Hazard Identification
The first step in any risk assessment is identifying potential hazards. A hazard is anything that has the *potential* to cause harm. This could be a physical danger (e.g., moving machinery), a chemical substance, an environmental condition (e.g., slippery floor), or even a procedural error.
Systematic methods like ‘what-if’ analysis and checklists can greatly improve hazard identification. Consider all possible scenarios – normal operations, foreseeable malfunctions, and unexpected events.
Risk Analysis: Likelihood & Severity
Once a hazard is identified, you need to assess its *likelihood* (probability of occurrence) and *severity* (potential consequences). These are often represented on a matrix.
Likelihood can be categorized as low, medium, or high. Severity ranges from negligible to catastrophic. Combining these factors determines the overall risk level.
Risk = Likelihood x Severity
Control Measures
Based on the assessed risk, you implement control measures designed to reduce either the likelihood or severity of the hazard. These can be categorized as elimination, substitution, engineering controls, administrative controls, and personal protective equipment (PPE).
Prioritize controls based on their effectiveness – elimination is always preferable, followed by substitution, then engineered solutions.
Review & Monitoring
Risk assessment isn’t a one-time event. Regularly review your assessments, especially after changes to processes or equipment. Monitor the effectiveness of implemented controls.
Document all risk assessments and control measures thoroughly for traceability and continuous improvement.
Frequently asked questions
What’s the difference between hazard and risk?
A hazard is a potential source of harm. Risk is the *probability* that harm will occur, combined with the *severity* of that harm.
Why is documentation important in risk assessment?
Documentation provides a clear record of identified hazards, assessed risks, and implemented controls – essential for accountability and continuous improvement.
Can I use only numerical data for risk analysis?
While quantitative data is valuable, qualitative assessments (e.g., expert judgment) are crucial when precise data isn't available or the potential consequences are significant.
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