INSC of Ukraine
HomeIntroductionPartnersSupportLogin

Chornobyl unit #4 

Fuel and cladding

FuelUO2 pellet
CladdingZr/Nb
EnrichmentInitial: 1.8%
Pellet Diameter11.5 mm
Clad Thickness0.9 mm
Pin Outside Diameter13.63 mm
Maximum Clad Temperature350 deg C


Fuel Assemblies

Number of Rods per Assembly18x2


Core Configuration

Active Core Height7 m
Active Core Diameter11.8 m
Average Assembly Discharge Burnup22200 MWd/tU
Average Linear Fuel Rating14.50 kW/m
Peak Linear Fuel Rating30.10 kW/m


Control System

Control Rod MaterialB4C
Control Rod Drive Typeelectric
Number of Coarse Control Rods179 total


Primary Coolant

Coolant MaterialH2O
Pressure70 kg/sq cm
Core Inlet Temperature270 deg C
Core Outlet Temperature284 deg C
Total Mass Flow37500 t/h


Coolant Systems

Number of Loops2
Water Chemistry---


Turbines

Number of Turbines2
Stop Valve Pressure65.9 kg/sq cm
Stop Valve Temperature280.4 deg C


Vessel and Containment

Vessel MaterialZr/2.5%Nb
Height7.0 m
Wall Thickness4.0 mm
Clad Thickness8 mm


Reactor Operations

Fuel Loading42.1 tHM/y
Operational Strategy---


Spent Fuel Management

no information

Last modyfied: 05.03.2001 Please contact the webauthor if any questions