Module 06
Module 06
Boiling
Boiling Water
Water Reactors
Reactors
(BWR)
(BWR)
Prof.Dr
Prof.Dr.
. H.
H. B
Bö
öck
ck
Vienna University of Technology / Austria
Vienna University of Technology / Austria
Atominstitute
Atominstitute
Stadionallee
Stadionallee 2,
2,
1020 Vienna, Austria
1020 Vienna, Austria
boeck@ati.ac.at
boeck@ati.ac.at
•
•BWR Basics
BWR Basics
•
•Technical Data
Technical Data
•
•Safety Features
Safety Features
•
•Reactivity Control
Reactivity Control
•
•Fuel Assemblies
Fuel Assemblies
•
•Reactor Pressure Vessel
Reactor Pressure Vessel
•
•Development of
Development of BWR
BWR’
’s
s
•
•SWR
SWR-
-1000
1000
•
•ABWR
ABWR
Contents
Contents
•
•H
H2
2O as coolant
O as coolant and
and moderator
moderator
•
•Pressure in water/ steam cycle: 70 bar (7
Pressure in water/ steam cycle: 70 bar (7 MPa
MPa)
)
•
•Boiling of water in the core
Boiling of water in the core
•
•Temperature about 300
Temperature about 300 º
ºC
C
•
•Steam transferred directly from core to turbine
Steam transferred directly from core to turbine
generator after passing steam/ water separator
generator after passing steam/ water separator
•
•Average
Average power
power density
density in
in core
core: 50
: 50 kW/ litre
kW/ litre
•
•Burn
Burn-
-up
up: ca. 55.000
: ca. 55.000 MWd/ t
MWd/ t U
U
•
•Thermal
Thermal net
net efficiency
efficiency: 34.1%
: 34.1%
BWR Basics
BWR Basics
BWR
BWR Generations
Generations
Example
Example:
: The
The BWR
BWR Kr
Krü
ümmel
mmel
•
•Built
Built
–
–1984
1984
–
–by
by KWU
KWU
•
•1260
1260 MW
MWe
enet
net
•
•3690
3690 MW
MWth
th