Concept preview

What you will be able to do

1. 01Distinguish hazards from task-specific risk and select controls using the hierarchy of controls.
2. 02Interpret WHMIS labels and relevant SDS sections without treating either as a complete site procedure.
3. 03Apply current WorkSafeBC and CCOHS eyewash and safety-shower guidance to eye and skin exposure scenarios.
4. 04Justify why untrained students alert, evacuate or begin assigned decontamination without improvising spill or fire response.

Laboratory safety is not a list of objects and slogans. It is a system for preventing exposure, recognizing when prevention has failed, and responding without creating another casualty. A hazard is a source with the potential to cause harm: a corrosive liquid, toxic vapour, sharp edge, hot surface or pressurized vessel. Risk depends on both the possible harm and the conditions of exposure, including concentration, quantity, route, duration, task and available controls. Ten millilitres of dilute solution handled in a closed apparatus does not present the same risk as a litre of concentrated reagent poured at face height. The label identifies hazards, but a procedure-specific risk assessment determines the controls. A student therefore does not choose protection by colour, smell or habit. The student reads the procedure, label and current safety data sheet, follows the instructor’s site-specific directions, and stops when the planned controls are missing or not working.