HACCP stands for Hazard Analysis and Critical Control Points. It is a systematic approach to food safety that focuses on preventing contamination rather than catching it after the fact. Instead of inspecting finished products and hoping problems are caught in time, HACCP requires food producers to identify every point in their process where something could go wrong and build controls directly into production. The system is built on seven core principles and is legally required for certain food industries in the United States and internationally.
How HACCP Started With Space Food
HACCP originated in the early 1960s when Pillsbury partnered with NASA and the U.S. Army Natick Laboratories to produce safe food for astronauts on the Gemini and Apollo missions. The core problem was simple: food poisoning in a spacecraft could be catastrophic, and there was no way to test every single item before launch without destroying it. Traditional quality control, which relied on spot-checking finished products, wasn’t reliable enough.
Paul Lachance, who led the food effort at NASA’s Manned Spacecraft Center (now Johnson Space Center), and Howard Bauman at Pillsbury essentially applied spacecraft-level reliability thinking to food production. Rather than testing the end product, they mapped out the entire production process and identified the specific steps where hazards could enter. That prevention-first philosophy became the foundation of HACCP and eventually spread from space food to the entire food industry.
The Seven Principles
Every HACCP plan is built around seven principles established by the FDA. They work as a sequence: each one builds on the step before it.
1. Conduct a hazard analysis. This means evaluating every step in food production, from raw ingredients to the final packaged product, and identifying where biological, chemical, or physical hazards could be introduced. Biological hazards include bacteria like Salmonella or E. coli. Chemical hazards might be cleaning agents or pesticide residues. Physical hazards are things like metal fragments or glass shards.
2. Determine the critical control points (CCPs). A CCP is a specific step in the process where you can actually intervene to prevent, eliminate, or reduce a hazard to a safe level. Not every step qualifies. Cooking is a classic CCP because applying sufficient heat kills harmful bacteria. Refrigerated storage is another, because keeping food below a certain temperature prevents bacterial growth.
3. Establish critical limits. Each CCP needs a measurable boundary. This is the maximum or minimum value that must be met, such as a minimum internal cooking temperature of 165°F for poultry, or a maximum pH level for acidified foods. If the measurement falls outside the critical limit, the food is considered unsafe.
4. Establish monitoring procedures. Someone needs to be checking that each CCP stays within its critical limits. Monitoring means conducting planned observations or measurements on a set schedule, like checking cooking temperatures with a calibrated thermometer at specific intervals, and recording the results.
5. Establish corrective actions. When monitoring reveals that a CCP has drifted outside its critical limit, the plan must spell out exactly what happens next. This could mean reprocessing the food, adjusting equipment, or discarding the affected batch entirely.
6. Establish verification procedures. Verification is separate from monitoring. It confirms that the overall HACCP system is working as designed. This includes activities like reviewing monitoring records, calibrating instruments, and periodically testing product samples. Think of monitoring as the day-to-day check and verification as the audit of whether those daily checks are actually doing their job.
7. Establish record-keeping and documentation. Every action taken under the HACCP plan needs to be documented. This creates a paper trail that proves the system is functioning and allows inspectors or internal reviewers to trace any problem back to its source.
Five Steps Before You Start
Before a facility can apply the seven principles, it needs to complete five preliminary tasks. According to guidance from NOAA Sea Grant, these are: assembling a HACCP team with the right expertise, describing the food product and how it will be distributed, identifying who will eat the product (since vulnerable populations like children or the elderly may need stricter controls), developing a flow diagram that maps every step of the production process, and verifying that diagram by walking through the actual facility to confirm it matches reality.
Facilities also need to have Sanitation Standard Operating Procedures (SSOPs) already in place as a prerequisite. HACCP is not a replacement for basic hygiene. It’s a layer on top of it.
Where HACCP Is Legally Required
In the United States, HACCP is mandatory for several food sectors. The USDA’s Food Safety and Inspection Service requires it for all meat, poultry, and egg product processing facilities. The FDA requires it for seafood processing and for juice production. These regulations exist specifically to reduce pathogenic microorganisms on these higher-risk products.
Internationally, the Codex Alimentarius Commission (a joint body of the FAO and World Health Organization) sets the global standard. Their General Principles of Food Hygiene document was updated in 2023, moving HACCP guidance from an annex into the main body of the text. The update also introduced the concept that certain Good Hygiene Practices deserve extra attention when they have a particularly large impact on food safety, recognizing that not all prerequisite practices carry equal weight.
Many countries base their own food safety laws on the Codex framework, which means HACCP is effectively the global standard for food safety management in commercial food production.
Validation, Verification, and Reassessment
Two terms in HACCP that often cause confusion are validation and verification. Validation happens upfront: it demonstrates that the HACCP plan, as designed, can actually control the identified hazards under real plant conditions. If your plan says cooking chicken to 165°F will eliminate Salmonella, validation is the evidence proving that’s true in your specific facility with your specific equipment.
Verification is ongoing. It confirms that the plan is being followed day to day. Examples include reviewing monitoring records, calibrating thermometers and scales, directly observing employees as they perform monitoring tasks, and periodically sampling products for testing. A plan can be perfectly validated but still fail if no one is verifying that workers are actually following it.
Reassessment is a periodic review of the entire plan to determine whether it still fits. Changes in ingredients, equipment, suppliers, or production volume can all create new hazards or make existing controls inadequate.
What HACCP Records Look Like
The documentation requirements are detailed. Facilities must maintain the written hazard analysis with all supporting evidence, the HACCP plan itself (including the reasoning behind each CCP and critical limit), and ongoing records for every monitored CCP. Those monitoring records must include actual measured values, not just checkmarks. Actual times, temperatures, or other quantifiable data are required.
Corrective action records, calibration logs for monitoring instruments, verification results, and product identification codes must also be kept. Every entry has to be made at the time the event occurs, include the date and time, and be signed or initialed by the employee who made it. This level of specificity exists so that if a problem surfaces weeks or months later, investigators can trace exactly what happened, when, and who was responsible for each step.
HACCP Beyond Food
While HACCP was designed for food safety, its logic applies to any process where preventing contamination is more effective than detecting it afterward. Healthcare institutions have adopted HACCP principles for infection control, medication safety, and the assembly of reusable medical devices like surgical instruments. The framework provides a structured way to identify where contamination risks exist in a multi-step process and build safeguards at those specific points, which translates well beyond the kitchen or processing plant.