Hazard Identification and Risk Assessment

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HAZARD IDENTIFICATION & RISK ASSESSMENT : 

HAZARD IDENTIFICATION & RISK ASSESSMENT MSL40109 – Certificate IV in Laboratory Techniques MSL943002A / MSL944001A – Participate in and Maintain laboratory/field workplace safety

HAZARD : 

HAZARD Refers to the potential of something to cause harm i.e. a chemical substance may cause a skin rash (not very hazardous) or it may kill you instantly (extremely hazardous) RISK Refers to the likelihood of a person being injured in a given situation Depends on: what the (hazardous) substance is made of how much of it is being used what is being used for

RISK – Some Examples: 

RISK – Some Examples The risk associated with using a lighter in a campfire is very low - even though it contains a highly flammable (highly hazardous) substance WHY? not used very often lighter only contains small volume HOWEVER When transferring liquid petroleum gas from a supply tank to a truck the risk is very high WHY? Transfer is conducted often Volumes involved are very large HIGHER CHANCE OF SOMETHING GOING WRONG!!

PowerPoint Presentation: 

IF YOU ARE AWARE OF THE HAZARDS YOU CAN MINIMISE YOUR CHANCES OF BEING HURT ( minimise the risk)

TYPES OF HAZARDS : 

TYPES OF HAZARDS CHEMICAL BIOLOGICAL PHYSICAL IONISING AND NON-IONISING RADIATION PSYCHOSOCIAL STRESSES ERGONOMIC AND MANUAL HANDLING

1. Chemical Hazards: 

1. Chemical Hazards Highly volatile gases, vapours and dust Flammable solids & liquids Corrosives Explosives 2. Biological Hazards Viruses Bacteria Fungi Extremely hazardous as they are capable of reproduction and transmission

3. Physical Hazards: 

3. Physical Hazards Noise Lighting levels Temperature Anything that affects ‘comfort’ levels 4. Ionising & Non- ionising Radiation Hazards NON- IONISING (do not chemically alter cell body directly): Ultraviolet (UV) Infrared (IR) Microwave IONISING (directly affect chemicals is cell tissue) X-rays Radioactive materials

5. Psychosocial Stress Hazards: 

5. Psychosocial Stress Hazards Personal Stress Social Stress i.e. bullying http://www.dailytelegraph.com.au/news/men-who-tormented-suicide-waitress-brodie-panlock-fined/story-e6freuy9-1225827882854 6. Ergonomics and Manual Handling Hazard Inadequate resources (i.e. old desks can lead to Repetitive Strain Injury (RSI) Inadequate procedures Little concern for the worker - more focus on what’s cheaper and easiest to repair Back injuries from people lifting things they shouldn’t

WHAT MAKES A SUBSTANCE HAZARDOUS?: 

WHAT MAKES A SUBSTANCE HAZARDOUS? HAZARDOUS IF; Toxic (or poisonous) Can cause damage to external tissues Can react in a way so to cause harm to people (or structures) nearby

HAZARDOUS SUBSTANCES MAY BE GROUPED INTO CATEGORIES BASED ON THEIR EFFECTS ON THE BODY : 

HAZARDOUS SUBSTANCES MAY BE GROUPED INTO CATEGORIES BASED ON THEIR EFFECTS ON THE BODY Toxics - Absorbed into body and cause harm Carcinogens - Cause cancer Irritants & Sensitisers – Cause inflammation, irritation and dermatitis of the skin and respiratory track Corrosives – Burn and destroy tissue Flammables & Explosives – Burning of tissue, damage from mechanical impact

TOXICOLOGY: 

TOXICOLOGY ROUTE OF ENTRY: Poisoning (Generally) Occurs Via: Inhalation Skin absorption Consumption

TOXICOLOGY: 

TOXICOLOGY TOXICITY (effect) DEPENDS ON: Dose – amount of poison taken into the body – is related to time Response of the Individual – how a person reacts to a specific amount varies from person to person but majority of population falls in the ‘normal’ category THEREFORE LD50 and LC50 exist LD 50 – dose required to kill 50% of the population LC 50 – like LD50 but specifically refers to concentration of poison required

PowerPoint Presentation: 

TOXICITY (effect) DEPENDS ON: Level of Exposure - How much contact you can have before - relevant for absorption and inhalation of poisons Whether or not one is ‘poisoned’ through exposure depends on: - period of exposure - frequency of exposure - route of exposure - persistence of hazardous substance

SOURCES of OHS INFORMATION: 

SOURCES of OHS INFORMATION Material Safety Data Sheets ( MSDSs ) Hazchem Codes - Information on; Firefighting medium Personal Protective Equipment Risk of Violent reaction or explosion etc Dangerous Goods Classification

SOURCES of OHS INFORMATION (cont.): 

SOURCES of OHS INFORMATION (cont.) Dangerous Goods Classification