Implementing PRPs for Effective Food Safety Management

Food safety doesn’t happen by accident. Behind every safe food product is a foundation of essential practices that control hazards before they become problems. These practices are known as Prerequisite Programmes, or PRPs, and they form the cornerstone of effective food safety management. Understanding and implementing robust PRPs is crucial for any food business, whether you’re a small producer or a large manufacturer.

What are prerequisite programmes? 🔗

Prerequisite Programmes are the basic conditions and activities necessary to maintain a hygienic environment throughout the food chain, suitable for producing safe food. Think of PRPs as creating a clean canvas before painting. They establish the fundamental environmental and operational conditions that must be in place before implementing more specific food safety controls like HACCP.

Unlike Critical Control Points that address specific hazards at particular steps, PRPs provide baseline practices that prevent contamination or hazards from emerging in the first place. They assist in controlling the likelihood of hazards entering the product and contaminating the processing environment.

The Codex framework for PRPs 🔗

The Codex Alimentarius Commission’s General Principles of Food Hygiene provides the internationally recognized framework for PRPs. This comprehensive guide categorizes PRPs into eight essential components that collectively ensure food safety throughout the supply chain.

Primary production 🔗

Food safety begins at the source. Primary production refers to the initial stages of the food chain, including farming, harvesting, and initial handling of raw materials. At this stage, PRPs focus on ensuring the production environment doesn’t introduce hazards that could compromise food safety later.

Key considerations include environmental hygiene, such as avoiding areas where environmental contaminants could lead to unacceptable levels in food. This means not locating production near polluted areas or sources of contamination. Producers must also control contaminants from soil, water, fertilizers, pesticides, and veterinary drugs, while protecting food sources from fecal contamination and managing waste appropriately.

For example, a vegetable farm would implement water quality testing, proper fertilizer application, and pest management strategies to ensure produce is grown under hygienic conditions.

Establishment design and facilities 🔗

The physical infrastructure where food is processed plays a critical role in preventing contamination. Well-designed facilities minimize cross-contamination risks and facilitate proper hygiene practices.

Location and layout 🔗

Food establishments should be located away from environmental hazards that cannot be controlled through reasonable measures. The layout must facilitate a logical flow of operations that prevents cross-contamination. Areas with different hygiene levels, such as raw material and finished product zones, should be physically separated or controlled through other means like one-directional flow or time separation.

Internal structures 🔗

Buildings should be constructed with durable, easy-to-clean materials that don’t harbor contamination. Walls, floors, and ceilings must have smooth surfaces made of impervious materials that can be effectively cleaned and disinfected. Equipment should be designed for easy cleaning and maintenance, made from non-toxic materials suitable for food contact.

Facilities and utilities 🔗

Adequate facilities are essential for maintaining hygiene. This includes proper drainage and waste disposal systems, cleaning facilities with hot and cold water, personnel hygiene facilities including handwashing stations and toilets, and appropriate temperature control equipment for heating, cooling, and storing food. Ventilation systems must control airborne contamination, temperatures, and humidity levels.

Control of operation 🔗

Operational controls ensure that food production processes maintain safety and suitability throughout processing. This category addresses how food is actually handled and processed within the facility.

Time and temperature control 🔗

Inadequate time and temperature control during cooking, cooling, processing, and storage are among the most common failures in food operations. Systems must be in place to ensure temperature is controlled effectively where it impacts food safety, with monitoring and recording of critical parameters.

Contamination prevention 🔗

Systems must prevent microbiological, physical, chemical, and allergen contamination. This includes separating raw and ready-to-eat foods, thorough cleaning and disinfection of food contact surfaces, preventing physical hazards like glass or metal fragments, controlling chemical contaminants, and managing allergens to prevent cross-contact.

Incoming materials and packaging 🔗

Only raw materials and ingredients fit for purpose should be used. Suppliers should be evaluated, and incoming materials inspected for safety and suitability. Packaging must be safe for food contact and provide adequate protection from contamination.

Establishment maintenance and sanitation 🔗

Effective cleaning, sanitation, and maintenance prevent contamination from accumulating in the processing environment.

Cleaning and disinfection 🔗

Written cleaning and disinfection procedures should specify areas to be cleaned, methods and frequency, and monitoring activities. The effectiveness of cleaning programs must be verified through visual inspections, testing, and other appropriate measures.

Pest control 🔗

Pests pose a major threat to food safety. Good building design and maintenance prevent pest access and eliminate breeding sites. Regular monitoring for pest activity is essential, and any infestations must be addressed immediately without compromising food safety.

Waste management 🔗

Waste should be collected and stored in covered, pest-proof containers that are easily identifiable and kept appropriately clean. Waste storage areas must be located away from processing areas to prevent contamination.

Personal hygiene 🔗

Personnel who handle food can be a significant source of contamination if proper hygiene practices aren’t followed. Food businesses must establish policies and procedures for personal hygiene, ensuring all personnel understand and comply with practices that ensure food safety.

Health status and illness 🔗

Personnel known or suspected to carry illnesses transmissible through food must not enter food handling areas. Symptoms such as diarrhea, vomiting, fever, jaundice, or infected wounds should be reported to management immediately. Cuts and wounds must be covered with waterproof dressings, and affected personnel may need to be assigned to areas with no direct food contact.

Personal cleanliness and behavior 🔗

Personnel must maintain high standards of personal cleanliness, wear appropriate protective clothing, and wash hands regularly, especially after using the toilet, handling contaminated materials, or before starting food handling activities. Behaviors that could contaminate food, such as smoking, eating, or touching the nose or mouth in food areas, must be prevented.

Transportation 🔗

Food can become contaminated during transport even if adequate hygiene practices were taken earlier in the food chain. Conveyances and containers must be designed and maintained to prevent contamination, provide protection from damage, and maintain appropriate temperature and environmental conditions.

Vehicles used for transporting food should not contaminate products, can be effectively cleaned and disinfected, permit separation of different foods, and maintain required temperatures. Regular maintenance and cleaning between loads are essential, especially when the same vehicle transports different types of food.

Product information and consumer awareness 🔗

Adequate information must accompany food products throughout the supply chain. Each food container should be permanently marked to identify the producer and lot for traceability purposes. Labels must provide clear instructions for handling, storage, and preparation, including allergen information.

Consumer education programs should cover general food hygiene principles, helping consumers understand the importance of label information and appropriate food handling practices at home, including proper hand washing, adequate storage and cooking temperatures, and avoiding cross-contamination.

Training and competence 🔗

Training is fundamentally important to any food hygiene system. All personnel involved in food operations must have sufficient understanding of food hygiene appropriate to their roles. Training programs should be designed considering the nature of hazards, the manner of food handling, and the type of food being processed.

Training topics should include principles of food hygiene, specific control measures relevant to the business, importance of personal hygiene, good hygiene practices, and appropriate actions when problems are observed. Training effectiveness should be periodically assessed, with routine supervision and refresher training provided as needed.

Integration with food safety management systems 🔗

PRPs provide the foundation upon which more specific food safety controls are built. Before assessing risks or identifying critical control points, organizations must have strong hygiene and operational conditions in place. In ISO 22000, PRPs work together with Operational Prerequisite Programmes and Critical Control Points to create a comprehensive food safety management system.

While PRPs address general conditions and reduce the likelihood of hazards occurring, some hazards require more specific controls. When the implementation of good hygiene practices alone is not sufficient to ensure food safety, additional controls through HACCP become necessary.

What do you think? How well does your organization’s current infrastructure and practices align with these prerequisite programme categories? Which area would benefit most from strengthening in your food safety system?

References

1. https://www.iso.org/home/insights-news/resources/iso-22000-explained.html
2. https://rigcert.education/resources/what-are-prerequisite-programmes-prps-in-iso-22000
3. https://www.fao.org/fao-who-codexalimentarius/sh-proxy/en/?lnk=1&url=https://workspace.fao.org/sites/codex/Standards/CXC+1-1969/CXC_001e.pdf