Abstract
FirmSys is the first independently developed nuclear Digital Control System (DCS) platform of China, which has been widely used in many domestic units in service. To meet new requirements of severer ingress protection and new mechanical environment, etc., in the process of applying FirmSys to Small Marine Reactor (SMR) DCS, custom development of cabinet is needed. Firstly, we analysis the new requirements of SMR and identified the technical difficulties of custom product development. Secondly, in order to meet the requirements of new mechanical environment such as shock resistance, we mastered SMR DCS cabinet shock resistance design and analysis technologies by studying shock isolation design methods, and creatively realized double shock isolation design for SMR DCS cabinet. Finally, for ingress protection increased to IP44, we studied the design form of airway and optimized fan unit to meet the performance requirements of heat dissipation and higher ingress protection, thus to realize a highly sealed “chimney effect” heat dissipation design. The cabinet with the above design has successfully passed all test validations and meets the mechanical environment requirements of SMR DCS. The cabinet product for SMR based on FirmSys has a shock isolation efficiency up to 90%, reaching the international advanced level. It lays a solid foundation for the application of FirmSys in SMR DCS and has a good application and popularization value in ship and other related industries.
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Acknowledgement
We would like to give our gratitude to leaders of the company for their support and instruction during the development of the product, which ensured the correct direction of the project, and to the colleagues of FirmSys product development team for their hard work during the development of the product and their contribution to the success of the project.
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Liu, ZF., Jiang, ZR., Zuo, X., Chen, W., Li, ZL. (2020). Design and Analysis of Safety DCS Cabinet for Small Marine Reactor Based on the FirmSys. In: Xu, Y., Sun, Y., Liu, Y., Wang, Y., Gu, P., Liu, Z. (eds) Nuclear Power Plants: Innovative Technologies for Instrumentation and Control Systems. SICPNPP 2019. Lecture Notes in Electrical Engineering, vol 595. Springer, Singapore. https://doi.org/10.1007/978-981-15-1876-8_26
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DOI: https://doi.org/10.1007/978-981-15-1876-8_26
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