Environmental Engineering Reference
In-Depth Information
Chapter 9
Emergency and Preventive
Reactor Protection Systems
Yuri Rozen
State Scientiic and Technical Center of Nuclear and Radiation Safety, Ukraine
Svetlana Vinogradska
State Scientiic and Technical Center of Nuclear and Radiation Safety, Ukraine
Alexander Siora
Research and Production Corporation Radiy, Ukraine
ABSTRACT
In Chapter 9, Emergency and Preventive Reactor Protection (E&PRP) systems implemented at the
Ukrainian NPPs during 2003-2013 are considered. The core of E&PRP systems is formed by software-
hardware complexes (SHC E&PRP) developed on the base of the Research and Production Corporation
“Radiy” equipment family. The irst part describes the main purposes of E&PRP: forced power reduction
or immediate reactor shutdown to prevent an emergency from developing into an accident. The second
part describes the basic functions determined by the system purposes, along with additional functions
performed by SHC E&PRP. The third part is devoted to describe SHC E&PRP technical characteristics,
which implement the speciied functions. The forth part deals with information about the composition
and structure of SHC E&PRP, as well as about connections of SHC E&PRP with adjacent I & C systems
are shown. In the ifth part, aspects of functional safety assurance during development, production, and
acceptance of SHC E&PRP are considered.
INTRODUCTION
•
The data storing on provided by the design
operational limits and conditions of the
normal and safe unit operation, ERP and
PRP algorithms of control signal (com-
mands) forming, which initiate the actua-
tion of emergency or preventive reactor
protection accordingly;
SHC E&PRPs used as a technical base in the
reconstruction of existing and creation of new
emergency and preventive reactor protection
systems, perform the following:
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