Browse all Channels
Inderscience Publishers
World Trade Center Bldg, 29, route de Pre-Bois, Case Postale 896 ,
Geneva 15 ,
CH-1215
Switzerland
  4. Design aspects of safety critical instrumentation of nuclear ...

Design aspects of safety critical instrumentation of nuclear installations

0
- By:

Courtesy of Inderscience Publishers

Safety critical instrumentation systems ensure safe shutdown/configuration of the nuclear installation when process status exceeds the safety threshold limits. Design requirements for safety critical instrumentation such as functional and electrical independence, fail-safe design, and architecture to ensure the specified unsafe failure rate and safe failure rate, human machine interface (HMI), etc., are explained with examples. Different fault tolerant architectures like 1/2, 2/2, 2/3 hot stand-by are compared for safety critical instrumentation. For embedded systems, software quality assurance is detailed both during design phase and O&M phase. Different software development models such as waterfall model and spiral model are explained with examples. The error distribution in embedded system is detailed. The usage of formal method is outlined to reduce the specification error. The guidelines for coding of application software are outlined. The interface problems of safety critical instrumentation with sensors, actuators, other computer systems, etc., are detailed with examples. Testability and maintainability shall be taken into account during design phase. Online diagnostics for safety critical instrumentation is detailed with examples. Salient details of design guides from Atomic Energy Regulatory Board, International Atomic Energy Agency and standards from IEEE, BIS are given towards the design of safety critical instrumentation systems.

Keywords: safety critical system, context diagram, three port isolator, water fall model, configuration management, formal method, nuclear power, nuclear energy, safety critical instrumentation, nuclear safety, instrumentation design, fault tolerant architectures, software quality assurance, QA, embedded systems, online diagnostics

Related articles

  • Ensuring consistent, reliable safety in the global food supply

    Abstract / Summary Waters is a leader in developing food and water quality testing systems that incorporate analytical standards and reagents, sample preparation products, chromatographic columns, instrumentation, and data management software. Our comprehensive solutions offer food and beverage laboratories the tools needed to check compliance with food and environmental regulations, decrease operational costs, increase productivity, and ensure consumer safety. Read our in-depth application notes to learn...

  • Human Error Threatens Safety in Hazardous Areas

    The top 5 problems identified in hazardous areas are Poor or no maintenance on flameproof (Ex d) enclosures. Due to corrosion—especially when equipment is installed outdoors—the Ex d protection is gone 2-3 years after installation. Incorrectly installed Ex d cable glands. Even if the combination of cable and gland is chosen correctly, the instructions on how to install the cable gland and cable are often not followed correctly. As a result, if an explosion occurs, flames will propagate in the Ex d...

  • A comprehensive evaluation of regional water safety systems based on a similarity cloud model

    Regional water safety systems are affected by social, economic, ecological, hydrological and other factors, and their effects are complicated and variable. Studying water safety systems is crucial to promoting the coordinated development of regional water safety systems and anthropogenic processes. Thus, a similarity cloud model is developed to simulate the evolution mechanisms of fuzzy and complex regional systems of water security and overcome the uncertainty that is associated with the indices that are used in...

  • Measuring sporadic gastrointestinal illness associated with drinking water – an overview of ...

    There is an increasing awareness that drinking water contributes to sporadic gastrointestinal illness (GI) in high income countries of the northern hemisphere. A literature search was conducted in order to review: (1) methods used for investigating the effects of public drinking water on GI; (2) evidence of possible dose–response relationship between sporadic GI and drinking water consumption; and (3) association between sporadic GI and factors affecting drinking water quality. Seventy-four articles were selected,...

  • Systematic risk management approach of household drinking water from the source to point of use

    The water safety plan (WSP) approach is being widely adopted as a systematic approach to improving the safety of drinking water. However, to date, the approach has not been widely used for improving the safety of drinking water in those settings where people have to collect water away from their home. Most rural areas in South Africa still consume unsafe water despite WSP implementation and improved water sources provided by municipalities. This study used hazard analysis critical control point to assess drinking...

Customer comments

No comments were found for Design aspects of safety critical instrumentation of nuclear installations. Be the first to comment!