应用于B类功能的商用操作系统软件CGD研究与实践

Research and Practice of Commercial Operating System Software CGD Applied to Class B Functions

标准要求核电厂数字化仪控系统(DCS)中的软件需遵守标准IEEE 1012,IEC 60880和IEC 62138来执行V&V,但随着核电的快速发展,国产化核电厂数字化仪表控制系统(DCS)面对着极大的市场需求,DCS中执行或影响安全功能所需的操作系统软件难以寻找到满足法规要求的核级供应商。为了降低开发难度、增强代码可读性以及可移植性,核电厂不可避免地引入商用操作系统软件,而商用操作系统软件的质量得不到保证可能会影响DCS的安全运行。商品级物项适用性确认(CGD)方法是确保核级商用操作系统软件能够正确可靠执行安全功能的重要手段,而国内尚未形成完整的技术体系。本文通过研究国内外CGD方法,初步形成了B类系统中商用操作系统软件CGD工作流程和体系,并在国内某工程项目上成功进行实践,为推动我国核电领域的CGD标准体系的建立及监管体系的完善奠定技术基础。

The standard requires that the software in the digital instrument control system(DCS)of the nuclear power plant shall comply with IEEE1012,IEC60880 and IEC62138 to implement V&V.In the face of great market demand,it is difficult to find the nuclear-level suppliers that meet the requirements of laws and regulations for the operating system software required to implement or affect safety functions in DCS.In order to reduce development difficulty,enhance code readability and portability,it is inevitable for nuclear power plants to introduce commercial operating system software.However,the quality of commercial operating system software cannot be guaranteed,which may impact the safety normal running.Commercial Grade Dedication(CGD)method is an important means to ensure that nuclear-level commercial operating system software can correctly and reliably perform safety functions,but a complete technical system has not yet been formed in China.This paper has initially formed the CGD workflow and technology system of the commercial operating system software in the class B system by studying the CGD method at home and abroad,and successfully practiced on a domestic engineering project,which laid a technical foundation for promoting the establishment and perfect of the CGD standard system in the domestic nuclear power field and the improvement of the regulatory system.