TSTF-17-01, Attachment 2, Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests: Difference between revisions

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{{Adams
#REDIRECT [[TSTF-17-01, Attachment 3, TSTF-505 Model Application]]
| number = ML17290B237
| issue date = 09/27/2017
| title = Attachment 2, Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests
| author name =
| author affiliation = BWR Owners Group, Babcock & Wilcox, Combustion Engineering, Inc, PWR Owners Group, Technical Specifications Task Force, Westinghouse Electric Co
| addressee name =
| addressee affiliation = NRC/NRR
| docket = PROJ0753
| license number =
| contact person = Honcharik M
| case reference number = TSTF-17-01
| package number = ML17290B229
| document type = - No Document Type Applies
| page count = 24
| project =
| stage = Request
}}
 
=Text=
{{#Wiki_filter:Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1430, Babcock and Wilcox STS Specification        LCO Requirements and Condition                  Condition on Use 3.3.8.B      LCO: Three channels of loss of voltage Function      Licensee must justify and three channels of degraded voltage Function      that two or more EDG LOPS instrumentation per EDG shall be            channels per EDG OPERABLE.                                            inoperable is not a Condition: One or more Functions with two or        condition in which all more channels per EDG inoperable.                    required trains or subsystems of a TS required system are inoperable or modify the Action to not apply a RICT when all required trains or subsystems are inoperable. See Note 1 at the end of Attachment 2.
3.3.12.B      LCO: Two manual initiation switches per              Licensee must justify actuation channel for each of the following          that one or both emergency feedwater initiation and control (EFIC) channels inoperable is Functions shall be OPERABLE:                        not a condition in
: a. Steam generator (SG) A Main Feedwater (MFW) which all required Isolation,                                          trains or subsystems of
: b. SG B MFW Isolation,                              a TS required system
: c. SG A Main Steam Line Isolation,                  are inoperable or
: d. SG B Main Steam Line Isolation, and              modify the Action to
: e. Emergency Feedwater Actuation.                    not apply a RICT when Condition: One or more EFIC Function(s) with        all required trains or one or both manual initiation switches inoperable in subsystems are both actuation channels.                            inoperable. See Note 1 at the end of Attachment 2.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1430, Babcock and Wilcox STS Specification        LCO Requirements and Condition            Condition on Use 3.4.9.C      LCO: The pressurizer shall be OPERABLE.        Pressurizer is typically Condition: Capacity of pressurizer heaters      not modeled in the
[capable of being powered by emergency power    PRA. Licensee must supply] less than limit.                        justify the ability to calculate a RICT for the condition, including how the system is modeled in the PRA, whether all functions of the system are modeled, and, if a surrogate is used, why that modeling is conservative.
3.5.2.B      LCO: Two ECCS trains shall be OPERABLE.        Licensee must justify Condition: One or more [ECCS] trains inoperable that one or more ECCS for reasons other than one LPI subsystem        trains inoperable is not inoperable.                                    a condition in which all required trains or subsystems of a TS required system are inoperable or modify the Action to not apply a RICT when all required trains or subsystems are inoperable.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1430, Babcock and Wilcox STS Specification          LCO Requirements and Condition              Condition on Use 3.6.2.C      LCO: [Two] containment air lock[s] shall be        Licensee must justify OPERABLE. Condition: One or more                  that an inoperable containment air locks inoperable for reasons other containment air lock is than an inoperable door or inoperable interlock    not a condition in mechanism.                                        which all required trains or subsystems of a TS required system are inoperable. An acceptable argument may be that a note in TS 3.6.2 requires the condition to be assessed in accordance with TS 3.6.1, Containment Integrity, and excessive leakage would require an immediate plant shutdown under that TS.
3.6.6        LCO: Containment Spray and Cooling Systems        Licensee must justify Condition A: One containment spray train          the ability to calculate a inoperable                                        RICT for the condition, Condition C: One [required] containment cooling    including how the train inoperable.                                  system is modeled in Condition D: One containment spray train and one the PRA, whether all
[required] containment cooling train inoperable. functions of the system Condition E: Two [required] containment cooling are modeled, and, if a trains inoperable.                                surrogate is used, why that modeling is conservative.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1430, Babcock and Wilcox STS Specification      LCO Requirements and Condition            Condition on Use 3.7.2.A      LCO: Two MSIVs shall be OPERABLE.            Licensee must justify Condition: One MSIV inoperable in MODE 1. that the condition would not prevent performance of the steam line break isolation function assumed in the accident analysis. An acceptable method may be a second MSIV per steam line, another design feature, or an alternate method of preventing blowdown of more than one steam generator.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1431, Westinghouse STS Specification        LCO Requirements and Condition              Condition on Use 3.3.1.F      LCO: The RTS instrumentation for each Function  Licensee must justify in Table 3.3.1-1 shall be OPERABLE.            that the condition does Condition: One Power Range Neutron Flux - High  not represent the channel inoperable.                            inability to perform the safety function assumed in the FSAR given the loss of spacial distribution of the remaining Power Range detectors. The justification can include that the Actions require periodic monitoring of spacial power distribution and imposition of compensatory limits and reduced power.
3.3.1.DD      LCO: The RTS instrumentation for each Function  The licensee must in Table 3.3.1-1 shall be OPERABLE.            include information Condition: One RTB train inoperable.            regarding how the TSTF-411 conditions and limitations will be implemented (or similar conditions if TSTF-411 has not been adopted), including discussion of ATWS Mitigation System Actuation (AMSAC),
and why those actions are sufficient, including a discussion of defense in depth.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1431, Westinghouse STS Specification        LCO Requirements and Condition                  Condition on Use 3.3.5.B      LCO: [Three] channels per bus of the loss of        Licensee must justify voltage Function and [three] channels per bus of the that two or more degraded voltage Function shall be OPERABLE.        channels per bus Condition: One or more Functions with two or        inoperable is not a more channels per bus inoperable.                    condition in which all required trains or subsystems of a TS required system are inoperable or modify the Action to not apply a RICT when all required trains or subsystems are inoperable. See Note 1 at the end of Attachment 2.
3.3.9.A      LCO: Boron Dilution Protection System (BDPS)        BDPS is typically not Condition: One train inoperable (applicable to      modeled in the PRA.
MODES [2,] 3, 4, and 5.)                            Licensee must justify the ability to calculate a RICT for the condition, including how the system is modeled in the PRA, whether all functions of the system are modeled, and, if a surrogate is used, why that modeling is conservative.
3.4.9.B      LCO: The pressurizer shall be OPERABLE              Pressurizer is typically Condition: One [required] group of pressurizer      not modeled in the heaters inoperable.                                  PRA. Licensee must justify the ability to calculate a RICT for the condition, including how the system is modeled in the PRA, whether all functions of the system are modeled, and, if a surrogate is used, why that modeling is conservative.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1431, Westinghouse STS Specification          LCO Requirements and Condition              Condition on Use 3.5.2.A      LCO: Two ECCS trains shall be OPERABLE.            Licensee must justify Condition: One or more [ECCS] trains inoperable. that one or more ECCS trains inoperable is not a condition in which all required trains or subsystems of a TS required system are inoperable. Acceptable justification is TS Condition requiring 100% flow equivalent to a single ECCS train.
3.6.2.C      LCO: [Two] containment air lock[s] shall be        Licensee must justify OPERABLE. Condition: One or more                  that an inoperable containment air locks inoperable for reasons other containment air lock is than an inoperable door or inoperable interlock    not a condition in mechanism.                                        which all required trains or subsystems of a TS required system are inoperable. An acceptable argument may be that a note in TS 3.6.2 requires the condition to be assessed in accordance with TS 3.6.1, Containment Integrity, and excessive leakage would require an immediate plant shutdown under that TS.
3.6.6A        LCO: Containment Spray and Cooling Systems        Licensee must justify (Atmospheric and Dual) (Credit taken for iodine    the ability to calculate a removal by the Containment Spray System)          RICT for the condition, Condition A: One containment spray train          including how the inoperable.                                        system is modeled in Condition C: One [required] containment cooling    the PRA, whether all train inoperable.                                  functions of the system Condition D: Two [required] containment cooling are modeled, and, if a trains inoperable.                                surrogate is used, why that modeling is conservative.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1431, Westinghouse STS Specification          LCO Requirements and Condition              Condition on Use 3.6.6B        LCO: Containment Spray and Cooling Systems        Licensee must justify (Atmospheric and Dual (Credit not taken for iodine the ability to calculate a removal by the Containment Spray System)          RICT for the condition, Condition A: One containment spray train          including how the inoperable.                                        system is modeled in Condition B: One [required] containment cooling    the PRA, whether all train inoperable.                                  functions of the system Condition C: Two containment spray trains          are modeled, and, if a inoperable.                                        surrogate is used, why Condition D: One containment spray train and one  that modeling is
[required] containment cooling train inoperable. conservative.
Condition E: Two [required] containment cooling trains inoperable.
3.6.6C.A      LCO: Containment Spray System (Ice Condenser)      Licensee must justify Condition: One containment spray train            the ability to calculate a inoperable.                                        RICT for the condition, including how the system is modeled in the PRA, whether all functions of the system are modeled, and, if a surrogate is used, why that modeling is conservative.
3.6.6D.A      LCO: Quench Spray (QS) System                      Licensee must justify (Subatmospheric)                                  the ability to calculate a Condition: One QS train inoperable                RICT for the condition, including how the system is modeled in the PRA, whether all functions of the system are modeled, and, if a surrogate is used, why that modeling is conservative.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1431, Westinghouse STS Specification        LCO Requirements and Condition              Condition on Use 3.6.6E        LCO: Recirculation Spray (RS) System            Licensee must justify (Subatmospheric)                                the ability to calculate a Condition A: One RS subsystem inoperable.        RICT for the condition, Condition B: Two RS subsystems inoperable in    including how the one train.                                      system is modeled in Condition C: Two inside RS subsystems            the PRA, whether all inoperable                                      functions of the system Condition D: Two outside RS subsystems          are modeled, and, if a inoperable.                                      surrogate is used, why Condition E: Casing cooling tank inoperable. that modeling is conservative.
3.6.16.A      LCO: The ice condenser inlet doors, intermediate Licensee must justify deck doors, and top deck [doors] shall be        that one or more OPERABLE and closed.                            inoperable doors is not Condition: One or more ice condenser doors      a condition in which all physically restrained from opening              required trains or subsystems of a TS required system are inoperable or modify the Action to not apply a RICT when all required trains or subsystems are inoperable. See Note 1 at the end of Attachment 2.
3.7.2.A      LCO: [Four] MSIVs shall be OPERABLE.            Licensee must justify Condition: One MSIV inoperable in MODE 1.        that the condition would not prevent performance of the steam line break isolation function assumed in the accident analysis. An acceptable method may be a second MSIV per steam line, another design feature, or an alternate method of preventing blowdown of more than one steam generator.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1431, Westinghouse STS Specification        LCO Requirements and Condition              Condition on Use 3.7.4.B      LCO: [Three] Atmospheric Dump Valves (ADV)      Licensee must justify lines shall be OPERABLE.                        that two or more Condition: Two or more required ADV lines        inoperable ADVs is not inoperable                                      a condition in which all required trains or subsystems of a TS required system are inoperable or modify the Action to not apply a RICT when all required trains or subsystems are inoperable. See Note 1 at the end of Attachment 2.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1432, Combustion Engineering STS Specification        LCO Requirements and Condition              Condition on Use 3.3.6.C        LCO: [Four] channels of Loss of Voltage Function Licensee must justify (analog)      and [four] channels of Degraded Voltage Function that more than two auto-initiation instrumentation per DG shall be  channels per bus OPERABLE.                                        inoperable is not a Condition: One or more Functions with more than condition in which all two channels inoperable.                        required trains or subsystems of a TS required system are inoperable or modify the Action to not apply a RICT when all required trains or subsystems are inoperable. See Note 1 at the end of Attachment 2.
3.4.9.B        LCO: The pressurizer shall be OPERABLE          Pressurizer is typically Condition: One [required] group of pressurizer  not modeled in the heaters inoperable.                              PRA. Licensee must justify the ability to calculate a RICT for the condition, including how the system is modeled in the PRA, whether all functions of the system are modeled, and, if a surrogate is used, why that modeling is conservative.
3.5.2.B        LCO: Two ECCS trains shall be OPERABLE.          Licensee must justify Condition: Less than 100% of the ECCS flow      that one or more ECCS equivalent to a single OPERABLE train available. trains inoperable is not a condition in which all required trains or subsystems of a TS required system are inoperable. Acceptable justification is TS Condition requiring 100% flow equivalent to a single ECCS train.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1432, Combustion Engineering STS Specification        LCO Requirements and Condition                Condition on Use 3.6.2.C      LCO: [Two] containment air lock[s] shall be        Licensee must justify OPERABLE. Condition: One or more                  that an inoperable containment air locks inoperable for reasons other containment air lock is than an inoperable door or inoperable interlock    not a condition in mechanism.                                        which all required trains or subsystems of a TS required system are inoperable. An acceptable argument may be that a note in TS 3.6.2 requires the condition to be assessed in accordance with TS 3.6.1, Containment Integrity, and excessive leakage would require an immediate plant shutdown under that TS.
3.6.6A        LCO: Containment Spray and Cooling Systems        Licensee must justify (Atmospheric and Dual) (Credit taken for iodine    the ability to calculate a removal by the Containment Spray System)          RICT for the condition, Condition A: One containment spray train          including how the inoperable.                                        system is modeled in Condition C: One containment cooling train        the PRA, whether all inoperable.                                        functions of the system Condition D: One containment spray and one        are modeled, and, if a containment cooling train inoperable.              surrogate is used, why Condition E: Two containment cooling trains        that modeling is inoperable.                                        conservative.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1432, Combustion Engineering STS Specification        LCO Requirements and Condition              Condition on Use 3.6.6B        LCO: Containment Spray and Cooling Systems      Licensee must justify (Atmospheric and Dual) (Credit not taken for    the ability to calculate a iodine removal by the Containment Spray System) RICT for the condition, Condition A: One containment spray train        including how the inoperable.                                      system is modeled in Condition B: One containment cooling train      the PRA, whether all inoperable.                                      functions of the system Condition C: Two containment spray trains        are modeled, and, if a inoperable.                                      surrogate is used, why Condition D: One containment spray train and one that modeling is containment cooling train inoperable.            conservative.
Condition E: Two containment cooling trains inoperable.
3.7.2.A      LCO: [Two] MSIVs shall be OPERABLE.              Licensee must justify Condition: One MSIV inoperable in MODE 1.        that the condition would not prevent performance of the steam line break isolation function assumed in the accident analysis. An acceptable method may be a second MSIV per steam line, another design feature, or an alternate method of preventing blowdown of more than one steam generator.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1433, BWR/4 STS Specification        LCO Requirements and Condition                Condition on Use 3.3.1.2.A    LCO: The SRM instrumentation in Table 3.3.1.2-1    Licensee must justify shall be OPERABLE.                                  that one or more Condition: One or more required SRMs                inoperable SRMs is not inoperable in MODE 2 with intermediate range        a condition in which all monitors (IRMs) on Range 2 or below                required trains or subsystems of a TS required system are inoperable or modify the Action to not apply a RICT when all required trains or subsystems are inoperable. See Note 1 at the end of Attachment 2.
Licensee must justify the ability to calculate a RICT for the condition, including how the system is modeled in the PRA, whether all functions of the system are modeled, and, if a surrogate is used, why that modeling is conservative.
3.3.2.2.B    LCO: [Three] channels of feedwater and main        Licensee must justify turbine high water level trip instrumentation shall that two or more be OPERABLE.                                        inoperable trip Condition: Two or more feedwater and main          channels is not a turbine high water level trip channels inoperable. condition in which all required trains or subsystems of a TS required system are inoperable or modify the Action to not apply a RICT when all required trains or subsystems are inoperable. See Note 1 at the end of Attachment 2.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1433, BWR/4 STS Specification        LCO Requirements and Condition            Condition on Use 3.3.4.1.A    LCO: End of Cycle Recirculation Pump Trip      Licensee must justify (EOC-RPT) Instrumentation                      that one or more Condition: One or more required channels      inoperable EOC-RPT inoperable.                                    channels is not a condition in which all required trains or subsystems of a TS required system are inoperable or modify the Action to not apply a RICT when all required trains or subsystems are inoperable. See Note 1 at the end of Attachment 2.
Licensee must justify the ability to calculate a RICT given that EOC-RPT channels are not typically modeled in the PRA.
3.3.6.3.A    LCO: Low-Low Set (LLS) Instrumentation        Licensee must justify Condition: One LLS valve inoperable due to    the ability to calculate a inoperable channel(s).                        RICT for the condition, including how the system is modeled in the PRA, whether all functions of the system are modeled, and, if a surrogate is used, why that modeling is conservative.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1433, BWR/4 STS Specification        LCO Requirements and Condition                Condition on Use 3.3.8.1.A    LCO: The LOP instrumentation for each Function    Licensee must justify in Table 3.3.8.1-1 shall be OPERABLE.              that one or more Condition: One or more channels inoperable.        channels inoperable is not a condition in which all required trains or subsystems of a TS required system are inoperable or modify the Action to not apply a RICT when all required trains or subsystems are inoperable. See Note 1 at the end of Attachment 2.
3.6.1.2.C    LCO: The primary containment air lock shall be    Licensee must justify OPERABLE. Condition: Primary containment air that an inoperable lock inoperable for reasons other than Condition A containment air lock is or B.                                              not a condition in which all required trains or subsystems of a TS required system are inoperable. An acceptable argument may be that a note in TS 3.6.1.2 requires the condition to be assessed in accordance with TS 3.6.1.1, Primary Containment, and excessive leakage would require an immediate plant shutdown under that TS.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1433, BWR/4 STS Specification        LCO Requirements and Condition              Condition on Use 3.6.1.3.E    LCO: Each PCIV, except reactor building-to-      Licensee must justify suppression chamber vacuum breakers, shall be    that PCIV leakage in OPERABLE.                                        excess of the limits is Condition: One or more penetration flow paths    not a condition in with one or more containment purge valves not    which all required within purge valve leakage limits.              trains or subsystems of a TS required system are inoperable.
Licensee must justify the ability to calculate a RICT for this inoperability.
3.6.1.7.D    LCO: Each reactor building-to-suppression        Licensee must justify chamber vacuum breaker shall be OPERABLE.        that one or more Condition: Two or more lines with one or more    inoperable vacuum reactor building -to-suppression chamber vacuum  breakers on two or breakers inoperable for opening.                more lines is not a condition in which all required trains or subsystems of a TS required system are inoperable or modify the Action to not apply a RICT when all required trains or subsystems are inoperable. See Note 1 at the end of Attachment 2.
3.7.7.A      LCO: The Main Turbine Bypass System shall be    Licensee must justify OPERABLE.                                        the ability to calculate a OR                                              RICT for the condition, The following limits are made applicable:        including how the
[ a. LCO 3.2.1, "AVERAGE PLANAR LINEAR          system is modeled in HEAT GENERATION RATE (APLHGR)," limits          the PRA, whether all for an inoperable Main Turbine Bypass System, as functions of the system specified in the [COLR]; and ]                  are modeled, and, if a
[ b. LCO 3.2.2, "MINIMUM CRITICAL POWER          surrogate is used, why RATIO (MCPR)," limits for an inoperable Main    that modeling is Turbine Bypass System, as specified in the      conservative.
[COLR]. ]
Condition: [Requirements of the LCO not met or Main Turbine Bypass System inoperable].
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1434, BWR/6 STS Specification        LCO Requirements and Condition            Condition on Use 3.3.1.2.A    LCO: The SRM instrumentation in Table 3.3.1.2-1 Licensee must justify shall be OPERABLE.                              that one or more Condition: One or more required SRMs            inoperable SRMs is not inoperable in MODE 2 with intermediate range    a condition in which all monitors (IRMs) on Range 2 or below.            required trains or subsystems of a TS required system are inoperable or modify the Action to not apply a RICT when all required trains or subsystems are inoperable. See Note 1 at the end of Attachment 2.
Licensee must justify the ability to calculate a RICT given that SRMs are not typically modeled in the PRA.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1434, BWR/6 STS Specification        LCO Requirements and Condition              Condition on Use 3.3.4.1.A    LCO: End of Cycle Recirculation Pump Trip      Licensee must justify (EOC-RPT) Instrumentation                      that one or more Condition: One or more required channels        inoperable channels is inoperable.                                    not a condition in which all required trains or subsystems of a TS required system are inoperable or modify the Action to not apply a RICT when all required trains or subsystems are inoperable. See Note 1 at the end of Attachment 2.
Licensee must justify the ability to calculate a RICT for the condition, including how the system is modeled in the PRA, whether all functions of the system are modeled, and, if a surrogate is used, why that modeling is conservative.
3.3.6.5.A    LCO: Relief and Low-Low Set (LLS)              Licensee must justify Instrumentation                                the ability to calculate a Condition: One trip system inoperable.          RICT for the condition, including how the system is modeled in the PRA, whether all functions of the system are modeled, and, if a surrogate is used, why that modeling is conservative.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1434, BWR/6 STS Specification        LCO Requirements and Condition                Condition on Use 3.3.8.1.A    LCO: The LOP instrumentation for each Function    Licensee must justify in Table 3.3.8.1-1 shall be OPERABLE.              that one or more Condition: One or more channels inoperable.        channels inoperable is not a condition in which all required trains or subsystems of a TS required system are inoperable or modify the Action to not apply a RICT when all required trains or subsystems are inoperable. See Note 1 at the end of Attachment 2.
3.6.1.2.C    LCO: The primary containment air lock shall be    Licensee must justify OPERABLE. Condition: Primary containment air that an inoperable lock inoperable for reasons other than Condition A containment air lock is or B.                                              not a condition in which all required trains or subsystems of a TS required system are inoperable. An acceptable argument may be that a note in TS 3.6.1.2 requires the condition to be assessed in accordance with TS 3.6.1.1, Primary Containment, and any loss of function would require an immediate plant shutdown under that TS.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1434, BWR/6 STS Specification        LCO Requirements and Condition            Condition on Use 3.6.1.3.E    LCO: Each PCIV shall be OPERABLE.              Licensee must justify Condition: One or more penetration flow paths  that PCIV leakage in with one or more containment purge valves not  excess of the limits is within purge valve leakage limits.            not a condition in which all required trains or subsystems of a TS required system are inoperable.
Licensee must justify the ability to calculate a RICT for the condition, including how the system is modeled in the PRA, whether all functions of the system are modeled, and, if a surrogate is used, why that modeling is conservative.
3.6.1.7.A    LCO: Residual Heat Removal (RHR) Containment  Licensee must justify Spray System                                  the ability to calculate a Condition: One RHR containment spray          RICT for the condition, subsystem inoperable.                          including how the system is modeled in the PRA, whether all functions of the system are modeled, and, if a surrogate is used, why that modeling is conservative.
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests NUREG-1434, BWR/6 STS Specification        LCO Requirements and Condition                Condition on Use 3.6.5.2.C    LCO: The drywell air lock shall be OPERABLE.      Licensee must justify Condition: Drywell air lock inoperable for reasons that an inoperable other than Condition A or B.                      drywell air lock is not a condition in which all required trains or subsystems of a TS required system are inoperable. An acceptable argument may be that a note in TS 3.6.5.2 requires the condition to be assessed in accordance with TS 3.6.1.1, Primary Containment, and excessive leakage would require an immediate plant shutdown under that TS.
3.7.6.A      LCO: The Main Turbine Bypass System shall be      Licensee must justify OPERABLE.                                          the ability to calculate a OR                                                RICT for the condition, The following limits are made applicable:          including how the
[ a. LCO 3.2.1, "AVERAGE PLANAR LINEAR            system is modeled in HEAT GENERATION RATE (APLHGR)," limits            the PRA, whether all for an inoperable Main Turbine Bypass System, as  functions of the system specified in the [COLR] and ]                      are modeled, and, if a
[ b. LCO 3.2.2, "MINIMUM CRITICAL POWER            surrogate is used, why RATIO (MCPR)," limits for an inoperable Main      that modeling is Turbine Bypass System, as specified in the        conservative.
[COLR]. ]
Condition: [Requirements of the LCO not met or Main Turbine Bypass System inoperable].
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Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests Note 1 Some Conditions are applicable when an unspecified number of subsystems or instrument channels are inoperable, typically written as "One or more" or "Two or more". These conditions currently apply when all subsystems or channels required to be operable to perform a function are inoperable, and application of a RICT in this situation is prohibited in the near-term TSTF-505 submittals.
To address this, it is recommended that the following modification to TSTF-505 be made to the Required Actions indicated in the Attachment 2 tables for Completion Times potentially applicable when all required subsystems or channels are inoperable.
The typical Completion Time is modified by TSTF-505 to state:
72 hours (i.e., the existing Completion Time)
OR In accordance with the Risk Informed Completion Time Program It is recommended that the second Completion Time be modified with a Note, as shown below:
72 hours (i.e., the existing Completion Time)
OR
        -------------NOTE-------------
Not applicable when
[all/two/four/both, etc.] required
[channels/subsystems/trains, etc.] are inoperable.
        ---------------------------------
In accordance with the Risk Informed Completion Time Program The bracketed number of channels will depend on the specification. This approach retains the existing requirements and limits the use of a RICT to conditions in which the function can still be performed.
The licensee must justify that the required function can still be performed absent an additional failure when a RICT is applied. The TS Bases should be revised to describe the Note and the selection of the minimum number of channels needed to perform the function.
Alternatively, the licensee may modify the Condition to only apply when at least one subsystem or channel is operable, but this approach may require creating a new Condition or modifying an existing Page 39
 
Attachment 2 Conditional Variations from TSTF-505-A in Near-Term Plant-Specific License Amendment Requests condition to retain the current requirements, or accepting a more restrictive requirement (such a LCO 3.0.3 entry).
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