Workplace Safety and Environmental Practices
Core concepts
Every workshop task starts with hazard identification and risk control. Understand the hierarchy of control: eliminate the hazard, substitute a safer option, apply engineering controls such as ventilation or guarding, then administrative controls such as procedures and training, and finally personal protective equipment as the last line of defence. Know the purpose of safety data sheets (SDS) for chemicals, the meaning of hazardous substance labelling, and the correct storage and disposal of waste oils, coolants, solvents and batteries. Understand manual handling limits, correct lifting technique, safe jacking and support with stands, and the dangers of compressed air, high-voltage battery systems and rotating machinery. Fire classes and extinguisher selection, emergency evacuation, first aid and reporting obligations are all examinable.
Traps
Questions often present PPE as the best control when it is the least effective. Watch for scenarios where a vehicle is supported only by a jack, or where waste coolant is poured down a drain. Distinguish between a hazard (the source of harm) and a risk (the likelihood and severity of harm). Remember that isolation and lockout must occur before working near moving parts or energised circuits.
Worked example
A technician must drain engine oil. The correct sequence is: identify the hazard, wear gloves and eye protection, position the vehicle on a hoist or stands, drain into a sealed container, label the container, and transfer it to the licensed waste contractor. Never mix waste streams, because contaminated oil becomes far harder and costlier to recycle.
Rule of thumb
If a control relies on a person remembering to do something, it is weaker than one that physically prevents exposure.