Hazard Analysis and Critical Control Point (HACCP) is a preventive food safety system designed to identify biological, chemical and physical hazards and establish controls at points where those hazards can be prevented, eliminated or reduced to acceptable levels. During an inspection or audit, however, having a documented HACCP plan is only one component of demonstrating an effective system.
Inspectors and auditors may evaluate whether the hazard analysis accurately reflects the facility’s products and processes, whether Critical Control Points (CCPs) and critical limits are appropriate, whether monitoring is performed as prescribed, and whether deviations result in effective corrective action. Prerequisite programs, verification activities, employee training and records may also be reviewed to determine whether the HACCP system is functioning as intended.
Recent recalls involving Listeria monocytogenes, Salmonella, undeclared allergens and physical contaminants illustrate the types of hazards food safety systems are expected to control.
Effective HACCP implementation therefore requires more than developing a plan. It requires ongoing monitoring, verification, documentation and personnel who understand their responsibilities within the system.
Learn more about dicentra’s HACCP Online Training and strengthen your food safety program.
Hazard Analysis and Critical Control Point (HACCP) is a systematic approach to identifying and controlling food safety hazards throughout food production. Unlike approaches that rely primarily on finished-product testing, HACCP focuses on preventing food safety problems by identifying significant hazards and establishing controls within the production process.
The internationally recognized Codex HACCP framework consists of five preliminary steps followed by seven principles. The preliminary steps include assembling the HACCP team, describing the product, identifying its intended use, constructing a process flow diagram and confirming that flow onsite. The seven principles then address hazard analysis, determination of Critical Control Points, establishment of critical limits, monitoring, corrective action, verification and recordkeeping.
The effectiveness of a HACCP system also depends on the prerequisite programs supporting it. These programs establish the basic operating and environmental conditions necessary for safe food production and may address areas such as sanitation, equipment maintenance, personnel practices, supplier approval, allergen control, pest management, transportation, storage, traceability and recall.
The regulatory application of HACCP varies according to product and jurisdiction. In the United States, for example, FDA has specific HACCP regulations for seafood and juice, while USDA’s Food Safety and Inspection Service (FSIS) applies HACCP requirements to federally inspected meat and poultry establishments. Other FDA-regulated food facilities may instead operate under the preventive controls requirements established by the Food Safety Modernization Act (FSMA). In Canada, preventive control requirements under the Safe Food for Canadians Regulations incorporate many of the same internationally recognized risk-based food safety principles.
Regardless of the applicable regulatory framework, the underlying expectation is similar: food safety hazards must be identified, appropriate controls must be established, and the organization must be able to demonstrate that those controls are functioning.
A HACCP inspection or audit is not necessarily limited to reviewing the written HACCP plan. The assessment may extend to the prerequisite programs, operational practices and records that demonstrate whether the system has been properly implemented.
An inspector or auditor may begin by reviewing the product description, intended use, process flow and hazard analysis. The assessment may then examine whether biological, chemical and physical hazards have been appropriately considered at each relevant process step and whether significant hazards have suitable control measures.
Where CCPs have been established, the review may examine the rationale for selecting those points, the scientific or regulatory basis for the critical limits, monitoring procedures, corrective-action requirements and verification activities.
The assessment may also extend into the facility itself. Actual production practices can be compared with the written procedures and process flow to determine whether the HACCP plan accurately reflects current operations.
Supporting prerequisite programs may also fall within scope. Depending on the facility and applicable requirements, these can include:
This relationship between written procedures and actual operations is fundamental to HACCP implementation. Documentation establishes what the organization intends to do, while records and onsite observations demonstrate whether those procedures are consistently followed.
A Hazard Analysis That Reflects the Actual Operation
Hazard analysis is the foundation of the HACCP system. Biological, chemical and physical hazards should be considered in relation to ingredients, processing activities, equipment, storage and other relevant stages of production.
The analysis should also determine which hazards are significant based on factors such as likelihood and severity and identify the measures available to control them.
For this reason, hazard analysis must be specific to the operation. Differences in formulation, processing parameters, equipment, suppliers, packaging, storage conditions or intended consumers can affect both the hazards present and the controls required.
Changes to the operation can therefore require reassessment. New ingredients, suppliers, equipment, processing methods, production volumes or intended consumers may introduce hazards that were not considered when the original plan was developed.
Appropriate CCPs and Critical Limits
A Critical Control Point is a step at which control can be applied and is essential to preventing or eliminating a food safety hazard or reducing it to an acceptable level.
Not every control measure is a CCP. The HACCP team must determine where control is essential and establish critical limits that clearly distinguish acceptable from unacceptable operating conditions.
Critical limits should be measurable or otherwise objectively assessable and supported by an appropriate scientific, regulatory or technical basis. Depending on the process, these may involve factors such as temperature, time, pH, water activity or other parameters directly related to control of the identified hazard.
An inadequately supported critical limit can create a significant weakness in the HACCP system because meeting the limit does not necessarily demonstrate that the hazard is being effectively controlled.
Consistent Monitoring
Once a CCP and critical limit have been established, the facility needs a monitoring procedure capable of determining whether the CCP remains under control.
Monitoring procedures should define what is monitored, how monitoring is performed, when or how frequently it occurs and who is responsible. The monitoring method and frequency should be capable of detecting a loss of control in time for the facility to take appropriate action and control potentially affected product.
Personnel assigned to monitoring activities should understand the applicable critical limits, how measurements are performed, how results are documented and what action is required when a deviation occurs.
Monitoring records are particularly important because they provide contemporaneous evidence of control. Missing entries, unexplained values, inconsistent monitoring frequencies or records completed after the fact can make it difficult to demonstrate that the process was operating within established limits.
Effective Corrective Actions
A deviation occurs when monitoring indicates that a critical limit has not been met. The HACCP system should establish how these situations will be managed.
Corrective action may require both restoring control of the process and determining the appropriate disposition of affected product. Depending on the circumstances, this could involve stopping production, adjusting equipment, placing product on hold, evaluating product safety, reprocessing affected product where appropriate or disposing of it.
The corrective-action record should provide sufficient information to understand what occurred, what product may have been affected, how control was restored and how the product was handled.
Repeated deviations can also indicate a broader problem. If the same issue continues to occur, simply correcting each individual deviation may not be sufficient. The facility may need to investigate the underlying cause and determine whether the HACCP plan, equipment, process or supporting procedures require modification.
Verification and Validation
Monitoring determines whether a CCP is operating within its critical limits. Verification provides additional assurance that the HACCP system is being implemented according to the plan and continues to function effectively.
Verification activities can include reviewing CCP monitoring records, reviewing corrective actions, calibrating monitoring equipment, observing employees performing monitoring activities and conducting other checks established by the HACCP plan.
Validation addresses whether the control measures and critical limits are capable of controlling the identified hazards when properly implemented. The distinction is important: a facility can consistently follow a procedure, but that procedure must also be scientifically capable of achieving its intended food safety outcome.
HACCP systems should also be reassessed when changes could affect the hazard analysis or control measures. Changes in ingredients, suppliers, equipment, processing conditions, production volumes or intended consumers may alter the risk profile of the operation.
HACCP deficiencies do not always involve the complete absence of a HACCP plan. In practice, weaknesses may occur at individual points throughout the system.
A hazard may not have been identified during the original analysis. A CCP may be established at the wrong process step. A critical limit may lack appropriate scientific support. Monitoring may occur inconsistently or at a frequency insufficient to demonstrate control. A deviation may be documented without adequately addressing affected product. Verification may become a routine signature rather than a meaningful review of whether the system is functioning.
Documentation can also reveal weaknesses. Incomplete monitoring records, missing corrective-action documentation, overdue calibration activities or discrepancies between written procedures and actual production practices can undermine the facility’s ability to demonstrate control.
The consequences of uncontrolled hazards are evident in food recall activity. In September 2026, Canadian recalls included chicken products affected by possible Listeria monocytogenes, peanuts affected by possible Salmonella, and products recalled because of undeclared egg and soy. Physical hazards remain relevant as well, with chopped walnuts recalled because of shell fragments.
These recalls should not, by themselves, be interpreted as evidence of HACCP deficiencies at the affected companies. They do, however, demonstrate the continuing relevance of the biological, chemical and physical hazards that HACCP and other preventive food safety systems are designed to address.
The potential impact can become considerably larger when a hazard moves through a complex supply chain. In 2026, FDA and CDC investigated a multistate Cyclospora outbreak associated with iceberg lettuce sourced from central Mexico. By September 11, 2026, the investigation included 12,883 reported illnesses across 21 states, 570 hospitalizations and two deaths. FDA’s investigation included traceback activities, onsite inspections and sample collection.
Events such as these reinforce the purpose of preventive food safety systems: significant hazards should be identified and controlled before affected food reaches the marketplace.
HACCP depends on personnel being able to perform specific food safety responsibilities consistently and correctly. Training is therefore not separate from HACCP implementation; it supports the operation of the system.
Employees responsible for CCP monitoring need to understand the hazard being controlled, the applicable critical limit, the monitoring procedure and the actions required when a deviation occurs. Personnel responsible for verification need sufficient knowledge to identify incomplete records, inappropriate corrective actions or other indications that the system may not be functioning as intended.
The same principle applies to prerequisite programs. Personnel involved in sanitation should understand the procedures necessary to clean and sanitize equipment and processing environments. Employees handling allergens should understand segregation, labelling, changeover and cross-contact controls. Maintenance personnel should recognize how equipment condition can introduce biological, chemical or physical hazards.
HACCP team members require a broader level of competency because they are responsible for understanding the relationship between the product, process, hazards and control measures. They may also need to determine when operational changes require reassessment of the HACCP plan.
Training should therefore focus not only on what procedures employees must follow, but also on why those procedures are important within the overall food safety system.
dicentra’s HACCP Online Training provides a structured examination of HACCP principles and the prerequisite programs that support an effective food safety system.
The program begins with HACCP fundamentals and the role of food safety management systems before examining prerequisite programs including documentation and records, premises and facilities, transportation and storage, equipment maintenance and calibration, personnel practices, sanitation, pest control, labelling, traceability, recalls and allergen management.
Additional modules address supplier approval, environmental monitoring, food safety and fraud defense, and internal auditing.
The HACCP plan development portion of the course follows the Codex framework, including the five preliminary steps and seven principles of HACCP. Participants examine hazard identification and analysis, biological, chemical and physical hazards, determination of Critical Control Points, establishment of critical limits, monitoring, corrective action, verification, validation and recordkeeping.
The training also addresses ongoing HACCP system management, including reassessment and continuous improvement, helping participants understand that HACCP is not a one-time documentation exercise but a food safety system that must remain aligned with actual operations.
For personnel involved in food safety, quality assurance, production, sanitation, regulatory affairs or HACCP teams, this broader understanding is important for maintaining a system that can consistently identify, evaluate and control significant food safety hazards.
Learn more about dicentra’s HACCP Online Training and how it can support the development and ongoing management of an effective HACCP system.
An effective HACCP system connects hazard analysis, preventive controls, monitoring, corrective action, verification and documentation into a single operating framework.
Each component depends on the others. A properly identified hazard still requires an effective control measure. A scientifically appropriate critical limit must be consistently monitored. Deviations must result in appropriate action. Verification must confirm that the system is functioning as intended, and records must provide evidence that these activities occurred.
The system must also evolve with the operation. Changes to ingredients, suppliers, equipment, processing methods or products can alter the hazards that need to be considered and may require reassessment of existing controls.
For this reason, HACCP should not be treated primarily as a document prepared for an inspection or audit. Its value comes from its continued application as a preventive food safety system, supported by appropriate prerequisite programs and personnel who understand how their responsibilities contribute to maintaining control.