CHA Hazard Identification & Risk Assessment 2 — Questions and Answers
Question 1: Which term describes the probability that a hazard will occur multiplied by the severity of its consequences?
- Risk (Correct answer)
- Hazard
- Critical limit
- Corrective action
Correct answer: Risk
Risk is the combination of the likelihood of a hazard occurring and the severity of harm it would cause.
Question 2: A HACCP team is evaluating allergen cross-contact on a shared production line. Which type of hazard does allergen cross-contact represent?
- Chemical (Correct answer)
- Biological
- Physical
- Radiological
Correct answer: Chemical
Allergens are classified as chemical hazards under HACCP because they are chemical substances that can cause adverse health reactions.
Question 3: During hazard analysis, a team identifies Listeria monocytogenes as a concern in a ready-to-eat deli meat facility. What characteristic of this pathogen makes it a significant hazard?
- Its ability to grow at refrigeration temperatures (Correct answer)
- Its resistance to UV light
- Its inability to form spores
- Its short incubation period
Correct answer: Its ability to grow at refrigeration temperatures
Listeria monocytogenes is uniquely dangerous in RTE foods because it can grow at refrigeration temperatures (as low as 0°C/32°F).
Question 4: Which of the following best describes a 'reasonably likely to occur' standard used in hazard analysis?
- A hazard that has a realistic chance of occurring without proper controls (Correct answer)
- Any hazard that has ever been reported in scientific literature
- A hazard requiring mandatory regulatory intervention
- A hazard with a severity rating above 8 on a 10-point scale
Correct answer: A hazard that has a realistic chance of occurring without proper controls
The 'reasonably likely to occur' standard filters hazards to those with a realistic probability given the specific process, not merely theoretical possibilities.
Question 5: Which source is MOST valuable for a HACCP team identifying microbiological hazards associated with a specific raw ingredient?
- FDA's Bad Bug Book and peer-reviewed food safety literature (Correct answer)
- Internal sales records from the previous year
- Employee training completion logs
- Customer satisfaction surveys
Correct answer: FDA's Bad Bug Book and peer-reviewed food safety literature
The FDA Bad Bug Book and scientific literature provide evidence-based information on pathogens associated with specific foods and ingredients.
Question 6: A frozen vegetable processor finds metal fragments from equipment wear. Which factor determines whether this physical hazard is 'significant'?
- Severity of injury (e.g., size, hardness) and likelihood it will occur (Correct answer)
- The cost of the metal detection equipment
- Whether the fragments are visible to the naked eye
- The country of origin of the equipment
Correct answer: Severity of injury (e.g., size, hardness) and likelihood it will occur
Significance of a physical hazard is determined by assessing both the severity of potential injury and the likelihood that the hazard will occur in the product.
Question 7: When conducting a hazard analysis for a thermally processed canned food, which biological hazard receives the highest priority due to its potential to form heat-resistant spores?
- Clostridium botulinum (Correct answer)
- Salmonella Typhimurium
- Staphylococcus aureus
- Listeria monocytogenes
Correct answer: Clostridium botulinum
Clostridium botulinum produces highly heat-resistant spores and a deadly neurotoxin, making it the primary hazard concern for low-acid canned foods.
CHA Hazard Identification & Risk Assessment 2
Which term describes the probability that a hazard will occur multiplied by the severity of its consequences?