Justification of an Fpga-based System Performing a Category C Function: Development of the Approach and Application to a Case Study

نویسندگان

  • Sofia Guerra
  • Daniel Sheridan
چکیده

Field Programmable Gate Arrays (FPGAs) have been gaining interest in the nuclear industry for a number of years. Their simplicity compared to microprocessor-based platforms is expected to simplify the licensing approach, and therefore reduce licensing project risks compared to software based solutions. However, few safety-related applications have been licensed in the nuclear industry; those that have are typically safety applications at Category A, and work on standardizing the licensing approach has been focused on this category. This paper presents work currently being performed on the justification of an FPGA that performs a Category C function, i.e., a function of the lowest safety category. The FPGA is part of the system monitoring vibration of the gags of the fuel assembly in one of the UK nuclear plants. Part of this work involves developing an approach for the justification which is consistent with the UK nuclear regulatory framework and commensurate with the safety category of the function performed. We draw on a number of standards, including those for software performing a function of similar criticality. However, evidence that the design and verification of the system followed a well-structured development process does not provide direct evidence that the system achieves the required behavior. Therefore, the approach also considers behavioral attributes that are important for the system, using a goal-based approach. This is complemented by a risk-informed approach, in which postulated hazards are evaluated to ensure they have been addressed and any remaining vulnerabilities of the system mitigated.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The Presentation of a Mathematical Model to Assess and Control the Inventory Control System through ABC Analysis Approach (A Case Study of Lino Meat Products Company)

Today, the effective inventory management plays an important role in the success of the organizations in the new business environment. It is not clearly possible for the organizations that store hundreds of inventory items to economically design an inventory management policy for each inventory item separately. Moreover, various inventory items may play quite different roles in the business ...

متن کامل

The Presentation of a Mathematical Model to Assess and Control the Inventory Control System through ABC Analysis Approach (A Case Study of Lino Meat Products Company)

Today, the effective inventory management plays an important role in the success of the organizations in the new business environment. It is not clearly possible for the organizations that store hundreds of inventory items to economically design an inventory management policy for each inventory item separately. Moreover, various inventory items may play quite different roles in the business ...

متن کامل

Application of triangulation approach in requirements engineering process: A study in analysis and design of the pediatrics epilepsy information system

Introduction: Requirements Engineering process is a crucial phase in software development. In order to achieve a successful design of health information systems (HISs), applying the best methodologies is essential. Therefore, the aim of the present study was to design pediatrics Epilepsy Information System (EPIS) as well as the use of triangulation approach in elicitation and validation of epil...

متن کامل

APPLICATION OF ADAPTIVE NEURO-FUZZY INFERENCE SYSTEM FOR THE ASSESSMENT OF DAMAGED ZONE AROUND UNDERGROUND SPACES

The development of an excavation damaged zone (EDZ) around an underground excavation can change the physical, mechanical and hydraulic behaviors of the rock mass near an underground space. This might result in endangering safety, achievement of costs and excavation planed. This paper presents an approach to build a prediction model for the assessment of EDZ, based upon rock mass characteristics...

متن کامل

Generation of Three-Phase PWM Inverter using Xilinx FPGA and its Application for Utility Connected PV System (RESEARCH NOTE)

Analysis and practical implementation of the regular symmetric sampled three-phase PWM inverter waveform has been presented in this paper. It is digitally implemented on a Xilinx field programmable gate array FPGA, and the essential considerations involved in the feasibility of using a Xilinx XC4008E software-based to generate PWM has been discussed. All the necessary Xilinx hardware/software t...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2015