What is HACCP and how is it implemented in a food production facility?

Any facility that produces, processes, packages, or distributes food has the same fundamental obligation: to place safe products on the market. HACCP is the internationally recognized system through which this obligation becomes a controllable, verifiable, and documented process, rather than a mere hope. Find out in this article what HACCP is, the legal framework it relies on, its 7 principles and 12 implementation steps, and how to build it, step by step, in a food production facility.

What is HACCP?

HACCP is the acronym for Hazard Analysis and Critical Control Points. It is a preventive food safety management system that identifies biological, chemical, and physical hazards that may affect the product and establishes control measures at points where these hazards can be eliminated or reduced to an acceptable level.

Unlike classic quality control, which checks the finished product (too late to correct anything), HACCP is proactive: it prevents problems from arising throughout the entire flow, from the reception of raw materials to delivery. The system was originally developed to ensure the safety of food intended for space missions and was later adopted by the Codex Alimentarius as an international reference standard.

The HACCP legal framework: obligations for food facilities

In the European Union, HACCP is not optional. Regulation (EC) No 852/2004 on the hygiene of foodstuffs requires all food business operators – regardless of size or type – to develop, implement, and maintain permanent procedures based on HACCP principles. Only primary producers are exempt, though they too have hygiene and good practice obligations.

The framework is completed by Regulation (EC) No 178/2002 (general food law, which introduces the principle of traceability and risk analysis), related hygiene regulations, and, at the national level, the norms issued and controlled by the ANSVSA (National Sanitary Veterinary and Food Safety Authority) and its county directorates. The ISO 22000 standard (food safety management systems) integrates HACCP principles into a broader management framework, and private schemes (IFS, BRCGS, FSSC 22000) use them as a foundation for certification.

Prerequisite programs: the foundation upon which HACCP is built

HACCP does not work in a vacuum. It relies on Prerequisite Programs (PRPs), i.e., Good Hygiene Practices (GHP) and Good Manufacturing Practices (GMP) that create a safe basic environment. Without them, the HACCP plan becomes impossible to apply. The main prerequisite programs include:

• Design and maintenance of premises and equipment – separate "dirty-clean" flows, surfaces easy to sanitize, prevention of cross-contamination;
• Cleaning and disinfection program – clear procedures, disinfection products suitable for the food industry, frequencies, responsibles, and verification;
• Pest control (DDD) – disinfestation, deratization, disinfection, with contract and records;
• Personnel hygiene – protective equipment, hand hygiene, health status, training;
• Water control – potability, prevention of contamination;
• Waste management – collection, storage, disposal;
• Traceability and product recall – batch identification and rapid withdrawal in case of risk;
• Supplier and raw material control – qualified reception, specifications, certificates.

The 7 HACCP principles

The HACCP system is built on seven principles defined by the Codex Alimentarius:

1. Hazard analysis – identifying all biological, chemical, and physical hazards (plus allergens) associated with each stage of the process and evaluating their risk.
2. Determination of Critical Control Points (CCP) – the stages where control is essential to prevent, eliminate, or reduce a hazard to an acceptable level.
3. Establishment of critical limits – measurable values (temperature, time, pH, concentration, etc.) that separate the acceptable from the unacceptable at each CCP.
4. CCP monitoring – scheduled observation or measurement confirming that each CCP remains under control.
5. Corrective actions – the measures taken when monitoring shows a deviation from the critical limit.
6. Verification – the activities (audit, calibration, laboratory tests) that confirm the HACCP system is working correctly.
7. Documentation and records – written evidence that the system is correctly designed and consistently applied.

Read also this guide on disinfection in the food industry!

The 12 steps of HACCP system implementation

Codex Alimentarius recommends a sequence of 12 steps, of which the first five are preparatory, and the last seven correspond to the 7 principles applied in practice.

1. Formation of the HACCP team – a multidisciplinary team (production, quality, maintenance, hygiene) possessing the necessary expertise.
2. Product description – composition, physical-chemical characteristics, packaging, storage conditions, shelf life.
3. Identification of intended use – how and by whom the product will be consumed, including vulnerable groups.
4. Construction of the flow diagram – representation of all process stages, from reception to shipment.
5. On-site verification of the flow diagram – confirmation that the diagram corresponds to the reality in the facility.
6. Hazard analysis (Principle 1) – listing and evaluating hazards at each stage and establishing control measures.
7. Determination of CCPs (Principle 2) – usually with the help of a decision tree.
8. Establishment of critical limits (Principle 3) – for each CCP.
9. Establishment of the monitoring system (Principle 4) – what, how, when, and who measures.
10. Establishment of corrective actions (Principle 5) – for each potential deviation.
11. Establishment of verification procedures (Principle 6) – internal audits, tests, reviews.
12. Establishment of documentation and records (Principle 7) – the HACCP manual, procedures, and record forms.

Types of food safety hazards

Hazard analysis, the heart of the system, covers four categories:

• Biological hazards – pathogenic bacteria (Salmonella, Listeria, E. coli, Campylobacter), viruses, parasites, molds. These are the most common causes of illness.
• Chemical hazards – pesticide residues, mycotoxins, heavy metals, cleaning and disinfection product residues, migration from packaging.
• Physical hazards – foreign bodies: glass, metal, plastic, bone, stones, equipment debris.
• Allergens – often treated separately due to the serious risk to sensitive individuals (gluten, milk, eggs, peanuts, tree nuts, soy, etc.); require strict control of cross-contamination and correct labeling.

Download this free practical guide to hygiene and disinfection for food processing units!

HACCP documentation and records

As with any safety system, what is not documented is considered not done. A functional HACCP system includes: the HACCP manual (hazard analysis, plan with CCPs, limits, monitoring, corrective actions), prerequisite program procedures, and current records – temperature monitoring sheets, cleaning and disinfection charts, DDD records, analysis reports, staff training records, internal audit reports, and records of corrective actions. These records must be completed in real-time, signed, and kept according to legal requirements to be available for ANSVSA inspections.

How to implement HACCP step-by-step in a food production facility

Beyond theory, practical implementation follows a clear path:

1. Management commitment – allocating resources and designating responsibles; without management support, the system remains on paper.
2. Team training – training the HACCP team and staff on good hygiene practices.
3. Implementation of prerequisite programs – hygiene, cleaning and disinfection, DDD, traceability, water and supplier control.
4. Going through the 12 steps – from product description to the complete HACCP plan.
5. Validation and verification – confirming that control measures work (validation) and that the system is correctly applied (verification).
6. Continuous training and internal audit – maintaining competencies and identifying non-conformities before inspections.
7. Periodic review – updating the system for any change in process, product, equipment, or legislation.

HACCP is more than a legal requirement: it is the method by which a food production facility transforms safety from a coincidence into a controlled process. Built on the foundation of prerequisite programs, the 7 principles applied through the 12 steps provide a preventive, verifiable, and documented system that protects both the consumer and the business. The key to success lies not in paperwork, but in adapting the plan to the real process, in solid prerequisite programs, and in a trained team that applies the system day by day.