ML18024A338

Updated Final Safety Analysis Report (Ufsar), Amendment 27, 14.5 Table - Analyses of Abnormal Operational Transients

ML18024A338
Person / Time
Site:	Browns Ferry
Issue date:	10/05/2017
From:	Tennessee Valley Authority
To:	Office of Nuclear Reactor Regulation
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BFN-26 Table 14.5-1 TRANSIENT ANALYSES POWER/FLOW STATE POINTS (100P = 3458 MWt, 100F = 102.5E6 lbm/hr)

TRANSIENT 30P/52F 75P/52F 75P/108F 100P/81F 102P/81F 100P/100F 100P/105F 102P/105F 102P/100F Load Rejection No Bypass X LRNBP/EOC-RPT-OOS X Loss of Condenser Vacuum X Turbine Stop Valve Closure/TT X TSVC/TT-NBP, HP X TSVC/TT-NBP, LP X Closure of All MSIVs X Closure of One MSIV X Loss of Feedwater Heater-REDY X Loss of Feedwater Heater-PANACEA X Inadvertent Pump Start X Pressure Regulator Failure Open X Inadvertent Opening of a Relief Valve X Loss of Feedwater Flow X Loss of Auxiliary Power Transformers X Loss of Auxiliary Power - Grid Connections X Recirculation Flow Control Failure- X Decreasing Flow One Recirculation Pump Trip X Two Recirculation Pumps Trip X (VFD)

One Recirculation Pump Seizure X Recirculation Flow Control Failure- X Increasing Flow Startup of Idle Recirculation Loop X X FW Control Failure-Maximum Demand X X FWCF - EOC-RPT-OOS X FWCF - TBP-OOS X

BFN-26 Table 14.5-2 TRANSIENT ANALYSES INITIAL CONDITIONS (Power Uprate)

Parameter GE UFSAR Analysis Framatome ANP (at percent power) Reload Analysis Thermal Power, MWt 3458 (100%) / 3527 (102%) 3458 (100%)

Core Flow, Mlb/hr 102.5 102.5 Core Flow Range

(% of current rated)81-105 81-105 Vessel Steam Flow and FW flow, Mlb/hr 14.24 (100%) / 14.57 (102%) 14.15 Analysis Dome Pressure, psia 1055 (100%) / 1070 (102%) 1050 Analysis Turbine Pressure, psia 995 (100%) / 1010 (102%) 985 Feedwater Temperature, °F 382 (100%) / 384 (102%) 382 Turbine Bypass Capacity 25.2% of rated vessel steam flow Number of MSRVs 13 13 MSRV type Target Rock Target Rock Opening response of relief functions 0.15 s 0.15 s Opening delay of relief functions 0.4 s 0.45s MSRV Capacity ,% rated steam flow 73.8% i 73.8% i (Based on 1090 psig setpoint) (12 valves) (12 valves)

MSRV Setpoint, 4 @ 1174ii 4 @ 1169ii (number of valves @ psig) 4 @ 1185 4 @ 1179

(+3% setpoint tolerance included) 5 @ 1195 4 @ 1190 MCPR Safety Limit 1.10 Cycle Specific Recirculation Flow Control VFD Flow Control VFD Flow Control Core Average Gap Conductance (Btu/s-sq. ft -Deg F) 0.3972 Case Dependent High Neutron Flux Scram Setpoint 125.4% of rated power 125.4% of rated power High Pressure Scram Setpoint, psig 1106 1101 High Pressure ATWS-RPT setpoint, psig 1153 1177 iii Reactor L8 Water Level, in avz 588 588 iii Reactor L3 Water Level, in avz 518 518 Reactor L2 Water Level, in avziii 448 448 iii Reactor L1 Water Level, in avz 372.5 372.5 i Referenced to rated vessel steam flow at 3458 MWt. The absolute MSRV capacity at 1090 psig does not change with power uprate.

ii Considered only 3 out of 4 due to 1 MSRV-OOS iii Above vessel zero