Environmental Engineering Reference
In-Depth Information
BACKGROUND
Expert review of the NPP I&C systems requires
effective information support because of process-
ing of a large amount of different information.
In the field of the I&C systems it is especially
significant due to the following reasons:
Expert reviews of modernized I&C systems for
NPP of Ukraine are performed according to re-
quirements of national regulatory documents (NP,
2005,a, GND, 2000, NP, 2005,b, NP, 2000), and
recommendation of international standards IAEA,
2002, IEC, 2011 and other.
At present the procedure of NPP I&C systems
expert review is not automated in Ukraine. Earlier
some scientists issued different publications (e.g.
Khvastunov, 1981, Bashlykov, 1986, Tokarenko,
2000, Larichev, 2008), about using of expert
assessments and designing of making-decision
systems in power engineering. But these publica-
tions describe only technological processes and
operative-dispatch management and were based
on comparison of separate decisions of different
experts. This does not take place in our case, be-
cause decisions are made by a group of experts
and are not disputed.
Scientists Konorev, 2007, Kharchenko, 2004
solved the task of automation of software analysis
and assessment of NPP I&C systems and develop-
ment instrumentation tools for this work. But this
task covers only part of expert reviews for NPP
I&C systems.
This chapter contains a short overview of expert
review organization at different life cycle stages
during NPP I&C systems modernization. Propos-
als for automation of NPP I&C systems expert
review process through creation of an automated
system for information support of expert activity
are made in the chapter.
1. Each I&C system sometimes contains tens
of thousands electronic components;
2. At present a process of rapid development of
electronics and computer technology both in
hardware components and software is taking
place, it causes a necessity for modernization
of the NPP I&C systems not only because of
their physical ageing but also of obsolescence
(while NPP technological equipment does
not undergo such changes);
3. Due to the fast development of electronics,
normative base in the field of the I&C sys-
tems is also improving quickly enough.
Hence, experts have not only to analyze large
amounts of information, but also constantly moni-
tor changes of electronics and computer equipment
themselves and requirements specified by national
and international standards.
This fact necessitates the creation of automated
system for support of expert activity for safety
assessment of the NPP I&C systems.
The creation of such an information support
system can be considered as one of the directions
of knowledge management in expert organization.
Knowledge management consists in a complex,
systematic approach to identification, management
and distribution of organization's knowledge and
ability of employees to create new knowledge col-
lectively and in such a way to facilitate purpose
achievement of this organization. This promotes
conditions for improving the work efficiency for
all employees at the enterprise by simultaneous
decrease of efforts.
SAFETY LIFE CYCLE OF THE
NPP I&C SYSTEMS DURING
THE MODERNIZATION
There is a large number of life cycle models (fur-
ther - LC) of I&C systems, describing in various
international (for example, in IAEA, 2002, IEC,
2008, IEC, 2011, ISO/IEC, 2008) and national (for
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