment- --------------------NOTE------------------

.. Pressure High-3 channel'- One additional channel may be

- inoperable.-: bypassed for up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months for surveillance testing.

E.1 Place channelin bypass. 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months

,U l

E.2.1 : Be in MODE 3. 78 hour9.027778e-4 days 0.0217 hours 1.289683e-4 weeks 2.9679e-5 months s- l bhlQ

' SL E.2.2 Be in MODE 4. .84 hours9.722222e-4 days 0.0233 hours 1.388889e-4 weeks 3.1962e-5 months l'

F, One channelinoperable; F.1 Restore channel to 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months

, OPERABLE status.

QB F.2.1 - . Be in MODE 3. 54 hours6.25e-4 days 0.015 hours 8.928571e-5 weeks 2.0547e-5 months AND F.2.2 Be In MODE 4. 60 hours6.944444e-4 days 0.0167 hours 9.920635e-5 weeks 2.283e-5 months .

(continued) i l

Vogtle Units 1 and 2 - 3.3.2-3 Amendment No. (Unit 1)

Amendment No. (Unit 2) c

.1 -

i;

ESFAS instrumentation 3.3.2

, ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME G.- One train inoperable. -----------------NOTE-------------------

One train may be bypassed for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance testing provided the other train is OPERABLE.

G.1 Restore train to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months l OPERABLE status.

OB G.2.1 Be in MODE 3. 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months l AND G.2.2 Be in MODE 4. 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months l H. > One train inoperable. -

. ------------- NOT E------------------

One train may be bypassed for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance testing provided the other train is OPERABLE.

H.1 Restore train to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months OPERABLE status.

l

-QB '

H.2 Be in MODE 3. 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months l

(continued) i l

Vogtle Units 1 and 2 3.3.2-4 Amendment No. (Unit 1)

Amendment No. (Unit 2) i.

i.'

ESFAS instrumnntation ;

3.3.2 ACTIONS (continued)

CONDITION ' REQUIRED ACTION COMPLETION TIME

- 1. One channelinoperable. ------------------ NOT E-------

A channel may be bypassed for up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months for surveillance testing. !

l.1 Place channelin trip. 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months -

l 1.2 ' Be in MODE 3. 78 hours9.027778e-4 days 0.0217 hours 1.289683e-4 weeks 2.9679e-5 months l

' J. One Main Feedwater J.1 Restore channel to 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months

' Pumps trip channel OPERABLE status, inoperable.

2 J.2 Be in MODE 3. 54 hours6.25e-4 days 0.015 hours 8.928571e-5 weeks 2.0547e-5 months K. One RWST Level- Low -

NOTE-- ---------- ,

Low channelinoperable. One additional channel may be bypassed for up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months for surveillance testing.

K.1 ' Place channelin bypass. 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months !

2 K.2.1 Be in MODE 3. 78 hours9.027778e-4 days 0.0217 hours 1.289683e-4 weeks 2.9679e-5 months l AND K.2.2 Be in MODE 5. 108 hours0.00125 days 0.03 hours 1.785714e-4 weeks 4.1094e-5 months l l

(continued) l i

l l

Vogtle Units 1 and 2 3.3.2-5 Amendment No. (Unit 1)

!- Amendment No. (Unit 2)

RTS Instrumentation B 3.3.1 BASES-ACTIONS ' C.1 and 0.2 (continued) i

. - Manual Reactor Trip; e: ^ RTBs; 1

e e RTB Undervoltage and Shunt Trip Mechanisms; and

. Automatic Trip Logic.

' This action addresses the train orientation of the SSPS for these Functions. With one channel or train inoperable, the inoperable channel or train must be restored to OPERABLE status within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months . If the affected Function (s) cannot be restored to OPERABLE status within the allowed 48 hour5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months Completion Time, the unit must be placed in a MODE in which the requirement does not apply. To achieve this status, the RTBs must be opened within the next hour.' The additional hour provides sufficient time to accomplish the action in an orderly manner. With the RTBs open, these Functions are no longer required. ;

The Completion Time is reasonable considering that in this Condition, the remaining OPERABLE train is adequate to perform the safety function, and given the low probability of an event -

occurring during this interval.

D.1.1. D.1.2. D.2.1. D.2.2. and D.3 Condition D applies to the Power Range Neutron Flux-High Function. This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk - ,

Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations.

The CRMP uses the equipment out of service risk monitor, a computer based tool that may be used to aid in the risk j assessment of on-line maintenance and to evaluate the change in !

risk from a component failure. The equipment out of service risk I monitor uses the plant probabilistic risk assessment model to

. evaluate the risk of removing equipment from service based on - i current plant configuration and equipment condition. ;

(continued)

_ Vogtle Units 1 and 2 B 3.3.1-42

f RTS Instrumentation B 3.3.1 BASES ACTIONS ,

. D.1.1. D.1.2. D.2.1. D.2.2. and D.3 (continued)

The NIS power range detectors provide input to the CRD System

. and the SG Water. Level Control System and, therefore, have a two-out-of-four trip logic. A known inoperable channel must be placed in the tripped condition. This results in a partial trip l condition requiring only one-out-of-three logic for actuation. The 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months allowed to place the inoperable channel in the tripped l

, condition is justified in WCAP-14333-P A (Ref.12).

In addition to placing the inoperable channel in the tripped condition, THERMAL POWER must be reduced to s 75% RTP l within 78 hours9.027778e-4 days 0.0217 hours 1.289683e-4 weeks 2.9679e-5 months . Reducing the power level prevents operation of the l l

core with radial power distributions beyond the design limits. With one of the NIS power range detectors inoperable,1/4 of the radial power distribution monitoring capability is lost.

As an alternative to the above actions, the inoperable channel can -

be placed in the tripped condition within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months and the OPTR l monitored once every 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months as per SR 3.2.4.2, OPTR verification. Calculating OPTR every 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months compensates for l

the lost monitoring capability due to the inoperable NIS power r

range channel and allows continued unit operation at power levels i s 75% RTP. The' 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Frequency is consistent with LCO 3.2.4, I l

"OUADRANT POWER TILT RATIO (OPTR)."

L If the Required Actions described above cannot be met within the

'~

specified Completion Times, the unit must be placed in a MODE where this Function is no longer required OPERABLE. An additional 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months beyond the Completion Time for Required Action D.1.1 and Required Action D.2.1 are allowed to place the unit in MODE 3. Six hours is a reasonable time, based on operating experience, to reach MODE 3 from full power in an orderly manner and without challenging unit systems. If Required

l. Actions D.2.2 cannot be completed within their allowed

l. Completion Times, LCO 3.0.3 must be entered.

l The Required Actions have been modified by a Note that allows L placing a channelin the bypass condition for up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months while l performing' routine. surveillance testing. With one channel inoperable, the Note also allows routine surveillance testing of l another channel with a channel in bypass. The Note also allows ny ,

placing a channel in the bypass condition to allow setpoint JE adjustments when required to reduce the Power Range Neutron (continued)

L Vogtle Units 1 and 2 B 3.3.1-43 i

I m

RTS Instrumentation B 3.3.1

!l

. BASES

' ACTIONS ' D.1.1. D.'1.2. D.2.1. D.2.2. and D.3 (continued)

Flux-High setpoint in accordance with other Technical Specifications. The 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months time limit is justified in Reference 12. l Required Action D.2.2 has been modified by a Note which only. ~l requires SR 3.2.4.1 to be performed if the Power Range Neutron Flux input to QPTR becomes inoperable. Failure of a component in the Power Range Neutron Flux channel which renders the High Flux Trip function inoperable may not affect the capability to monitor OPTR. As such, determining OPTR using the movable incore detectors once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months may not be

, necessary.

1 E.1 and E.2 ;

Condition E applies to the following reactor trip Functions:

I e Power Range Neutron Flux-Low;

.- Overtemperature AT; e Overpower AT;

Power Range Neutron Flux-High Positive Rate;

Pressurizer Pressure-High; and j

. . SG Water Level-Low Low.

This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses

. the equipment out of service risk monitor, a computer based tool that may be used to aid in the risk assessment of on-line maintenance and to evaluate the change in risk from a component

' failure. The equipment out of service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk of removing equipment from service based on current plant configuration and equipment condition.

(

I I

.i I

(continued) l l

.Vogtle Units 1 and 2 B 3.3.1-44 t n i k.

RTS Instrumentation B 3.3.1 l

l

' BASES ACTIONS E.1 and E.2 (continued)

A known inoperable channel must be placed in the tripped condition within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months . Placing the channel in the tripped l condition results in a partial trip condition requiring only one-out-of-two logic for actuation of the two-out-of-three trips and ;

one-cut-of-three logic for actuation of the two-out-of-four trips. j The 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months allowed to place the inoperable channel in the tripped condition is justified in Reference 12.

If the operable channel cannot be placed in the trip condition within the specified Completion Time, the unit must be placed in a MODE where these Functions are not required OPERABLE. An !

additional 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is allowed to place the unit in MODE 3. Six hours is a reasonable time, based on operating experience, to place the unit in MODE 3 from full power in an orderly manner and without challenging unit systems. 1 The Required Actions have been modified by a Note that allows placing a channel in the bypassed condition for up to l 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months while performing routine surveillance testing. With one channelinoperable, the Note also allows routine 1 surveillance testing of another channel with a channelin bypass.

The 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months time limit is justified in Reference 12. l F.1 and F.2 Condition F applies to the Intermediate Range Neutron Flux trip when THERMAL POWER is above the P-6 setpoint and below the P-10 setpoint and one channel is inoperable. Above the P-6 setpoint and below the P-10 setpoint, the NIS intermediate range detector performs the monitoring Functions. If THERMAL POWER is greater than the P-6 setpoint but less than the P-10 setpoint,24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months are allowed to reduce THERMAL POWER i below the P-6 setpoint or increase to THERMAL POWER above the P-10 setpoint. The NIS Intermediate Range Neutron Flux channels must be OPERABLE when the power level is above the capability of the source range, P-6, and below the capability of the power range, P-10. If THERMAL POWER is greater than the P-10 setpoint, the NIS power rage detectors perform the

- monitoring and protection functions and the intermediate range is not required. The Completion Times allow for a slow and controlled power adjustment above P-10 or below P-6 and take (continued)

LVogtle Units 1 and 2 B 3.3.1-45

RTS Instrumentation B 3.3.1 BASES ACTIONS ~ F.1 and F.2 (continued) into account the redundant capability afforded by the redundant OPERABLE channel, and the low probability of its failure during this period. This action does not require the inoperable channel to be tripped because the Function uses one-out-of-two logic. '

Tripping one channel would trip the reactor. Thus, the Required l Actions specified in this Condition are only applicable when {

channel failure does not result in reactor trip.

l l

i G.1 and G.2 Condition G applies to two inoperable Intermediate Range Neutron Flux trip channels when THERMAL POWER is above -

the P-6 setpoint and below the P-10 setpoint. Required Actions specified in this Condition are only applicable when channel failures do not result in reactor trip. Above the P-6 setpoint and below the P 10 setpoint, the NIS intermediate range detector performs the monitoring Functions. With no intermediate range channels OPERABLE, the Required Actions are to suspend operations involving positive reactivity additions immediately. However, this does not preclude actions to maintain or increase reactor vessel inventory or place the unit in a safe conservative condition provided the required SDM is maintained.

The suspension of positive reactivity additions will preclude any l power level increase since there are no OPERABLE Intermediate ;

Range Neutron Flux channels. The operator must also reduce j THERMAL POWER below the P-6 setpoint within two hours, j 1

Below P-6, the Source Range Neutron Flux channels will be able to monitor the core power level. The Completion Time of 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months will allow a slow and controlled power reduction to less than the P-6 setpoint and takes into account the low probability of occurrence of an event during this period that may require the protection afforded by the NIS Intermediate Range Neutron Flux trip.

H.1 Condition H applies to the Intermediate Range Neutron Flux trip when THERMAL POWER is below the P-6 setpoint and one or two channels are inoperable. Below the P-6 setpoint, the NIS source range performs the monitoring and protection functions.

The Inoperable NIS intermediate range channel (s) must be returned to OPERABLE status prior to increasing power above the (continued)

Vogtle Units 1 and 2 B 3.3.1-46

RTS Instrumentation i B 3.3.1 1 1 ( BASES

ACTIONS ~ H.1 (continued)

' P-6 setpoint. The NIS intermediate range channels must be OPERABLE when the power level is above the capability of the source range, P-6, and below the capability of the power range, P-10.

e y

Condition I applies to one inoperable Source Range Neutron Flux trip channel when in MODE 2, below the P-6 setprint, and

. performing a reactor startup. With the unit in this Condition, below P-6, the NIS source range performs the monitoring and protection -

functions. With one of the two channels inoperable, operations involving positive reactivity additions shall be suspended -

immediately.

This will preclude any power escalation. With only one source range channel OPERABLE, core protection is severely reduced and any actions that add positive reactivity to the core must be suspended immediately. However, this does not preclude actions to maintain or place the unit in a safe conservative condition provided the required SDM is maintained.

El Condition J applies to two inoperable Source Range' Neutron Flux trip channels when in MODE 2, below the P-6 setpoint, and performing a reactor startup, or in MODE 3,4, or 5 with the RTBs closed and the CRD System capable of rod withdrawal. With the unit in this Condition, below P-6, the NIS source range performs

- the monitoring and protection functions. With both source range channels inoperable, the RTBs must be opened immediately.

With the RTBs open, the core is in a more stable condition and the unit enters Condition L.

K.1 and K.2 Condition K applies to one inoperable source range channel in MODE 3, 4, or 5 with the RTBs closed and the CRD System capable of rod withdrawal. With the unit in this Condition, below (continued)

Vogtle Units 1 and 2 B 3.3.1-47

RTS Instrumentation B 3.3.1 BASES-ACTIONS K.1 and K.2 (continued)

. P-6, the NIS source range performs the monitoring and protection functions.- With one of the source range channels inoperable,48

= hours is allowed to restore it to an OPERABLE status, if the

channel cannot be returned to an OPERABLE status,1 additional hour is allowed to open the RTBs. Once the RTBs are open, the ..

H core is in a more stable condition and the unit enters Condition L.

The allowance of 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months to restore the channel to OPERABLE status, and the additional hour to open the RTBs, are justified in Reference 7.

1::d Condition L app'ies when the required number of OPERABLE '

Source Range Neutron Flux channels is not met in MODE 3,4, or 5 with the RTBs open. With the unit in this Condition, the NIS -

source range performs the monitoring and protection functions.

With less than the required number of source range channels

' OPERABLE, operations involving positive reactivity additions shall j be suspended immediately. This will preclude any power . >

escalation. However, this does not preclude actions to maintain or increase _ reactor vessel inventory or place the unit in a safe conservative condition provided the required SDM is maintained.

Note that the source range also continues to provide input to the high flux at shutdown alarm (HFASA - LCO 3.3.8). LCO 3.3.8 requires that the HFASA receive input from two source range

.- channels for the HFASA to be OPERABLE.

i M.1 and M.2 Condition M applies to the following reactor trip Functions:

. Pressurizer Pressure-Low;

.. Pressurizer Water Level-High;

. Reactor Coolant Flow-Low (Two Loops);

. Undervoltage RCPs; and

. Underfrequency RCPs.

(continued)

Vogtle Units 1 and 2. B 3.3.1-48

l l

RTS Instrumentation I

., B 3.3.1 BASES l

ACTIONS - M.1 and M.2 (continued)

This Condition contains bypass and Completion Times that are

. risk-informed. The Configuration Risk Management Program

. (CRMP) is used to assess changes in core damage frequency ,

resulting from applicable plant configurations. The CRMP uses I the equipment out of service risk monitcr, a computer based tool that may be used to aid in the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk of- l removing equipment from service based on current plant

]

configuration and equipment condition.

'With'one channel inoperable, the inoperable channel must be placed in the tripped condition within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months . Placing l the channel in the tripped condition results in.a partial trip condition requiring only one additional channel to initiate a reactor trip above the P-7 setpoint (and below the P-8 setpoint for the Reactor Coolant Flow- Low- Two Loops function).' These Functions do not have to be OPERABLE below the P-7 setpoint because for the Pressurizer Water Level- High transients are slow enough for manual action, and for the other functions DNB is not as serious a concern due to the Low Power Level. The 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months allowed to place - l the channel in the tripped condition is justified in !

Reference 12.- An additional 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is allowed to reduce l THERMAL POWER to below P-7 if the inoperable channel cannot be restored to OPERABLE status or placed in trip within the specified Completion Time.

Allowance of this time interval takes into consideretion the

_. redundant capability provided by the remaining redundant OPERABLE channel, and the low probability of occurrence of an event during this period that may require the protection afforded by the Functions associated with Condition M.

The Required Actions have been modified by two Notes. Note 1 applies only to the RCP undervoltage and underfrequency instrument functions. These functions do not have installed bypass capability. Therefore, the allowance to place these instrument channels in bypass is more limited. Note 1 allows the inoperable undervoltage or underfrequency instrument channel to be bypassed for up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months for surveillance testing of other l

channels.

(continued) iVogtle Units 1 and 2 B 3.3.1-49

RTS Instrumentation B 3.3.1 BASES 1 ACTIONS . M.1 and M.2 (continued) -

Note 2 allows placing a channel in the bypassed condition for up l to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months while performing routine surveillance testing. Note 2 l

~ applies to all Condition M instrument functions except RCP undervoltage and underfrequency. With one channel inoperable,

- Note 2 also allows routine surveillance testing of another channel with a channel in bypass. The 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months time limit of both Notes is

. Justified in Reference 12.

N.1 and N.2 l

Condition N applies to the Reactor Coolant Flow- Low (Single Loop) reactor trip Function.. This Condition contains bypass times and Completion Times that are risk-informed.

The Configuration Risk Management Program (CRMP) is used '

to assess changes in core damage frequency resulting from applicable plant configbrations. The CRMP uses the equipment out of service risk monitor, a computer based tool

-.that may be used to aid in the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk of removing equipment from service based on current plant configuration and equipment condition.-. With one channel inoperable,~ the inoperable channel must be placed in trip within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months . If the channel cannot be restored to' OPERABLE status or the channel placed in trip within the 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , then THERMAL POWER must be reduced below the P-8 setpoint within the next 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months . This places the unit in a MODE where the LCO is no longer applicable. This trip Function does not have to be OPERABLE below the P-8 l setpoint because other RTS trip Functions provide core I protection below the P 8 setpoint. The 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months allowed to l restore the channel to OPERABLE status or place in trip and the 4 additional hours allowed to reduce THERMAL POWER to below the P-8 setpoint are justified in Reference 12. I The Required Actions have been modified by a Note that allows placing a channel in the bypassed condition for up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months while performing routine surveillance testing. With one channel inoperable, the Note allows routine surveillance testing of another channel with a channel in bypass. The12 hour time limit is justified in Reference 12.

(continued)

Vogtle Units 1 and 2 B 3.3.1-50

RTS Instrumentation B 3.3.1 BASES ACTIONS O.1 and 0.2 (continued)

Condition O applies to Turbine Trip on Low Fluid Oil Pressure.

This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses the equipment out of service risk monitor, a computer based tool that may be used to aid in the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk of removing equipment from service based on current plant configuration and equipment condition. With one channel inoperable, the inoperable channel must be placed in the trip condition within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months . If placed in the tripped condition, this l results in a partial trip condition requiring only one additional channel to initiate a reactor trip. If the channel cannot be restored to OPERABLE status or placed in the trip condition, then power must be reduced below the P-9 setpoint within the next 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months . l The 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months allowed to place the inoperable channel in the I tripped condition and the 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months allowed for reducing power are justified in Reference 12. l The Required Actions have been modified by a Note that allows i placing a channel in the bypassed condition far up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months I while performing routine surveillance testing.- With one channel inoperable, the Nots also allows routine surveillance testing of another channel with a channel in bypass. The 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months time limit -

is justified in Reference 12.

P.1 and P.2 Condition P applies to the Turbine Trip on Stop Valve Closure. This Condition contains bypass times and Completion l Times that are risk-informed. The Configuration Risk - I Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses the equipment out of service risk monitor, a computer based tool that may be used to aid in the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk of removing equipment from service (continued)

Vogtle Units'1 and 2 B 3.3.1-51

RTS Instrumentation B 3.3.1 BASES

-ACTIONS O.1 and O.2 (continued) o RTB also, if both the Logic test and RTB test are conducted within the 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months time limit. The 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months time limit is justified in Reference 12.

The 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months time limit for the RTS Automatic Trip Logic train testing -

is greater than the 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months time limit for the RTBs, which the Logic train supports. The longer time limit for the Logic train (4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months ) is acceptable based on Reference 13.

R.1 and R.2 Condition R applies to the P-6 interlock. With one or more channels inoperable for one-out-of-two coincidence logic, the associated interlock must be verified to be in its required state for the existing unit condition.within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months or the unit must be placed in MODE 3 within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . Verifying the interlock status manually accomplishes the interlock's Function. The Completion Time of 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months is based on operating experience and the minimum amount of time allowed for manual operator actions.

The Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is reasonable, based on operating experience, to reach MODE 3 from full power in an orderly manner and without challenging unit systems. The 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months Completion Times are equal to the time allowed by

- LCO 3.0.3 for shutdown actions in the event of a complete loss of RTS Function.

S.1 and S.2

- Condition S applies to the P-7, P-8, P-9, P-10, and P-13

' interlocks. With one or more channels inoperable for one-out-of-two or two-out-of-four coincidence logic, the associated interlock must be verified to be in its required state for the existing

. unit condition within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months or THERMAL POWER must be reduced to less than the affected interlock setpoint within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . These actions are conservative for the case where power level is being raised. Verifying the interlock status manually accomplishes the interlock's Function. The Completion Time of 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months is based on operating experience and the minimum amount

' of time allowed for manual operator actions. The Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is reasonable, based on operating experience, to reach MODE 2 from full power in an orderly manner and without

- challenging unit systems.

(continued)

Vogtle' Units 1 and 2. B 3.3.1-53 1

RTS Instrumentation B 3.3.1 BASES ACTIONS T.1 and T.2 -

.(continued)

Condition T applies to the RTBs in MODES 1 and 2. These actions address the train orientation of the RTS for the RTBs.

With one channel inoperable,1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months is allowed to restore the train to OPERABLE status or the unit must be placed in MODE 3 within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . The Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is reasonable, based on operating experience, to reach MODE 3 from full power in an orderly manner and without challenging unit systems. The 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and 6 hour6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months Completion Times are equal to the time allowed by LCO 3.0.3 for shutdown actions in the event of a complete loss of RTS Function. Placing the unit in MODE 3 removes the requirement for this particular Function.

The Required Actions have been modified by three Notes.

Note 1 allows one channel to be bypassed for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months l for surveillance testing, provided the other channel is - l OPERABLE. Note 1 applies to RTB testing that is )

performed independently from the corresponding Logic !

train testing. For simultaneous testing of the Logic and RTBs, the 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months test time limit of Condition Q applies.

Note 2 allows one RTB to be bypassed for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for maintenance on undervoltage or shunt trip mechanisms if the other RTB train is OPERABLE. The 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months time limit is justified in Reference 7. Note 3 applies to RTB testing that is I performed concurrently with the corresponding Logic train testing.

For concurrent testing of the Logic and RTB, the 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months test time limit of Condition O applies.- The 4 hour4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months time limit is justified in Reference 12.

U.1 and U.2 Condition U appiies to the RTB Undervoltage and Shunt Trip

' Mechanisms, or diverse trip features, in MODES 1 and 2. With one of the diverse trip features inoperable, it must be restored to -

an OPERABLE status within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months or the unit must be placed in a MODE where Condition U is no longer applicable. This is accomplished by placing the unit in MODE 3 within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months (54 hours6.25e-4 days 0.015 hours 8.928571e-5 weeks 2.0547e-5 months total time). The Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is a reasonable time, based on operating experience, to reach MODE 3 from full power in an orderly manner and without challenging unit systems. With the unit in MODE 3, Condition C I applies to this trip function.' The affected RTB shall not be i bypassed while one of the diverse features is inoperable except for the time required to perform maintenance to one of the diverse (continued)

Vogtle Units 1 and 2 B 3.3.1' 53a

RTS Instrumentation )

B 3.3.1 BASES ACTIONS ' U.1 and U.2 (continued) features. The allowable time for performing maintenance of the diverse features is 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for the reasons stated under I

' Condition T.

- If two diverse trip features become inoperable in the same RTB, that RTB becomes inoperable upon discovery of the second

- Inoperable trip feature.

The Completion Time of 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months for Required Action U.1 is reasonable considering that in this Condition there is one remaining diverse feature for the affected RTB, and one OPERABLE RTB capable of performing the safety function and given the low probability of an event occurring during this inteival.

11

- Condition V cohesponds to a level of degradation in the RTS that causes a required safety function to be lost. When more than one )

Condition of this LCO is entered, and this results in the loss of automatic reactor trip capability, the unit is in a condition outside the accident analysis.

I I

(continued)

Vogtle Units 1 and 2' S 3.3.1-53b

RTS Instrumentation B 3.3.1 BASES

' REFERENCES 2. SAR, Chapter 6.

(continued)

3. FSAR, Chapter 15.

4. IEEE-279-1971.

5. 10 CFR 50.49. 1 1

6. WCAP-11269, Westinghouse Setpoint Methodology for '

Protection Systems; as supplemented by:

. Amendments 34 (Unit 1) and .14 (Unit 2), RTS Steam Generator Water Level - Low Low, ESFAS Turbine Trip

- and Feedwater Isolation SG Water Level - High High, and ESFAS AFW SG Water Level- Low Low.

Amendment 49 and 49 (Unit 1) and Amendments 27 and 28 (Unit 2), deletion of RTS Power Range Neutron Flux High Negative Rate Trip.

. Amendments 60 (Unit 1) and 39 (Unit 2), RTS Overtemperature AT setpoint revision.

. Amendments 57 (Unit i) and 36 (Unit 2), RTS Overtemperature and Overpower AT time constants and.

Overtemperature AT setpoint.

. Amendments 43 and 44 (Unit 1) and 23 and 24 (Unit 2),

revised Overtemperature and Overpower AT trip setpoints and allowable values.

. Amendments 104 (Unit 1) and 82 (Unit 2), revised RTS Intermediate Range Neutron Flux, Source Range Neutron Flux, and P-6 trip setpoints and allowable J values.

7. WCAP-10271-P-A, Supplement .1, May 1986.

l

8. FSAR, Chapter 16.

9. Westinghouse Letter GP-16696, November 5,1997,

10. WCAP-13632-P-A Revision 1," Elimination of Periodic Sensor Response Time Testing Requirements," January 1996.

11. WCAP-14036-P-A Revision 1," Elimination of Periodic Protection Channel Response Time Tests," October 1998.

12. WCAP-14333-P-A, Rev.1, October 1998. I

13. WCAP-10271-P-A, Supplement 2, Rev.1, June 1990. I 3

3r Vogtle Units 1 and 2 B 3.3.1-65

I ESFAS Instrumentation B 3.3.2 j BASES ACTIONS B.1. B.2.1. and B.2.2

.(continued)

Condition B applies to manualinitiation of:

. - Sl;

. mtainment Spray; and

. Phase A isolation.

1 This action addresses the train orientation of the SSPS for the functions listed above. If a channel is inoperable,48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months is allowed to return it to en OPERABLE status. Note that for containment spray, failure of one oc both channels in one train renders the train Inoperable. Condition B, therefore, encompasses both situations.

Thq specified Completion Time is reasonable considering that there are two automatic actuation trains and another manual initiation train OPERABLE for each Function, and the low probability of an event 1 occurring during this interval. If the channel cannot be restored to OPERABLE status, the unit must be placed in a MODE in which the LCO does not apply, This is done by placing the unit in at least MODE 3 within an additional 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months (54 hours6.25e-4 days 0.015 hours 8.928571e-5 weeks 2.0547e-5 months total time) and in MODE 5 within an acditional 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months (84 hours9.722222e-4 days 0.0233 hours 1.388889e-4 weeks 3.1962e-5 months total time). The allowable Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power conditions in an orderly manner and without challenging unit systems.

C.1. C.2.1. and C.2.2 ,

I Condition C applies to the automatic actuation logic and actuation relays for the following functions:

. Sl; e Containment Spray;

Phase A Isolation; and

. Semi-Automatic Switchover to Containment Sump.

This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk Management Program (CPMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses the equipment out of service risk monitor, a computer based tool that may be used to ri ,

i (con . .ed) I Vogtle Units 1 and 2 B 3.3.2-37

ESFAS Instrumentation B 3.3.2 BASES ACTIONS C.1. C.2.1. and C.2.2 (continued) the risk assessment of on-line maintenance and to evaluate the change in risk from a component railure. The equipment out of service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk of removing equipment from service based on current plant configuration and equipment condition.

This action addresses the train orientation of the SSPS and the master and slave relays. If one channelis inoperable,24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months are allowed to restore the channel to OPERABLE status. The 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months allowed for restoring the inoperable train to OPERABLE status is justified in Reference 12. The specified Completion Time is reasonable considering that there is another channel OPERABLE, and the low probability of an event occurring during this interval. If the channel cannot be restored to OPERABLE status, the unit must be placed in a MODE in which the LCO does not apply. This is done by placing the unit in at least MODE 3 within an additional 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months (30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months total time) and in MODE 5 within an additional 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months (60 hours6.944444e-4 days 0.0167 hours 9.920635e-5 weeks 2.283e-5 months total time). The Completion Times are reasonable, based on operating experience, to reach the required unit ccnditions from full power conditions in an orderly manner and without challenging unit systems.

The Ryuired Actions are modified by a Note that allows one channel to be bypassed for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance testing or maintenance, provided the other train is OPERABLE. This allowance l Is based on the reliability analysis assumption of WCAP-10271-P-A j (Ref. 7) that 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months is the average time required to perform train l surveillance.

D.1. D.2.1. and D.2.2 Condition D applies to:

. Containment Pressure-High 1;

Pressurizer Pressure-Low; e Steam Line Pressure- Low; e Containment Pressure-High 2; (continued)

-Vogtle Units 1 and 2 B 3.3.2-38

ESFAS Instrumentation B 3.3.2 JBASES

( J LACTIONS' D.1. D.2.1. and D.2.2 ' (continued)

. Steam Line Pressure- Negative Rate-High; and

. SG Water level- Low Low.

This Condition contains bypass timet and Completion Times that are risk-informed. The Configuration Risk Management Program (CRMP) 1 is used t<> assess changes in core damage frequency resulting from J applicable plant configurations. The CRMP uses the equipment out of l service risk monitor, a computer based tool that may be used to aid in j the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of ,

service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk of removing equipment from service based on current plant configuration and equipment condition.

If one channel is inoperable,72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months are allowed to restore the l channel to OPERABLE stetus or to place it in the tripped condition. Generally this Cotdition applies to functions that operate on two-out-of-three logic. Theafore, failure of one channel places the Function in a two-out-of-two conf'guration. One channel must be tripped to place the Function in a one-out-of-three configuration that satisfies redundancy requirements. The 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months allowed to restore the channel to OPERABLE status or to place it in the tripped condition is justified in Reference 12.

Failure to restore the inoperable channel to OPERABLE status or place it in the tripped condition within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months requires the unit be l l placed in MODE 3 within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and MODE 4 within the /

next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

The allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power ;

conditions in an orderly manner and without challenging unit systems. 1 In MODE 4, these Functions are no longer required OPERABLE.

1'

~ The Required Actions are modified by a Note that allows placing one channel in bypass for up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months while performing routine

. surveillance testing. The 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months time limit is justified in Reference 12.

. E.1. E.2.1 and E.2 2 Condition E applies to:

(continued)

Vogtle Units 1 and 2- B 3.3.2-39 l

r !

7 ESFAS Instrumentation )

B 3.3.2 BASES ACTIONS - E.1. E.2.1. and E.2.2 (continued)

. Containment Spray Containment Pressure-High 3.

This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses the equipment out of service risk monitor, a computer based tool that may be used to aid in the risk assessment of on-line maintenance and to ovaluate the

- change in risk from a component failure. The equipment out of service r.isk monitor uses the plant probabilistic risk assessment

, 'model to evaluate the risk of removing equipment from service based on current plant configuration and equipment condition.

This signal does not input to a control function. Thus, I two-out-of-three logic is necessary to meet acceptable protective requirements. However, a two-out-of-three design would require tripping a failed channel. This is undesirable because a single failure would then cause spurious containment spray initiation.

Spurious spray actuation is undesirable because of the cleanup

. _ problems presented. -Therefore, these channcis are designed '

witn two-out-of-four logic so that a failed channel may be bypassed rather than tripped. Note that one channel may be bypassed and still satisfy the single failure criterion. Furthermore, with one channel bypassed, a single instrumentation channel failure will not spuriously initiate containment spray.

To avoid the inadvertent actuation of containment spray, the inoperable channel should not be placed in the tripped condition. 1

- Instead it is bypassed. Restoring the cha.1ncl to OPERABLE - !

status, or placing the inoperable channel in the bypass condition within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , is sufficient to assure that the Function remains l OPERABLE and minimizes the time that the Function may be in a partial trip condition (assuming the inoperable channel has failed high). The Completion Time is further justified based on the low probability of an. event occurring during this interval. Failure to restore the inoperable channel to OPERABLE status, or place it in i the bypassed condition within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , requires the unit be placed I in MODE 3 within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and MODE 4 within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .- The allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power conditions in an orderly manner and without challenging unit systems. In MODE 4, this Function is no longer required OPERABLE.

(continued)

Vogtle Units 1 and 2. B 3.3.2-40

E ,

1 4

i:

ESFAS Instrumentation

['y B 3.3.2 BASES E

l ACTIONS - E.1. E.2.1, and E.2.2 (continued)

)

, The Reqdred Actions are modified by a Note that, with one channel inoperable. lows routine surveillance testing of another channel with a channe!in bypass for up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . Placing a second i

channel in the bypass condition for up to.12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months for testing purposes is acceptable based on the results of Reference 12.

F.1. F.2.1. and F.2.2 Condition F applies to:

. Manual Initiation of Steam Line Isolation; and a P-4 Interlock.

L For the Manual Initiation and the P-4 Interlock Functions, this action addresses the train orientation of the SSPS. If a channel is inoperable,48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months is allowed to return it to OPERABLE status. The specified Completion Time is reasonable considering the 4 nature of this Function, the available redundancy, and the low probability of an event occurring during this interval. If the channel cannot be returned to OPERABLE status, the unit must be placed in MODE.3 within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and MODE 4 within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . The allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power in an orderly manner and without challenging unit systems. In ;

... MODE 4, the unit does not have any analyzed transients or conditions that require the explicit use of the protection function noted above.

G.1. G.2.1, and G.2.2 Condition G applies to the automatic actuation logic and actuation relays for the Steam Line Isolation and AFW actuation Functions.

This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from

' applicable plant configurations. The CRMP uses the equipment out of service risk monitor, a computer based tool that may be used to aid in f the risk assessment of on-line maintenance and to evaluate the l; change in risk from a component fai(ure. The equipment out of (continued) <

. Vogtle Units 1 and 2 B 3.3.2-41

ESFAS Instrumentation B 3.3.2 BASES ACTIONS G.1. G.2.1. and G.2.2 (continued) service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk of removing equipment from service based on current plant configuration and equipment condition.

The action addresses the train orientation of the SSPS and the master and slave relays for these functions. If one channelis inoperable, 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months are allowed to restore the channel to OPERABLE status. The 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months allowed for restoring the inoperable train to OPERABLE status is justified in Reference 12.

The Completion Time for restoring a channel to OPERABLE status is reasonable considering that there is another channel OPERABLE, and the low probability of an event occurring during this interval.

If the channel cannot be returned to OPERABLE status, the unit must be brought tc .AODE 3 within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and MODE 4 within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . The allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power conditions in an orderly manner and without challenging unit systems. Placing the unit in MODE 4 removes all requirements for OPERABILITY of the protection channels and actuation functions. In this MODE, the unit does not

. have analyzed transients or conditions that require the explicit use of the protection functions noted above.

1 Ths Required Actions are modified by a Note that allows one l channel to be bypassed for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance testing provided the other train is OPERABLE. This allowance is based on the reliability analysis (Ref. 7) assumption that 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months is the average time required to perform channel surveillance.

H.1 and H.2 Condition H applies to the automatic actuation logic and actuation relays for the Turbine Trip and Feedwater Isolation Function.

This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses the equipment out of service risk monitor, a computer based tool that may be used to aid in (continued)

Vogtle Units 1 and 2 B 3.3.2-42

I ESFAS Instrumentation B 3.3.2 i

BASES-ACTIONS H.1 and H.2 (continued) the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk of removing equipment from service based on current plant configuration and equipment condition. !

This action addresses the train orientation of the SSPS and the master and slave relays for these functions. If one train is inoperable, 1 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months are allowed to restore the train to OPERABLE status or the l unit must be placed in MODE 3 within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . The 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months allowed for restoring the inoperable train to OPERABLE status is justified in Reference 12. The Completion Time for restoring a train I I

to OPERABLE status is reasonable considering that there is another train OPERABLE, and the low probability of an event occurring during this interval. The allowed Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is reasonable, based on operating experience, to reach MODE 3 from full power conditions in an orderly manner and without challenging unit systems.

These Functions are no longer required in MODE 3. Placing the unit in MODE 3 removes all requirements for OPERABILITY of the 3 protection channels and actuation functions. In this MODE, the unit does not have analyzed transients or conditions that require the explicit use of the protection functions noted above.

The Required Actions are mo/fied by a No'e that allows one train to be bypassed for up to 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for surveillance testing or maintenance provided the other train is OPERABLE. This allowance is based on the reliability analysis (Ref. 7) assumption that 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months is the average time required to perform channel surveillances.

l.1 and 1.2 -

Condition I applies to:

)

e SG Water Level- High High (P-14).

This Condition contains bypass times and Completion Times that are risk-informed. The Configuration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from applicable plant configurations. The CRMP uses the equipment out of service risk monitor, a computer based tool that may be used to aid in (continued)

Vogtle Units 1 and 2 B 3.3.2-43_

E i I

ESFAS Instrumentation t B 3.3.2 l

j' BASES l

f ACTIONS l.1 and 1.2 (continued) .

the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of l

j. scrvice risk monitor uses the plant probabilistic risk assessment i l model to evaluate the risk of removing equipment from service based

! on current plant configuration and equipment condition.

if one channel is inoperable,72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months are allowed to restore one l l channel to OPERABLE status or to place it in the tripped condition if i placed in the tripped condition, the Function is then in a partial trip condition where one-out-of-three logic will result in actuation. The 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months allowed to restore one channel to OPERABLE status or to place it in the tripped condition is justified in Reference 12. Failure to restore the inoperable channel to OPERABLE status or place it in the tripped condition within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months requires the unit to be placed in l ,

l L MODE 3 within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . The allowed Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is reasonable, based on operating experience, to reach l MODE 3 from full power conditions in an orderly manner and without i l

challenging unit systems.- In MODE 3, this Function is no longer required OPERABLE.

]

The Required Actions are modified by a Note that allows placing one channel in bypass for up to_12 hours while performing routine surveillance testing. The 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months time limit is justified in Reference 12.

J.1 and J.2 Ccndition J applios to the AFW pump start on trip of all MFW pumps.

This action addresses the train orientation for the auto start function of the AFW System on loss of all MFW pumps. The OPERABILITY of the AFW System must be assured by allowing automatic start of the AFW System pumps. If a channelis inoperable,48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months are allowed to return it to an OPERABLE status. If the function cannot be returned to an OPERABLE status,6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months are allowed to place the unit in MODE 3. The allowed Completion Time of 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months is l reasonable, based on operating experience, to reach MODE 3 from L

- full power conditions M an orderly manner and without challenging unit systems. In MODE 3, the unit does not have any analyzed (continued) l Vogtle Units 1 and.2 - B 3.3.2 44 -

L V

ESFAS Instrumentation B 3.3.2 BASES l ACTIONS J.1 and J.2 (continued) transients or conditions that require the explicit use of the protection function noted above. The allowance of 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months to return the train to an OPERABLE status is justified in Reference 7.

! K.1. K.2.1. and K.2.2 Condition K applies to:

l . RWST Level-Low Low Coincident with Safety injection.

l This Condition contains bypass times and Completion Times that are risk informed. The Configuration Risk Management Program (CRMP) is used to assess changes in core damage frequency resulting from appiicable plant configurations. The CRMP uses the equipment out of l service risk monitor, a computer based tool that may.be used to aid in I

the risk assessment of on-line maintenance and to evaluate the change in risk from a component failure. The equipment out of service risk monitor uses the plant probabilistic risk assessment model to evaluate the risk of removing equipment from service based on current plant configuration and equipment condition.

RWST Level- Low Low Coincident With SI provides actuation of switchover to the containment sump. Note that this Function requires the bistables to energize to perform their required action.

The failure of up to two channels will not prevent the operation of this Function. However, placing a failed channel in the tripped condition could result in a premature switchover to the sump, prior to the injection of the minimum volume from the RWST. Placing the inoperable channel in bypass results in a two-out-of-three logic configuration, which satisfies the requirement to allow another failure without disabling actuation of the switchover when required. '

Restoring the channel to OPERABLE status or placing the inoperable channelin the bypass condition within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months is l sufficient to ensure that the Function remains OPERABLE, and L minimizes the time that the Function may be in a partial trip l condition (assuming the inoperable channel has failed high). The 72 hour8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months Completion Time is justified in Reference 12. If the channel l cannot be returned to OPERABLE status or placed in the bypass condition within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , the unit must be brought to MODE 3 l within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and MODE 5 within the next 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

(continued)

Vogtle Units 1 and 2 B 3.3.2-45

ESFAS Instrumentation B 3.3.2

. BASES ACTIONS K.11 K.2.1. and K.2.2 (continued)

The allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power conditions in an orderly manner and without challenging unit systems. In MODE 5, the unit does not have any analyzed transients or conditions that require the explicit use of the protection functions noted above.

The Required Actions are modified by a Note that allows placing one channel in bypass for up to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months while performing routine surveillance testing. The channel to be tested can be tested in bypass with the inoperable channel also in bypass. The 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months time limit is justified in Reference 12.

4 L.1. L.2.1. and L.2.2 Condition L' applies to the P-11 interlock.

With one or more channels inoperable, the operator must verify that the interlock is in the required state for the existing unit condition.

This action manually accomplishes the function of the interlock.

Determination must be made within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months . The 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months Completion Time is equal to the time allowed by LCO 3.0.3 to initiate shutdown actions in the event of a complete loss of ESFAS function. If the interlock is not in the required state (or placed in the required state) for the existing unit condition, the unit must be placed in MODE 3 within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and MODE 4 within the following 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . The allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power conditions in an orderly manner and without challenging unit systems.

Placing the unit in MODE 4 removes all requirements for

- OPERABILITY of this interlock.

SURVEILLANCE The SRs for each ESFAS Function are identified by the SRs .

REQUIREMENTS column of Table 3.3.2-1. :

A Note has been added to the SR Table to clarify that Table 3.3.2-1 determines which SRs apply to which ESFAS Functions.

Nvte that each channel of process protection supplies both trains of the ESFAS. When testing chai.nel I, train A and train B must be examined. Similarly, train A and train B must be examined when (continued)

Vogtle Units 1 and 2 B 3.3.2-45a

s ESFAS Instrumentation l

B 3.3.2 '

BASES SURVEILLANCE- testing channel 11, channel 111, and channel IV (if applicable). The REQUIREMENTS CHANNEL CAllBRATION and COTS are performed in a manner (continued) - that is consistent with the assumptions used in analytically calculating the required channel accuracies.

SR 3.3.2.1 Performance of the CHANNEL CHECK once every 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months ensures that a gross failure of instrumentation has not occurred.

A CHANNEL CHECK is normally a comparison of the parameter indicated on one channel to a similar parameter on other I

(continued)

Vogtle Units 1 and 2 B 3.3.2-45b

4 ESFAS Instrumentation B 3.3.2 BASES

. REFERENCES-

Amendments 43 and 44 (Unit 1) and 23 and 24 (Unit ,

(continued) 2), revised ESFAS Interlocks Pressurizer P-11 trip setpoint and allowable value.

7. WCAP-10271-P-A, Supplement 2, Rev.1 June 1990.

8. FSAR, Chapter 16.

9. Westinghouse Letter GP-16696, November 5,1997.

I v 10.' WCAP-13632-P-A Revision 2, " Elimination of Pressure Sensor l Response Time Testing Requirements," January 1996. ;

11. WCAP-14036-P-A Revision 1, " Elimination of Periodic Protection Channel Response hme Tests," October 1998. q

12. WCAP-14333-P-A, Rev.1, October 1998.

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S AP MIs S CA C C N 12 3

I Westinghouse Non-Proprietary Class 3 l Ecciosure 6 l 1

i Vogtle Electric Generating Plant I Request to Revise Technical Specifications Reactor Trip System and Engineered Safety Feature Actuation System Completion Times and Bypass Test Times WCAP-14333 Implementation: Tier 2 Requirement.

1 e

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Westinghouse Non-Proprictary Class 3 Enclosure 6 WCAP-14333 Implementation: Tict 2 Requirements t

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Purpose

- Identify Tier 2 requirements for implementing the allowed outage time changes in WCAP-14333.

Background

The NRC issued a SER on WCAP-14333,"Probabilistic Risk Analysis of the RPS and ESFAS Test Times and Completion Times", on July 15,1998. The SER approved the topical report and provided requirements for Licensees on implementation of the changes in this WCAP. One of these requirements is:

. Address Tier 2 and 3 analyses including the CRMP (Configuration Risk Management Program) insights which confirm that these insights are incorporated into their decision making process before taking equipment out of service.

Tier 2 analyses are performed to identify any limitations on equipment unavailability when entering an allowed outage time that is risk-informed, such as thosejustified in WCAP-14333, to preclude potentially high risk configurations. The purpose of these limitations are to ensure that the plant risk does not increase to unacceptable

' levels if multiple components are out of service simultaneously. The licensee needs to identify these equipment unavailability limitations.

Tier 2 Limitations

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. Westinghouse Non-Proprietary Class 3 Enclosure 6 r WCAP-14333 Implem:ntation: Tier 2 Requirements

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