Food Safety Hazards and Risk Assessment in Processing
What the exam tests
This domain tests whether you can identify biological, chemical (including allergen), and physical hazards at each processing step and convert hazard identification into a defensible risk judgment using likelihood and severity.
Core rules
- A hazard is an agent with potential to cause illness or injury; risk is the probability and severity of that harm under defined exposure.
- Codex risk analysis separates risk assessment (scientific), risk management (selection and implementation of controls), and risk communication.
- Rank hazards with a documented matrix or decision tree; justify severity for susceptible groups, not healthy adults alone.
- Allergens are chemical hazards: a trace can cause anaphylaxis, so likelihood may be low while severity is high.
- Evaluate raw materials, process steps, recontamination routes, maintenance, water, air, and consumer preparation.
Worked example
A chilled ready-to-eat grain salad has no listericidal step and is handled after cooking. Listeria monocytogenes: severity high, likelihood moderate because of post-process handling and growth at refrigeration; combined risk high, so the process needs a validated listericidal step or reformulation, plus environmental monitoring. Undeclared sesame from a shared spice line: severity high for allergic consumers, likelihood low if supplier letters and label checks are verified; risk medium and managed by allergen scheduling, validated cleaning, and label verification rather than a thermal CCP.
Traps
Treating hazard and risk as synonyms; downgrading allergens because they are non-infectious; using an unjustified matrix; ignoring exposure; missing hazards introduced by maintenance or water.