Working in the food industry means that food safety is always at the top of the agenda. One of the most fundamental concepts in this field is the critical control point, better known as a CCP. Whether you are completing an HACCP training or have been working with HACCP systems for years, a solid understanding of CCPs is essential for everyone responsible for safe food production.
In this article, we answer the most frequently asked questions about critical control points: what they are, how you identify them, how they differ from other control mechanisms, and how to effectively document and monitor them.
What is a critical control point (CCP)?
A critical control point (CCP) is a step in the production process where a control measure is essential to prevent, eliminate, or reduce a food safety hazard to an acceptable level. Without control at this point, there is a real risk of dangerous food that could harm consumers.
CCPs form the core of the HACCP system (Hazard Analysis and Critical Control Points), an internationally recognised method for managing food safety risks. Classic examples of CCPs include the heating process during pasteurisation, which kills pathogens, or the detection of metal particles via a metal detector at the end of a production line. It always concerns a point at which you can actively intervene and control the hazard.
Why are critical control points important for food safety?
Critical control points are important because they form the last line of defence against hazards that can make consumers seriously ill. They ensure that risks are not left to chance, but are systematically monitored and documented within the HACCP plan.
Without CCPs, a production process would rely on spot checks or end-product testing, which is unreliable and costly. By embedding CCPs into the process itself, you intervene at the moment it truly matters. This protects not only consumers, but also the reputation and regulatory compliance of an organisation. Legislation in both the UK and the European Union requires food businesses to apply HACCP principles, of which CCPs are an integral part.
How do you identify a critical control point in practice?
You identify a critical control point by working through the HACCP decision tree for each step in the production process. This involves asking targeted questions about the nature of the hazard, the possibility of control, and the consequences if control is not applied.
The practical steps are as follows:
- Identify the hazard: Is there a biological, chemical, or physical hazard present at this process step?
- Assess the severity: Is the hazard serious enough to pose a food safety risk?
- Determine whether control is possible: Can you intervene at this point to eliminate or reduce the hazard?
- Check whether a later step resolves the hazard: If a subsequent step still eliminates the hazard, this point may not be a CCP.
A point is a CCP if the answers to all these questions indicate that control here is both necessary and possible, and that no safety net follows afterwards. It is important to document this process so that the reasoning behind each decision remains traceable.
What is the difference between a CCP and an oPRP?
The difference between a CCP and an oPRP (operational prerequisite programme) lies in the degree of criticality and the direct relationship with a specific hazard. A CCP controls a hazard that poses a direct and serious risk to the consumer. An oPRP controls conditions that contribute to food safety, but where a deviation does not directly result in an unsafe product.
A concrete example: cooking meat to a minimum temperature is a CCP, because a deviation can directly mean that pathogens survive in the product. Cleaning a work surface is an oPRP, because it contributes to hygiene, but a single shortcoming does not automatically result in a dangerous product. Both are essential within a food safety system, but require a different approach in terms of monitoring and documentation. This distinction is explicitly made in ISO 22000 and FSSC 22000.
What critical limits apply to a control point?
Critical limits are the measurable values that indicate whether a CCP is under control. They define the difference between a safe and a potentially unsafe product and must be scientifically substantiated and established in advance.
Examples of critical limits include:
- Temperature: a minimum core temperature of 75 degrees Celsius when heating poultry
- Time: a minimum heating time of 15 seconds during pasteurisation
- pH value: a maximum pH of 4.6 for acidic products to prevent botulism
- Water activity: a maximum water activity of 0.85 for certain dried products
Critical limits must not be confused with operational limits, which serve as an additional safety margin. If an operational limit is exceeded, you take action before the critical limit is at risk. Exceeding a critical limit always requires a corrective action and documentation.
How do you document and monitor critical control points?
You document and monitor critical control points by setting up a system for continuous or periodic measurements, recording results, and establishing a clear procedure for corrective actions in the event of deviations. Documentation is not only a legal requirement, but also the foundation for verification and improvement.
Monitoring
Monitoring means measuring at fixed intervals or continuously whether the critical limits are being met. This can be done via automatic sensors, manual temperature measurements, or visual inspections, depending on the type of CCP. It is important that the monitoring method is reliable, fast, and traceable.
Recording and corrective actions
All measurement results are recorded in logbooks or digital systems. When a critical limit is exceeded, a corrective action must be carried out: the product may be held back, the process is stopped or adjusted, and the cause is investigated. All these steps are documented, including who carried out the action and when.
A well-structured documentation system also makes it easier to pass audits and train employees in the correct procedures. This brings us to a practical challenge that many organisations face: how do you ensure that all employees, including new or temporary staff, know the CCP procedures and carry them out correctly?
How E-lia supports HACCP training and CCP knowledge
We understand that food safety knowledge must not only exist on paper, but must genuinely reach the people on the shop floor. Particularly for topics such as critical control points, where precision and awareness make all the difference, E-lia offers an effective solution through microlearning via WhatsApp.
This is what we offer for organisations in the food industry:
- Short, focused modules on HACCP topics such as CCPs, critical limits, and corrective actions, which employees complete in 3 to 6 minutes
- No app or login required, so that even employees with limited digital experience can participate easily
- Automatic translations, ideal for multilingual teams on the shop floor
- Progress monitoring via a dashboard, so you always know who has completed the training
- Fast module creation averaging 10 to 15 minutes, allowing you to respond quickly to new procedures or audit requirements
Whether you want to offer an HACCP course to new employees or upskill existing teams on CCP procedures, we make it simple, accessible, and effective. Get in touch with us and discover how we can support your organisation with smart HACCP training via WhatsApp.
Frequently Asked Questions
How many CCPs can a HACCP plan contain at most?
There is no set maximum, but a good HACCP plan generally contains as few CCPs as possible — only the points where control is truly critical and necessary. A large number of CCPs may indicate that the prerequisite programme (PRP) has not been sufficiently developed. If you find that you have identified dozens of CCPs, it is advisable to critically work through the decision tree again and assess whether some points would be better classified as oPRPs.
What should I do if a product has exceeded the critical limit but has already been dispatched?
In that case, you must immediately initiate a recall procedure, in accordance with the legal obligations under the European General Food Law Regulation (EC 178/2002). Notify the competent authorities, trace the affected batches via your traceability system, and document all steps accurately. This underlines why a robust traceability system and rapid monitoring procedures are so essential as a complement to your CCP monitoring.
How often should a HACCP plan with CCPs be reviewed?
A HACCP plan must be reviewed whenever there is a significant change in the production process, ingredients, equipment, or legislation. In addition, a periodic review — at least annually — is a widely recognised best practice. Grounds for an interim review may also include a trend of deviations, a consumer complaint, or an audit that identifies shortcomings.
Can small food businesses also work with CCPs, or is HACCP only for large producers?
HACCP principles, including working with CCPs, are legally required for all businesses in the food chain within the EU, regardless of their size. Small businesses may make use of simplified, HACCP-based procedures tailored to their scale and complexity. The relevant national food safety authority provides guidance on this and recognises sector-specific hygiene codes as an alternative to a fully developed HACCP plan.
What is a common mistake when establishing critical limits?
A common mistake is using operational limits as critical limits, which eliminates the margin for corrective actions and makes the system overly sensitive to false alarms. Another frequent error is applying critical limits without scientific substantiation — for example, based on experience rather than microbiological data or regulatory standards. Always ensure that critical limits are traceable to scientific sources, legal requirements, or validated industry standards.
How do I quickly train new or temporary employees in my company's CCP procedures?
The biggest challenge with temporary or new employees is transferring company-specific CCP procedures quickly and reliably, without compromising on quality. Microlearning methods — such as short modules via WhatsApp, as offered by E-lia — are particularly effective for this purpose, as employees can work through the material at their own pace and in their own language. Combine this with a practical introduction on the shop floor and ensure that progress is tracked, so that you can demonstrate during an audit that all employees have been verifiably trained.
What is the difference between verification and validation of a CCP?
Validation proves in advance that a control measure at a CCP is actually capable of controlling the hazard — for example, by demonstrating through scientific research or challenge tests that a specific temperature effectively eliminates pathogens. Verification is the ongoing check of whether the system is working as intended in practice, such as periodically calibrating thermometers or reviewing monitoring records. Both are required within a HACCP system, but in practice they are still regularly confused with one another.
