HACCP is a system for finding food-safety hazards and controlling them at critical points. For a walk-in cooler, the critical point is holding food at 41 degrees Fahrenheit or below. A simple plan states the limit, how you monitor it, what you do when it fails and what records you keep.
HACCP stands for hazard analysis and critical control points. It sounds formal, but the idea is practical. Decide what could go wrong, decide what limit keeps food safe, check it regularly and fix problems fast. Not every Mississippi food business needs a full written HACCP plan, so ask what your permit requires.
The steps applied to a walk-in
| Step | In the walk-in |
|---|---|
| Identify hazards | Bacterial growth from warm storage, cross-contamination, mold, allergen mix-ups |
| Find critical points | Holding temperature, cooling of hot food, storage order |
| Set critical limits | 41 degrees or below for cold TCS food |
| Monitor | Log air and food temperatures at set times |
| Corrective actions | Recheck, adjust, move food, discard, call repair |
| Verify | Calibrate thermometers, review logs, service equipment |
| Keep records | Logs, repair invoices, discard notes |
A short plan you can write today
- State the limit. For example, cold food at 41 degrees or below.
- Say who checks and when. Names and times.
- Say what happens when a reading is high. Steps and who decides.
- Set a discard rule. Time limits for food above 41.
- List repair contacts. Call order and numbers.
- Review it. After any failure and at least yearly.
Equipment as part of the plan
A plan only works if the equipment can meet the limit. Preventive maintenance reduces the chance the box fails at a critical moment. See the annual maintenance guide and the daily and weekly checks.
Monitoring and records
Records are the proof. Use the temperature log and place thermometers well, as described on the placement page. The TCS foods page explains which foods matter most.
This page is an overview, not a compliance plan. Ask the Mississippi State Department of Health at 601-364-2832 about your requirements. The wider food-safety guide gives more context.
An example corrective action
Suppose the morning log shows the box at 46 degrees. A simple written response might read: recheck with a second thermometer, probe the warmest food, check the door and fans, record the time the box went above 41, move high-risk items to another cold unit, call for repair and apply the discard rule to anything that was above 41 for longer than the limit. Writing the steps in advance means a stressed team does not have to invent them on the spot.
Keep the plan short enough that staff will actually read it. One page posted near the walk-in door beats a binder on a shelf.
Verification in practice
Verification means proving the system works. Once a month, check thermometers against an ice-water bath, read back through the logs and confirm that any out-of-range reading has a note explaining what was done. After any repair, watch the box for a day and record what you see. This turns the plan from paper into habit.
Questions about HACCP
Does every restaurant need a HACCP plan?
Requirements depend on the type of operation. Some processes require one. Ask the health department.
Who writes the plan?
The operator, often with training or consultant help. It should reflect what your kitchen really does.
How does equipment repair fit in?
Repairs are a corrective action, and records of them are evidence that you controlled the hazard.