Environmental Engineering Reference
In-Depth Information
eration at the NPP, as well as in case of parameters
current supply deviation .
Each cabinet is provided with continuous
control of primary power supply on both inputs
and measuring of secondary power supply source
output voltages. Information about primary and
secondary power supply are sent to workstation
for displaying and archiving. Power disconnect-
ing of power supply on both inputs in at least on
cabinet leads to forming of general signal “Set
Failure”, which is sent to MCR.
Protection of redundant channel failures caused
by defects of purchased components and errors
during software development (including electronic
designs of FPGA logic structure) is provided by
diversity principle realization.
SHC E&PRP sets quality assurance is guar-
anteed by system of quality design, product
development, manufacture and delivery manage-
ment at RPP “Radiy” (certificate of conformance
with standard ISO, 9001). The current quality
management system is certified by International
Community of engineering supervision (TÜV
NORD GRUPPE). Development, manufacture,
testing of the deliverable complete set were held
in accordance with quality assurance programs
developed by RPC “Radiy” in accordance with
ISO, 2000.
Recommended to analyze the other decision-
elaboration and using in SHC E&PRP special
blocks for direct input of signals from neutron-
flux detectors. These blocks can be set in signal
processing crates, data from them can be process
by the same FPGA, as the other input blocks.
FUTURE RESEARCH DIRECTIONS
International experience of nuclear energy us-
age for peaceful purposes proves the fact that
we should not be satisfied with the safety and
reliability level that has already been achieved on
previously created and used nowadays emergency
and preventative unit protection systems, which
play the main role in control and monitoring of
NPP performance.
The future research trends aimed at improving
of emergency and preventive unit protection sys-
tems can be: improving of information exchange
methods not only between E&PRP system com-
ponents, but with other control and information
unit systems, modernization of human-machine
interface, usage of new ways and formats of in-
formation protection.
Main future research direction is also upgrading
of platforms for SHC E&PRP, what will be used
in future. Under the creation of new platforms
the appearance of new generations of FPGA and
the other electronic components with improving
characteristics, also as the introduction of develop-
ing now regulations and standard with advanced
requirements to I&C functional safety, have to be
take in account systems.
Solutions and Recommendations
Information about excess o neutron power values
and decrease of power change period in acting now
modernized emergency and preventive reactor
protection system enter to inputs of SHC E&PRP
as discrete signals from neutron flux monitoring
systems (from two deliverable complete sets SHC
NFMS). This decision accepted in typical design
of WWER-1000 unit is not optimal, because it
includes the additional devices between neutron-
flux detectors to signals forming cabinets of SHC
E&PRP, also as cable lines, devices that support
SHC NFMS operation, еtс.
CONCLUSION
For the first time at Ukrainian NPPs as a central
part of emergency and preventative unit protec-
tion were used SHC E&PRP complexes, devel-
oped by Ukrainian specialists on base of leading
information technologies with usage of world
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