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 first 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 specified 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 fifth part, aspects of functional safety assurance during development, production, and acceptance of SHC E&PRP are considered.
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