5.2 The 7 Principles of HACCP Implementation

Hazard Analysis and Critical Control Point (HACCP) is a systematic, preventive approach to food safety. Rather than relying solely on end-product testing, HACCP focuses on identifying potential hazards throughout the food production process and implementing controls to prevent them. This proactive methodology is globally recognized and often legally mandated for food businesses.

Prerequisites for HACCP

Before a HACCP plan can be effectively developed and implemented, a solid foundation of prerequisite programs must be established. These programs provide the basic environmental and operating conditions necessary for the production of safe food.

Good Hygiene Practices (GHPs) and Standard Sanitation Operating Procedures (SSOPs)

• GHPs: These encompass the fundamental practices necessary for food safety, including personal hygiene, handwashing protocols, pest control, and staff training. If staff are not washing their hands properly, a HACCP plan will ultimately fail, as the baseline level of hygiene is compromised.
• SSOPs: These are documented, step-by-step procedures for cleaning and sanitizing equipment and facilities. They detail what needs to be cleaned, how it should be cleaned, what chemicals to use, and how frequently the task must be performed.

Without these robust prerequisite programs in place, a HACCP plan would be overwhelmed by trying to control basic, preventable hazards at every step of the process.

The 7 Principles of HACCP

The core of the HACCP system consists of seven established principles. Developing a plan requires a multidisciplinary HACCP team to systematically work through these steps.

Principle 1: Conduct a Hazard Analysis

The first step involves identifying all potential biological, chemical, physical, and allergenic hazards associated with each step of the food production process, from receiving ingredients to final service. The team assesses the likelihood and severity of each hazard (as discussed in Section 5.1) to determine which are significant enough to warrant inclusion in the HACCP plan.

Principle 2: Determine Critical Control Points (CCPs)

A Critical Control Point (CCP) is a specific step in the process where a control measure can be applied, and is absolutely essential to prevent, eliminate, or reduce a significant food safety hazard to an acceptable level.

• Control Point (CP) vs. Critical Control Point (CCP): This is a vital distinction. A CP is any point where control can be applied (e.g., storing dry goods in a cool, dry place to maintain quality). A CCP is a step where lack of control will almost certainly result in a food safety hazard (e.g., the cooking step for raw chicken, where the temperature must reach a specific level to kill Salmonella).
• Decision Trees: HACCP teams often use a series of structured questions (a decision tree) to objectively determine if a specific step is a CCP.

Principle 3: Establish Critical Limits

For every CCP identified, critical limits must be established. A critical limit is a maximum or minimum value to which a biological, chemical, or physical parameter must be controlled. If the process operates within these limits, the hazard is controlled. If the limit is breached, the product is potentially unsafe.

• Example: For the CCP of cooking a hamburger patty, the critical limit might be a minimum internal temperature of 75°C (167°F) for at least 2 minutes.

Principle 4: Establish Monitoring Procedures

Monitoring involves scheduled observations or measurements to determine if a CCP is under control and operating within its critical limits. The procedures must define:

• What will be monitored (e.g., internal temperature).
• How it will be monitored (e.g., using a calibrated probe thermometer).
• When/How often it will be monitored (e.g., every batch, or every 2 hours).
• Who will perform the monitoring (e.g., the line chef).

Principle 5: Establish Corrective Actions

Corrective actions are the specific steps that must be taken immediately when monitoring indicates that a critical limit has been breached (a deviation has occurred). The action must ensure that no unsafe food reaches the consumer and that the process is brought back under control.

• Scenario: The monitoring procedure reveals that a batch of chicken soup is holding at 55°C instead of the critical limit of >60°C.
• Corrective Action: The soup must be rapidly reheated to 75°C (to destroy any bacteria that may have multiplied) before being returned to hot holding, and the holding equipment must be checked for faults.

Principle 6: Establish Verification Procedures

Verification involves activities, other than monitoring, that determine the validity of the HACCP plan and ensure the system is operating according to the plan. This answers the question: "Is the HACCP plan working?"

• Examples: Calibrating thermometers, reviewing monitoring records, microbiological testing of end products, and internal audits of the entire system.

Principle 7: Establish Recordkeeping and Documentation

A HACCP system requires robust documentation. If it isn't documented, it didn't happen. Records provide evidence that the plan is being followed and that critical limits are being met.

• Examples: Temperature logs, corrective action reports, training records, and the written HACCP plan itself. Accurate records are crucial during health inspections or in the event of a foodborne illness investigation.

Comprehensive Application of the 7 HACCP Principles

To successfully implement a HACCP system under MOPH guidelines, food businesses must systematically execute all seven principles:

1. Principle 1: Conduct a Hazard Analysis: Identify potential biological, chemical, physical, and allergenic hazards at every step of the operational flow, from receiving to service.
2. Principle 2: Determine Critical Control Points (CCPs): Identify operational steps where control can be applied to prevent, eliminate, or reduce a hazard to an acceptable level (e.g., cooking raw chicken to 75°C).
3. Principle 3: Establish Critical Limits: Define maximum or minimum boundary values for each CCP (e.g., core temperature >= 75°C held for at least 30 seconds).
4. Principle 4: Establish Monitoring Procedures: Implement scheduled observations and measurements (e.g., measuring meat core temperature with a calibrated probe thermometer).
5. Principle 5: Establish Corrective Actions: Define pre-determined corrective steps if monitoring indicates a critical limit has been breached (e.g., continue cooking meat until 75°C is reached, or discard food held in the danger zone for over 4 hours).
6. Principle 6: Establish Verification Procedures: Perform regular audits, calibrate thermometers, and review monitoring logs to confirm the HACCP plan is functioning effectively.
7. Principle 7: Establish Recordkeeping and Documentation: Maintain written records including hazard analyses, CCP logs, calibration records, and corrective action reports.