Principle Description of Operation
• The system utilizes temperature signals
from six (6) cold inlets (legs) and three (3) pressure signals
of the Reactor Coolant System (RCS).
• The system takes into account the possible
isolation of one or more cooling loops of the RCS.
• The temperature control signal is worked
out by eliminating the aberrant values and selecting the minimal
value of the remaining ones.
• The pressure control signal is calculated
by eliminating the aberrant values and selecting the maximal
value of the remaining values. The control is
implemented by a fault-tolerant control system. It is a state
of the art. Triple - Modular Redundant Architecture. The controller
employs three isolated, parallel control systems and extensive
diagnostics integrated into one system.
• The control system is designed in such
a way that a single failure of a component does not result in
failure of the System to fulfill the safety function.
• The control system is designed to allow
periodical tests and normal maintenance during operation, without
loosing the control and protection.The geographical distrtibution
of the control cabinets protects the system from common mode failure.
The production of the systems go through intensive static and
dynamic testing. A special simulator is designed and produced
for this purpose. The simulator is very useful for on-site testing
during the start-up of the reactor. The displays bellow show some
dynamic testing results
Reference for this product
To the top of the page
home
/ about us / products
/ news / quality assurance
/ download / contact
