Text

Proposed Tech Specs,Updating Versions of LCO 3.0.4 & SR 3.0.4 to Be Consistent with Versions of LCO 3.0.4 & SR 3.0.4 as Appear in Rev 1 to NUREG-1431
	ML20205Q790
Person / Time
Site:	Vogtle
Issue date:	04/13/1999
From:	; SOUTHERN NUCLEAR OPERATING CO.
To:	;
Shared Package
ML20205Q781	List: ML20205Q778; ML20205Q790;
References
	RTR-NUREG-1431 NUDOCS 9904220068
	Download: ML20205Q790 (48)
	v • d • e

Enclosure 2 Vogtie Electric Generating Plant Request to Revisc Technical Specifications Limiting Condition for Operation (LCO) Applicability LCO 3.0.4 Significant fiazards Consideration Evaluation reduction in a margin of safety. Therefore, the proposed changes do not involve a significant hazards consideration as defined in 10 CFR 50.92.

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r II2-3 9904220068 990413 g PDR ADOCK 05000424 P PDR .-

Enclosure 3 Vogtle Electric Generating Plant Request to Hevisc Technical Specifications Limiting Condition for Operation (LCO) Applicability I.CO 3.0.4 Marked up TS and llases Pages

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LCO Applicability 3.0 3.0 LCO APPLICABILITY LCO 3.0.4 operation in the MODE or other specified condition in the (continued) Apolicability for an unlimited period of time. This Specification shall not

<- prevent changes in MODES or other specified conditions in the

/103.0.4 /es1 ss) i.stet Applicabjlity that ar P*rf of M'H*t*q required cpph* cable,

son of totomply thrit. with ACTIONS"" #MA/ #/f-84f/ /et/0 A ME Exceptions to this Specification are stated in the individual Specifications.

Of FS/8CM38d These exceptions allow entry into MODES or other specified conditions in condifie,i /,t fA4 the Applicability when the associated ACTIONS to be entered allow unit App //ctQp///h/sf operation in the MODE or other specified condition in the Applicability only M006J for a limited period of time.

2, 3,4/lc/j W

LCO 3.0.5 Equipment removed from service or declared inoperable to comply with ACTIONS may be returned to service under administrative control solely to perform testing required to demonstrate its OPERABILITY or the OPERABILITY of other equipment. This is an exception to LCO 3.0.2 for the system returned to service under administrative control to perform the testing required to demonstrate OPERABILITY.

LCO 3.0.6 When a supported system LCO is not met solely due to a support system LCO not being met, the Conditions and Required Actions associated with this supported system are not required to be entered. Only the support system LCO ACTIONS are required to be entered. This is an exception to LCO 3.0.2 for the supported system. In this event, additional y evaluations and limitations may be required in accordance with Specification 5.5.15, " Safety Function Determination Program (SFDP)." If i a loss of safety function is determined to exist by this program, the I appropriate Conditions and Required Actions of the LCO in which the loss of safety function exists are required to be entered.

When a support system's Required Action directs a supported system to ,

be declared inoperable or d;rects entry into Conditions and Required l Actions for a supported system, the applicable Conditions and Required Actions shall be entered in accordance with LCO 3.0.2.

(continued)

Vogtle Units 1 and 2 3.0-2 Amendment No. 96 (Unit 1)

Amendment No. 74 (Unit 2)

SR Applicability 3.0 i

3.0 SR APPLICABILITY SR 3.0.3 When the Surveillance is performed within the delay period (continued) and the Surveillance is not met, the LCO must immediately be declared not met, and the applicable Condition (s) must be entered.

SR 3.0.4 Entry into a MODE or other specified condition in the Applicability of an LCO shall not be made unless the LCO's Surveillances have been met within their specified Frequency. This provision shall not prevent entr/

into MODES or other specified conditions in the Applicability that are reguired to complywith ACTIONS

orV4#f AM.prf o/4 phutdowrt af Me wit.

7 FSR 3.0 4 is only applicable. Rvedryinto a' N M0DS or oder sfrecifie/condiftet 14 -h4t.

AfflicebIUIf 4LM00SS I,2, 3,cndq. 3 Vogtle Units 1 and 2 3.0-5 Amendment No. 96 (Unit 1)

Amendment No. 74 (Unit 2)

LCO Applicability B 3.0 BASES LCO 3.0.3 an Applicability of"During movement of irradiated fuel (continued) assemblies in the fuel storage pool." Therefore, this LCO can be applicable in any or all MODES. If the LCO and the Required Actions of LCO 3.7.15 are not met while in MODE 1,2, or 3, there is no safety benefit to be gained by placing the unit in a shutdown condition. The Required Action of LCO 3.7.15 of " Suspend movement of irradiated fuel assemblies in the fuel storage pool"is the appropriate Required Action to complete in lieu of the actions of LCO 3.0.3. These exceptions are addressed in the individual Specifications.

LCO 3.0.4 LCO 3.0.4 establishes limitations on changes in MODES or other specified conditions in the Applicability when an LCO is not met. It '

precludes placing the unit in a MODE or other specified condition stated in that Applicability (e.g., Applicability desired to be entered) when the following exist:

a. Unit conditions are such that the requirements of the LCO would not be met in the Applicability desired to be entered; and

b. Continued noncompliance with the LCO requirements,if the Applicability were entered, would result in the unit being required i to exit the Applicability desired to be entered to comply with the !

Required Actions. !

Compliance with Required Actions that permit continued operation of the unit for an unlimited period of time in a MODE or other specified condition provides an acceptable level of safety for continued operation. This is without regard to the status of the unit before or after the MODE change. Therefore, in such cases, entry into a MODE or other specified condition in the Applicability may be made in accordance with the provisions of the Required Actions. The provisions of this Specification should not be interpreted as endorsing the failure to exercise the good practice of restoring systems or I components to OPERABLE status before d+tip FenleNn on assockhdMoD6 or oHet D speciYed cedH/m in ne. Appficaf,;Jg yj t

(continued)

Vogtle Units 1 and 2 B 3.0-5 Revision No. O

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LCO Applicability I B 3.0 BASES LCO 3.0.4 The provisions of LCO 3.0.4 shall not prevent changes in (continued) MODES or other specified conditions in the Applicability that are required to comply with ACTIONS. In addition, the provisions of LCO 3.0.4 shal1 not prevent changes in MODES or other specified n c ' shutdown.

conditions in the Applicability that result from :t.am3 tanit Exceptions to LCO 3.0.4 are stated in the individual Specifications.

m Exceptions may apply to all the ACTIONS or to a specific Required F/ gggy ppg Action of a Specification.

/ C0 3.#J/ ; Surveillances do not have to be performed on the associated inoperable equipment (or on variables outside the specified limits), as permitted by SR 3.0.1. Therefore, changing MODES or other specified conditions while in an ACTIONS Condition, in compliance with LCO 3.0.4 or where an exception to LCO 3.0.4 is stated, is not a violation of SR 3.0.1 or SR 3.0.4 for those Surveillances that do not have to be performed due to the associated inopvable equipment.

However, SRs must be met to ensure OPERABILIT Y prior to declaring the associated equipment OPERABLE (or variable within limits) and restoring compliance with the affected LCO.

LCO 3.0.5 LCO 3.0.5 establishes the allowance for restoring equipment to service under administrative controls when it has been removed from service or declared inoperable to comply with ACTIONS. The sole

'urpose of this Specification is to provide an exception to LCO 3.0.2 tc.g., to not comply with the applicable Required Action (s)) to allow the performance of SRs to demonstrate:

a. The OPERABILITY of the equipment being returned to service; or

b. The OPERABILITY of other equipment.

The administrative controls ensure the time the equipment is returned to service in conflict with the requirements of the ACTIONS is limited to the time absolutely necessary to perform the allowed SRs. This Specification does not orovide time to perform any other preventive or corrective maintenance.

(continued)

Vogtle Units 1 and 2 B 3.0-6 Revision No. O

a INSERT FOR LCO 3.0.4 LCO 3.0.4 is only applicable for MODE changes when entering MODE 4 from MODE 5, MODE 3 from MODE 4, MODE 2 from MODE 3, or MODE 1 from MODE 2.

Furthermore, LCO 3.0.4 is applicable when entering any other specified condition in the Applicability only while operating in MODES 1,2,3, or 4. The requirements of LCO 3.0.4 do not apply in MODES 5 and 6, or in other specified conditions of the Applicability (unless in MODES 1, 2, 3, or 4) because the ACTIONS of individual Specifications sufficiently define the remedial measures to be taken. In some cases (e.g., LCO 3.1.1) these ACTIONS provide a Note that states "While this LCO is not met, entry into a MODE or other specified condition in the Applicability is not permitted, unless required to comply with ACTIONS." This Note is a requirement explicitly precluding entry into a MODE or other specified condition of the Applicability.

SR Applicability B 3.0 BASES SR 3.0.4 Applicability for which these systems and components ensure (continued) safe operation of the unit. TlJ~ CA:f:_~ . yr.. :_ :' ;~.; ,; '-

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A 3 AN Ul{ The precise requirements for performance of SRs are specified such that exceptions to SR 3.0.4 are not necessary. The specific time frames and conditions necessary for meeting the SRs are specified in the Frequency, in the Surveillance, or both. This allows performance of Surveillances when the prerequisite condition (s) specified in a Surveillance procedure require entry into the MODE or other specified condition in the Applicability of the associated LCO prior to the performance or completion of a Surveillance. A Surveillance that could not be performed until after entering the LCO Applicability, would have its Frequency specified such that it is not "due" until the specific conditions needed are met. Alternately, the Surveillance may be stated in the form of a Note as not required (to be met or performed) until a particular event, condition, or time has been, ggy reached. Further discussion of the specific formats of SRs annotation is found in Section 1.4, Frequency.

$ S*O*Y W$$

1 Vogtle Units 1 and 2 B 3.0-14 Revision No. 0

INSERT 1 FOR SR 3.0.4 BASES The provisions of this Specification should not be interpreted as endorsing the failure to exercise the good practice of restoring systems or ccmponents to OPERABLE status before entering an associated MODE or other specified conditio,1 in the Applicability.

However, in certain circumstances, failing to meet an SR will not result in SR 3.0.4 restricting a MODE change or other specified condition change. When a system, subsystem, division, component, device, or variable is inoperable or outside its specified limits, the associated SR(s)is not required to be performed, per SR 3.0.1, which states that surveillances do not have to be performed on inoperable equipment. When equipment is inoperable, SR 3.0.4 does not apply to the associated SR(s), since the requirement for the SR(s) to be performed is removed. Therefore, failing to per brm the Surveillance (s) within the specified frequency does not result in an SR 3.0.4 restriction to changing MODES or other specified conditions of the Applicability. However, since the LCO is not met in this instance, LCO 3.0.4 will govern any restrictions that may (or may not) apply to MODE or other specified condition changes.

The provisions of SR 3.0.4 shall not prevent changes in MODES or other specified conditions in the Applicability that are required to comply with ACTIONS, in addition, the provisions of LCO 3.0.4 shall not prevent changes in MODES or other specified conditions in the Applicability that result from any unit shutdown.

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INSERT 2 FOR SR 3.0.4 BASES SR 3.0.4 is only applicable for MODE changes when entering MODE 4 from MODE 5, MODE 3 from MODE 4, MODE 2 from MODE 3, or MODE 1 from MODE 2.

Furthermore, SR 3.0.4 is applicable when entering any other specified condition in the Applicability only while operating in MODES 1,2,3, or 4. The requirements of SR 3.0.4 do not apply in MODES 5 and 6, or in other specified conditions of the Applicability (unless in MODES 1,2,3, or 4) because the ACTIONS of individual Specifications sufficiently define the remedial measures to be taken.

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SDM 3.1.1 3.1 REACTIVITY CONTROL SYSTEMS 3.1.1 SHUTDOWN MARGIN (GDM)

LCO 3.1.1 SDM shall be 2 the limit specified in the COLR.

APPLICALILITY: MODES 3,4, and 5.

- ACTIONS r - .

CONDITION REQUIRED ACTION COMPLETION TIME l A. SDM not within limit. A.1 Initiate boration to restore 15 minutes ;

SDM to within limit. i l

SURVEILLANCE REQUIREMENTS SURVElLLANCE FREQUENCY SR 3.1.1.1 Verify SDM is 2 the limit specified in the COLR. 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months NOTE - - - - - - -~

Wkije #1.s LCO is isofmsf fconsiftw lo a. lower MODE ws' Min Me.

N eppitabil,Yy, anolsdry ido Mws S from Mens & is irof fvmHad

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Vogtle Units 1 and 2 3.1.1-1 Amendment No. 96 (Unit 1) I Amendment No. 74 (Unit 2)

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SDM B 3.1.1 l BASES APPLICABLE SDM satisfies Criterion 2 of the NRC Policy Statement. Even SAFETY ANALYSES though it is not directly observed from the control room, l (continued) SDM is considered an initial condition process variable because it is periodically monitored to ensure that the unit is operating within the bounds of accident analysis assumptions.

LCO SDM is a core design condition that can be ensured during operation through control rod positioning (control and shutdown banks) and through the soluble boron concentration.

The MSLB (Ref. 2) and the boron dilution (Ref. 3) accidents are the most limiting analyses that establish the SDM value of the LCO. For MSLB accidents, if the LCO is violated, there is a potential to exceed the DNBR limit and to exceed 10 CFR 100, " Reactor Site Criteria," limits (Ref. 4). For the boron dilution accident, if the LCO is violated, the minimum required time assumed for operator action to terminate dilution may no longer be applicable. The required SDM is specified in the COLR.

APPLICABILITY In MODES 3,4, and 5, the SDM requirements are applicable to provide sufficient negative reactivity to meet the assumptions of the safety analyses discussed above. In MODE 6, the shutdown reactivity i requirements are given in LCO 3.9.1," Boron Concentration." In )

MODES 1 and 2, SDM is ensured by complying with LCO 3.1.5, l

" Shutdown Bank Insertion Limits," and LCO 3.1.6, " Control Bank Insertion Limits."

ACTIONS AJ If the SDM requirements are not met, boration must be initiated promptly. l A Completion Time of 15 minutes is adequate for an operator to correctly align and start the required systems and components. It is assumed that The ACTIOM Mle is ofod/Ded 69 A hk h pahibi b y % ih n h a l lM4ff(p.lC0lrww MobE w/M41ge /jubj7//9 and'erfry jdo Mf06 SNm J,0, Ll glff Gd ido M oot 3 fin pgfjy[fghj o n if a l jgp 3DM gggg regiamewhy gymare gggf $

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(continued)

Vogtle Units 1 and 2 8 3.1.1-4 Revision No. O

RTS Instrumentation 3.3.1 3.3 INSTRUMENTATION 3.3.1 Reactor Trip System (RTS) Instrumentation LCO 3.3.1 The RTS instrumentation for each Function in Table 3.3.1-1 shall be OPERABLE.

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- -NO TC - - - - - -

WHf functiM I,17, IB, WI4 lA l APPLICABILITY: According to Table 3.3.1-1.

%b/g 3,3,f / gefgyeq go jyof iC bli k V T t ._ /! T 4 $ b 6 Y G f --j l 0. f '

ACTIONS

N OTE---------

Separate Condition entry is allowed for fch Function.

CONDITION f REQUIRED ACTIONCOMPLETION TIME !

A. One or more Functions A.1 Enter the Condition immediately with one or more referenced in Table 3.3.1-1 required channels for the channel (s).

Inoperable.

B. One Manual Reactor .1 Restore channel to 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months Trip channel OPERABLE status.

inoperable.

B.2 Be in MODE 3. 54 hours6.25e-4 days 0.015 hours 8.928571e-5 weeks 2.0547e-5 months a

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s C. One channel or train C.1 Restore channel or train to 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months inoperable. OPERABLE status.

C.2 Open RTBs. 49 hours5.671296e-4 days 0.0136 hours 8.101852e-5 weeks 1.86445e-5 months (continued)

Vogtle Units 1 and 2 3.3.1 -1 Amendment No.104 (Unit 1)

Amendment No. 82 (Unit 2)

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

. Manual Reactor Trip; e RTBs-'

($his Cadifiais

/MdM/[/fgg g . RTB Undervoltage and Shunt Trip Mechanisms; and e O[p /M . Automatic Trip Logic.

C Nt < Tdt jg f[g This cction addresses the train orientation of the SSPS for these Functions. With one channel or train inoperable, the inoperable

/N h/f(//MJ 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,

/$ of /9 Of the unit must be placed in a MODE in which the requirement does not apply. To achieve this status, the RTBs must be opened

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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.

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 condition requiring only one-out-of-three logic for actuation. The 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months allowed to place the inoperable channel in the tripped condition is justified in WCAP-10271-P-A (Ref. 7).

In addition to placing the inoperable channel in the tripped condition, THERMAL POWER must be reduced to s 75% RTP within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . Reducing the power level prevents ope'ation of (continued)

Vogtle Units 1 and 2 B 3.3.1-42 Rev.1-3/99

High Flux at Shutdown Alarm 3.3.8 3.3 INSTRUMENTATION l

3.3.8 High Flux at Shutdown Alarm (HFASA)

LCO 3.3.8 Two channels of HFASA shall be OPERABLE.

APPLICABILITY: MODES 3,4, and 5 NOTE --

The HFASA may be blocked in MODE 3 during reactor startup.

/N56flT NOTE Br Conclifiset 4 ACTIONS l CONDITION REQUIRED ACTION COMPLETION TIME 7

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

B. Required Action and B.1 Perform SR 3.1.1.1 (verify 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months associated Completion SDM).

Time of Condition A not AND met. 4 Once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months thereafter O_.B Two channels of HFASA AND inoperable.

B.2 Perform SR 3.9.2.1 (verify 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months unborated water source isolated). AND Once per 14 days thereafter Vogtle Units 1 and 2 3.3.8-1 Amendment No. 96 (Unit 1)

Amendment No. 74 (Unit 2)

1 INSERT FOR CONDITION A

N OT E With one channel of HFASA inoperable, entry into the Applicability and MODE transition within the Applicability is permitted provided that Required Actions B.1 and B.2 and their associated Completion Times are met within the time of entry into the Applicability or the MODE transition, as applicable, j

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HFASA Instrumentation B 3.3.8 BASES APPLICABILITY In MODES 1 and 2, operators are alerted to an unplanned dilution event by a reactor trip on overtemperature delta-T or power l (continued) range neutron flux high, low setpoint, respectively. As a protective measure in addition to HFASA, in MODE 5 with the loops not filled, unplanned dilution events are precluded by requiring the unborated water source (reactor makeup water storage tank (RMWST)) to be isolated.

ACTIONS A.1 With one channel of HFASA inoperable, Required Action A.1 requires the inoperable channel to be restored within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months .

In this condition, one channel of HFASA remains available to provide protection. The 48 hour5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months Completion Time is consistent with that required for an inoperable source range channel. $

/936/27 B.1 and B.2 i

With the Required Action A.1 and associated Completion Time i not met, or with both channels of HFASA inoperable, the I appropriate ACTIONS are to verify that the required SDM is present and isolate the unborated water source by performing SR 3.9.2.1. This places the unit in a condition that precludes an unplanned dilution event. The Completion Times of 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months thereafter for verifying SDM provide timely assurance that no unintended dilution occurred while the HFASA was inoperable and that SDM is maintained. The Completion Times of 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months and once per 14 days thereafter for verifying that the unborated source is isolated provide timely assurance that an unplanned dilution event cannot occur while the HFASA is inoperable and that this protection is maintained until the HFASA is restored.

SURVEILLANCE The HFASA channels are subject to a COT and a CHANNEL REQUIREMENTS CAllBRATION.

(continued)

Vogtle Units 1 and 2 B 3.3.8-2 Rev.1-3/99

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INSERT FOR BASES LCO 3.3.8, REQUIRED ACTION A.1 Condition A is modified by a Note that permits entry into the Applicability and MODE transition within the Applicability while the LCO is not met, provided that Required Actions B.1 and B.2 and their associated Completion Times are met within the time of entry into the Applicability or the MODE transition, as applicable. For example, with one channel of HFASA inoperable, Required Actions B.1 and B.2 would need to be met within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months , respectively, of entry into MODE 3 from MODE 2. Similarly, for a transition from MODE 3 to MODE 4 (or vice versa), the Required Actions B.1 and 8.2 would need to be met within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months after entry into the target MODE.

Since the Required Actions of the LCO ultimately provide for continued operation for an unlimited period of time, LCO 3.0.4 would aljow MODE transition into the Applicability !

and within the Applicability. However, the unit could be in Condition A for up to 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months !

before the compensatory measures of Required Actions B.1 and B.2 would become applicable. Therefore, with one channel of HFASA inoperable, and if MODE transition is desired in this condition, it is prudent that these compensatory measures be ,

implemented without delay. l 4

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RCS Loops - MODE 5, Loops Not Filled 3.4.8 3.4 REACTOR COOLANT SYSTEM (RCS) 3.4.8 RCS Loops-MODE 5, Loops Not Filled LCO 3.4.8 Two residual heat removal (RHR) loops shall be OPERABLE and one RHR loop shall be in operation. Each valve used to isolate unborated water sources shall be secured in the closed position.

NOTES

1. All RHR pumps may be de-energized for s 15 minutes when switching from one loop to another provided:

a. The core outlet temperature is maintained > 10 F below saturation temperature.

b. No operations are permitted that would cause a reduction of the RCS boron concentration; and

c. No draining operations to further reduce the RCS water volume are permitted.

2. One RHR loop may be inoperable for s 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for surveillance testing provided that the other RHR loop is OPERABLE and in operation.

3. Valves in the flowpath from the RMWST, through the chemical mixing tank, to the suction of the charging pumps may be open under administrative control provided the RCS is in compliance with the SHUTDOWN MARGIN requirements of LCO 3.1.1 and the high flux at shutdown alarm is OPERABLE.

APPLICAPILITY: MODE 5 with RCS loops not filled.

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bmiIlp~Ye!f~h.inf5EidCTIwIS ACTIONSJ CONDITION REQUIRED ACTION COMPLETION TIME A. One RHR loop A.1 Initiate action to restore immediately inoperable. RHR loop to OPERABLE status.

(continued)

Vogtle Units 1 and 2 3.4.8-1 Amendment No. 96 (Unit 1)

Amendment No. 74 (Unit 2)

RCS Loops-MODE 5, Loops Not Filled B 3.4.8 BASES LCO Note 3 allows va!ves in the flowpath from the RMWST, through (continued) the chemical mixing tank, to the suction of the charging pumps to be open under administrative control provided the SDM requirements of LCO 3.1.1 are met and the high flux at shutdown alarm is OPERABLE. (OPERABILITY of the high flux at shutdown alarm is defined by LCO 3.3.8.) This permits the addition of chemicals to the RCS as necessary in this MODE of operation while minimizing the risk of an uncontrolled boron dilution transient.

An OPERABLE RHR loop is comprised of an OPERABLE RHR pump

-apable of providing forced flow to an OPERABLE RHR heat

.:xchanger. RHR pumps are OPERABLE if they are capable of being powered and are able to provide flow if required.

APPLICABILITY In MODE 5 with loops not filled, this LCO requires core heat removal and coolant circulation by the RHR System.

Operation in other MODES is covered by:

LCO 3.4.4, "RCS Loops-MODES 1 and 2";

LCO 3.4.5, "RCS Loops-MODE 3";

LCO 3.4.6,"RCS Loops-MODE 4";

LCO 3.4.7, "RCS Loops-MODE 5, Loops Filled";

LCO 3.9.5, " Residual Heat Removal (RHR) and Coolant Circulation-High Water Level"(MODE 6); and LCO 3.9.6, " Residual Heat Removal (RHR) and Coolant Circulation-Low Water Level" (MODE 6).

ACTIONS A.1 If only one RHR loop is OPERABLE and in operation, redundancy for RHR is lost. Action must be initiated to restore a second loop to OPERABLE status. The immediate Completion Time reflects the importance of maintaining the availability of two paths for heat removal.

1 & scnoNS /dbk i.s mod /Sdb L info Mool S uiM He loops he+a A//edud/k Note pfdibi/ingM/

& 2.CO i.S nef nft{

(continued)

Vogtle Units 1 and 2 B 3.4.8-3 Revision No. O

COPS 3.4.12 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One or more safety A.1 Render all safety injection 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months injection pumps capable pumps incapable of of injecting into the RCS. injecting into the RCS.

B. An accumulator not B.1 Isolate affected 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months isolated when the accumulator.

accumulator pressure is greater than or equal to the maximum RCS pressure for existing cold leg temperature allowed in the PTLR.

C. Required Action and C.1 increase RCS cold leg 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months associated Completion temperature to > 350 F.

Time of Condition B not met. OR C.2 Depressurize affected 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months accumulator to less than the maximum RCS pressure for existing cold leg temperature allowed in the PTLR.

D. One required RCS relief D.1 Restore required RCS 7 days valve inoperable in relief valve to OPERABLE MODE 4. status.

(continued)

- - - N 0 76 - -- - - - \

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_ _~- - - - - - - - - - - - - l Vogtle Units 1 and 2 3.4.12-2 Amendment No. 96 (Uniti )

Amendment No. 74 (Unit 2)

I I

COPS B 3.4.12 BASES APPLICABILITY OPERABILITY of the pressurizer safety valves that provide (continued) overpressure protection during MODES 1,2, and 3.

Low temperature overpressure prevention is most critical during shutdown when the RCS is water solid, and a mass or heat input transient can cause a very rapid increase in RCS pressure when little or no time allows operator action to mitigate the event.

The Applicability is modified by a Note stating that accumulator isolation is only required when the accumulator pressure is more than or at the maximum RCS pressure for the existing temperature, as allowed by the P/T limit curves. This Note permits the accumulator discharge isolation valve Surveillance to be performed only under these pressure and temperature conditions.

ACTIONS AJ With one or more safety injection pumps capable of injecting into the RCS, RCS overpressurization is possible.

Rendering the safety injection pumps incapable of injecting into the RCS within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months to restore restricted coolant input capability to the RCS reflects the urgency of removing the RCS from this condition.

B.1, C.1, and C.2 An unisolated accumulator requires isolation within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months . This is only required when the accumulator pressure is at or more than the maximum RCS pressure for the existing temperature allowed by the P/T limit curves.

If isolation is needed and cannot be accomplished in 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months , Required Action C.1 and Required Action C.2 provide two options, either of which must be performed in the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . By increasing the RCS temperature to > 350 F, an accumulator pressure of 678 psig cannot exceed the COPS limits if the accumulators are fully injected. I Depressurizing the accumulators below the COPS limit from the PTLR also gives this protection.

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[ M d[h'/fG'hp d 6 O 3 M , (continued) l Vogtle Units 1 and 2 8 3.4.12-9 Revision No. O I

Boron Concentration 3.9.1 3.9 REFUELING OPERATIONS 3.9.1 Boron Concentration LCO 3.9.1 Boron concentrations of the Reactor Coolant System, the refueling canal, and the refueling cavity shall be maintained within the limit specified in the COLR.

APPLICABILITY: MODE 6.

~

C h lM Iiht 5C Clt5/bl(h ACTIONS

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hee110f'91C 5 W[h en&h/p mod (e ist?!tysrifeg _

CONDITION REQUIRED ACTION COMPLETION TIME A. Boron concentration not A.1 Suspend CORE Immediately within limit. ALTERATIONS.

AND A.2 Suspend positive immediately reactivity additions.

AND A.3 Initiate action to restore immediately boron concentration to within limit.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.9.1.1 Verify boron concentration is within the limit 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months specified in the COLR.

Vogtle Units 1 and 2 3.9.1 -1 Amendment No. 96 (Unit 1) l Amendment No. 74 (Unit 2) ,

l

l Boron Concentration B 3.9.1 BASES APPLICABLE The RCS boron concentration satisfies Criterion 2 of the NRC l SAFETY ANALYSES Policy Statement.

(continued)

LCO The LCO requires that a minimum boron concentration be maintained in all filled portions of the RCS, the refueling canal, and the refueling cavity while in MODE 6. The boron concentration limit specified in the COLR ensures that a core kon of s 0.95 is maintained during fuel handling operations. Violation of the LCO could lead to an inadvertent criticality during MODE 6.

APPLICABILITY This LCO is applicable in MODE 6 to ensure that the fuel in the reactor vessel wl!! remain subcritical. The required boron concentration ensures a kon s 0.95. In MODES 1 and 2, LCO 3.1.4,

" Rod Group Alignment Limits," LCO 3.1.5," Shutdown Bank Insertion Limits," and LCO 3.1.6, " Control Bank Insertion Limits," ensure an adequate amount of negative reactivity is available to shut down the reactor. In MODES 3,4, and 5, LCO 3.1.1, " SHUTDOWN MARGIN" ensures an adequate amount of negative reactivity is available to shut down the reactor.

l ACTIONS A.1 and A.2 Continuation of CORE ALTERATIONS or positive reactivity additions (including actions to reduce boron concentration)is contingent upon maintaining the unit in compliance with the LCO. If the boron concentration of any coolant volume in the filled portions of the RCS, i the refueling canal, or the refueling cavity is less than its limit, all ,

operations involving CORE ALTERATIONS or positive reactivity I additions must be suspended immediately.

Suspension of CORE ALTERATIONS and positive reactivity additions shall not preclude moving a component to a safe position or normal cooldown of the coolant volume for the purpose of system temperature control.

l N T/te f 46k is m&/fildb a Note (4/4His ACf/0Al into M106 G VMt RCS Wm bn h'1 gpecibenk$ of no COLRi.s v+ met. (cont.inued)

Vogtle Units 1 and 2 B 3.9.1-3 Revision No. O l.

1 RHR and Coolant Circulation- Low Water Level l 3.9.6 {

3.9 REFUELING OPERATIONS l l

3.9.6 Residual Heat Removal (RHR) and Coolant Circulation-Low Water Level l LCO 3.9.6 Two RHR loops shall be OPERABLE, and one RHR loop shall be in operation.

APPLICABILITY: MODE 6 with the water level < 23 ft above the top of reactor vessel flange, pCTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. Less than the required A.1 initiate action to restore immediately number of RHR loops required RHR loops to i OPERABLE. OPERABLE status.

l 9R A.2 initiate action to Immediately establish 2 23 ft of water above the top of reactor vessel flange.

B. No RHR loop in operation. B.1 Suspend operations immediately involving a reduction in reactor cociant boron concentration.

AND (continued) i t _ _ _. _ _ _. _ _ _ _ Alo 74 _ __ _ __ _ - - - _ _ - _. -

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i I

Vogtle Units 1 and 2 3.9.6-1 Amendment No. 96 (Unit 1)

Amendment No. 74 (Unit 2)

RHR and Coolant Circulation - Low Water Level l B 3.9.6 BASES LCO Additionally, one loop of RHR must be in operation in order (continued) to provide:

a. Removal of decay heat;

b. Mixing of borated coolant to minimize the possibility of criticality; and

c. Indication of reactor coolant temperature.

An OPERABLE RHR loop consists of an RHR pump, a heat exchanger, valves, piping, instruments and controls to ensure an OPERABLE flow path and to determine the low end temperature. The flow path starts in one of the RCS hot legs and is returned to the RCS cold legs.

1 APPLICABILITY Two RHR loops are required to be OPERABLE, and one RHR loop must be in operation in MODE 6, with the water level < 23 ft above the top of the reactor vessel flange, to provide decay heat removal and mixing of the borated coolant. Requirements for the RHR System in other MODES are covered by LCOs in Section 3.4, Reactor Coolant System (RCS), and Section 3.5, Emergency Core Cooling Systems (ECCS). RHR loop requirements in MODE 6 with the water level 2 23 ft are located in LCO 3.9.5, " Residual Heat Removal (RHR) and Coolant Circulation - High Water Level."

ACTIONS A.1 and A.2 If less than the required number of RHR loops are OPERABLE, action shall be immediately initiated and continued until the RHR loop is restored to OPERABLE status and to operation or until 2 23 ft of water ,

level is established above the reactor vessel flange. When the water level is 2 23 ft above the reactor vessel flange, the Applicability changes to that of LCO 3.9.5, and only one RHR loop is required to be OPERABLE and in operation. An immediate Completion Time is necessary for an operator to initiate corrective actions.

Q 7he. ActnWsie6/e i.rmoo9//ed bya Wde Mpahibih e&y info & Applic4Wi/pMk Mis LC0 is etmd.

(continued)

Vogtle Units 1 and 2 B 3.9.6-2 Revision No. 0

Enclosure 4 Vogtle Electric Generating Plant itequest to Revise Technical Specifications Limiting Condition for Operation (LCO) Applicability LCO 3.0.4 Clean Typed TS and liases Pages I

r E4-1

LCO Applicability 3.0 3.0 LCO APPLICABILilY LCO 3.0.4 operation in the MODE or other specified condition in the (continued) Applicability for an unlimited period of time. This Specification shall not prevent changes in MODES or other specified conditions in the Applicability that are required to comply with ACTIONS or that are part of a shutdown of the unit.

Exceptions to this Specification are stated in the individual Specifications.

These exceptions allow entry into MODES or other specified conditions in the Applicability when the associated ACTIONS to be entered allow unit operation in the MODE or other specified condition in the Applicability only for a limited period of time.

LCO 3.0.4 is only applicable for entry into a MODE or other specified Condition in the Applicability in MODES 1,2,3, and 4.

LCO 3.0.5 Equipment removed from service or declared inoperable to comply with ACTIONS may be returned to service under administrative control solely to perform testing required to demonstrate its OPERABILITY or the OPERABILITY of other equipment. This is an exception to LCO 3.0.2 for the system returned to service under administrative control to perform the testing required to demonstrate OPERABILITY.

LCO 3.0.6 When a supported system LCO is not met solely due to a support system LCO not being met, the Conditions and Required Actions associated with this supported system are not required to be entered. Only the support system LCO ACTIONS are required to be entered. This is an exception to LCO 3.0.2 for the supported system. In this event, additional evaluations and limitations may be required in accordance with Specification 5.5.15, " Safety Function Determination Program (SFDP)." If a loss of safety function is determined to exist by this program, the appropriate Conditions and Required Actions of the LCO in which the loss of safety function exists are required to be entered.

When a support system's Required Action directs a supported system to be declared inoperable or directs entry into Conditions and Required Actions for a supported system, the applicable Conditions and Required Actions shall be entered in accordance with LCO 3.0.2.

(continued)

Vogtle Units 1 and 2 3.0-2 Amendment No. (Unit 1) i Amendment No. (Unit 2)

i SR Applicability 3.0 l

1 3.0 SR APPLICABILITY SR 3.0.3 When the Surveillance is performed within the dele.y period (continued) and the Surveillance is not met, the LCO must immediately be declared not met, and the applicable Condition (s) must be entered.

5 A 3.0.4 Entry into a MODE or other specified condition in the Applicability of an LCO shall not be made unless the LCO's Surveillances have been met within their specified Frequency. This provision shall not prevent entry into MODES or other specified conditions in the Applicability that are required to comply with ACTIONS or that are part of a shutdown of the ;

unit. I 1

SR 3.0.4 is only applicable for entry into a MODE or other specified condition in the /.pplicability in MODES 1,2,3, and 4. ,

i i

l l

Vogtle Units 1 and 2 3.0-5 Amendment No. (Unit 1) )

Amendment No. (Unit 2)

l LCO Applicability B 3.0 BASES LCO 3.0.3 an Applicability of "During movement of irradiated fuel (continued) assemblies in the fuel storage pool." Therefore, this LCO can be applicable in any or all MODES. If the LCO and the Required Actions of LCO 3.7.15 are not met while in MODE 1,2, or 3, there is no safety benefit to be gained by placing the unit in a shuMown condition. The Required Action of LCO 3.7.15 of" Suspend movement ofirradiated fuel assemblies in the fuel storage pool" is the appropriate Required Action to complete in lieu of the actions of LCO 3.0.3. These exceptions are addressed in the individual Specifications.

LCO 3.0.4 LCO 3.0.4 establishes limitations on changes in MODES or other specified conditions in the Applicability when an LCO is not met. It f precludes placing the unit in a MODE or other specified condition stated in that Applicability (e.g., Applicability desired to be entered) when the following exist:

a. Unit conoitions are such that the requirements of the LCO would not be met in the Applicability desired to be entered; and

b. Continued noncompliance with the LCO requirements, if the Applicability were entered, would result in the unit being required to exit the Applicability desired to be entered to comply with the Required Actions.

Compliance with Required Actions that pennit continued operation of the unit for an unlimited period of time in a MODE or other specified 1 condition provides an acceptable level of safety for continued operation. This is without regard to the status of the unit before or after ,

the MODE change. Therefore, in such cases, entry into a MOCZ r '

oths specified condition in the Applicability may be made in accordance with the provisions of the Required Actions. The provisions of this Specification should not be interpreted as endorsing the failure to exercise the good practice of restoring systens or components to OPERABLE status before entering an associated MODE or other specified condition in the Applicability.

]

t a '

(continued)

Vogtle Units 1 and 2 B 3.0-5

LCO Applicability B 3.0 BASES LCO 3.0.4 The provisions of LCO 3.0.4 shall not prevent changes in (continued) MODES or other specified conditions in the Applicability that are required to comply with ACTIONS. In addition, the provisions of LCO 3.0.4 shall not prevent changes in MODES or other specified conditions in the Applicability that result from any unit shutdown. l Exceptions to LCO 3.0.4 are stated in the individual Specifications.

Exceptions may apply to all the ACTIONS or to a specific Required Action of a Specification.

LCO 3.0.4 is only applicable for MODE changes when entering MODE 4 from MODE 5, MODE 3 from MODE 4, MODE 2 from MODE 3, or MODE 1 from MODE 2. Furthermore, LCO 3.0.4 is applicable when entering any other specified condition in the Applicability only while operating in MODES 1,2,3, or 4. The requirements of LCO 3.0.4 do not apply in MODES 5 and 6, or in other specified conditions of the Applicability (unless in MODES 1,2,3, or 4) because the ACTIONS of I in Nidual Specifications sufficiently define the remedial measures to

, :aken. In some cases (e.g., LCO 3.1.1) these ACTIONS provide a ste that states "While this LCO is not met, entry into a MODE or i other specified condition in the Applicability is not permitted, unless required to comply with ACTIONS." This Note is a requirement explicitly precluding entry into a MODE or other specified condition of the Applicability.

Surveillances do not have to be performed on the associated inoperable equipment (or on variables outside the specified limits), as permitted by SR 3.0.1. Therefore, changing MODES or other specified conditions while in an ACTIONS Condition, in compliance with LCO 3.0.4 or where an exception to LCO 3.0.4 is stated, is not a violation of SR 3.0.1 or SR 3.0.4 for those Surveillances that do not have to be performed due to the associated inoperable equipment.

However, SRs must be met to ensure OPERABILITY prior to declaring l the associated equipment OPERABLE (or variable within limits) and '

restoring compliance with the affected LCO.

LCO 3.0.5 LCO 3.0.5 establishes the allowance for restoring equipment to service under administrative controls when it has been removed from service or declared inoperable to comply with ACTIONS. The sole purpose of this Specification is to provide an exception to LCO 3.0.2 (e.g., to not comply with the applicable Required Action (s)) to allow the performance of SRs to demonstrate:

a. The OPERABILITY of the equipment being returned to service; or (continued)

Vogtle Units 1 and 2 B 3.0-6

LCO Applicability B 3.0 BASES '

LCO 3.0.5 b. The OPERABILITY of other equipment.

(continued)

The administrative controls ensure the time the equipment is returned to service in conflict with the requirements of the ACTIONS is limited to the time absolutely necessary to perform the allowed SRs. This Specification does not provide time to perform any other preventive or corrective maintenance.

An example of demonstrating the OPERABILITY of the equipment being returned to service is reopening a containment isolation valve that has been closed to comply with Required Actions and must be reopened to perform the SRs.

An example of demonstrating the OPERABILITY of other equipment is taking an inoperable channel or trip system out of the tripped condition to prevent the trip function from occurring during the performance of an SR on another channel in the other trip system. A similar example of demonstrating the OPERABILITY of other equipment is taking an inoperable channel or trip system out of the tripped condition to permit the logic to function and indicate the appropriate response during the performance of an SR on another channelin the same trip system.

LCO 3.0.6 LCO 3.0.6 establishes an exception to LCO 3.0.2 for support systems that have an LCO specified in the Technical Specifications (TS). This exception is provided because LCO 3.0.2 would require that the Conditions and Required Actions of the associated inoperable supported system LCO be entered solely due to the inoperability of the support system. This exception is justified because the actions tnat are required to ensure the unit is maintained in a safe condition are specified in the support system t.CO's Required Actions. These Required Actions may include entering the supported system's Conditions and Required Actions or may specify other Required Actions.

When a support system is inoperable and there is an LCO specified for it in the TS, the supported system (s) are required to be declared inoperable if determined to be inoperable as a result of the support system inoperability. However, it is not necessary to enter into the supported systems' Conditions and Required Actions unless directed to do so by the support system's Required Actions. The potential confusion and inconsistency of requirements related to the entry into multiple support and supported systems' LCOs' Conditions and Required Actions are eliminated by providing all the actions that are necessary to ensure the unit is maintained in a safe condition in the '

support system's Required Actions.

(continued)

Vogtle Units 1 and 2 8 3.0-7

SR Applicability B 3.0 BASES SR 3.0.4 Applicability for which these systems and components ensure (continued) safe operation of the unit.

The provisions of this Specification should not be interpreted as endorsing the failure to exercise the good practice of restoring systems or components to OPERABLE status before entering an associated MODE or other specified condition in the Applicability.

However, in certain circumstances, failing to meet en SR will not result in SR 3.0.4 restricting a MODE change or other specified condition change. When a system, subsystem, division, component, device, or variable is inoperable or outside its specified limits, the associated SR(s)is not required to be performed, per SR 3.0.1, which states thr' surveillances do not have to be performed on inoperable equipment.

When equipment is inoperable, SR 3.0.4 does not apply to the i associated SR(s), since the requirement for the SR(s) to be performed i is removed. Therefore, failing to perform the Surveillance (s) within the specified Frequency does not result in an SR 3.0.4 restriction to changing MODES or other specified conditions of the Applicability.

However, since the LCO is not met in this instance, LCO 3.0.4 will a govern any restrictions that may (or may not) apply to MODE or other )

specified condition changes.

The provisions of SR 3.0.4 shall not prevent changes in MODES or other specified conditions in the Applicability that are required to comply with ACTIONS. In addition, the provisions of LCO 3 0.4 shall not prevent changes in MODES or other specified conditions in the Applicability that result from any unit shutdown.

The precise requirements for performance of SRs are specified such that exceptions to SR 3.0.4 are not necessary. The specific time frames and conditions necessary for meeting the SRs are specified in the Frequency, in the Surveillance, or both. This allows performance of Surveillances when the prerequisite condition (s) specified in a Surveillance procedure require entry into the MODE or other specified condition in the Applicability of the associated LCO prior to the performance or completion of a Surveillance. A Surveillance that could not be performed until after entering the LCO Applicability, would have its Frequency specified such that it is not "due" until the ;

specific conditions needed are met. Attemately, the Surveillance may be stated in the form of a Note as not required (to be met or performed) until a particular event, condition, or time has been, reached. Further discussion of the specific formats of SRs annotation is found in Section 1.4, Frequency.

(continued)

Vogtle Units 1 and 2 B 3.0-14

SR Applicability B 3.0 BASES SR 3.0.4 (continued) SR 3.0.4 is only applicable for MODE changes when entering MODE 4 from MODE 5, MODE 3 from MODE 4, MODE 2 from MODE 3, or MODE 1 from MODE 2. Furthermore, SR 3.0.4 is applicable when entering any other specified condition in the Applicability only while opoesting in MODES 1,2,3, or 4. The requirements of SR 3.0.4 do not apply in MODES 5 and 6, or in other specified conditions of the Applicability (unless in MODES 1,2,3, or 4) because the ACTIONS of individual Specifications sufficiently define the remedial measures to be taken.

l l

j l

1 i

Vogtle Units 1 and 2 8 3.0-15 Revision No. O

SDM 31.1 3.1 REACTIVITY CONTROL SYSTEMS 3.1.1 SHUTDOWN MARGIN (SDM)

LCO 3.1.1 SDM shall be 2 the limit specified in the COLR, APPLICABILITY: MODES 3,4, and 5.

ACTIONS

-NOTE - --

While this LCO is not met, transition to a lower MODE within the Applicability, and entry into MODE 5 from MODE 6 is not permitted.

1 l

CONDITION REQUIRED ACTION COMPLETION TIME A. SDM not within limit. A.1 Initiate boration to restore 15 minutes SDM to within limit.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.1.1.1 Verify SDM is 2 the limit specified in the CCI.R. 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months Vogtle Units 1 and 2 3.1.1 ' Amendment No. (Unit 1)

Amendment No. (Unit 2)

SDM B 3.'i.1 BASES APPLICABLE SDM satisfies Criterion 2 of the NRC Policy Statement. Even SAFETY ANALYSES though it is not directly observed from the control room, (continued) SDM is considered an initial condition process variable because it is periodically monitored to ensure that the unit is operating within the bounds of accident analysis assumptions.

LCO SDM is a core design condition that can be ensured during operation through control rod positioning (control and shutdown banks) and through the soluble boron concentration.

The MSLB (Ref. 2) and the boron dilution (Ref. 3) accidents are the most limiting analyses that establish the SDM value of the LCO. For MSLB accidents, if the LCO is violated, there is a potential to exceed the DNBR limit and to exceed 10 CFR 100, " Reactor Site Criteria," limits (Ref. 4). For the boron dilution accident, if the LCO is violated, the minimum required time assumed for operator action to terminate dilution may no longer be applicable. The required SDM is specified in the COLR.

APPLICABILITY In MODES 3,4, and 5, the SOM requirements are applicable to provide sufficient negative reactivity to meet the assumptions of the safety analyses discussed above. In MODE 6, the shutdown reactivity requirements are given in LCO 3.9.1, " Boron Concentration." In MODES 1 and 2, SDM is ensured by complying with LCO 3.1.5,

" Shutdown Bank Insertion Limits," and LCO 3.1.6, " Control Bank Insertion Limits."

ACTIONS The ACTIONS table is modified by a Note prohibiting transition to a lower MODE within the Applicability and entry into MODE 5 from MODE 6. LCO 3.0.4 already prohibits entry into MODE 4 from MODE 5 and into MODE 3 from MODE 4 when SDM requirements are not met.

M If the SDM requirements are not met, boration must be initiated promptly.

A Completion Time of 15 minutes is adequate for an operator to correctly align and start the required systems and components. It is assumed that (continued)

Vogtle Units 1 and 2 B 3.1.1-4

RTS Instrum:ntation 3.3.1 3.3 INSTRUMENTATION 3.3.1 Reactor Trip System (RTS) Instrumentation LCO 3.3.1 The RTS instrumentation for each Function in Table 3.3.1-1 shall be OPERABLE.

APPLICABILITY: According to Table 3.3.1-1.

ACTIONS NOTE Separate Condition entry is allowed for each Function.

l 1

CONDITION REQUIRED ACTION COMPLETION TIME A. One or more Functions A.1 Enter the Condition immediately with one or more referenced in Table 3.3.1-1 required channels for the channel (s).

inoperable.

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

2 B.2 Be in MODE 3. 54 hours6.25e-4 days 0.015 hours 8.928571e-5 weeks 2.0547e-5 months C. - NOTE -

C.1 Restore channel or train to 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months With Function 1,17,18, OPERABLE status, or 19 in Table 3.3.1-1 not met, do not close @

the reactor trip breakers. C.2 Open RTBs. 49 hours5.671296e-4 days 0.0136 hours 8.101852e-5 weeks 1.86445e-5 months One channel or train inoperable.

(continued)

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

Amendment No. (Unit 2)

RTS Instrumentation B 3.3.1 BASES ACTIONS C.1 and C.2 (continued) e Manual Reactor Trip; e RTBs; e RTB Undervoltage and Shunt Trip Mechanisms; and e 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 additione! hour provides sufficient time to accomplish the action in an orderly manner, With the RTBs open, these Functions are no longer required. This Condition is modified by a Note that prohibits closing the RTBs if any of the above Functions (Function 1,17,18, or 19 of Table 3.3.1-1) are not met.

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.

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 condition requiring only one-out-of-three logic for actuation. The 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months allowed to place the inoperable channel in the tripped condition is justified in WCAP-10271-P-A (Ref. 7).

in addition to placing the inoperable channel in the tripped condition, THERMAL POWER must be reduced to s; 75% RTP within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . Reducing the power level prevents operation of i

(continued)

Vogtle Units 1 and 2 B 3.3.1-42

High Flux at Shutdown Alarm 3.3.8

'3.3 INSTRUMENTATION 3.3.8 High Flux at Shutdown Alarm (HFASA)

LCO 3.3.8 Two channels of HFASA shall be OPERABLE.

APPLICABILITY: MODES 3,4, a.;d 5 NOTE The HFASA may be blocked in MODE 3 during reactor startup.

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. NOTE A.1 Restore channel to 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months J With one channel of HFASA OPERABLE status.

Inoperable, entry into the Applicability and MODE transition within the Applicability is permitted y provided that Requ! red !

Actions B.1 and B.2 and their associated Completion j Times are met within the time of entry into the Applicability or the MODE transition, as applicable.

One channel of HFASA )

inoperable.

i B. Required Action and B.1 Perform SR 3.1.1.1 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months 4 associated Completion Time (verify SDM).

of Condition A not met. AND 1 Once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months OR thereafter Two channels of HFASA inoperable.

5 Vogtle Units 1 and 2 3.3.8-1 Amendment No. (Unit 1)

Amendment No. (Unit 2)

HFASA Instrumentation B 3.3.8 BASES APPLICABILITY In MODES 1 and 2, the source range instrumentation is (continued) deenergized and operators are alerted to an unplanned dilution event by a reactor trip on overtemperature delta-T or power range neutron flux high, low setpoint, respectively. As a protective measure in addition to HFASA,in MODE 5 with the loops not filled, unplanned dilution events are precluded by requiring the unborated water source (reactor makeup water storage tank (RMWST)) to be isolated.

ACTIONS A.1 With one channel of HFASA inoperable, Required Action A.1 requires the inoperable channel to be restored within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months .

In this condition, one channel of HFASA remains available to provide protection. The 48 hour5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months Completion Time is consistent with that required for an inoperable source range channel.

Condition A is modified by a Note that permits entry into the Applicability and MODE transition within the Applicability while the LCO is not met, provided that Required Actions B.1 and B.2 and their associated Completion Times are met within the time of entry into the Applicability or the MODE transition, as applicable.

For example, with one channel of HFASA inoperable, Required Actions B.1 and B.2 would need to be met within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months , respectively, of entry into MODE 3 from MODE 2.

Similarly, for a transition from MODE 3 to MODE 4 (or vice versa), the Required Actions B.1 and B.2 would need to be met within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months after entry into the target MODE. Since the Required Actions of the LCO ultimately provide for continued operation for an unlimited period of time, LCO 3.0.4 would allow MODE transition into the Applicability and within the Applicability.

However, the unit could be in Condition A for up to 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months before the compensatory measures of Required Actions B.1 and B.2 would become applicable. Therefore, with one channel of HFASA inoperable, and if MODE transition is desired in this condition, it is prudent that these compensatory measures be implemented without delay.

B.1 and B.2 With the Required Action A.1 and associated Completion Time not met, or with both channels of HFASA inoperable, the appropriate ACTIONS are to verify that the required SDM is present and isolate the unborated water source by performing SR 3.9.2.1. This places the unit in a condition that precludes an unplanned dilution event. The Completion Times of 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months thereafter for verifying SDM provide timely (continued)

Vogtle Units 1 and 2 B 3.3.8-2

HFASA Instrumentation B 3.3.8 BASES ACTIONS (continued) assurance that no unintended dilution occurred while the HFASA was inoperable and that SDM is maintained. The Completion Times of 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months and once per 14 days thereafter for verifying that the unborated source is isolated provide timely assurance that an unplanned dilution event cannot occur while the HFASA is inoperable and that this protection is maintained until the HFASA is restored.

SURVEILLANCE The HFASA channels are subject to a COT and a CHANNEL REQUIREMENTS CAllBRATION.

SR 3.3.8.1 SR 3.3.8.1 requires the performance of a COT every 92 days to ensure that each enannel of the HFASA and its setpoint are OPERABLE. This test shallinclude verification that the HFASA setpoint is less than or equal to 2.3 times background. The frequency of 92 days is consistent with the requirements for the source range channels. This Surveillance Requirement is j modified by a Note that provides a 4-hour delay in the requirement to perform this surveillance for the HFASA instrumentation upon entering MODE 3 from MODE 2. This Note allows a normal shutdown to proceed without delay for the performance of the surveillance to meet the applicability requirements in MODE 3.

1 SR 3.3.8.2 SR 3.3.8.2 requires the performance of a CHANNEL CAllBRATION eQery 18 months. This test verifies that each channel responds to a measured parameter within the necessary range and accuracy, it encompasses the HFASA portion of the instrument loop. The frequency is based on operating l experience and consistency with the typical industry refueling j cycle. ;

REFERENCES 1. FSAR, Subsection 15.4.6.

Vogtle Units 1 and 2 B 3.3.8-3

RCS Loops - MODE 5, Loops Not Fill:d 3.4.8 3.4 REACTOR COOLANT SYSTEM (RCS) l 3.4.8 RCS Loops-MODE 5, Loops Not Filled l LCO 3.4.8 Two residual heat removal (RHR) loops shall be OPERABLE and one RHR loop shall be in operation. Each valve used to isolate unborated water sources shall be secured in the closed position. -1 NOTES

1. All RHR pumps may be de-energized for s 15 minutes when I switching from one loop to another provided:

a. The core outlet temperature is maintained > 10 F below saturation temperature.

b. No operations are permitted that would cause a reduction of the RCS boron concentration; and

c. No draining operations to further reduce the RCS water volume are permitted.

2. One RHR Ioop may be inoperable for s 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for surveillance testing provided that the other RHR loop is OPERABLE and in operation.

3. Valves in the flowpath from the RMWST, through the chemical mixing tank, to the suction of the charging pumps may be open under administrative control provided the RCS is in compliance with the SHUTDOWN MARGIN requirements of LCO 3.1.1 and the high flux at shutdown alarm is OPERABLE.

APPLICABILITY: MODE 5 with RCS loops not filled.

(continued)

I Vogtle Units 1 and 2 3.4.8-1 Amendment No. (Unit 1)

Amendment No. (Unit 2) i l

t

RCS Loops - MODE 5, Loops Not Fillsd 3.4.8 ACTIONS (continued)

-NOTE -

While this LCO is not met, entry into MODE 5 with RCS loops not filled is not permitted.

CONDITION REQUIRED ACTION COMPLETION TIME A. One RHR loop A.1 Initiate action to restore immediately inoperable. RHR loop to OPERABLE status.

t B. Required RHR loops B.1 Suspend all operations immediately inoperable. involving reduction in RCS boron concentration.

OB AND No RHR loop in operation. B.2 initiate action to restore immediately one RHR loop to OPERABLE status and to operation.

C. One or more valves C.1 Initiate action to secure immediately used to isolate valve (s) in closed unborated water sources position, not secured in closed position.

SURVEILLANCE REQUIREMENTS , , ,

SURVEILLANCE FREQUENCY SR 3.4.8.1 Verify one RHR loop is in operation. 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months SR 3.4.8.2 Verify correct breaker alignment and indicated 7 days power are available to the required RHR pump that is not in operation.

SR 3.4.8.3 Verify each valve that isolates unborated water 31 days sources is secured in the closed position.

Vogtle Units 1 a. : 2 3.4.8-2 Amendment No. (Unit 1)

Amendment No. (Unit 2)

RCS Loops-MODE 5, Loops Not Filled B 3.4.8 BASES LCO Note 3 allows valves in the flowpath from the RMWST, through (continued) the chemical mixing tank, to the suction of the charging pumps to be open under administrative control provided the SDM requirements of

' CO 3.1.1 are met and the high flux at shutdown alarm is OPERABLE. (OPERABILITY of the high flux at shutdown alarm is defined by LCO 3.3.8.) This permits the addition of chemicals to the RCS as necessary in this MODE of operation while minimizing the risk of an uncontrolled boron dilution transient.

An OPERABLE RHR loop is comprised of an OPERABLE RHR pump capable of providing forced flow to an OPERABLE RHR heat exchanger. RHR pumps are OPERABLE if they are capable of being powered and arc able to provide flow if required.

APPLICABILITY In MODE 5 with loops not filled, this LCO requires core heat removal and coolant circulation by the RHR System.

Operation in other MODES is covered by:

LCO 3.4.4, "RCS Loops-MODES 1 and 2";

LCO 3.4.5, "RCS Loops-MODE 3";

LCO 3.4.6, "RCS Loops-MODE 4";

LCO 3.4.7, "RCS Loops-MODE 5, Loops Filled";

LCO 3.9.5, " Residual Heat Removal (RHR) and Coolant Circulation-High Water Level"(MODE 6); and LCO 3.9.6, " Residual Heat Removal (RHR) and Coolant Circulation-Low Water Leve!" (MODE 6).

ACTIONS The ACTIONS table is modified by a Note prohibiting entry into MODE 5 with the loops not filled while the LCO is not met.

A1 If only one RHR loop is OPERABLE and in operation, redundancy for RHR is lost. Action must be initiated to restore a second loop to OPERABLE status. The immediate Completion Time reflects the importance of maintain!ng the availability of two paths for heat removal.

(continued),

Vogtle Units 1 and 2 B 3.4.8-3 l

COPS 3.4.12 ACTIONS

-- NOTE While this LCO is not met, entry into MODE 6 with the reactor vessel head on from MODE 6, and entry into MODE 5 from MODE 6 with the reactor vessel head on is not permitted.

CONDITION REQUIRED ACTION COMPLETION TIME A. One or more safety A.i Render all safety injection 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months injection pumps capable pumps incapable of of injecting into the RCS. injecting into the RCS.

B. An accumulator not B.1 Isolate affected 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months isolated when the accumulator. ,

accumulator pressure is j greater than or equal to the maximum RCS pressure for existing cold leg temperature allowed in the PTLR. l C. Required Action and C.1 !ncrease RCS cold leg 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months associated Completion temperature to > 350 F.

Time of Condition B not met. QR_

C.2 Depressurize affected 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months accumulator to less than the maximum RCS pressure for existing cold leg temperature allowed in the PTLR.

D. One required RCS relief D.1 Restore required RCS 7 days valve inoperable in relief valve to OPERABLE MODE 4. status.

(continued)

Vogtle Units 1 and 2 3.4.12-2 Amendment No. (Unit 1 )

Amendment No. (Unit 2)

COPS B 3.4.12 BASES APPLICABILITY OPERABILITY of the pressurizer safety valves that provide (continued) overpressure protection during MODES 1,2, and 3.

Low temperature overpressure prevention is most critical during shutdown when the RCS is water solid, and a mass or heat input transient can cause a very rapid increase in RCS pressure when little or no time allows operator action to mitigate the event.

The Applicability is modified by a Note stating that accumulator isolation is only required when the accumulator pressure is more than or at the maximum RCS pressure for the existing temperature, as allowed by the P/T limit curves. This Note permits the accumulator discharge isolation valve Surveillance to be performed only under these pressure and temperature conditions.

ACTIONS The ACTIONS table is modified by a Note that prohibits entry into MODE 6 with the vessel head on from MODE 6 and MODE 5 from MODE 6 with the vessel head on. Entry into MODE 4 from MODE 5 is already prohibited by LCO 3.0.4.

A.]

With one or more safety injection pumps capable of injecting into the RCS, RCS overpressurization is possible.

Rendering the safety injection pumps incapable of injecting into the RCS within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months to restore restricted coolant input capability to the RCS reflects the urgency of removing the RCS from this condition.

B.1. C.1. and C.2 An unisolated accumulator requires isolation within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months . This is only required when the accumulator pressure is at or more than the maximum RCS pressure for the existing temperature allowed by the P/T limit cuntes.

If isolation is needed and cannot be accomplished in 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months , Required Action C.1 and Required Action C.2 provide two options, either of which must be performed in the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . By increasing the RCS temperature to > 350 F, an accumulator pressure of 678 psig cannot exceed the COPS limits if the accumulators are fully injected.

Depressurizing the accumulators below the COPS limit from the PTLR also gives this protection.

(continued)

Vogtle Units 1 and 2 B 3.4.12-9

l Boron Concentration 3.9.1 3.9 REFUELING OPERATIONS 3.9.1 Boron Concentration LCO 3.9.1 Boron concentrations of the Reactor Coolant System, the refueling canal, and the refueling cavity shall be maintained within the limit specified in the j COLR. ;

APPLICABILITY: MODE 6.

ACTIONS NOTE - - -

With the RCS boron concentration specified in the COLR for MODE 6 not met, entry into MODE 6 is not permitted.

l CONDITION REQUIRED ACTION COMPLETION TIME l

l A. Boron concentratian not A.1 Suspend CORE Immediately I within limit. ALTERATIONS.

AND A.2 Suspend positive immediately reactivity additions.

AND A.3 Initiate action to restore immediately boron concentration to within limit.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.9.1.1 Verify boron concentration is within the limit 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months specified in the COLR.

Vogtle Units 1 and 2 3.9.1-1 Amendment No. (Unit 1)

Amendment No. (Unit 2)

Boron Concentration B 3.9.1 BASES l

APPLICABLE The RCS boron concentration satisfies Criterion 2 of the NRC SAFETY ANALYSES Policy Statement. '

(continued)

LCO The LCO requires that a minimum boron concentration be maintained in all filled portions of the RCS, the refueling canal, and the refueling cavity while in MODE 6. The boron concentration simit specified in the COLR ensures that a core km of s 0.95 is maintained during fuel handling operations. Violation of the LCO could lead to an inadvertent criticality during MODE 6.

APPLICABILITY This LCO is applicable in MODE 6 to ensure that the fuel in the reactor vessel will remain subcritical. The required boron concentration ensures a ke s 0.95. In MODES 1 and 2, LCO 3.1.4,

" Rod Group Alignment Limits," LCO 3.1.5, " Shutdown Bank insertion Limits," and LCO 3.1.6, " Control Bank Insertion Limits," ensure an adequate amount of negative reactivity is available to shut down the reactor, in MODES 3,4, and 5, LCO 3.1.1, " SHUTDOWN MARGIN" ensures an adequate amount of negative reactivity is available to shut down the reactor.

ACTIONS The ACTIONS table is modified by a Note prohibiting entry into MODE 6 if the RCS boron concentration specified in the COLR is not met.

A.1 and A.2 Continuation cf CORE ALTERATIONS or positive reactivity additions (including actio% to reduce boron concentration) is contingent upon maintaining the unit in compliance with the LCO. If the boron concentration of any coolant volume in the filled portions of the RCS, the refueling canal, or the refueling cavity is less than its limit, all operations involving CORE ALTERATIONS or positive reactivity additions must be suspended immediately.

Suspension of CORE ALTERATIONS and positive reactivity additions shall not preclude moving a component to a safe position or normal cooldown of the coolant volume for the purpose of system temperature control.

(continued)

Vogtle Units 1 and 2 B 3.9.1-3

RHR and Coolant Circulation - Low Watar Leva 3.9.6 3.9 REFUELING OPERATIONS 3.9.6 Residual Heat Removal (RHR) and Coolant Circulation - Low Water Level LCO 3.9.6 Two RHR loops shall be OPERABLE, and one RHR loop shall be in operation.

APPLICABILITY: MODE 6 with the water level < 23 ft above the top of reactor vessel flange.

ACTIONS i NOTE ------ -

While this LCO is not met, entry into MODE 6 with water level < 23 ft above the top of the reactor vessel flange is not permitted.

I CONDITION REQUIRED ACTION COMPLETION TIME A. Less than the required A.1 initiate action to restore immediately number of RHR loops required RHR loops to ,

OPERABLE. OPERABLE status.

OB A.2 Initiate action to Immediately establish ;t 23 ft of water above the top of reactor vessel flange.

B. No RHR loop in operation. B.1 Suspend operations Immediately involving a reduction in reactor coolant boron concentration.

AND (continued)

Vogtle Units 1 and 2 3.9.6-1 Amend.nent No. (Ur.it 1)

Amendment No. (Unit 2) t . - - _ _

RHR cnd Coolant Circulation - Low Watsr Level B 3.9.6 BASES ,

LCO Additionally, one loop of RHR must be in operation in order (continued) to provide:

a. Removal of decay heat;

b. Mixing of borated coolant to minimize the possibility of criticality; and

c. Indication of reactor coolant temperature.

An OPERABLE RHR loop consists of an RHR pump, a heat exchanger, valves, piping, instruments and controls to ensure an OPERABLE flow path and to determine the low end temperature. The i flow path starts in one of the RCS hot legs and is returned to the RCS {

cold legs.

APPLICABILITY Two RHR loops are required to be OPERABLE, and one RHR loop must be in operation in MODE 6, with the water level < 23 ft above the top of the reactor vessel flange, to provide decay heat removal and mixing of the borated coolant. Requirements for the RHR System in i other MODES are covered by LCOs in Section 3.4, Reactor Coolant .

System (RCS), and Section 3.5, Emergency Core Cooling Systems l (ECCS). RHR loop requirements in MODE 6 with the water level 2 23 ft are located in LCO 3.9.5, " Residual Heat Removal (RHR) and ;

Coolant Circulation - High Water Level." !

l ACTIONS The ACTIONS table is modified by a Note that prohibits entry into the Applicability while this LCO is not met.

A.1 and A.2 If less than the required number of RHR loops are OPERABLE, action shall be immediately initiated and continued until the RHR loop is restored to OPERABLE status and to operation or until 2 23 ft of water level is established above the reactor vessel flange. When the water level is 2 23 ft above the reactor vessel flange, the Applicability changes to that of LCO 3.9.5, and only one RHR loop is required to be OPERABLE and in operation. An immediate Complation Time is necessary for an operator to initiate corrective actions.

(continued)

Vogtle Units 1 and 2 B 3.9.6-2

-

ML20205Q790

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