Likelihood, Severity and Hazard Significance
Using product, process, consumer and control evidence to evaluate risk consistently and decide which hazards must enter the HACCP plan.
How to prepare for Level 3 HACCP
Move from recognising the seven principles to analysing an evidence-led plan, responsibility boundaries and the proof needed to keep people, process and product under control.
Core concepts
Concept 1
likelihood and severity assessed in the product and process context
Exam cue: Use realistic process data and current controls when judging likelihood, not generic fear or optimism.
Concept 2
consumer susceptibility, exposure, dose and consequence
Exam cue: Record why a hazard is significant or not so the decision can be reviewed and challenged.
Concept 3
existing prerequisite and control reliability
Concept 4
consistent risk method, rationale and reassessment when evidence changes
Risk pitfalls and guardrails
Using a score as a substitute for reasoning or manipulating it to fit a preferred outcome.
Guardrail: Do not universalise provider assessment facts, copy an unsupported plan value, overclaim management authority, call every control a CCP, release uncertain product or confuse validation with verification.
Dropping a serious hazard because it is infrequent without considering severity and vulnerable consumers.
Guardrail: Do not universalise provider assessment facts, copy an unsupported plan value, overclaim management authority, call every control a CCP, release uncertain product or confuse validation with verification.
Memory anchors
Hazard versus risk
A hazard can cause harm; risk considers likelihood and severity in context.
Significance decision
Evaluate the hazard, consumers, process, exposure and control reliability, then record the rationale.
Matrix is a tool
A score supports structured judgement but does not replace competent evidence.
Controls affect likelihood
Credit an existing control only when its design and performance are reliable.
Reassess on change
New evidence, incidents, suppliers, formulation or process conditions can change significance.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
A hazard has low expected frequency but could cause severe illness in vulnerable consumers. How should the team decide significance?
Why should likelihood be assessed in the absence of the control measure under consideration when identifying a significant hazard?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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