QRS Quality · Food safety

HACCP Assessment: Control Evidence, Monitoring and Verification

Assessment needs evidence that selected measures can control hazards and are implemented as required during production. One signed plan does not demonstrate effectiveness on site.

Questions for your situation

What is the practical difference between validation and verification?

Validation examines evidence that a measure can control the hazard under relevant conditions. Verification checks implementation and whether the plan operates as intended. A technical process-capability study and a daily record review serve different purposes. Make the evidence supporting both activities clear.

Are all products nonconforming if an instrument's calibration is overdue?

Assess measurement reliability and the affected period first. Connect possible deviation, previous checks and available comparison evidence to product decisions. Do not assume either identical consequences for every item or perfect accuracy. Handle necessary product controls and system correction as separate tasks.

Can night-shift records be ignored if they look the same as daytime records?

Staff, line speeds, cleaning and responsibilities can differ by shift. Verify that records represent actual measurements and practice. Identical values alone do not prove falsification; investigate measurement and recording methods. Assessment should not be confined to the shift present during the visit.

Why can new packaging require changes to a HACCP plan for the same product?

Barrier, closure and storage characteristics may affect hazard controls. Assess new filling or sealing processes if equipment changes. Determine whether existing shelf-life and control evidence represents the new arrangement. Treating packaging as only a purchasing code change can miss a significant risk.

How should assessment timing be chosen for seasonal production?

Plan around periods when the relevant product and critical process actually operate. Document review and observation provide different evidence. Review equipment, ingredients and personnel changes before the new season. Set timing and assessment scope against the real production programme.

Must every trade secret be disclosed when a customer requests the HACCP plan?

Clarify required evidence and contractual conditions and arrange suitable confidentiality. Control justification can often be shown without unnecessary disclosure of recipe secrets. However, management of a critical hazard cannot remain entirely unexplained. A certificate alone does not establish the customer's particular product requirements.

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