HEDOMS: A Framework and Toolkit for Analysis of Human Error and Disturbance Occurrence in Manufacturing Systems

2000 ◽  
Vol 44 (22) ◽  
pp. 847-850
Author(s):  
Mònica Paz Barroso ◽  
John R. Wilson
Keyword(s):  
System Reliability ◽  
System Performance ◽  
Manufacturing Systems ◽  
Human Error ◽  
Error Reduction ◽  
Human Reliability ◽  
Modern Manufacturing ◽  
Definition Of ◽  
The Way

New demands on modern manufacturing systems have emphasised the need for higher levels of overall system reliability. The main focus of this paper is that of the reliability of manufacturing personnel and the way in which this interrelates with overall system performance. A framework - Human Error and Disturbance Occurrence in Manufacturing Systems (HEDOMS) is proposed, which integrates human reliability with overall system performance, relating human error with disturbance occurrence and handling. The HEDOMS framework has been extended into a toolkit to enable the identification of potential for human error and disturbance occurrence in manufacturing systems, as well as the definition of suitable error reduction measures.

Human Reliability in Industrial Systems: An Overview

1976 ◽  
Vol 20 (1) ◽  
pp. 12-16 ◽  
Author(s):  
David Embrey
Keyword(s):  
System Reliability ◽  
Human Error ◽  
Quantitative Assessment ◽  
Reliability Assessment ◽  
Human Reliability ◽  
Reliability Data ◽  
Industrial Systems ◽  
Areas Of Interest

This paper describes some of the major areas of interest in the field of human reliability. The nature of system reliability assessment is described, and the importance of considering human reliability emphasized. Human error is then discussed from several standpoints, and techniques for its quantitative assessment described. The review concludes with a description of the various sources of human reliability data and the research that is currently in progress.

scholarly journals Human reliability research of numerical control machining based on optimized Holistic Decision Tree

2018 ◽  
Vol 169 ◽  
pp. 01030
Author(s):  
Lu Chen ◽  
Run-Jiang Zhao ◽  
Jian Jiao ◽  
Yan-Bo Zhang
Keyword(s):  
Decision Tree ◽  
System Reliability ◽  
Human Error ◽  
Influence Factor ◽  
Relative Weight ◽  
Numerical Control ◽  
Human Reliability ◽  
Numerical Control Machining ◽  
Machining System ◽  
Machine Interaction

Human reliability has been a focus in system reliability and safety researches since 1960s, and now human factor has become an increasingly important reason which affects system reliability. Numerical control machining system characterized by man-machine interaction can be applied to automatic parts machining with high efficiency. However, professional and technical staffs are still needed for clamping, positioning, inspection and others. So there is no doubt that the quality of the parts might be influenced by personnel behaviour. What’s more, on-site staff is responsible for handling potential fault directly. The study on human error plays an important role to ensure the quality and reduce industrial accident. Holistic Decision Tree (HDT) is a dynamic Human Reliability Analysis (HRA) method, emphasizing the wholeness of man-machine interaction. This paper tries to use an optimized HDT method to investigate human reliability in numerical control machining system. In order to obtain a rational order of the importance of each IF, this paper incorporates entropy weight method to the conventional expert method to determine the relative weight value of each human behaviour influence factor (IF), and finally calculates the human error probability (HEP).

Optimal lockout/tagout, preventive maintenance, human error and production policies of manufacturing systems with passive redundancy

2014 ◽  
Vol 20 (4) ◽  
pp. 453-470 ◽  
Author(s):  
Behnam Emami-Mehrgani ◽  
Sylvie Nadeau ◽  
Jean-Pierre Kenné
Keyword(s):  
Preventive Maintenance ◽  
Manufacturing Systems ◽  
Human Error ◽  
Manufacturing System ◽  
System Capacity ◽  
Planning Problem ◽  
Human Reliability ◽  
Content Type ◽  
Machine Age ◽  
Maintenance Activities

Purpose – The analysis of the optimal production and preventive maintenance with lockout/tagout planning problem for a manufacturing system is presented in this paper. The considered manufacturing system consists of two non-identical machines in passive redundancy producing one type of part. These machines are subject to random breakdowns and repairs. The purpose of this paper is to minimize production, inventory, backlog and maintenance costs over an infinite planning horizon; in addition, it aims to verify the influence of human reliability on the inventory levels for illustrating the importance of human error during the maintenance and lockout/tagout activities. Design/methodology/approach – This paper is different compared to other research projects on preventive maintenance and lockout/tagout. The influence of human error on lockout/tagout as well as on preventive maintenance activities are presented in this paper. The preventive maintenance policy depends on the machine age. For the considered manufacturing system the optimality conditions are provided, and numerical methods are used to obtain machine age-dependent optimal control policies (production and preventive maintenance rates with lockout/tagout). Numerical examples and sensitivity analysis are presented to illustrate the usefulness of the proposed approach. The system capacity is described by a finite-state Markov chain. Findings – The proposed model taking into account the preventive maintenance activities with lockout/tagout and human error jointly, instead of taking into account separately. It verifies the influence of human error during preventive maintenance and lockout/tagout activities on the optimal safety stock levels using an extension of the hedging point structure. Practical implications – The model proposed in this paper might be extended to manufacturing systems, but a number of conditions must be met to make effective use of it. Originality/value – The originality of this paper is to consider the preventive maintenance activities with lockout/tagout and human error simultaneously. The control policy is obtained in order to find the solution for the considered manufacturing system. This paper also brings a new vision on the importance of human reliability during preventive maintenance and lockout/tagout activities.

scholarly journals ANALISIS HUMAN RELIABILITY PADA OPERATOR MAINTENANCE MESIN UNTUK MENGENDALIKAN HUMAN ERROR DENGAN METODE SPAR-H DI PT. TJOKRO PUTRA PERKASA

2018 ◽  
Vol 6 (3) ◽  
pp. 269
Author(s):  
Aditya Praswuri Wulandari
Keyword(s):  
System Reliability ◽  
Human Error ◽  
Working Environment ◽  
Observation Data ◽  
Plant Analysis ◽  
Human Reliability ◽  
Cross Sectional ◽  
Hierarchical Task Analysis ◽  
Organizational Policies ◽  
Human Operators

Operator have considerable contribution in the operation of the system trough its role in the completion of their work. Therefore it is important to know the operator’s reliability (human reliability). The levels of human reliability is determined by calculating the potential in making mistakes, known as human error. Human error is influenced by the inadequate system design, the working bad situation, the high complexity of the work, the characteristics of human behaviour, the mental and physical fatigue, the working environment and organizational policies. The main objective of this study was to analyze the reliability of the human operators to control the occurance of human error. This study was an observational with cross-sectional approach. The study was conducted on 14 of operators maintenance machine in PT. Tjokro Putraperkasa. Data were collected by means of interview and observation. Data were obtained using Hierarchical Task Analysis (HTA) and Standardized Plant  Analysis  Risk  Human  Reliability  Assessment  (SPAR-H).  The  result  showed  that  most  (80%)  of  the operators did not wear Personal Protective Equipment (PPE), possible were widely found in preventive maintenance machine bubut, the high score (HEP= 0,0477) of human unreliability was found in operators working intruction in machine bubut, hobbing and CNC, as whole the system reliability was still low, and the majority (80%) of operators were still unreliable in doing their job.Keywords:human error, human reliability, SPAR-H.

scholarly journals Systematic Human Reliability Analysis (SHRA): A New Approach to Evaluate Human Error Probability (HEP) in a Nuclear Plant

2020 ◽  
Vol 6 (1) ◽  
pp. 345-362
Author(s):  
Gianpaolo Di Bona ◽  
Domenico Falcone ◽  
Antonio Forcina ◽  
Luca Silvestri
Keyword(s):  
Emergency Management ◽  
System Reliability ◽  
Error Probability ◽  
Human Error ◽  
External Factors ◽  
Human Reliability ◽  
Human Reliability Analysis ◽  
New Approach ◽  
Internal And External Factors ◽  
Human Error Probability

Emergency management in industrial plants is a fundamental issue to ensure the safety of operators. The emergency management analyses two fundamental aspects: the system reliability and the human reliability. System reliability is the capability of ensuring the functional properties within a variability of work conditions, considering the possible deviations due to unexpected events. However, system reliability is strongly related to the reliability of its weakest component. The complexity of the processes could generate incidental situations and the worker appears (human reliability) to be the weakest part of the whole system. The complexity of systems influences operator’s ability to take decisions during emergencies. The aim of the present research is to develop a new approach to evaluate human error probability (HEP), called Systematic Human Reliability Analysis (SHRA). The proposed approach considers internal and external factors that affect operator’s ability. The new approach is based on Nuclear Action Reliability Assessment (NARA), Simplified Plant Analysis Risk Human Reliability (SPAR-H) and on the Performance Shaping Factors (PSFs) relationship. The present paper analysed some shortcomings related to literature approaches, especially the limitations of the working time. We estimated HEP, after 8 hours (work standard) during emergency conditions. The correlations between the advantages of these three methodologies allows proposing a HEP analysis during accident scenarios emergencies. SHRA can be used to estimate human reliability during emergencies. SHRA has been applied in a nuclear accident scenario, considering 24 hours of working time. The SHRA results highlight the most important internal and external factors that affect operator’s ability.

scholarly journals Quality Checks Logit Human Reliability (LHR): A New Model to Evaluate Human Error Probability (HEP)

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Gianpaolo Di Bona ◽  
Domenico Falcone ◽  
Antonio Forcina ◽  
Filippo De Carlo ◽  
Luca Silvestri
Keyword(s):  
System Reliability ◽  
Error Probability ◽  
Human Error ◽  
Working Hours ◽  
Working Time ◽  
Human Reliability ◽  
Human Reliability Analysis ◽  
New Approach ◽  
Accident Scenario ◽  
Human Error Probability

In the years, several approaches for human reliability analysis (HRA) have been developed. The aim of the present research is to propose a hybrid model to evaluate Human Error Probability (HEP). The new approach is based on logit-normal distribution, Nuclear Action Reliability Assessment (NARA), and Performance Shaping Factors (PSFs) relationship. In the research, shortcomings related to literature approaches are analyzed, especially the limitations of the working time. For this reason, PSFs after 8 hours (work standard) during emergency conditions were estimated. Therefore, the correlation between the advantages of these three methodologies allows proposing a HEP analysis during accident scenarios and emergencies; a fundamental issue to ensure the safety and reliability in industrial plants is emergency Mmnagement (EM). Applying EM methodology, two main aspects are analyzed: system reliability and human reliability. System reliability is strongly related to the reliability of its weakest component. During incidental situations, the weakest parts of the whole system are workers (human reliability) and accidental scenarios influence the operator’s ability to make decisions. This article proposes a new approach called Logit Human Reliability (LHR) that considers internal and external factors to estimate human reliability during emergencies. LHR has been applied in a pharmaceutical accident scenario, considering 24 hours of working time (more than 8 working hours). The results highlighted that the LHR method gives output data more in conformity with data banks than the conventional methods during the stress phase in an accident scenario.

scholarly journals What is a firm? A reply to Jean-Philippe Robé

2021 ◽  
pp. 1-11
Author(s):  
Simon Deakin ◽  
David Gindis ◽  
Geoffrey M. Hodgson
Keyword(s):  
Theory Of The Firm ◽  
Recent Book ◽  
Everyday Language ◽  
Modern Capitalism ◽  
Legal Foundations ◽  
Common Parlance ◽  
The Law ◽  
Business Entities ◽  
Definition Of ◽  
The Way

Abstract In his recent book on Property, Power and Politics, Jean-Philippe Robé makes a strong case for the need to understand the legal foundations of modern capitalism. He also insists that it is important to distinguish between firms and corporations. We agree. But Robé criticizes our definition of firms in terms of legally recognized capacities on the grounds that it does not take the distinction seriously enough. He argues that firms are not legally recognized as such, as the law only knows corporations. This argument, which is capable of different interpretations, leads to the bizarre result that corporations are not firms. Using etymological and other evidence, we show that firms are treated as legally constituted business entities in both common parlance and legal discourse. The way the law defines firms and corporations, while the product of a discourse which is in many ways distinct from everyday language, has such profound implications for the way firms operate in practice that no institutional theory of the firm worthy of the name can afford to ignore it.

The Place of Interests in Hobbes’s Civil Science

2016 ◽  
Vol 29 (2) ◽  
pp. 105-128
Author(s):  
Elliott Karstadt
Keyword(s):  
The Political ◽  
Crucial Importance ◽  
Political Issue ◽  
Political Ideas ◽  
Form Of Government ◽  
Civil Science ◽  
Definition Of ◽  
The Impact ◽  
The Way

Many scholars argue that Hobbes’s political ideas do not significantly develop between The Elements of Law (1640) and Leviathan (1651). This article seeks to challenge that assumption by studying the way in which Hobbes’s deployment of the vocabulary of ‘interest’ develops over the course of the 1640s. The article begins by showing that the vocabulary is newly important in Leviathan, before attempting a ‘Hobbesian definition’ of what is meant by the term. We end by looking at the impact that the vocabulary has on two key areas of Hobbes’s philosophy: his theory of counsel and his arguments in favour of monarchy as the best form of government. In both areas, Hobbes’s conception of ‘interests’ is shown to be of crucial importance in lending a new understanding of the political issue under consideration.

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