Safety Fundamentals and Hazard Recognition
Core concepts
Hazard recognition is the foundation of every later domain. A hazard is a potential source of harm; risk is the combination of the likelihood and severity of that harm. Questions often blur the two. Recognise the main hazard classes: physical (energy, noise, temperature, pressure), chemical, biological, ergonomic, psychosocial, and organisational. Understand the hierarchy of controls (elimination, substitution, engineering, administrative, PPE) and the difference between hazard controls and exposure controls.
Recognising hazards
Candidates must know the standard recognition tools: walkthrough inspections, job hazard analysis (JHA), task-based observation, incident and near-miss data, safety data sheets, and worker reports. A near miss is a free lesson; treat it as a hazard indicator, not a non-event. Look for latent conditions (poor design, unclear procedures) as well as active failures (unsafe acts).
Traps in questions
- Confusing a hazard with a risk, or a control with a hazard.
- Assuming PPE is a preferred control; it is the last resort.
- Treating a near miss as irrelevant because no one was hurt.
- Missing that a single hazard can have several exposure routes (inhalation, ingestion, skin, injection).
Rule of thumb
When you meet a scenario, ask: What energy or agent can cause harm, who is exposed, and what is the highest-order control available? If a question offers elimination or engineering before administrative or PPE, the higher-order control is usually the intended answer.
Worked example
A worker reports a wet floor near a loading dock. Recognition: slip hazard (physical). Controls in order: eliminate the leak, engineer drainage or mats, add signage and housekeeping, then non-slip footwear. The best answer is to fix the source, not to add a caution sign alone.