Design And Implementation Of The KIT/KPS System Reconstruction Scheme For Ling’ao Nuclear Power Station

KIT/KPS system is the most important instrument & control system of nuclear power plant.The performance of KIT/KPS system will affect the normal operation and safety of nuclear power plants.The supplier of KIT/KPS system of Unit 1 and Unit 2 of Lingao Nuclear Power Station is French SEMA GROUP.The KIT/KPS system was commissioned and installed in 2000,and began to operate in 2002 and 2003 respectively.It has been in operation for more than 10 years.Due to the limitation of the technical level at that time,the KIT/KPS system has defects in the system design and equipment manufacturing process.With the aging and elimination of hardware,the safety and economy of KIT/KPS are significantly reduced,and the KIT/KPS system of units 1 and 2 of Lingao Nuclear Power Station needs to be transformedSpeedyHold platform is a digital instrumentation and control system platform for nuclear power plants developed by China Techenergy Co.,Ltd..The Speedy Hold platform was first applied to the large-scale transformation of the digital I&C system of a nuclear power plant,which presented great difficulties and risks.The transformation of the KIT/KPS system is a huge project,which has different characteristics from the new nuclear power plant.The first is the short implementation time of the project.Because the transformation of the KIT/KPS system was implemented during the overhaul of the nuclear power plant,the commissioning time was much shorter than that of the newly-built power plant,and it was impossible to deploy,debug,and modify calmly.Second,the KIT/KPS transformation puts more constraints on the platform and application solutions.The new platform needs to consider the compatibility of the old platform with the interface of sensors,actuators and other equipment.Third,DCS needs to face technical blockade.The engineering design and products of the KIT/KPS system were previously provided by foreign manufacturers,and foreign manufacturers no longer provide technical support.All product requirements and design principles need to be re-identified and developed.Therefore,the biggest problem in KIT/KPS system transformation is how to systematically,quickly and accurately decompose and transform nuclear power plant engineering application requirements to form DCS platform R&D requirements,so that R&D personnel can fully understand the requirements of regulations and standards and apply reactor-type technologies Requirements,experience feedback,advanced features of peer products,and owner needs are fully implemented on the Speedy Hold platform.This project takes the KIT/KPS system of Units 1 and 2 of Lingao Nuclear Power Station as the object of transformation,analyzes the transformation requiements of KIT/KPS system of Unit 1 and 2 of Lingao Nuclear Power Station based on Speedy Hold platform,based on the event-driven demand analysis method,the transformation demand of the KIT/KPS system of Ling Ao Phase I was analyzed,and the Speedy Hold platform was developed using structured design.Using these two methods to solve the conversion problem from application requirements and product requirements,to ensure the completeness of requirements,and to solve the transition problem from platform requirements to module design,to ensure the correspondence between design solutions and requirements.The successful development of the KIT/KPS version of the SpeedyHold platform has enabled the Speedy Hold system platform to meet the application of large-scale acquisition systems and expanded the application market of the Speedy Hold platform.