Bread Tray Inspection: When to Repair, When to Replace

Take a tray out of food-contact service as soon as you find a crack in any surface that touches bread. Retail food codes name cracks as a defect in those surfaces, FDA’s manufacturing rule requires them to be adequately cleanable, and no amount of washing changes a crack. Repair is for parts that never touch food, such as a handle or a stacking tab, and only if the repaired tray still locks into its stack. The crack rule is written for trays that carry unwrapped product; a fleet that can put any tray under unwrapped product on any route is treated that way. Everything else comes down to two questions.

What decides repair or replace?

The table below turns on two questions: does the damage sit on a surface that touches food, and does the tray still lock securely onto the one below it?

What you find	Touches food?	Decision	Basis
Crack of any size in the floor or inside walls	Yes	Replace. Remove from food contact the same day	Retail food code; this guide's suggestion for plants
Crack in an outside rim, corner or handle that does not reach an inside surface	No	Tag it. Replace if it is in a load-bearing corner or wall, or if it has grown since the last check	Suggested practice
Broken or loose handle	No	Repair only if the repaired handle holds a loaded tray; otherwise replace	Suggested practice
Floor that rocks on a flat surface	Affects stacking	Replace	Field screening test
Gap at the locking rails when stacked on a good tray of the same model	Affects stacking	Replace	Field screening test
Scuffs and scratches on outside walls	No	Keep in service	Suggested practice
Deep scratches or gouges in the floor or inside walls	Yes	Replace if the surface is no longer smooth to the touch	Retail food code (smooth surface)
Discoloration	Depends	Find the cause before deciding (see below)	Suggested practice

Sources for the table: food-contact rows follow the Food Code rule quoted in the next section. Field screening tests and suggested practice are this guide’s; they are not maker acceptance criteria. If your tray maker publishes acceptance criteria or wear limits for your model, those replace the screening rows.

The table is deliberately strict on the first row and relaxed on scuffs. A tray whose outside is worn but whose food surfaces are smooth and whose rails still lock is doing its job.

Why does a crack in a food-contact surface end the tray’s food-contact life?

Under retail food codes, because the rule is written about the surface, not about how bad the crack looks. Those codes, based on the FDA Food Code, require multiuse food-contact surfaces to be smooth and “free of breaks, open seams, cracks, chips, inclusions, pits, and similar imperfections” (Food Code 4-202.11, as adopted in Washington at WAC 246-215-04204). The same codes say utensils “must be maintained in a state of repair or condition” that meets those requirements “or must be discarded” (Food Code 4-502.11, WAC 246-215-04580). States adopt the Food Code in their own versions and numbering, so check the text your health department enforces.

Wholesale bakeries that register with FDA work under its manufacturing rule, which is written differently. 21 CFR 117.40 requires equipment to be “adequately cleanable” and “adequately maintained to protect against allergen cross-contact and contamination,” and requires seams on food-contact surfaces to be “smoothly bonded or maintained so as to minimize accumulation of food particles, dirt, and organic matter” (eCFR 117.40).

The retail code names cracks outright, so a hairline crack fails it. The manufacturing rule does not name cracks; it asks whether the surface is adequately cleanable and maintained, and a plant that keeps a cracked tray in food contact would have to show that it is. This guide suggests holding plant trays to the retail standard anyway, and says so as a recommendation, not as the manufacturing rule: no “monitor it” category for cracks in food-contact surfaces, including for trays that only run at ambient temperature. The reason is practical: a plant that keeps cracked trays in food contact has to show each time that they are still cleanable, and a crack is where that argument is hardest to win. A crack outside the food zone is a different question: it is about whether the tray will hold its load, and the answer depends on where the crack is.

How do you find cracks and warping quickly?

Four field screening checks cover the failures in the table above, and none needs a tool beyond a flat surface and a light. They sort trays quickly; they are not the maker’s structural acceptance tests, and a tray that passes them can still fail in ways only the maker’s testing would show.

Side light on dark trays. Hairline cracks in black or navy trays are easy to miss under overhead light. Hold a flashlight low and nearly parallel to the floor and inside walls; a crack throws a shadow line.
Rock test. Set the empty tray on a flat table and press each corner. A tray that rocks has a floor that is no longer flat, and it will sit unevenly in a stack.
Two-tray lock test. Stack the tray on a known-good tray of the same model. Look for a gap at the locking rails and give the top tray a light sideways push. If it shifts or rides up, the column it sits in will be unstable on a moving truck.
Handle pull. Grip each handle and pull outward and upward. A handle that flexes at the root, or shows a pale stress mark where it joins the wall, is on its way to breaking under load.

Two findings that are not defects on their own:

Discoloration. The food-contact rules above do not name color change as a defect. What matters is the cause. If trays changed color after a new cleaning chemical, a hotter washer or outdoor storage, check that exposure against the tray’s rating and the chemical’s label before you put more trays through it. Sunlight damages the plastic itself, not only its color; the study behind that is cited in why trays should never dry in the sun. Faded trays that were stored outdoors deserve the full crack and handle checks. If your trays are color coded for allergens, a tray whose color no longer reads clearly should leave that program; the rules are in how allergen color coding should work. Other symptoms, such as sticking residue or odor, have their own causes, covered in diagnosing residue, odor and other tray problems.

Surface scuffing. Scratches on the outside walls do not touch bread and do not affect how the tray stacks. Deep scratches inside the tray are different: once the food surface is no longer smooth to the touch, treat it like the crack row in the table.

What can be repaired, and what cannot?

Repair makes sense for damage outside the food zone that affects handling, not food contact. Handles and stacking tabs are the usual candidates.

The same Food Code section requires multiuse food-contact surfaces to be finished with smooth welds and joints (WAC 246-215-04204). A field weld across the floor of a bread tray that you cannot get smooth and flush fails that test. In practice, that leaves cracks in food-contact surfaces on the replace side.

Repair tools and services exist for the parts that can be fixed. Drader’s Injectiweld, for example, is described by its maker as “a hand-held plastic welding fabrication kit and repair system,” with a materials list that reads “PP PE ABS PVC HDPE & More” (Drader Injectiweld). Some tray makers also run service programs: ORBIS says its reusable packaging management service “sorts, inspects, cleans, refurbishes and repairs all types of reusable packaging” (ORBIS).

Whatever the method, this guide suggests a repaired tray goes back into service only after it passes the same screening checks as any other tray, and after the maker’s criteria where the maker gives them. Before you commit to in-house welding, compare the labor per repaired tray with the price of a new tray and with the cost of a tray that fails in a loaded stack.

In this guide’s view, not repairable in any practical sense:

A floor that rocks. Flattening a warped tray takes controlled heat and re-forming, which is not a repair-bench job.
Locking rails worn so the two-tray test shows a gap. The fit is molded in.
Any tray with more than one of the problems above.

How often should trays be inspected?

The FDA rules quoted above do not set a tray inspection interval; they tie cleaning and maintenance to what is necessary to prevent contamination, so the schedule is yours to set and defend. A workable starting point uses three layers:

Check	When	What	Who
Quick look	Every time a tray is loaded for dispatch	Cracks in the floor, broken handles, obvious warping	The person loading the tray
Detailed inspection	Every tray returning through the wash line, or on a fixed weekly sample	All four checks above	Wash line or receiving staff
Fleet review	Monthly	Share of trays failed and why, by route and by tray model	Fleet or operations manager

Sources for the table: suggested practice; set your own intervals from your failure data.

Any tray that comes back after an obvious impact, such as a tray that fell from a truck bed or sat under a collapsed stack, gets the detailed inspection before it goes back into service, whatever the calendar says.

The one physical rule that makes any schedule work is a quarantine spot: a marked area where failed and doubtful trays go and from which nothing returns to service without a recorded decision. Without it, a tray set aside by one person gets picked up and loaded by the next.

For every tray retired, record the date, the tray model, the failure (crack in food surface, crack elsewhere, warp, rails, handle) and, if you know it, the route it came back from. Over a few months this shows which failures dominate and where they start. A rising share of handle failures points at handling on a particular route; a rising share of warped floors points at storage or washing.

Where your food safety plan names tray condition as a control, file the retirement log with the plan and keep it on the plan’s schedule; see where trays sit in a HACCP or preventive controls plan.

Where does this leave a borderline tray?

A tray you are unsure about is a tray that goes to quarantine, not back on the line. If the doubt is about a food surface, it is retired from food contact. If the doubt is about stacking, the two-tray test decides it in under a minute. When failures cluster on one tray model rather than one route, the next question is whether the trays themselves are the problem, which troubleshooting trays that will not stack works through.