verification of failover effects from distributed control system communication networks in digitalized nuclear power plants
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ID: 147468
2017
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Abstract
Distributed Control System (DCS) communication networks, which use Fast Ethernet with redundant networks for the transmission of information, have been installed in digitalized nuclear power plants. Normally, failover tests are performed to verify the reliability of redundant networks during design and manufacturing phases; however, systematic integrity tests of DCS networks cannot be fully performed during these phases because all relevant equipment is not installed completely during these two phases. In additions, practical verification tests are insufficient, and there is a need to test the actual failover function of DCS redundant networks in the target environment. The purpose of this study is to verify that the failover functions works correctly in certain abnormal conditions during installation and commissioning phase and identify the influence of network failover on the entire DCS. To quantify the effects of network failover in the DCS, the packets (Protocol Data Units) must be collected and resource usage of the system has to be monitored and analyzed. This study introduces the use of a new methodology for verification of DCS network failover during the installation and commissioning phases. This study is expected to provide insight into verification methodology and the failover effects from DCS redundant networks. It also provides test results of network performance from DCS network failover in digitalized domestic nuclear power plants (NPPs).
| Reference Key |
min2017nuclearverification
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|---|---|
| Authors | ;Moon-Gi Min;Jae-Ki Lee;Kwang-Hyun Lee;Dongil Lee;Hee-Taek Lim |
| Journal | Journal of hazardous materials |
| Year | 2017 |
| DOI |
10.1016/j.net.2017.03.002
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