ISO TS 22002-4 Internal Audit Checklist

This template covers the prerequisite programs used in food packaging operations, including site readiness, structural controls, utilities, contamination prevention, rework, traceability, and food defense. It is built to follow the audit path an internal auditor would use when checking packaging areas and support functions. Use it to verify whether the site is meeting the controls expected under ISO/TS 22002-4. It is not a product release form or a general food safety audit for finished food manufacturing.

Use it during scheduled internal audits, pre-certification readiness reviews, follow-up audits after a non-conformance, or when a packaging line changes layout, utilities, or material flow. It is also useful after maintenance work, contamination events, or a packaging process change that could affect PRPs. Because it is clause-based, it works best as a planned audit tool rather than a daily operator checklist. If you need a shift-by-shift sanitation or line clearance form, this template is broader than that use case.

A trained internal auditor, quality lead, food safety manager, or another competent person independent of the area being audited should run it. The auditor should understand packaging PRPs, contamination risks, and how the site’s zoning and utility controls work. Area owners, maintenance, sanitation, and production supervisors should support the audit by providing records and answering questions. For traceability or food defense items, involve the people who own those records and controls.

Most sites use this kind of checklist on a scheduled internal audit cycle, such as quarterly or semiannually, with additional audits after major changes or serious findings. High-risk packaging operations may audit critical sections more frequently, especially utilities, foreign material controls, and access control. The right cadence depends on your risk profile, customer requirements, and prior audit performance. If repeated findings appear, shorten the interval until the corrective actions are stable.

The checklist is structured to support ISO/TS 22002-4 prerequisite program expectations for packaging operations. It also fits the broader audit logic used in ISO 9001:2015 internal audits and food safety management systems that rely on documented PRPs, traceability, and corrective action. Where contamination, access control, or utility hygiene are involved, the checklist also reflects common food safety program expectations used by auditors and customers. It should be adapted to your site’s certification scope and any customer-specific requirements.

A common mistake is treating it like a yes/no walkthrough and missing the evidence behind the answer. Another is auditing the packaging floor without checking records for utility monitoring, maintenance, rework authorization, or prior non-conformances. Sites also miss edge cases such as temporary repairs, open dock doors, or unsecured storage during off-shifts. The best results come from recording objective evidence, not just marking items as passed.

Yes. You should tailor the checklist to your packaging materials, utility setup, zoning plan, and any allergen or sensitive-material risks at the site. Add line-specific foreign material controls, site-specific utility checks, or extra questions for shared storage, rework, or contractor access. Keep the clause logic intact so the audit still maps back to ISO/TS 22002-4 and your internal audit program. If you operate multiple sites, standardize the core questions and allow local add-ons.

An ad-hoc walk-through often finds obvious issues but misses repeatable evidence, record review, and clause coverage. This template forces a consistent audit trail, which makes findings easier to trend, assign, and close. It also reduces the chance that critical items like utility contamination controls or food defense access points are skipped. If you need to defend audit results to management, customers, or certification bodies, a structured checklist is much stronger than informal notes.

Record the deficiency clearly, assign an owner, and define containment, correction, and corrective action separately. For critical items, escalate immediately and verify that the affected packaging material or area is protected from unintended use. Then review whether the issue is isolated or systemic by checking maintenance history, training, records, and prior findings. Close the loop with evidence, not just a verbal confirmation.