ML21286A317

Amendment 29 to Updated Final Safety Analysis Report, Chapter 4, Table 4.3, Reactor Recirculation System

ML21286A317
Person / Time
Site:	Browns Ferry
Issue date:	10/04/2021
From:	Tennessee Valley Authority
To:	Office of Nuclear Reactor Regulation
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Text

BFN-28 Table 4.3-1 REACTOR RECIRCULATION SYSTEM DESIGN CHARACTERISTICS (3952 MWt)

External Loops Number of Loops............................................................................................................................................... 2 Pipe Sizes (nominal o.d.)

Pump Suction,in.................................................................................................................................. 28 Pump Discharge,in.............................................................................................................................. 28 Discharge Manifold,in........................................................................... 22 (Units 1 & 2), 12 & 22 (Unit 3)

Recirculation Inlet Line,in.................................................................................................................... 12 Equalizer Line,in (Unit 2 only)............................................................................................................. 22 Design Pressure (psig)/Design Temperature(F)

Suction Piping.......................................................................................................................... 1148/562 Discharge Piping...................................................................................................................... 1326/562 Pumps..................................................................................................................................... 1500/575 Operation at 3952 MWt (100% Core Flow)

Recirculation Pump Flow gpm (approximate).............................................................................................................. 47,400 Flow,lb/hr.............................................................................................................................. 17.95 X 106 Total Developed Head,ft................................................................................................................... 643 Suction Pressure (static),psia........................................................................................................ 1,056 Available NPSH*(min.),ft................................................................................................................... 558 Water Temperature (max.),F........................................................................................................... 529 Pump Brake HP (min.),hp.............................................................................................................. 6,734 Flow Velocity at Pump Suction, fps (approximate)........................................................................... 30.5 Variable Frequency Drives (Units 1, 2, and 3) and Power Supply Frequency (operating range),Hz.............................................................................................. 11.5-57.5 Total Required Power to Variable Frequency Drive (Units 1, 2, and 3)

HP/set............................................................................................................................................. 7,194 HP total........................................................................................................................................ 14,388 Jet Pumps Number............................................................................................................................................... 20 Total Jet pump flow,lb/hr....................................................................................................... 102.5 X 106 Throat I.D.,in.................................................................................................................................... 8.18 Diffuser I.D.,in.................................................................................................................................. 19.0 Nozzle I.D.,in. (representative)......................................................................................................... 3.14 Diffuser Exit Velocity,ft/sec............................................................................................................... 15.3

• Includes velocity head.

BFN-28 Table 4.3-1b (Deleted)