Construction hazards and_safety_by_isti
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Transcript of Construction hazards and_safety_by_isti
- Construction Hazatds and Safety BY, Industrial Safety Training Institute (ISTI).
- Learning outcome At the end of the lecture, students should be able to: Understand the different types of existing hazards on site Comprehend the diferent types of accident measurement approach Reflect on the Swedish construction accident records Appreciate the importance for improving health & safety in construction Undertake the techniques of improving health & safety in construction Understand the existing legislative framework Understand an accident analysis if required.
- Safety is free from risk and danger. Accidents is defined as an unexpected and desirable event resulting in damage or harm. Hazards is an unsafe condition or activity, that if left uncontrolled can contribute to an accident. Risk is the assessment of probability of loss and potential amount of loss. (concise Oxford Dictionary) Definitions
- Common situation on a construction site Construction work is dynamic, diverse, and constantly changing in nature. Constantly changing job site environments and conditions Multiple contractors and subcontractors High turnover; unskilled laborers Constantly changing relationships with other work groups Diversity of work activities occurring simultaneously Construction workers are at risk of exposure to various hazards and risks that can result in injury, illness, permanent disability, or even death.
- Hazards Chemical Physical Biological Ergonomic
- Chemical Hazards Chemicals can exist in the form of dusts, fumes, fibers (solids) liquids, mists gases, vapors welding fumes spray paints cutting oil mists xylene vapor solvents Examples of chemical hazards found in construction work: asbestos lead silica cadmium carbon monoxide
- Physical Hazards Noise Vibration Temperature extremes Radiation Physical hazards are different types of energy which may be hazardous to workers.
- Biological Hazards Exposure may occur during demolition, renovation, sewer work, work on air handling systems, or other construction work from contact with contaminated or disease-carrying soil water insects (mosquitoes, ticks) bird, bat droppings animals structures
- Ergonomic Hazards Ergonomic hazards can cause painful and disabling injuries till example Musculoskeletal Disorders (MSDs) . This following situation may causes these injuries: heavy, frequent, or awkward lifting repetitive tasks awkward grips, postures using excessive force, overexertion using wrong tools for the job or using tools improperly using improperly maintained tools hand-intensive work
- Types of accident measurements Death Fatal injury (broken leg, hips, amputation) Non-fatal injury (finger cut) Occupational accidents (MSD, hearing loss) Absence from work ( >1 day, > 3 days etc) Near misses Rate per 100 000 number of injuries or causes of ill health per 100 000 employees. Working days lost days off work due to workplace injuries & work-related ill health
- Other health hazards Living conditions and welfare facilities Temporary accomodation Food Drinking water Sanitary conveniences Facility for clothing Work related mental stresses Alcoholism and drug addiction
- Personal protective clothing and eqiupment (PPE) Legal requirements Eye protection Respiratory protection Ear protection Face protection Head protection Hand protection Foot protection Body protection Fall protection
- Construction accident record for 2005 (Samuelson & Lundholm, 2006) 0 2 4 6 8 10 12 14 16 18 95 96 97 98 99 0 1 2 3 4 5 years number Occupational fatality Occupational fatality/1000 person Occupational health fatality Occupational health fatality/1000 person
- Leackage, flood 1% Landslide, fall,breaking of material 14% Fire explosion 2% Other injuries 2% Body injury due to physical lifting 17% Body injury not due to physical lifting 5% Fall of person not from height 11% Fall from height 11% Other form of loss of control 1% Loss control of material handling 10% Loss control of tools 15% Lost control of vehicle 6% Lost control of machine 5% Samuelson & Lundholm, 2006 Causes of construction accidents 2005
- ISO EU Sweden UK Malaysia ISO BS8800 Framework Directive Council Directive 89/391/EEC The Work Environment Act (1997:1160) The Health and Safety at Work Act 1974 The Health and Safety at Work Act 1994 The Construction (Design and Management) Regulations 1994 Existing health & safety legislations in practice
- Reasons and benefits to improve health and safety in construction Responsibility; Economic reasons; Impact of safety on overall performance; Contractors performance; Control of accident causes.
- Responsibility Safety is everyones responsibility. It is a moral and legal obligation of employers to provide a safe working place and of employees to work safely. Employers duty of care to employees as covering the following areas: safe system of work; a safe place of work; plant and machinery that is safe to use; competent supervision and/or suitable training; and care in the selection of fellow employees.
- Costs of accidents direct costs and indirect costs
- Direct costs The direct costs are insurance. These include medical costs and others workers compensation insurance benefits as well as liability and property-damage insurance. Indirect costs Below are the lists of indirect costs: Transportation costs include the cost of emergency transportation, together with the cost of other personnel that were necessary to get to the injured worker to proper medical facilities Wages paid to injured worker for time not worked include all the time in which the worker was not actually doing his or her job and for the wages paid.
- Cost incurred because of delays which resulted from accident other crews affected or delayed; equipment idled; duration of project lengthened; plus all wages, rental fees and indirect supervision costs that occurred as a result of the accident. Costs of overtime necessitated by accidents overtime occurred because of the accidents Loss of efficiency of crew decrease of crew efficiency due to low morale or reshuffling that might occur to replace an injured worker. Cost to break in and/or teach replacement worker hiring new worker would include training and orientation Costs for clean-up, repair or replacement and stand-by costs normally accidents involves spillage, cave-ins vehicle damage, material wastage or site clean-up
- Extra wage costs, slower returned worker normally when a worker return to the job site and is partially and/or temporarily disabled, the worker is probably working at a different, less demanding job or less efficient at the former job. Costs to reschedule work include time spent to review and reschedule the project due to investigations or project being temporarily suspended by the authorities. Costs of wages for supervision as a result of the accidents include all time spent on the accident and its results: caring for the workers medical treatment, investigation, completing forms, disseminating information, visiting the worker, planning to prevent recurrence, appearance in court
- Costs for safety and clerical personnel as a result of the accident typing, investigating, forwarding forms, time with press, etc. OSHA and civil fines paying fines. Cost of legal assistance engaging a lawyer to settle the accident claims. Other costs any other cost that were incurred because of the accidents. The average ratio of indirect costs to direct costs is 4:1.
- Impact of overall performance Time Budget Accident statistics Absentism Low morale
- Contractors performance Studies have proved that there is an adverse effect on a contractors reputation and unfavourable image for the client when the project suffers high accident rates.
- Control of accident causes Safety performance measurement enables behaviours and conditions to be identified that have the greatest potential in contributing to an accident. It also forms a basis to predict future accident problems and enables management to control the causes of accidents on site and establish long-term accident control. These measurement techniques provide continuous information concerning changes in the safety state within an organisation in operation.