ML21286A343

Amendment 29 to Updated Final Safety Analysis Report, Chapter 4, Table 4.8, Residual Heat Removal System Equipment Design Data

ML21286A343
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 4.8-1 RESIDUAL HEAT REMOVAL SYSTEM EQUIPMENT DESIGN DATA RHRS PUMPS Number Installed per Unit - 4 Design Temperature - 350F Capacity/Pump - 50% (LPCI) Design pressure - 450 psig Shutoff Head - 780 ft Design Conditions/Pump 0 psid*

Discharge Flow (gpm) 20,000 (2 in one loop) 10,800 (1 in one loop) Units 1, 2, 3 Rated Pump Capacity 10,000 gpm at 560 ft Total Dynamic Head NPSH Required at 90F (ft) 30 Operating Conditions/Pump Discharge Flow (gpm) 0-12,000 Discharge Head (ft) 780-420 Differential Pressure (psid) 295-0 NPSH Required at 90F (ft) 30-34 RHRS HEAT EXCHANGERS Number Installed per Unit - 4 Shell Side Fluid - Reactor Water or Pressure Suppression Pool Water Tube Side Fluid - RHR Service Water (River Water)

Shell and Tube Side Design Pressure - 450 psig and Design Temperature 40-350F Pressure Drop Design Conditions - shell side 10 psi

- tube side 6 psi Suppression Pool Cooling Analysis (3952 MWt) - ANS/ANSI 5.1 (with 2 uncertainty)

DBA LOCA Analysis:

Shell Side Flow (gpm) 6500 Inlet Temperature Shell Side (F) 179.0 Heat Exchanger Duty (Btu/hr) 80,136,000 Tube Side Flow (gpm) 4000 Inlet Temperature Tube Side (F) 95ºF Heat Exchanger K-factor 265 BTU/sec-ºF Limiting NFPA 805 (fire) event Shell Side Flow (gpm) 7500 Inlet Temperature Shell Side (F) 207.7 Heat Exchanger Duty (Btu/hr) 124,966,800 Tube Side Flow (gpm) 4500 Inlet Temperature Tube Side (F) 88.0ºF Heat Exchanger K-factor 290 BTU/sec-ºF

• psid - pounds per square inch difference between reactor vessel and drywell.