Civil Engineering Reference
In-Depth Information
Water rod
Water box
Fuel
Partition
Fuel bundle
Control rod
(197)
(424)
Fuel
Bundle
Control
Blade
Large K - Lattice design for control elements
Fig. 3.33
Core configuration, fuel element box and K-lattice design for control element arrange-
ment of ABWR-II [
22
]
3.4.5.2 Active and Passive Safety Systems
Active Emergency Core Cooling Systems
An advanced reactor core isolation cooling system with steam turbine equipped
with a generator has the capacity of long term operation and power supply beyond
battery capacity during a station black out situation. The high pressure coolant
injection system is, therefore, arranged in two trains. The low pressure coolant
injection system and residual heat removal system are operating in four trains. The
emergency power is supplied by two diesel generators and gas turbines.
ABWR-II Passive Heat Removal Systems
In the ABWR-II design the wet well part and the dry well part of the prestressed
inner containment are separated from each other. The passive heat removal system
of ABWR-II consists of
