CHA Verification & Validation of HACCP Systems 3 — Questions and Answers
Question 1: During a HACCP audit, the auditor finds that corrective action records indicate the same CCP deviation has recurred six times in three months. What does this MOST likely indicate?
- The monitoring frequency is set correctly
- The critical limit or process needs revalidation and root cause analysis (Correct answer)
- Corrective actions are effective
- The HACCP plan requires no changes
Correct answer: The critical limit or process needs revalidation and root cause analysis
Recurring deviations at the same CCP signal that the current critical limit or process may not be adequate and that root cause analysis and revalidation are needed.
Question 2: Which element distinguishes an internal HACCP audit from a routine verification activity?
- Internal audits are performed by the HACCP team leader only
- Internal audits assess the overall HACCP system's implementation and effectiveness, not just individual CCP records (Correct answer)
- Verification activities are performed less frequently than internal audits
- Internal audits focus exclusively on supplier performance
Correct answer: Internal audits assess the overall HACCP system's implementation and effectiveness, not just individual CCP records
Internal HACCP audits provide a comprehensive, system-level review of HACCP plan implementation and effectiveness beyond day-to-day monitoring record checks.
Question 3: A HACCP plan validation study must demonstrate that the process achieves at least what standard for a Listeria monocytogenes control CCP in ready-to-eat deli products under FDA guidance?
- 1-log reduction
- 2-log reduction
- 5-log reduction (Correct answer)
- 7-log reduction
Correct answer: 5-log reduction
FDA and USDA/FSIS guidance for ready-to-eat deli meat products generally requires a minimum 5-log (100,000-fold) reduction of Listeria monocytogenes.
Question 4: What is the role of 'direct observation' as a HACCP verification tool?
- To replace monitoring records
- To confirm that monitoring personnel are performing procedures correctly as written (Correct answer)
- To validate the critical limit scientifically
- To conduct a hazard analysis update
Correct answer: To confirm that monitoring personnel are performing procedures correctly as written
Direct observation verifies that employees are actually following the monitoring procedures specified in the HACCP plan, ensuring system integrity.
Question 5: Which best describes 'system verification' compared to 'CCP verification' in a HACCP context?
- System verification checks a single critical limit; CCP verification audits the full plan
- System verification evaluates the overall HACCP plan's effectiveness; CCP verification confirms individual CCPs function correctly (Correct answer)
- They are interchangeable terms with no distinction
- System verification is performed by regulators only
Correct answer: System verification evaluates the overall HACCP plan's effectiveness; CCP verification confirms individual CCPs function correctly
CCP verification focuses on individual control points, while system verification is a broader assessment of whether the entire HACCP plan is functioning as intended.
Question 6: Under USDA FSIS regulations (9 CFR 417), how often must an establishment reassess its HACCP plan at a minimum?
- Monthly
- Every six months
- At least annually or whenever a change occurs that could affect the hazard analysis (Correct answer)
- Every three years
Correct answer: At least annually or whenever a change occurs that could affect the hazard analysis
9 CFR 417.4 requires that the HACCP plan be reassessed at least annually or whenever there is a change that could affect the hazard analysis.
Question 7: A HACCP auditor discovers that the facility's HACCP plan lists water activity (aw) as a CCP for controlling Staphylococcus aureus but no validation records exist. What is the CORRECT auditor finding?
- Minor observation with no corrective action needed
- Major non-conformance — a CCP critical limit must be supported by validation evidence (Correct answer)
- Observation that can be closed with a training record
- Not applicable because aw is a prerequisite program parameter
Correct answer: Major non-conformance — a CCP critical limit must be supported by validation evidence
Every CCP critical limit must be supported by validation evidence; the absence of validation records for a CCP is a major non-conformance.
CHA Verification & Validation of HACCP Systems 3
During a HACCP audit, the auditor finds that corrective action records indicate the same CCP deviation has recurred six times in three months.
What does this MOST likely indicate?