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(Hazard Identification and
H.I.R.A. (Hazard Identification and Risk Assessment as per OHSAS 18001)
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Safety: Safety is a state in which the RISK or HARM to persons or damage to property is limited to a acceptable level. Hazard: Source, situation, or act with a potential for harm in terms of human injury or ill health or a combination of these. Hazard Identification: Process of recognizing that a hazard exists and defining its characteristic
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Risk: Combination of the likelihood of an occurrence of a hazardous event or exposure(s) and the severity of injury or ill health that can be caused by the event or exposure(s) Risk assessment: Process of evaluating the risk (s) arising from a hazard(s) taking into account the adequacy of existing controls, and deciding whether or not the risk(s) is acceptable.
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The Crocodile principle
Identify the hazard and risk
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The Crocodile principle
Evaluate the risk
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The Crocodile principle
Eliminate the risk
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The Crocodile principle
Find an alternative
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The Crocodile principle
Isolate the risk
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The Crocodile principle
Personal protective clothing
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The Crocodile principle
If nothing works …get the .. out of there
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The procedure for hazard identification and risk assessment should take into account:
Routine and non-routine activities; Activities of all persons having access to workplace (including contactors and visitors) Human behavior, capabilities and other human factors Hazards originating outside the workplace Hazards created in the vicinity of the workplace by work-related activities (environmental aspects) Infrastructure, equipment and materials at the workplace Changes or proposed changes in the organization, its activities, or materials; Modification to Safety Management system and its impacts on operations, processes, and activities. Applicable legal obligations relating to risk assessment Design of work areas, processes, installations, machinery, operating procedure, etc.
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Overview of the Hazard Identification and Risk Assessment Process: -
Develop Methodology Identify Hazards Monitor and Review Implement Controls Manage change Assess Risks Determine Controls Overview of the Hazard Identification and Risk Assessment Process: -
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Procedure for HIRA should take account of the following:
Hazards Risks Controls Management of Change Ongoing review
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Hazard Identification:
Hazard Identification should be proactively determined from – All sources (e.g. Moving machinery, radiation, energy sources etc.) All situations (e.g. Working at height, working in excavation etc.) All acts (e.g. Manual lifting etc.) Hazard Identification should consider different types of Hazards such as- Physical (e.g. slippery floor, falling objects, caught between etc) Chemical (e.g. inhalation, absorption thru skin, ingestion of chemical vapors, gases, particles) Biological (e.g. biological allergens or pathogens – bacteria or viruses – may be inhaled, transmitted thru contacts etc.) Psychosocial (anxiety, fatigue, depression due to excessive workload, lack of communication etc.)
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H.I. methods Reactive Proactive 1)Accident Investigation 2) Accident Analysis 1)Plant Safety Inspection 2) Critical Incident Technique 3) Incident Recall Technique 4) Critical Incident Technique 5) Thee question meeting 6) Failure Mode Effect Analysis (FMEA)
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7)Hazard and Operability (HAZOP) Studies
8)Safety survey, 9)Safety tour, 10)Safety Sampling 11)Fault tree analysis - FTA 12)Event tree analysis - ETA 13)Job Safety Analysis - ISA 14)Safety Audit 15)Hazard Indices 16)What if analysis 17)Check lists 18)Maximum credible accident analysis 19)Preliminary Hazard analysis
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Sources of Information/ inputs to be considered during Hazard Identification Process
Legal and other requirements OHS Policy Monitoring data Occupational exposure and health assessment Records of incidents Audit report, assessments and review Input from employee Information from other management system (quality management, environment management etc.) Process review and improvement activities in the workplace Information on best practices and/ or typical hazards in similar organization incidents report from the similar organizations
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Information on the facility, processes and activities of the organization, including the following –
- Site plan, traffic plans (pedestrian walkways, vehicle routing), workplace design Process flowcharts Operations manuals Inventory of hazardous materials (raw materials, chemicals, wastes, products, sub- products), Equipment specification product specification, material safety data sheet, toxicology etc. Routine activities Non- routine activities such as – - Equipment cleaning, temporary process modification, non- scheduled maintenance, plant/ equipment start up- shut down, off-site visits, refurbishment, extreme weather conditions, utility disruptions, emergency situations etc.
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All persons having access to the site ( customers, visitors, service contractors, delivery personnel, plus employees ) – - hazards from their activities - their degree of familiarity with the site - their behavior Human factor: consider the following and their interaction – - the nature of job (workplace layout, operator information, physical work, work patterns) - the environment (heat, light, noise, air quality) - physiological capabilities (anthropometrics, physical variation of people ) Hazards originated from outside the site – outside noise, vapors Information from a variety of sources – - observations from behavior and work practices - analysis of the underlying causes of unsafe behavior - interviews and surveys - safety tour and inspections
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Risk assessment inputs:
Incident review and subsequent analysis Monitoring and assessment of hazardous exposure (Chemical, Physical agent) Workflow and process analysis including their potential for vreating an unsafe behavior. Risk assessment inputs: Inputs to the risk assessment processes can include information or data on the following: - Details of location(s) where work is carried out the proximity and scope of hazardous interaction between activities in the workplace. human capabilities, behavior, training, competency, and experience for those who carry out hazardous task toxicology data, epidemiology and other health related data the proximity of other personnel (e.g. cleaners, visitors etc.)
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manufacturers and suppliers instructions for operation, maintenance, of equipment
the availability and use of control measures such as PPE abnormal conditions (e.g. interruption of utility services such as electricity, water) the potential for failure of plant and machinery components and safety devices or for their degradation from exposure to the elements or process material details of access to, and adequacy of emergency procedures, emergency escape plans, escape routes, route signage, emergency equipment, communication facility and external emergency support. monitoring data related to incidents associated with specific work activities, findings of any existing assessments relating to hazardous work activity details of previous unsafe acts by individuals or by others the disabling of control measures
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Risk assessment methodology
The duration and frequency at which tasks are carried out The accuracy and reliability of the data available for the risk assessment legal and other requirement of what constitutes an acceptable risk (e.g. permissible exposure level) Risk assessment methodology Different method are available, (e.g. check lists, questionnaire, risk matrix, computer modeling, Pareto analysis, HAZOP, FMEA, ranking/ voting etc.) choose appropriate for your work (Ref. IS 15643) Consider appropriate participation from workers, execution engineers, legal authorities etc. Understand the limitations and strength of each method and use it.
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Management of change: What changes in the organization take place –
New modified technology, equipment, facility, work environment New or revised procedures, work practices, designs, specifications, standards Different types or grades of raw material organizational structure, staffing, contractors Health and safety devices, equipment, controls management systems To evaluate these changes thru Hazard Identification and risk assessment process, get the answers for the following questions: Have new hazards been created? What are risk associated with the new hazard? could the change adversely affect existing risk control? have the most appropriate controls been chosen, keeping in mind usability, accebility.
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Determining the need for controls:
Risk assessment is completed. Taken account of existing controls Are they adequate? Needs improvement? Any new controls are required? To eliminate hazard or to reduce risk, if new controls are required, the following examples should be considered– Elimination – eliminate the by modifying design Substitution – substitute less hazardous material, less hazardous process or reduce the system energy by lowering amperage, pressure, temperature etc. Engineering controls – guards, interlocks, acoustic enclosures, Signage, warning and/or administrative controls- safety signs, glowing signs, siren, alarm, safe operating procedures, work permit, lock out/tag out etc. Personal protective equipment – Helmet, goggles, safety belt, respirators
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While implementing the control
While deciding the controls take into account: a combination of controls (engineering plus administrative controls) adapting work to the individual(mental and physical ability) taking advantage of technical progress using measures that protects everyone (engineering controls than PPE) introduction of planned maintenance emergency arrangement where risk control fail impart knowledge of control measures to workers While implementing the control Prioritize the controls (high risk area first, low risk area afterwards) Before modifying any work activity implement temporary control (before putting acoustic enclosure to noisy machine give PPE – ear plugs or muffs to workers) Temporary measures should not become permanent Refer legal requirement, standards, codes and practices etc Organize ongoing monitoring of controls
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Recording and documenting the result:
The following information should be documented:- Identification of hazards Risks associated with the identified hazards Indication of the levels of the risks related to the hazard Description of measures to control the risks Who and by when, he will implement the measures Ongoing review: HIRA activity should be reviewed periodically. HIRA may be affected by the following issues, where review is necessary:- the need to determine where existing risk controls are effective and adequate, the need to respond to new hazards the need to respond to changes that the organization itself has made
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Ongoing review continued:
the need to respond to feedback from monitoring activity, incident investigation, emergency situation or the result of testing of emergency procedure changes in legislation external factors e.g. emerging occupational health issues advances in control technology changing diversity in workforce, including contractors changes proposed by corrective and preventive action Internal Audit: Internal audits can provide – -an opportunity to check that HIRA and controls are in place and up-to-date -a useful opportunity to check whether the HIRA reflects actual workplace condition and practices
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Thank you.
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