Safety and Health in Industry: A Handbook
By A M Sarma
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· Presents the material in a simple and lucid style for easy understanding of a multi-dimensional subject
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· Immense use to students of management and engineering and also professionals working in the field of industrial safety
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Safety and Health in Industry - A M Sarma
INDEX
Chapter 1
Workplace Safety and Health An Overview
Safety is that profession which is concerned with the scientific analysis of the causes of accidental deaths and injuries in a given environment and their elimination or reduction. In the industrialised areas of the world, accidents now cause more deaths than all infectious diseases and more than any single illness, except those related to cancer and heart disease.
The most path-breaking advances in safety during the last 40 or 50 years have been made in industry. The initial stimulus for the industrial safety movement came from the largest industries, in which severe injuries and loss of life were common occurrences. In the 19th century, the safety of an employee was generally considered to be his own responsibility. The liability’ of the employer for accidental injuries depended on certain common-law doctrines that operated against the employee. However, an important segment of progressive industrial management saw the fallacies in these concepts and felt that management should do more for the safety of the workers.
The social progress of the times was reflected in the development of safety movement which was given impetus by workmen’s compensation laws enacted in most of the industrialised countries in the late 19th and early 20th centuries. A new concept was inherent in these laws, namely that the employer should accept primary responsibility for injuries at work, even though they could not be attributed to any one person or cause. Industry became legally liable to pay compensation for personal injuries to its workers, and survivors benefits to dependants.
The three specialised skills-safety engineering, industrial hygiene, and industrial medicine-were developed as methods of preventing injury to the worker and for reducing costs. The initial emphasis in safety engineering was on the installation of guards and protective devices, which led to a sudden, sharp decline in machine accidents. Industrial medicine has concentrated on controlling environmental hazards i.e., the inhalation of toxic gases, fumes, and such other harmful effluents. Industrial hygiene has focused on minimising the consequences of injury and disease and with restoring disabled workers to gainfid employment.
From an emphasis on mechanical guarding and education of workers in safety, experience tended to shift die focus to an application of basic safety engineering principles in die design of machinery, plant layout, and working methods. More emphasis was placed on the role of supervisory personnel, and safety was recognised as an integral part of normal operating procedure. The role of personal errors and accident proneness had been dealt with by functional job analysis. Variables relating to the health of die worker had been stressed, and working methods were modified to ensure a safe and optimum working environment as far as employee health was concerned.
These developments were a part of the movement for setting up of various organisations in different countries to perfonn specialised safety functions. Safety principles have been incorporated into engineering courses, and departments of safety engineering have been established in engineering schools and colleges. The most important directing force for accident prevention, however, has remained within industry itself. Although many outside agencies have contributed to safety performance, the direct and immediate responsibility for the application of safety management principles, employee education, and on-the-job safety enforcement rested upon the individual employer. In most instances, laws represented only minimal requirements and are way behind the goal of ultimate objectives.
Safety Management as a Profession
The field of safety management has not developed fully as a unified, specific discipline, and its practitioners have operated under a wide variety of position titles, job descriptions, responsibilities, and reporting levels in industry and the loss-prevention activities of insurance companies. There has also been little uniformity in the development of educational programmes in technical institutes and universities for the specialised training needed for this field.
The most recent trends in occupational safety and health include increased emphasis on prevention by the anticipation of hazard potentials; changing legal concepts concerning product liability and negligent design or manufacture; developing emphasis on consumer protection; and the development of national and international legislation and controls.
Four general areas that have been identified as the major functions carried out by the safety engineer/safcty professional are:
1. identification and appraisal of accident-producing conditions and practices;
2. development of accident and loss-control methods, procedures and programmes;
3. communication of accident and loss-control information to those directly involved; and
4. measurement and evaluation of the accident and loss-control systems, and the modifications needed to obtain optimum results.
The safety professional contributes to the prevention of accidents by using his specialised knowledge of accident causation and control by 1. seeking to eliminate hazards and causation factors, 2. designing machines and procedures to reduce the hazards, and 3. minimising their effects by prescribing specialised equipment to prevent injury or reduce the severity.
One of the most important functions of the safety professional is to identify hazards in the working area and to evaluate the loss-producing aspects of a given method or operational system. In the past, a great deal of attention has been devoted to analysing the existing hazards and products, while the newer methods involve not only learning from accidents that have occurred but also emphasising on the need for advance analysis of accident potential and the prevention of accidents prior to their occurrence.
Traditional Safety Management
The form of safety management followed by most of the industries, called as ‘traditional safety management’, has the following characteristics:
1. Top down communication
2. Minimal employee participation
3. Dependence on discipline to influence safety behaviour
4. Centred on technical requirements aiming at short-term results
5. Use of safety techniques after accident and injury
6. Lack of integration of safety activities with other functions in the organisation.
7. Responsibility of safety officials for safety, but does not have the authority to make changes.
Five Steps to Managing Safety
• Know and understand your safety policy and procedures.
• Plan ways to reduce risk and remove hazards.
• Organise people and resources to create a safe working environment and safe systems of work.
• Measure your safety record by statistics and discussion with your staff.
• Investigate accidents fully.
Accident Frequency and Severity Rates
Most statistical analysis of accidents are based on either frequency or severity. The frequency rate indicates how many injuries are occurring in relation to the number of man-hours worked, and the severity rate indicates how serious those injuries are in tenns of days lost in relation to hours of exposure. The former has been most widely used and can be most quickly and easily computed. It does not, however, indicate the seriousness of an accident, since it merely gives the rate at which accidents are occurring. The severity rate was developed to meet this need and to give an expression of the total time lost per million man-hours of exposure. Other composite indexes usually involve weighted averages of some type, obtained by multiplying the severity rate by ten and adding the frequency rate.
The safety professional is concerned with reducing both the frequency with which accidents occur and the frequency with which they threaten. The frequency and severity rates vary widely from one industry to another. Certain industries, such as communications, have low-frequency and low-severity rates; mining and lumbering are at the opposite extreme. These differences reflect not only the inherent dangers in an industry but also efficiency of the safety programme.
Safety Analysis
One widely used analysis of the circumstances of accidents include the following:
1. identification and location of the materials, machines, and tools most frequently involved in accidents and the jobs most likely to produce injuries;
2. location of the departments and occupations involved;
3. disclosure of the unsafe practices, which may necessitate retraining or shifting of employees; and
4. study of the role of supervisors, and provision of information about the principal hazards.
Other signicant factors include the type of physical injury incurred; the source of the injury in relation to the object, substance or motion that inflicted it; the specific part of the material or agency that was hazardous and finally, the unsafe act that took place, presumably in violation of commonly accepted safety practice. Other aspects include age, sex, occupation, and type of work being performed.
All possible faults in equipment and in the work areas in industry, as well as the capacities of the operator, should be subjected to an advance analysis designed to prevent accidents. If defects are present, it is only a matter of time before some operator fails
and has an accident. Advance analysis assumes the following:
1. An operational job analysis that should include a survey of the nature of the task, the work surroundings, the location of controls and instruments, and the way the operator performs his duties.
2. A functional concept of accidents
i.e. anticipation of the errors that may occur while the operator is working at the machine.
3. An assumption of human limitations.
One method of identifying unsafe conditions involves selecting a random sample of workers from various portions of the plant or population, exposed to various hazards. An interviewer questions the workers, asking them to describe near-miss safety errors they have made in the past, or unsafe conditions they have observed. The data are classified into hazard categories to ascertain factors which have contributed to an actual or potential loss-producing event.
Systems Safety Engineering
In recent years, a great deal of attention has been devoted to systems safety engineering
. In brief, the primary objective of systems safety engineering is the reduction or elimination of all hazardous consequences of equipment operation in an industrial plant or similar large man-machine complex. It characteristically involves a systematic application of special analytical techniques, derived criteria, evaluation methodology, and management skills. Since it emphasises prevention rather than correction of problems, particular attention is to be placed upon early engineering design and procedural analysis. It has to take into consideration all aspects i.e. planning, design, development, fabrication, test, installation, maintenance, operation, and overall evaluation of man-machine systems.
Accidents result from deficiencies in human operation, defects in tools and mechanical equipment, and a variety of environmental influences. An accident may include mechanical or electrical failure, defective materials, and such environmental conditions as extreme heat or noise levels inhibiting inter-communication. Human failure may derive from such factors as distraction, fatigue, worry, improper attitude, lack of skill, and carelessness.
Design failures and human limitations : In many instances failures in the designing of equipment are so subtle that those responsible for analysing and reporting accidents are not aware of them. It is so because the designers of equipment are unaware of human limitations.
In order to improve the ease, efficiency, and safety of operating all types of equipment in shops and hangars, consideration has to be given to layout of working areas. Additional factors influencing the efficiency and safety of workers relate to the physical variables in the environment. Some of these include temperature, humidity, ventilation, noise, and vibration. Extremes of any of the factors result in discomfort, lowered efficiency, and increased accident risk.
Safeguarding machinery in working areas: Tire basic principles of safeguarding continue to be of great importance, however, in many industrial operations. The primary purpose of machine guarding is to prevent injury from direct contact with moving parts, and from mechanical or electrical failures in the equipment, and from predictable human errors or failures. The principles of guarding are also important in relation to plant layout and the movement of men and materials.
Safety principles in materials handling: Prevention of unsafe work practices, such as improper lifting, carrying too heavy a load, incorrect gripping is still an important safety function. Many injuries can be avoided by proper design of the work station or of the physical activities involved. One of the most commonly reported injuries is to the back and spinal column. Manual handling of materials is the cause of a large percentage of all fatal injuries and of permanent and temporary disabilities.
Occupational Hazards
Electrical hazards: Many accidents are caused by use of switches and items improperly selected for the specific purpose. In most countries, independent testing laboratories test and approve electrical equipment for use in industry and in the home. Such laboratories test for shock and fire hazards and may also evaluate radiation and heat hazards.
Chemical hazards: Modem chemical plants are designed and constructed to provide protection against chemicals. Many common industrial chemicals involve toxic and fire hazards. Some of the chemical substances used may be poisonous or harmful, corrosive, or combustible and explosive. The safety engineer is concerned with the identification of exposures to chemical agents and how this exposure can be prevented. In industry, toxic materials are most commonly absorbed either through the respiratory system, or through the skin, or through the gastro-intestinal track. Recommended practices have been developed for the storage, transport, and handling of hazardous and flammable materials.
Radiation hazards: Radiation is emitted from either the atom’s unstable nucleus or its unstable orbital area. The problem of greatest concern to the safety specialist is the alteration of cells in the body induced by radioactive exposure. Radioactive sources increasingly are being used in production processes. The safety specialist in cooperation with the company medical department has to supervise the handling and storage of radioactive materials, the disposal of residue and wastes, and the proper shielding of new installations. Comprehensive regulations covering such activities have been developed in each country.
Personal protective equipment' A wide variety of devices have been developed for protection of exposed or vulnerable parts of the body against many specific hazards. Examples of protective devices include safety helmets, face shields, safety belts, safety goggles, safety gloves, and safety shoes. If many injuries involve the eyes, safety goggles may be required, or if they are already provided, their use may be enforced when working at certain jobs. Safety gloves are to be used to protect fingers and hands from injuries. Safety shoes have been developed for protection in a wide variety of situations.
A Systems Approach to Safety and Health
Effective safety management considers the type of safety problems, accidents, employees and technology in the organisational setting. Further, the systems approach to safety recognises the importance of the human element in safety.
Any comprehensive and systematic approach to safety begins with the organisational commitment. This effort should be co-ordinated from the top to involve all members of the organisation and be reflected in their actions and work. Once a commitment is made to organisational safety, planning efforts must be co-ordinated, with duties assigned to supervisors, managers, safety specialists, and personnel specialists. The focus of any systematic approach to safety is the continued diligence of workers, managers, and other personnel.
Basic principles of accident prevention are:
1. An unsafe act, an unsafe condition, an accident - all these are symptoms of something wrong in the management system.
2. Certain circumstances of severe injuries can be identified and controlled.
3. Safety should be managed like any other company function.
4. Management should direct safety action by setting achievable goals by planning, organising and controlling.
5. The key to effective line safety performance is management procedures that fix accountability.
6. The function of safety is to locate and define the actual errors that allow accidents to occur.
Involvement of employees in safety is done through the use of safety committees. These committees are often composed of workers of different levels and from a variety of departments. At least one member of the committee is usually from the personnel unit.
A safety committee generally has a regular scheduled meeting, has specific responsibilities for conducting safety reviews, and makes recommendations for changes necessary to avoid future accidents. A safety programme includes a set of safety rules. Specific rules are made in order to protect employees from possible hazardous working conditions. The six basic requirements when developing safety rules are:
1. They should be in the written form.
2. They should be practical.
3. They should highlight an unsafe act or conditions.
4. They should be limited to safety matters only.
5. They should assist in implementing safety rules.
6. They should be adopted and strictly enforced.
Every accident at the workplace needs investigation. An accident investigation is a methodical effort to collect and interpret facts. It is a systematic look at the nature and extent of the accident and loss involved. It is an enquiry as to how and why the accident occurred; a consideration of what could be done to prevent similar accidents. Six questions that can be applied to accident investigation are:
* Who was injured?
* Where did the accident happen?
* When did the accident occur?
* What were the contributing and immediate causes of the accident?
* How can a similar type of accident be prevented?
Safety education and training
Safety education for all levels of management and for employees is a vital ingredient for any successful safety programme. Top and middle management require education in the fundamentals of safety and the need for an effective accident prevention programme. The supervisors must understand their key role in the safety effort, namely, that they are primarily responsible for preventing accidents. They must conduct safety training programmes for their employees who are directly under their supervision. In addition to safety training; periodical safety meetings are to be organised. Among the topics that may be covered are the following:
How to prevent accidents, importance of good housekeeping, handling materials safely, first aid, machine hazards, fire prevention, and protecting oneself.
One way to encourage work place safety is to involve all employees at various times in safety training sessions and at committee meetings. In addition to safety training, continuous communication programmes to develop safety consciousness are necessary. Posting safety policies and rules is part of this effort. Contests, incentives, posters, bulletin boards are all means through which employers can heighten safety awareness.
A short outline of information to be included in designing the training format:
• Purpose of the specific training and safety programme
• Company policy
• Responsibilities for the administration of the programme
• Hazards and their effects
• Safe behaviours
• Specific hazard controls - engineering, administrative, training and supervision controls
• Procedures for reporting uncontrolled hazards
• Emergency procedures and preparedness
Safety philosophy of a company
• Safety is not a style statement; but an evolving science, to be meticulously practiced by every team member.
• Benchmark company’s operations for meeting exacting global standards; this should be reflected in all its units.
• Create proactive safety philosophy with multiple safety levels at all operational units.
• Provide extensive training programmes ensuring information dissemination and 24 * 7 preventive safety measures.
• Prepare an action plan in consultation with E.I. DuPont India Private Limited to meet global safety standards and create a world-class safety culture in the company.
• Change the culture by providing safety training to employees and instil in them the importance of safety.
• Reorganise the organisational structure by installing safety committees and sub-committees and involving the senior management in the structure to infuse the importance of health and safety.
Safety - Whose Responsibility?
Safety is primarily the responsibility of the management. This responsibility should rest on the shoulders of all cadres of management, such as plant manager, production manager, chief engineer, personnel manager, maintenance engineer, individual foreman, safety officer or director.
Even organisation should formulate and implement a safety policy. The procedure to be adopted naturally depends upon the size of a company, the number of plants it operates, the nature of the industry in which it is engaged, the production technology it uses, and the attitude of the top management. After it has spelt out its safety policy, a company should establish a safety programme, the primary goals of which should be to reduce the number of hazardous factors which arc likely to cause accidents, and to develop safe working habits among its employees.
While management has the responsibility to provide safe working conditions for employees, supervisors must insist on safe work practices in the workplace. Safety is every one’s business. However, the supervisor is in a better position to spot safety hazards and to make sure that the work is done in a safe manner by each and every person on the job.
In a nutshell, the management’s responsibility towards health and safety⁷ will be to:
• contribute to eliminating the hazard at source through improving the system of work.
• isolate hazardous processes and substances so that workers do not come into contact with them.
• ensure that suitable items of protective equipment and clothing are used and worn.
• train your workers on how to avoid risks to health.
• maintain plant and equipment to eliminate the possibility of harmful emissions and injuries to people at work.
• keep premises and machinery clean and free from toxic substances.
Safety audit' The safe operation of industrial plants is the responsibility of the top executives. To effectively discharge this responsibility, there is a need for laying down a broad safety policy as well as a comprehensive programme to ensure its implementation. Thereafter, it is important for the senior management to review the performance of the safety activities and programmes of the company at periodical intervals. Safety audit is a usefill technique to undertake a systematic critical appraisal of the effectiveness of a company’s safety programme. Such a periodic review provides an independent assessment of the correctness of the basic direction as well as identifies the specific areas for action to improve the programme.
Safety audit is a tool for ensuring that the plant operation and maintenance procedures match the design intent and standards. It keeps operating personnel alert to the process hazards; reviews operating procedures for necessary revisions: seeks to identify equipment or process changes that could have introduced new hazards; initiates application of new technology to existing hazards; and reviews the adequacy of maintenance and safety inspections.
Periodic safety audits should be conducted to determine what types and categories of accidents occur in the organisation. The following questions should be asked in a safety audit:
1. Was the incident folly investigated?
2. Was the data used to provide additional safety training to the injured employee, or to all employees where appropriate?
3. Did the investigation help eliminate hazards, provide personal protective equipment?
4. Is a safety awareness campaign planned for the coming year? What is the nature of the campaign?
Accident reports and records-. Reports and records of accidents should be maintained by an organisation in detail and should contain the following items.
• The total number of employees in the unit who are exposed to different types of accidents.
• The severity of the accident - whether it resulted in a broken bone, a deep cut - and the time that was lost as a result of it.
• The kind of work or occupation in which the employee was engaged.
• The date, time and day, and the shift during which the accident occurred.
• The total number of years during which the employee was engaged on that particular job when the accident occurred.
• Personal data, including the age and health of the injured employee.
• The immediate cause of the accident - whether it was the result of a malfunctioning of a machine, or whether the employee failed to use the safety devices provided for the purpose of preventing accidents, and so on.
Health Promotion
Health has been defined by WHO as a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity. Health promotion emphasis foe positive dimensions of health. Health promotion is a mediating strategy between people and their environments combining personal choice with social responsibility for health to create a healthier future.
The scope of health promotion in foe workplace is potentially very large and intervention programmes can be designed to cover many subjects related to lifestyle such as exercises, healthy eating, and the management of stress. Health promotion among employees at the work place should be an integral element of a company's business strategy. The reason is that a healthy worker is a productive worker. Moreover improvements in employee health result in better work attitudes, higher morale and job satisfaction, lower employee turnover and reduced absenteeism.
Health promotion focuses on prevention rather than treatment or cure. Hence, the health programme in an organisation is normally planned around improvement and prevention of controllable risk factors such as smoking, obesity, high level of cholesterol, stress, hypertension, and low level of physical fitness which are responsible for many major diseases. The industrial health programme of many progressive organisations takes positive steps to maintain good employee health off the job as well as on the job. Some organisations have also established programmes in the field of mental health.
SUMMARY
• Accidents are the result of unsafe acts, unsafe conditions, or a combination of both. It is generally agreed that unsafe personal acts cause the bulk of organisational accidents.
• Organisational health hazards include all toxic substances found in the work environments that may be hazardous to employee health.
• Accident frequency and accident severity are the two most widely-accepted methods for measuring an organisation's safety record.
• Organisational interest in health and safety is influenced by social values and economic considerations and legal compulsions.
• Organisational efforts to improve safety and health usually begins with a company safety policy.
• Three general areas of activities in this regard are investigating, reducing risks at the workplace, and monitoring the safety efforts through reporting and follow-up.
• Related safety techniques include careful selection of employees, safety research, accident investigation and analysis, safety committees, protective equipment, and safety training and communication.
• Managing health and safety through legislation, administrative reorganisation, and most importantly, the education and reorientation of the attitudes of industrial community and general public, is a great challenge to be faced by all concerned.
DISCUSSION QUESTIONS
1. Why is safety management regarded as a profession?
2. Accidents result from deficiencies in human operation, defects in tools and mechanical equipment, and a variety of environmental influences. Elucidate.
CASE
The Hindustan Glass Works, a manufacturer of glassware with 900 employees, has had the following injury record for the past three years. The earliest year is shown first: injuries involving days away from work is 44, 53, 47. In the previous year, one worker suffered permanent disablement to bums: and another lost four fingers on his right hand.
The company employs a full-time safety manager and has a safety committee. There is a relatively strong union affiliated to a national organisation.
The union and management are in the midst of somewhat bitter collective bargaining. The union representatives in the third day of negotiation have introduced a demand that the union be given equal authority with management in all aspects of safety. They maintain that working conditions are not safe enough and so the union should be given authority to set minimum safety standards, to stop production when these are not complied with, and to co-opt as an equal partner with the present safety committee in inspecting and determining safety violation and proposing remedial action.
Question
1. What do you think the management representatives should do? Should this union demand be granted?
Chapter 2
Accidents and their Prevention
All safety work revolves around and stems from those ubiquitous events called an accident. But what is an accident? The dictionary defines an accident as an undesirable or unfortunate happening; casualty; mishap and anything that happens unexpectedly without plan, or by chance. Thus, it may be defined as an unexpected, unplanned, uncontrolled occurrence. It is doubtful that any single definition can be devised that would cover all types of events that could be called accidents
. The psychologists would focus on the so-called behavioural accidents - those unintentional acts such as forgetting an appointment, losing things, or making a wrong turn. The industrial hygienist would likely view occupational disease, dermatitis, silicosis, and so on as the consequence of a series of recurring events or accidents.
Accidents disrupt the normal functions of a person or persons and causes injury or near-injury. During an accident, a person’s body comes into contact with or is exposed to some object, other person, or substance, which is injurious; or the movement of a person causes injury or creates the probability of injury.
Accidents and injuries are not the same. An accident is any occurrence that interrupts or interferes with the orderly progress of the activity in question. For instance, a hoisting chain many break, dropping a load of steel bars to the floor. This is an accident, but not an injury. An injury
may be defined as a harmful condition sustained by the body as the result of an accident. It can take the form of an abrasion, a bmise, a laceration, a fracture, a foreign object in the body, a puncture wound, a bum, or an electrical shock. Injury is the consequence of an accident, but many noinjury
accidents also occur. Although psychologists are concerned with accidents that may or may not result in injury, they generally pay more attention to those accidents involving injuries.
There is a possibility of accident in every sphere of human life, at home, whilst travelling, at play and at work. The victims of an accident may not be directly involved in the activity which gives rise to it - they may be nearby workers, bystanders orthose living in the vicinity.
Many countries collect data on accidents at work, during travel or in the home. It is often obligatory to notify certain categories of accidents (e.g., boiler explosions or crane failures that cause no injury, or accidents that cause injury of particular severity (e.g., prevent a person from doing his normal job for more than three days). The number of notified accidents causing injury can often be compared with the number of workers engaged in a particular activity to produce a frequency rate (e.g., number of notified accidents where 1.00.000 workers or working shifts) and so enable more hazardous occupations and activities to be identified and priorities for preventive action accessed. Due to differences in compiling accident statistics in various countries, international comparisons are not generally valid.
Occupational accident refers to any organic or functional injury or damage to the body, limbs or health, due to external, sudden and violent cause occurring during work or total, or partial, permanent or temporary incapacity for work.
The ILO's Employment Injury Benefits Recommendations, 1964 (No. 121) sums up the generally accepted definition of an industrial accident as follow s:
(a) accidents, regardless of their cause, sustain during w orking hours at or near the place of work or at any place where w ould not have been except for his employment;
(b) accidents sustain within reasonable periods before and after w orking hours in connection w ith transporting, cleaning, preparing, securing, conserving, storing and packing work tools or clothes;
(c) accidents sustained while on the direct way between the place of w ork and
The Anatomy of an Accident
The common agencies of industrial accidents are:
1. Machines, pumps, prime movers
2. Elevators and hoisting apparatus
3. Conveyors
4. Boilers, pipe and pressure apparatus
5. Vehicles
6. Transmission apparatus
7. Electrical apparatus and tools
8. Hand tools
9. Chemicals
10. Other materials
11. Other working surfaces.
There is an accident potential in almost every situation. However, before any accident can actually happen, two sets of factors-those in the environment and those in the individual-must be brought together. The identification and evaluation of each of the many components in the anatomy of an accident is of paramount importance. A detailed outline of these four components is as follows:
1. The accident
A. Fall
B. Slip
C. Slide
D. Collision
E. Being caught in or between
F. Eruption or explosion
G. Bum.
2. Results of the Accident
A. Annoyance
B. Production delays
C. Reduced quality
D. Spoilage
E. Property damage
F. Minor injuries
G. Disabling injuries
H. Fatality.
3. Immediate causes of accidents
A. Unsafe actions
B. Unsafe conditions
4. Contributing causes of accidents:
1. Inadequate codes or standards.
2. Failure by management to enforce safety rules and regulations.
3. Faulty design or lack of maintenance.
4. Inadequate personal protective equipment.
5. Lack of proper inspection and maintenance.
6. Failure on the part of the supervisor to improve safety standards.
7. Employees’ lack of safety awareness and training.
8. Lack of emotional stability and temperament.
9. Poor physical and mental conditions of worker like fatigue, deafness, poor eyesight, improper attitude, and so on.
For a complete understanding of the anatomy of an accident, a full knowledge of the contributing and immediate causes of accidents is essential. When an accident does occur, it is an indication that something has gone wrong. Somewhere along the line someone has not done a good job of accident prevention, and unsafe acts and conditions have been tolerated. The lack of safety awareness is a significant factor in accident causation.
The accident control steps are the following:
1. Supervisor safety perfonnance
A. Job-hazard analysis
B. Enforcement of safety mles
C. Adequate safety knowledge
D. Promotion of employee participation in safety
E. Proper job placement
F. Development of safe working conditions.
2. Mental condition of person
A. Regular safety contacts by supervisor
B. Adequate safety indoctrination and on-the-job safety training
C. Safety promotions and publicity
D. Employee participation in safety programme
E. Regularly scheduled safety meetings
F. Adequate supervisor-employee communication on all matters concerning safety of the employee.
3. Physical condition of person
A. Preplaccment physical examinations
B. Periodic rc-examinations
C. Proper job placement
D. Adequate medical facilities
E. Careful examination of physical condition of worker on all transfers and changes in job
F. Recognition of the physical limitations of workers new to a job, especially if heavy work is involved.
Causes of Accidents
In every sphere of human activity there is the possibility of an accident, and work is no exception. Industrial accidents are the end-products of unsafe acts and unsafe conditions of work. However, accidents are preventable -they don’t just happen. They usually occur as a result of the combination of a number of factors of which the three main ones are technical equipment, the working environment, and the worker. For e.g., safety equipment may be lacking in the factory or machinery may have been poorly designed with inadequate safety devices. The working environment may be so noisy that it is impossible to hear safety signals. Also, the workers themselves may be a contributory factor in that they may not have received adequate training or may have little experience of the task.
Environmental Causes
• improper guarding
• substances or equipment defective through use or abuse
• substances or equipment defective through design or construction
• unsafe procedure
• unsafe housekeeping
• improper illumination
• improper ventilation
• improper dress or apparel.
Behavioural Causes
• improper attitude
• lack of knowledge or skill
• physical or mental defect.
People who might be considered as accident prone include those who face difficulties, permanent or short-lived, such as:
1. A lack of aptitude for the work.
2. A lack of certain skills and coordination.
3. A possible literacy problem.
4. An attitude or personality problem.
5. Alcohol or drug problems.
6. Personal life stresses.
There are unlimited number of hazards that can be found in almost any workplace. There are obvious unsafe working conditions, such as unguarded machinery, slippery floors or inadequate fire precautions, but there are also a number of categories of insidious hazards including:
• chemical hazards, arising from liquids, solids, dusts, fumes, vapours and gases:
• physical hazards, such as noise, vibration, unsatisfactory lighting, radiation and extreme temperatures;
• biological hazards, such as bacteria, viruses, infectious waste and infestations:
• psychological hazards, resulting from stress and strain:
• hazards associated with the non-application of ergonomic principles, for example badly designed machinery, mechanical devices and tools used by workers, improper seating and workstation design, or poorly designed work practices.
Workers do not create hazards - in many cases the hazards are built into the workplace. This means that the solution is to remove the hazards, not to try to get workers to adapt to unsafe conditions. The most effective accident and disease prevention begins when work processes are still in the design stage, when safe conditions can be built into the work process.
All workplace hazards can be controlled by a variety of methods. The goal of controlling hazards is to prevent workers from being exposed to occupational hazards. Some methods of hazard control are more efficient than others, but a combination of methods usually provides a safer workplace than relying on only one method.
Hazard control programme includes the following components: 1. hazard identification, 2. ranking hazards by risks, 3. establishing preventive and control measures, 4. monitoring, and 5. evaluating programme effectiveness and feedback.
Hazard control is not the responsibility of just one individual or one department. It is the collaborative effort of all the departments associated with safety management. The activity of hazard control is a continuing and ongoing one.
Researchers in different disciplines address the problem of industrial accidents from many perspectives, but all concerned with reducing frequency and severity. Industrial psychologists focus on individual characteristics associated with accidents and investigate traditional approaches (personnel selection, work design, and training) in accident reduction. Industrial hygienists view occupational diseases as consequences of recurring events or accidents. Safety engineers see accidents as results of a sequence of acts or events with undesirable consequences, such as personal injury, property damage, or work interruption.
Theories on Accident Causation
Domino Theory: One of the most