Environmental Engineering Reference
In-Depth Information
Opportunities of the RADIY Platform
Licensing of the RADIY Platform
Application of the RADIY platform with the
use of FPGA technology provides the following
opportunities:
The RADIY platform has been licensed for NPP
application in Ukraine and in Bulgaria. The main
idea for licensing FPGA-based NPP I&C systems
lays in consideration of FPGA-chip as hardware
and FPGA electronic design as a special kind of
software with specific development and verifica-
tion stages (Siora et al., 2009).
Qualification tests of FPGA-based hardware
in accordance with International Electrotechnical
Commission (IEC) standard requirements include:
radiation exposure withstand qualification; envi-
ronmental (climatic) qualification; seismic and
mechanical impacts qualification; electromagnetic
compatibility qualification. Results of qualifica-
tion tests confirmed FPGA-based hardware com-
pliance with IEC safety requirements.
FPGA electronic design has a V-shape life cycle
in accordance with requirements of standard IEC
62566 “NPP - I&C important to safety - Selec-
tion and use of complex electronic components
for systems performing category A functions.”
The safety assessments have been conducted
by Ukrainian State Scientific Technical Centre
on Nuclear and Radiation Safety (SSTC NRS),
which is the supporting organization of Ukrai-
nian Regulatory Authority. Experts of SSTC
NRS have considerable experience in the area of
FPGA-based systems safety assessment, as they
have performed reviews of all thirty three FPGA-
based safety systems supplied to Ukrainian NPP
units since 2003.
To implement control and other safety-
critical functions in the form of FPGA with
implemented electronic design, without
software.
To use software only for diagnostics, ar-
chiving, signal processing, data reception
and transfer between I&C systems com-
ponents; failures of those functions do not
afect execution of basic I&C systems con-
trol functions, and an operation system is
not applied at I&C systems lower levels.
To process parallel of all control algo-
rithms within one cycle, thus ensuring high
performance of the system (for instance, a
processing cycle of Reactor Trip System
is 20 ms) and proven determined temporal
characteristics.
To develop the software-hardware plat-
form in such a way that it becomes a uni-
versal interface to create I&C systems for
any type of reactors.
To assure high reliability and availability
due to the application of industrial com-
ponents as well as using the principles of
redundancy, independency, single failure
criterion, and diversity.
To modify the I&C system after commis-
sioning in a quite simple manner, including
algorithm alterations, without any interfer-
ence in I&C systems' hardware structure.
Implementation of the RADIY
Platform-Based I&Cs in NPPs
To reduce by more than 10 times the num-
ber of contact and terminal connections,
which cause many operational failures of
equipment on account of the wide use of
integrated solutions and iber optic com-
munication lines, etc.
The RADIY platform has been applied to the
following NPP I&Cs systems, which perform
reactor control and protection functions: Reactor
Trip Systems (RTS); these I&Cs were developed
as two-version systems consisting of two triple
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