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Principles of accident prevention according to Heinrich

Principles of Accident Prevention Rls Human Car

  1. Fundamentals of Accident Prevention: As explained by Heinrich, accident prevention is both, science and art. It represents control performance of man, machine and physical environment. The word 'control' includes prevention as well as the correction of unsafe conditions and actions
  2. The fundamental principles for accident prevention, according to Heinrich, are first listed 4 pages later: 1) creation and maintenance of active interest in safety (we could call this commitment, I guess), 2) fact finding, and 3) corrective action based on those facts. Quite common sense and we're probably all in agreement
  3. o theory, 88% of all accidents are caused by unsafe acts of people, 10% by unsafe actions and 2% by acts of God. He proposed a five-factor accident sequence in which each factor would actuate the next step in the manner of toppling do
  4. o Theory According to Heinrich, an accident is one factor in a sequence that may lead to an injury. • The factors can be visualized as a series of do
  5. o theory and accident triangle - continue to draw followers and critics
  6. or accidents and near misses and proposes that if the number of
  7. HEINRICH THEORY OF ACCIDENT CAUSATION INJURY IS THE RESULT OF COMPLETION OF 5 DOMINOS 1. PRINCIPLE OF SAFETY MANAGEMENT management procedures that fix ACCOUNTABILITY. Reasons for Accident Prevention Accident Prevention 1 Humanitarian 4 Legal 3 Social 2 Economic . How to achieve Safety

Discussing Heinrich, Part 1: Heinrich '4

  1. Heinrich expresses the belief that psy-chology in accident prevention is a fundamen-tal of great importance (H-1). His premise is that psychology lies at the root of sequence of accident causes (H-2)
  2. Herbert W. Heinrich was a pioneering occupational safety researcher, whose publication Industrial Accident Prevention: A Scientific Approach [Heinrich ] was based on the analysis of large amounts of accident data collected by his employer, a large insurance company
  3. 3)Accident Prevention Preventing future accidents is a major objective of workers' compensation. The theory underlying this objective is that employers will invest in accident prevention programs to hold down compensation costs. The payoff to employers comes in the form of lower insurance premiums that result from fewer accidents (theoretically)
  4. Keywords: Accident prevention, Behavior based safety (BBS), Safety Index (SI), Construction project 1. Introduction According to Heinrich on the foundation of 75,000 of industrial accidents that 88% of accidents were caused by human unsafe behavior, 10% accidents were caused by unsafe psychical environment and only 2% accidents were attributed.
  5. or injuries, and one major injury

The basis for this process is the Heinrich's pyramid, which adapted to aviation-in the form of an iceberg, proposes that for every fatal accident there are 10 non-fatal accidents, 30 reportable incidents and 600 near misses and an unknown number of unsafe acts which went unnoticed According to W.H. Heinrich (1931), who developed the so-called domino theory, 88% of all accidents are caused by unsafe acts of people, 10% by unsafe actions and 2% by acts of God. He proposed a five-factor accident sequence in which each factor would actuate the next step in the manner of toppling dominoes lined up in a row Principles of Accident Prevention Accident (1956) prevention is an essential part of a good management and workmanship. Management and workers must cooperate wholeheartedly in securing freedom from accident. Top management must take the lead in organizing safety. There must be a definite and known safety policy in each workplace. The.

Heinrich's pyramid was first released in his book Industrial Accident Prevention: A Scientific Approach. Fundamentally, the pyramid claims that focussing on near misses and first aid incidents (bottom of the pyramid) leads to a reduction of fatalities and lost time injuries (top of the pyramid) The accident is avoided, according to Heinrich, by removing one of the dominoes, normally the middle one or unsafe act. This theory provided the foundation for accident prevention measures aimed at preventing unsafe acts or unsafe conditions Heinrich's Domino Theory states that accidents result from a chain of sequential events, metaphorically like a line of dominoes falling over. When one of the dominoes falls, it triggers the next one, and the next... - but removing a key factor (such as an unsafe condition or an unsafe act) prevents the start of the chain reaction Heinrich's work is claimed as the basis for the theory of behavior-based safety by some experts of this field, which holds that as many as 95 percent of all workplace accidents are caused by unsafe acts Heinrich's 1920's Study of the Cause of Industrial Accidents • Heinrich, an official with the Travelers Insurance Company was a pioneer of accident prevention and industrial safety. After studying 75,000 industrial accidents in the 1920's he concluded that: • 88% of industrial accidents are caused by unsafe acts committed by fellow workers. • 10% of industrial accidents are caused.

1) Accidents are caused by unsafe acts and conditions. That idea, Petersen noted, is derived from W. H. Heinrichs Industrial Accident Prevention, first published in 1931. Heinrich said unsafe acts account for 88 percent of accidents, while unsafe conditions account for 10 percent. That was his first axiom and was something that he just made up Domino Theory • H.W. Heinrich - an early pioneer of accident prevention and industrial safety • According to Heinrich, there are five factors in the sequence of events leading up to an accident. These factors can be summarized as follows: i. Social environment and ancestry ii. Fault of person ii Domino Theory • H.W. Heinrich - an early pioneer of accident prevention and industrial safety • According to Heinrich, there are five factors in the sequence of events leading up to an accident. These factors can be summarized as follows: i. Social environment and ancestry ii. Fault of person iii The theory is operationalized in ten statements called the Axioms of Industrial Safety. According to this theory, there are five factors in the sequence of events leading to an accident: ancestry/social environment, fault of person, unsafe act/mechanical or physical hazard, accident, and injury

Chapter 56 - Accident Preventio

According to Heinrich on the foundation of 75,000 of industrial accidents that 88% of accidents were Figure 1 BBS principle to accident prevention . According to key behavior checklist the observer sets about behavior observation and rectificatio The Mercer ORC/BST study group (ExxonMobil, Potash Corp., Shell, BHP Billiton, Cargill, Archer Daniels Midland Company and Maersk) found that pillars of the safety profession may be myths that form barriers to SIF prevention, according to Newell. H.W. Heinrich's 80-year-old safety triangle is not predictive, for example According to H.W.Heinrich these are the ten axioms of industrial safety: The occurrence of any injury invariably results from a completed series of factors, the last one being the accident itself. The accident being due to the unsafe act of a person and/or mechanical or physical hazard Heinrich Domino Theory is an event based or sequential accident which is causation of model explain series of event that happen in a certain order which product to an injury. Heinrich Domino Theory mainly according to 5 to sequences which is social environment, fault of the person, unsafe act or condition, accident and injury NIOSH leads a national initiative called Prevention through Design (PtD) to prevent or reduce occupational injuries, illnesses, and fatalities through the inclusion of prevention considerations in all designs that impact workers. Hierarchy of controls is a PtD strategy. To learn more, visit the PtD website

  1. Herbert William Heinrich (Bennington, Vermont, October 6, 1886 June 22, 1962) was an Industrial accident prevention: a safety management approach. Forklift Operating Procedures (Powered Industrial Trucks). 47. Operating Accident prevention activities will be reinforced a systematic evaluation of ways to
  2. Heinrich's Common Cause Hypothesis: A tool for creating safety. Heinrich is among the founders of the modern safety profession, and while decades of additional experience and science have shown us that part of his work is flawed, still a great deal can be learned from his heritage. Also, he has left us at least two strong safety metaphors.
  3. Prevention: 1. The mistaken interpretation of the Heinrich Pyramid that managing less serious hazards at the bottom will effectively address higher consequence hazards at the top; 2. Collective misuse of OSHA data as the primary metric for driving and assessing safety performance; 3
  4. or injuries and, over time, to major injury. The accident pyramid proposes that for every 300 unsafe acts or near misses, 29

Examining the foundation: Were Heinrich's theories valid

Theories of accident causation. This is also true with hand tools. In the pictures above you will see two types of scissors. The first pair is a typical pair of manual scissors that rely on people to open and close them. These are still used throughout the poultry industry. The pair on the right is a pair of pneumatic powered scissors In 1969, a study of industrial accidents was undertaken by Frank E. Bird, Jr., who was then the Director of Engineering Services for the Insurance Company of North America.He was interested in the accident ratio of 1 major injury to 29 minor injuries to 300 no-injury accidents first discussed in the 1931 book, Industrial Accident Prevention by. H. W. Heinrich Condition Accident Injury For example, Heinrich postulated that the chain of events might look like the conditions outlined on this slide. According to Heinrich, natural or environmental flaws in the worker's family or life create secondary personal defects in the worker (Sara Stewart)

Accident triangle - Wikipedi

  1. BBs' primary focus on accident prevention, this approach to safety and health fails to account for, and based safety as a core principle of their occupational safety and health management programs. accident reports. according to heinrich (1931) 88% o
  2. In fact, in Analyzing System Safety Effectiveness, Petersen argues that five widely held beliefs about safety management are simply wrong: 1) Accidents are caused by unsafe acts and conditions. That idea, Petersen noted, is derived from W. H. Heinrichs Industrial Accident Prevention, first published in 1931
  3. o 6 theories, will result if the sequence of pre-contact phase causes is not interrupted. Heinrich's Do
  4. ing incident and near miss data, assessing on risk and severity, and focusing on the potential for SIF. To understand how to prevent serious injuries and fatalities, we turn . to a classic concept in workplace health and safety, Heinrich's.

The severity of an accident according to Herbert is by chance rather than design and the accident that caused it is preventable. He concluded that management ought to take responsibility for safety with the supervisor being the key person in the prevention of industrial accidents seeing as there were indirect losses incurred besides direct ones According to Heinrich, an American industrial safety pioneer, 95% of workplace accidents are caused by unsafe acts. While Heinrichemphasizes main-failure as a cause of accidents, he also simultaneous focuses on mechanical and physical hazards to be controlled by employers

Industrial accident prevention heinrich pdf

An accident causation model is a systematic method of ascertaining the causes of an accident. An accident is a complex coincidence of activities or phenomena in a single time and space. Therefore, determining the causes leading to an accident can be quite difficult, as there are so many variables to consider. Accident causation models vary from. Behaviour Based Safety. Study of human behavior is Psychology and one known barrier to good standards of health and safety is behavior of individuals. Some make mistakes unknowingly and those can be trained but many individuals realize what they are doing is wrong and yet choosing to do so. According to Heinrich, 88% of accidents were caused by. Heinrich's traditional 5 Domino Theory on accident causation is the standard model used by health and safety professionals. The theory works on the basis that, if a domino falls, it will be a matter of time before it will knock down the others next to it Accident/Incident ratio studies e.g. Heinrich's/Bird's Accident Traingle; Bird's Domino theory (immediate, underlying and root causes) Bird's Multi-causality theory; Reason's model of accident causation - Swiss Cheese Model (Active and Latent failures) The Bow Tie method (FTA, ETA

Accident causation 2-4 model (24Model) The accident causation 2-4 model (24Model) is a behavior chain that was proposed based on Heinrich's (Heinrich et al. 1980), Bird's (Bird 1974), and Reason's (Reason 1990) accident causation chains and organizational behavior theories (Tang 2015).This model illustrates how organizational factors and individual factors contribute to. According to the Paris MoU Secretariat information, it is assumed that the profile of the vessel of lowest safety and pollution prevention standard is that of a small-sized, old general cargo or reefer ship, flying the flag of a country included in the black list and either classified by a very low performance society or with unknown class

Construction Safety Flashcards Quizle

• Over the years, several theories of accident causation have evolved that attempt to explain why accidents occur. Domino Theory • H.W. Heinrich - an early pioneer of accident prevention and industrial safety • According to Heinrich, there are five factors in the sequence of events leading up to an accident By Hari Vasudevan, CEO, and RL Grubbs, Safety Manager, Think Power Solutions types of incidents. His book, Industrial Accident Prevention: A Scientific Approach indicated that there is one major accident to every 29 minor injuries, to three hundred non-injury incidents. THE HEINRICH ACCIDENT TRIANGLE His results were later reproduced in 1969 wit The underlying principle of the Work at Height Regulations is that working at height should be avoided wherever possible. This essentially means doing as much work as possible from the ground, using extending tools instead of a ladder, or lowering something to ground level before repairing it. Avoiding work at height also means avoiding work on. In this regard, safety knowledge can be viewed as accident prevention programs which may reduce accident and injury frequency at work. 1.1. The Current Study. Accidents of any form may be preventable on a site once good safety planning, management procedures, and cultural practices are rightly placed

According to many experts, no. While there are some redeeming qualities to his work, there is a lot of criticism of his reported data, safety hierarchy triangle, safety ratio, and even his basic principles. Let's examine each of these individually to see if there are any lessons we can still apply almost 100 years later. The Histor Incident [Accident] Investigations: A Guide for Employers. (2015). This guidance document provides employers with a systems approach to identifying and controlling the underlying or root causes of all incidents in order to prevent their recurrence. National Safety Council. How to conduct an incident investigation. (2014) The field of safety and health is one of growing importance and challenge, incorporating many new dimensions and responsibilities such as human factors engineering, industrial hygiene, fire prevention, the physical and behavioral sciences, product safety, and, in particular, the science of accident prevention

1. The definition for the word accident is a sudden unintentional event, which causes injury, or property damage. A. True. B. False. 2. The definition of the word behavior is a product of several interacting factors that includes drugs, fatigue, emotions, knowledge, maturity, and attitude. A Any accident prevention program that takes all ten axioms into account is more likely to be effective than a program that leaves out one or more. Heinrich's Domino Theory According to Heinrich, there are five factors in the sequence of events leading up to an accident: Ancestry and social environment - character trait Occupational safety and health specialists study past work-related illnesses and injuries to understand how to prevent future ones. More than 80 years ago, the occupational safety and health pioneer Herbert Heinrich used this approach to devise the so-called safety triangle. After questions arose about the safety triangle's validity, a National Institute for Occupational Safety and. Domino theory (heinrich 1931) International Journal of Advances in Engineering & Technology, Sept 2012. ©IJAET ISSN: 2231-1963 66Vol. 4, Issue 2, pp. 53-66 [2]. Gambatese, J. and Hinze, J., (1999) Addressing construction worker safety in the design phase: Designing for construction worker safety, Journal of Automation i

According to Heinrich on the foundation of 75,000 of on accident prevention widely applied by Europe and 980s, which it can realize the production long term mechanism .BBS principle can be induced that human safety conscience and safety habit is not innate but could be improved by training [4]. Throug The Safety Pyramid Unsafe act or mechanical or physical hazard lines up with Heinrich's third, and arguably most controversial, axiom: The unsafe acts of persons are responsible for the majority of accidents. According to Heinrich, 88 percent of accidents are caused by unsafe acts of persons and 10 percent by unsaf

Accident Prevention Manual for Industrial Operations. National Safety Council, Chicago, IL 1976. Accident Investigations and Reporting, Instruction 5102.1 Chief or Naval Operations, Department of Defense, 18 May 1977. Heinrich, H.W., Industrial Accident Prevention. New York, McGraw Hill 1936 According to Heinrich's theory, any accident can be described as the result of a chain of sequential events - like a line of dominos falling over. Based on Heinrich's domino theory, Boeing [ 2 ] established the concept of accident chain to de-scribe the process of an accident induced by a chain of real events

Herbert William Heinrich, Industrial Accident Prevention, A Scientific Approach, 1931 1 10 30 600 THE HEINRICH PYRAMID Near Misses KEY PRINCIPLES OF HUMAN & ORGANIZATIONAL PERFORMANCE 1. People are fallible, and even the best make mistakes According to percentage points of the chi square distribution table (Table 6) published in Rosner. Accumulation of accident data in chart form would make available a library of accident processes for numerous purposes such as training, design, safety regulations, etc. 3. Development and adoption of systematically organized assumptions, principles and procedures by accident investigators would elevate their activities to professional status.

Behavior Based Safety for Accidents Prevention and

OSH Answers: Accident Investigation The accident investigation process involves the following steps: Report the accident occurrence to a designated person within the organization Provide first aid and medical care to injured person(s) and prevent further injuries or damage Investigate the accident Identify the causes Report the finding The predominant principle behind the prevention proposals and/orprogramsis that mostaccidentscan be avoided if due atten-tion is given to the norms. Such principle (traditional or classical safety paradigm) has in its root the so-called ''domino theory'' (Heinrich, 1959), in which accidents are equivalent to a linea

Many models of causation have been proposed, ranging from Heinrich's domino theory to the sophisticated Management Oversight and Risk Tree (MORT). The simple model shown in Figure 1 attempts to illustrate that the causes of any incident can be grouped into five categories - task, material, environment, personnel, and management 1 Heinrich's Accident Triangle showed that, of 330 workplace accidents, 1 would lead to a major injury, 29 would lead to minor injuries, and 300 would be due to at-risk behaviours. Figure 1: Modified injury pyramid based on Heinrich's Accident Triangle 1

According to Heinrich (1980), an accident is an event that is incidental, not planned, and not be expected where there is action and reaction between the object, material, or material with humans, causing injury. Accidents that occur have causes, and causes the generally can be prevented (Soemirat, 1999) 10945 which discusses the prevention of work accidents on board and ports related to the use of PPE. If a work accident occurs, it will certainly reduce the company's performance due to the decreasing productivity of workers. Small investment with large returns, that's the message of the HSE (Health, Safet According to Heinrich's Accident Causation Theory [34] and many other popular accident causation theories [16] , besides the unsafe acts of person, the unsafe situation of hardware is another immediate cause of accidents, therefore, the safe situation of hardware, as the opposite of the unsafe situation of hardware, should also be taken as.

The Ten Basic Principles of Safety: Principle #

knowledge of and about, as well engagement in accident prevention. While safety organisational understanding of accident sequences (e.g. Heinrich 1980) or organisational contexts (e.g. Reason 1997) was relatively weak. A safety information system according to Kjellen (2000) wa Herbert William Heinrich, Industrial Accident Prevention, A Scientific Approach, 1931 1 10 30 600 THE HEINRICH PYRAMID Near Misses HOP PRINCIPLE # 5 . Learn from the mistakes of . According to percentage points of the chi square distributio development of strategies to reduce their likelihood. Following this principle, James Reason developed an acclaimed and widely-known accident causation approach, which evolved from Heinrich's et al. (1980) Domino Theory. Reason (1990) firstly developed the idea of having » tactical farp safety class As a Unit Safety Officer participating in a field training exercise or real world mission, the student will identify and understand the hazards of FARP operations, enabling him/her to safely and efficiently prepare and execute refuel and rearm operations IAW FM 10-68, 1-104, and Unit SOP's The article is a bit longer than usual and if you would prefer to download a copy for future reference then you can DOWNLOAD HERE: Understanding-the-Social-psychology-of-Risk-and-Safety-3.docx (3479 downloads) In response to a number of emails I have received and conversations I've been having (and sadly some very ignorant comments posted on LinkedIn) I thought it would be a great idea to.

www.free-safety-training.com The causes of adverse events Multiple Causation Theory According to Peterson (1978), there is not only one causes behind to accidents. There are many factors, causes and sub-causes behind every accident. Under the concept of multiple-causation, the factors, causes, sub-causes combine together i According to Heinrich, an American industrial safety pioneer, 95% of workplace accidents are caused by unsafe acts. While Heinrichemphasizes main-failure as a cause of accidents, he also simultaneous focuses on mechanical and physical hazards to be controlled by employers

: According to W.H. Heinrich (1931), who developed the so-called domino theory, 88 per cent of all accidents are caused by unsafe acts of people, ten per cent by unsafe conditions and two per cent by acts of God. He proposed a five-factor accident sequence in whic a fundamental approach in accident prevention (Goh et al., 2010; Meng, 2011; Sklet, 2004). Accident prevention depends to a large degree on lessons learned from accident investigation. What we can learn in turn reflects the different perceptions of the accident phenomenon, which in the present day are called the accident

Accident Causation Understanding Safet

The Heinrich model is now common practice in occupational safety, even though the asserted causal link cannot be conclusively esta-blished. Objective: identify potential danger sources The best accident prevention choice is, of course, to eliminate po-tential danger sources by implementing an occupational safety con Principle of bimodal functioning as a light bulb, fail, they are discarded and replaced by a new (and identical) one. Complex, technological systems work according to the same principle. Failures may, however, be intermittent - especially if complex logic (software) plays a part. (Heinrich, 1931 Industrial accident prevention. Inspectorate (PIP) in 2005-2011, in view of their prevention by means of additional safety measures applied by machinery Accident selection criterion according to the work performed. Work performed by the injured person at the accident The STEP model presented by Heinrich [6]isthesim-plest example. Since the accident is represented as. Accident models provide a concept of the characteristics of the accident, which typically show the relation between causes and effects. They explain why accidents occur, and are used as techniques for risk assessment during system development, and for post hoc accident analysis to study the causes of the occurrence of an accident and further. Manning, DP. 1971. Industrial accident-type classifications—A study of the theory and practice of accident prevention based on a computer analysis of industrial injury records. M.D. Thesis, University of Liverpool. McAfee, RB and AR Winn. 1989. The use of incentives/feedback to enhance work place safety: A critique of the literature

Theory of Accident Causes - ILO Encyclopaedi

By using the HFACS framework for accident investigation, organisations are able to identify the breakdowns within the entire system that allowed an accident to occur. HFACS can also be used proactively by analyzing historical events to identify reoccurring trends in human performance and system deficiencies A renaissance in safety and health thinking is taking place as rates for fatal and serious injuries and illnesses continue unabated. This movement is re-examining of some of the concepts that underpin the safety and health profession. How senior leaders set the tone and expectations for their organizations is seen as critical. And the valuable input of front-line operators who best understand. Heinrich already half a century ago, others authors have expanded their findings and confirmed Defining the behavioural security as the application to the industrial safety principles and methods derived of the analysis of behavior; this principle includes the performance (according to points of workers appreciation)

(PPT) Chapter 3 Incident Prevention LAME D3M0M4N

According to the research of Heinrich, DuPont Company and U.S. National Security Council, more than 80% of accidents are caused by individuals' unsafe acts. In order to eliminate unsafe acts causing mine roof accidents, 10 types of common unsafe acts were summarized and 4 kinds occur most frequently based on 40 typical roof accidents, these 4 kinds of common unsafe acts are not choose the. Heinrich's accident causation theory (1941) was summarized into two main points: (1) people are the fundamental reason behind accidents; and (2) management is responsible for the prevention of accidents (Peterson, 1982)

What is Heinrichs pyramid of accident severity

Safety-proof your home. Make sure all hallways, stairs, and paths are well lit and clear of objects such as books or shoes. Use rails and banisters when going up and down the stairs. Never place scatter rugs at the bottom or top of stairs. Tape all area rugs to the floor so they do not move when you walk on them An Accident Theory that Ties Safety and Productivity Together. By incorporating a fuller accounting of risks, the Entropy Model of accident causation demonstrates that safety and productivity are bound together. Oct 20, 2002. Risk is a concept linked to negative outcomes such as regret, loss and damage In 1931, Herbert William Heinrich, an American engineer, wrote a book titled Industrial Accident Prevention, A Scientific Approach. In the Heinrich 300-29-1 model, Heinrich suggests that for every 300 near-misses there will be 29 minor injuries and 1 major injury. Since then the methods he used to determine the relationship between near. According to Heinrich, an American industrial safety pioneer, 95% of workplace accidents are caused by unsafe acts. While Heinrich emphasizes main-failure as a cause of accidents, he also simultaneous focuses on mechanical and physical hazards to be controlled by employers

The Domino Theory - Management Platform for Human Resource

According to the Health and Safety Authority, there have been 64 workplace fatalities so far this year, mainly in the construction, fishing and farming sectors. And every year more than 20,000 non. The key to a successful prevention programme is management committed to health and safety Frank Birds pyramid is similar to that of Heinrich triangle but states that for every 341 cases 300 cases will be near misses and dangerous occurrences, 30 will be property damages and 10 minor and 1 major accident Green Chemistry Principle # 12 is known as the Safety Principle. It may be the most overlooked of the twelve principles, yet it is the logical outcome of many of the other principles. In fact, it is practically impossible to achieve the goals of Principle 12 without the implementation of at least one of the others Controls should be determined according to the Hierarchy of Control system described below. The following control elements should be utilised in the order presented and where appropriate used in conjunction. 1. Elimination ↓ 2. Substitution ↓ 3. Isolation ↓ 4. Engineering ↓ 5. Administration ↓ 6 Marine Insight focuses on providing information on various aspects of the marine world, and tries to bring forth the marvels of the blue expanse which covers a major portion of our planet Earth. Marine Insight makes a conscious effort to draw people's attention toward key maritime issues that can shape the future of the marine world and of the entire human habitat

27. According to Freeman and Heinrich, community health nursing is a developmental service. Which of the following best illustrates this statement? The community health nurse continuously develops himself personally and professionally. Health education and community organizing are necessary in providing community health services To explore the influencing factors and mutual influence mechanism of the construction safety of China's high-speed railway stations, this study takes the Hanghuang high-speed railway Fuyang station as the subject and studies 17 risk factors in 4 categories affecting construction safety based on system safety theory, and the interaction relationship and degree among the factors were analysed The aim of safety management was to prevent industrial accidents by promoting safety as part of the everyday running of business, for example by promoting training schemes, safety committees and the use of professional safety officers. 35 As described below, while these approaches were not new, they became increasingly central to tackling. response to both accident prevention and reporting. What was happening time and firmly endorsed the principles of sci- occurred. According to research compiled by the United Auto Workers, the foremost of these theo-rists was a top manager for the Travelers Insurance Company, H. W. Heinrich. Heinrich examined 12,00 Some of them are namely, the Heinrich Pyramid developed by H.W Heinrich in the 1930s and the ICAO SHELL model developed by Edwards in the 1970's. This essay will analytically look into the components of the Reasons Models and how it is effective while investigation an aircraft accident