Civil Engineering Reference
In-Depth Information
Table 3.1
Design characteristics of the large PWR power plants of Kraftwerk Union and AREVA
[
1
,
4
]
Kraftwerk Union
(KWU-PWR)
AREVA
(EPR)
PWR-1,300
EPR-1,600
Reactor power
Thermal
MW(th)
3,780
4,500
Electrical
MW(e)
1,300
1,600
Plant efficiency
%
32.8
35.6
Number of coolant loops
4
4
Reactor core
Equivalent core diameter
m
3.6
3.77
Active core height
m
3.9
4.2
Specific core power
kW(th)/l
95
96
Density
kW(th)/
kg U
36.5
28.4
Number of fuel elements
193
241
Total amount of fuel (uranium
mass)
kg U
125,000
153,000
Fuel element and control element
Fuel
UO
2
UO
2
U-235 fuel enrichment
- reloading
wt%
3.5-4.5
4-5
Cladding material
Zircaloy-4
Zircaloy-M5
Cladding outer diameter
mm
10.75
9.50
Cladding, thickness
mm
0.725
0.57
Fuel rod spacing
mm
14.3
12.6
Av. specific fuel rod power
W/cm
208
156
Fuel assembly array
16
16
17
17
Control/absorber rods
Absorber material
20 rods inserted in fuel
element
Ag, In, Cd and B
4
C
24 rods inserted in fuel
element
Ag, In, Cd and B
4
C
Number of fuel rods per fuel
element
236
265
Burnable poison
Boric acid
Gd and boric acid
Number of control elements
61
89
Heat transfer system
Primary system
Total coolant flow
Core flow rate
t/s
18.8
21.4
Coolant pressure
MPa
15.8
15.5
C
Coolant inlet temp.
292
295.6
C
Coolant outlet temp.
326
328.2
Steam supply system
Steam pressure
MPa
6.8
7.8
C
Steam temperature
285
293
(continued)
