Environmental Engineering Reference
In-Depth Information
Chapter 5
Software of Safety
Important I&C Systems
Vyacheslav Kharchenko
National Aerospace University named after N.E. Zhukovsky KhAI & Centre for Safety Infrastructure-
Oriented Research and Analysis, Ukraine
Vladimir Sklyar
Research and Production Corporation Radiy, Ukraine
Andriy Volkoviy
Samsung Electronics Ukraine Company LLC, R&D Center, Ukraine
ABSTRACT
Features of software as a component of Instrumentation and Control (I&C) systems are analyzed.
Attention is paid to the importance of functions performed by software and hazards of such software.
Requirements for characteristics of software as a component of I&C systems are analyzed. Diferent
regulatory documents are considered in order to disclose common approaches to the use of dedicated
software and of-the-shelf software components. Classiication of software, as well as classiication of
requirements, is described. Criteria of selection and structuring of requirements, as well as criteria for
software veriication, are deined. As long as the characteristics of software components directly depend
on the quality of the processes of software development and veriication, requirements for software life
cycle processes are considered. The second part of this chapter is dedicated to evaluation of software
for nuclear power plant I&C system. Criteria and principles of evaluation are observed. Evaluation
of the characteristic of software as a product and software development and veriication processes are
considered.
INTRODUCTION
embedded software (written for particular hard-
ware and usually executed without an operating
system), system software (e.g. operating systems
and platforms), middleware and device drivers,
application software (typically written to be run
under operating systems and usually interact
with users), configuration for FPGA devices,
Regardless of the purpose and application area any
modern digital systems has software as integral
part of the system. Instrumentation and control
systems are not exceptions and may include
software in many various forms: firmware and
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