Reject Swollen, Leaking, or Deeply Dented Food Cans

Canned food is shelf-stable because the container and processing method protect the product. A can that is leaking, swollen, or seriously damaged may no longer provide that protection. During receiving, inspect cans before accepting them and again before opening. When the container’s integrity is questionable, the safe decision is to reject or isolate it—not to taste the contents or rely on cooking to correct the defect.

Reject defects that can signal seal failure

Reject a can that is swollen at either end or has a bulging body. Swelling may result from gas production or pressure inside the container and can indicate a serious food-safety problem. Reject leaking cans, cans with holes or punctures, and cans with deep dents that create sharp creases or damage a seam. A dent at the double seam is more concerning than a shallow dent on a flat panel because the seam is part of the closure that keeps contaminants out.

Also reject cans that are badly rusted, especially if corrosion has weakened the metal or created a leak. Surface rust that wipes away without pitting may be different from deep corrosion, but workers should not make an uncertain product decision alone. Follow the receiving standard and ask the supplier or person in charge when a can’s integrity is unclear.

Inspect without opening or tasting

Look over the ends, body, seams, labels, and case before accepting delivery. Use good lighting and avoid stacking cans so damage is hidden. A leaking container should be handled carefully; do not squeeze, puncture, or open it to investigate. Some dangerous toxins do not change the food’s smell, appearance, or taste. Tasting a questionable product is never a safe inspection method.

If a suspicious can is found in storage, separate it from usable food and mark it “do not use.” Keep the lot number, brand, product, supplier, receipt date, and photographs if safe to take. Notify the manager and supplier. If multiple containers from a lot are affected, or there is reason to suspect illness or deliberate tampering, contact the health department and follow official instructions.

Do not try to salvage questionable cans

Do not rinse, repackage, or cook product from a can whose integrity is compromised. Cooking does not turn an unidentified hazard into an approved product, and handling a leaking can can spread contamination. Use gloves and any required protective equipment when dealing with leaks, clean the surrounding area using the establishment’s procedure, and discard the product in a way that prevents access by people or animals. Follow local rules for disposal and any public-health directions.

Never put suspect cans into a donation or employee-food area. A container rejected for safety must not return to service because it looks acceptable after cleaning. If a supplier asks for the product back, keep it isolated and follow instructions that preserve safety and traceability.

Receiving procedure and supplier follow-up

A receiving checklist should include package condition, temperature where applicable, date and lot information, and an acceptance or rejection decision. Train receivers to recognize bulging ends, leaks, punctures, seam damage, and severe rust. Identify a manager who can make borderline decisions and a location to hold products that need review. Document recurring defects and report patterns to the supplier so future deliveries can be corrected.

For example, a delivery includes a case with one can bulging at the top. The receiver should reject the suspect unit and inspect the remaining cans and case for related damage. If other cans appear normal and the manager follows the approved procedure, the affected item remains out of use while the supplier is contacted. If several cans are swollen or leaking, the entire lot may need to be rejected and reported.

Quick receiving checklist

• Reject swollen, leaking, punctured, or badly rusted cans.
• Reject deep or sharp dents, especially on or near seams.
• Do not taste, smell, or open suspect product as a test.
• Isolate and label suspect items so nobody uses them accidentally.
• Record product, lot, supplier, and corrective action.
• Report a repeated or widespread defect to the supplier and regulator as appropriate.