scholarly journals Safety of Machinery: Significant Differences in Two Widely Used International Standards for the Design of Safety-Related Control Systems

Safety ◽  
2019 ◽  
Vol 5 (4) ◽  
pp. 76 ◽  
Author(s):  
Chinniah ◽  
Nix ◽  
Jocelyn ◽  
Burlet-Vienney ◽  
Bourbonnière ◽  
...  
Keyword(s):  
Control Systems ◽  
International Standards ◽  
Functional Safety ◽  
Operation And Maintenance ◽  
Hazard Zone ◽  
Safety Systems ◽  
Different Levels

Industrial machines are known to possess many hazards. There are many laws, regulations, standards and practices that aim at ensuring that machines are safe for different workers performing various tasks including operation and maintenance. Safeguards protect workers by stopping hazardous motion when actuated. Those safeguards are integrated into machinery using two widely used international standards for functional safety. However, these standards have some significant differences although they are both based on similar principles. This paper explores those differences and their potential impacts. Subjectivity in the specification and design of safety systems, based on the differences, can lead to different levels of reliability in the safety systems even when considering the same hazard zone of machinery based on which standard is used.

scholarly journals Hidden Security Breaches in Automatic Control of Technological Processes

2021 ◽  
Vol 25 (2) ◽  
pp. 31-39
Author(s):  
Marcin Szuster ◽  
Bartłomiej Kozioł
Keyword(s):  
Control Systems ◽  
Machine Tools ◽  
Functional Safety ◽  
Validation Process ◽  
New Approach ◽  
Industrial Plants ◽  
Security Breaches ◽  
Twin Model ◽  
Sequence Of Events ◽  
Safety Systems

The progressing automation and robotization in the industrial plants as well as the increasing complexity of the control systems of integrated machines make it necessary to constantly improve the functional safety of machines through the correct validation of safety systems. Despite the validation process carried out, the potential software errors may reveal during the usage of the machine as hidden security breaches. The article presents examples of security breaches of real machine tools and attempts to implement solutions of automated mechanisms for detecting security problems. Another aspect of the article is the new approach for detecting hidden security breaches. Using the „digital twin” model of the machine, a program that generates a sequence of events for testing control systems, and the use of a virtual reality (visual verification of the safety programs), it is possible to maximize the functional safety functions of the machine.

scholarly journals A Novel Hazard Analysis and Risk Assessment Approach for Road Vehicle Functional Safety through Integrating STPA with FMEA

2020 ◽  
Vol 10 (21) ◽  
pp. 7400
Author(s):  
Lei Chen ◽  
Jian Jiao ◽  
Tingdi Zhao
Keyword(s):  
Risk Assessment ◽  
Process Analysis ◽  
Hazard Analysis ◽  
International Standards ◽  
Functional Safety ◽  
Road Vehicles ◽  
Effect Analysis ◽  
Automotive Safety ◽  
Safety Requirements ◽  
Assessment Approach

ISO26262: 2018 is an international functional safety standard for electrical and/or electronic (E/E) systems within road vehicles. It provides appropriate safety requirements for road vehicles to avoid unreasonable residual risk according to automotive safety integrity levels (ASILs) derived from hazard analysis and risk assessment (HARA) required in the ISO26262 concept phase. Systems theoretic process analysis (STPA) seems to be designed specifically to deal with hazard analysis of modern complex systems, but it does not include risk evaluation required by most safety related international standards. So we integrated STPA into Failure Mode and Effect Analysis (FMEA) template to form a new method called system theoretic process analysis based on an FMEA template, STPAFT for shot, which could not only meet all the requirements of the concept phase in ISO26262, but also make full use of the advantages of the two methods. Through the focus of FMEA on low-level components, STPAFT can obtain more detailed causal factors (CFs), which is very helpful for derivation of safety goals (SGs) and the functional safety requirements (FSRs) in the concept phase of ISO26262. The application of STPAFT is described by the case study of fuel level estimation and display system (FLEDS) to show how the concept phase of ISO26262 could be supported by STPAFT.

scholarly journals Prevention and Control of Foodborne Diseases in Middle-East North African Countries: Review of National Control Systems

2019 ◽  
Vol 17 (1) ◽  
pp. 70 ◽  
Author(s):  
Dima Faour-Klingbeil ◽  
Ewen C. D. Todd
Keyword(s):  
Food Safety ◽  
Middle East ◽  
Control Systems ◽  
Public Health Problem ◽  
Building Blocks ◽  
International Standards ◽  
Foodborne Diseases ◽  
Management Approach ◽  
Global Public Health ◽  
Food Control

Foodborne diseases continue to be a global public health problem with an estimated 600 million people falling ill annually. In return, international standards are becoming stricter which poses challenges to food trade. In light of the increasing burden of foodborne diseases, many countries in the Middle East and North Africa (MENA) region have upgraded their food laws and undertaken changes to the organizational structure of their regulatory institutions to maintain or expand international export activities, tighten control on local and imported products, and protect consumers’ health. However, until this date, the published information on the regional health burdens of foodborne diseases is very limited and it is not clear whether the recent changes will serve towards science-based and effective preventive functions and the adoption of the risk management approach. In this review, we summarize the recent food safety issues and the national food control systems of selected countries in the region although we were challenged with the scarcity of information. To this end, we examined the national food safety systems in the context of the five essential elements of the FAO/WHO Guidelines for Strengthening National Food Control Systems. These five elements—food law and regulations; food control management; inspection services; laboratory services; food monitoring; and epidemiological data, information, education, communication, and training—constitute the building blocks of a national food control system, but could also serve as tools to assess the effectiveness of the systems.

Analysis of the regulatory framework for confi rmation of the functional safety requirements compliance of microprocessor-based railway automation systems

2020 ◽  
Vol 6 (4) ◽  
pp. 435-465
Author(s):  
V. Yu. Ryazanov ◽  
Keyword(s):  
Remote Control ◽  
Control Systems ◽  
Safety Management ◽  
Regulatory Framework ◽  
Point Of View ◽  
Functional Safety ◽  
Railway Transport ◽  
Safety Requirements ◽  
Automation Systems ◽  
Further Development

The article analyzes the current regulatory framework for proof of safety, quality assurance, and confi rmation of the conformity of microprocessor-based railway automation and remote control systems in the EAEU. CENELEC standards are briefl y discussed. A brief overview is provided as regards measures to ensure the required level of safety of microprocessor-based railway automation and remote control systems from the point of view of quality management of development, safety management, and confi rmation of the proper functioning of microprocessor systems. The practice of confi rming the railway transport automated process control systems comply with standards in the form of a declaration of conformity per TR CU 003/2011 has been analyzed. It is concluded that there is a need to develop a regulatory framework to ensure regulated analysis and assessment of railway automation and remote control systems following the requirements of functional safety, as well as further development of standardization documents to regulate methods for assessing functional safety.

Problems of Internal Control Organization at Enterprises of the Republic of Kazakhstan

2018 ◽  
Vol 8 (8) ◽  
pp. 2425
Author(s):  
Lena KHUANYSH
Keyword(s):  
Control System ◽  
Control Systems ◽  
Internal Control ◽  
Rapid Identification ◽  
International Standards ◽  
Internal Control System ◽  
The Republic ◽  
Tax Reporting ◽  
Commercial Organizations ◽  
Financial Transactions

The relevance of the problem is conditioned by the need for the organization of internal control in commercial organizations. Indeed, both the safety of their property and cash, achievement of financial goals and objectives by the company, and the avoidance of errors in accounting and tax accounting, which ultimately lead to a distortion of financial and tax reporting, depend on internal control. Errors and inaccuracies, deliberate violations can lead to sanctions from inspection bodies or are capable of misleading the shareholders (participants) and partners of the organization in the event of a distortion of the reporting. The purpose of the article is to develop recommendations for commercial organizations of the Republic of Kazakhstan on the improvement of internal control systems based on foreign practice. The leading methods of research of this problem are: questionnaire that allows you to obtain, based on a certain sample, actual results that allow you to evaluate the development of the internal control system of the enterprises under study; modeling that allows you to create an internal control model for large trading companies. This article presents the main approaches to the organization of internal control systems used in Kazakhstan companies operating in the sphere of industrial production enterprises. Features and problems of their application are also revealed, recommendations and optimal models for improving these systems are formulated, taking into account the modern needs of the developing business. The materials of the article are of practical value to trading companies, as the presented models and recommendations for improving the internal control system are aimed at improving financial control in the business of such entities, bringing these systems closer to international standards and increasing control effectiveness (more rapid identification of errors and violations, that happen in the accounting process and financial transactions).

scholarly journals Software requirements for the control systems according to the level of functional safety

2016 ◽  
Vol 12 (1) ◽  
pp. 25-32
Author(s):  
D. Gabriška
Keyword(s):  
Life Cycle ◽  
Control Systems ◽  
Management Development ◽  
Software Requirements ◽  
Functional Safety ◽  
Concept Design ◽  
Software Safety ◽  
Security Systems ◽  
Design And Implementation ◽  
Initial Concept

Abstract The article describes the main requirements of the software subsystems management development. Standard IEC 61508-3 provides an overview at all stages of the life cycle of all security systems, including E/E/PE of a security system from initial concept, design, and implementation to operation maintenance. In this paper we analyzed set out requirements for the drafting of a software architecture that is consistent with the hardware architecture while meeting specified requirements for software safety.

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