Thursday, March 18, 2021

HACCP

HACCP Hazard Analysis Critical Control Point HACCP

 












The National Advisory Committee on Microbiological Criteria for Foods (Committee) reconvened a Hazard Analysis and Critical Control Point (HACCP) Working Group in 1995.

Introduction

HACCP is a management system in which food safety is addressed through the analysis and control of biological, chemical, and physical hazards from raw material production, procurement and handling, to manufacturing, distribution and consumption of the finished product.

HACCP is designed for use in all segments of the food industry from growing, harvesting, processing, manufacturing, distributing, and merchandising to preparing food for consumption. 

Prerequisite Programs

Prerequisite programs provide the basic environmental and operating conditions that are necessary for the production of safe, wholesome food.

Facilities: The establishment should be located, constructed and maintained according to sanitary design principles. There should be linear product flow and traffic control to minimize cross-contamination from raw to cooked materials.

Supplier Control: Each facility should assure that its suppliers have in place effective GMP and food safety programs.

Specifications: There should be written specifications for all ingredients, products, and packaging materials.

Production Equipment: All equipment should be constructed and installed according to sanitary design principles. Preventive maintenance and calibration schedules should be established and documented.

Cleaning and Sanitation: All procedures for cleaning and sanitation of the equipment and the facility should be written and followed. A master sanitation schedule should be in place.

Personal Hygiene: All employees and other persons who enter the manufacturing plant should follow the requirements for personal hygiene.

Training: All employees should receive documented training in personal hygiene, GMP, cleaning and sanitation procedures, personal safety, and their role in the HACCP program.

Chemical Control: Documented procedures must be in place to assure the segregation and proper use of non-food chemicals in the plant. These include cleaning chemicals, fumigants, and pesticides or baits used in or around the plant.

Receiving, Storage and Shipping: All raw materials and products should be stored under sanitary conditions and the proper environmental conditions such as temperature and humidity to assure their safety and wholesomeness

Traceability and Recall: All raw materials and products should be lot-coded and a recall system in place so that rapid and complete traces and recalls can be done when a product retrieval is necessary.

Pest Control: Effective pest control programs should be in place.

Other examples of prerequisite programs might include quality assurance procedures; standard operating procedures for sanitation, processes, product formulations and recipes; glass control; procedures for receiving, storage and shipping; labelling; and employee food and ingredient handling practices.

 Education and Training

The success of a HACCP system depends on educating and training management and employees in the importance of their role in producing safe foods. This should also include information the control of food borne hazards related to all stages of the food chain. It is important to recognize that employees must first understand what HACCP is and then learn the skills necessary to make it function properly.

 Developing a HACCP Plan

In the development of a HACCP plan, five preliminary tasks need to be accomplished before the application of the HACCP principles to a specific product and process. 

The five preliminary tasks are given below

Assemble the HACCP Team

The first task in developing a HACCP plan is to assemble a HACCP team consisting of individuals who have specific knowledge and expertise appropriate to the product and process. It is the team's responsibility to develop the HACCP plan. The team should be multi disciplinary and include individuals from areas such as engineering, production, sanitation, quality assurance, and food microbiology. The team should also include local personnel who are involved in the operation as they are more familiar with the variability and limitations of the operation. The HACCP team may need assistance from outside experts who are knowledgeable in the potential biological, chemical and/or physical hazards associated with the product and the process.

Describe the food and its distribution

The HACCP team first describes the food. This consists of a general description of the food, ingredients, and processing methods. The method of distribution should be described along with information on whether the food is to be distributed frozen, refrigerated, or at ambient temperature.

 Describe the intended use and consumers of the food

Describe the normal expected use of the food. The intended consumers may be the general public or a particular segment of the population (e.g., infants, immunocompromised individuals, the elderly, etc.).

Develop a flow diagram which describes the process

The purpose of a flow diagram is to provide a clear, simple outline of the steps involved in the process.  In addition, the flow diagram can include steps in the food chain which are before and after the processing that occurs in the establishment. The flow diagram need not be as complex as engineering drawings. A block type flow diagram is sufficiently descriptive. Also, a simple schematic of the facility is often useful in understanding and evaluating product and process flow.

Example of a Flow Diagram for the Production of Frozen Cooked Beef Patties


Verify the flow diagram

The HACCP team should perform an on-site review of the operation to verify the accuracy and completeness of the flow diagram. Modifications should be made to the flow diagram as necessary and documented.

 










HACCP PRINCIPLES

HACCP is a systematic approach to the identification, evaluation, and control of food safety hazards based on the following seven principles:

Principle 1: Conduct a hazard analysis.

Principle 2: Determine the critical control points (CCPs).

Principle 3: Establish critical limits.

Principle 4: Establish monitoring procedures.

Principle 5: Establish corrective actions.

Principle 6: Establish verification procedures.

Principle 7: Establish record-keeping and documentation procedures.

Conduct a hazard analysis (Principle 1)

HACCP team conducts a hazard analysis and identifies appropriate control measures. The purpose of the hazard analysis is to develop a list of hazards which are of such significance that they are reasonably likely to cause injury or illness if not effectively controlled. It is important to consider in the hazard analysis the ingredients and raw materials, each step in the process, product storage and distribution, and final preparation and use by the consumer. When conducting a hazard analysis, safety concerns must be differentiated from quality concerns. A hazard is defined as a biological, chemical or physical agent that is reasonably likely to cause illness or injury in the absence of its control.

The process of conducting a hazard analysis involves two stages. The first, hazard identification. During this stage, the HACCP team reviews the ingredients used in the product, the activities conducted at each step in the process and the equipment used, the final product and its method of storage and distribution, and the intended use and consumers of the product. Based on this review, the team develops a list of potential biological, chemical or physical hazards which may be introduced, increased, or controlled at each step in the production process.

Examples of Questions to be Considered When Conducting a Hazard Analysis

The hazard analysis consists of asking a series of questions which are appropriate to the process under consideration. The purpose of the questions is to assist in identifying potential hazards.

  1. Ingredients
    1. Does the food contain any sensitive ingredients that may present microbiological hazards (e.g., Salmonella, Staphylococcus aureus); chemical hazards (e.g., aflatoxin, antibiotic or pesticide residues); or physical hazards (stones, glass, metal)?
    2. Are potable water, ice and steam used in formulating or in handling the food?
    3. What are the sources (e.g., geographical region, specific supplier)
  2. Intrinsic Factors - Physical characteristics and composition (e.g., pH, type of acidulants, fermentable carbohydrate, water activity, preservatives) of the food during and after processing.
    1. What hazards may result if the food composition is not controlled?
    2. Does the food permit survival or multiplication of pathogens and/or toxin formation in the food during processing?
    3. Will the food permit survival or multiplication of pathogens and/or toxin formation during subsequent steps in the food chain?
    4. Are there other similar products in the market place? What has been the safety record for these products? What hazards have been associated with the products?
  3. Procedures used for processing
    1. Does the process include a controllable processing step that destroys pathogens? If so, which pathogens? Consider both vegetative cells and spores.
    2. If the product is subject to recontamination between processing (e.g., cooking, pasteurizing) and packaging which biological, chemical or physical hazards are likely to occur?
  4. Microbial content of the food
    1. What is the normal microbial content of the food?
    2. Does the microbial population change during the normal time the food is stored prior to consumption?
    3. Does the subsequent change in microbial population alter the safety of the food?
    4. Do the answers to the above questions indicate a high likelihood of certain biological hazards?
  5. Facility design
    1. Does the layout of the facility provide an adequate separation of raw materials from ready-to-eat (RTE) foods if this is important to food safety? If not, what hazards should be considered as possible contaminants of the RTE products?
    2. Is positive air pressure maintained in product packaging areas? Is this essential for product safety?
    3. Is the traffic pattern for people and moving equipment a significant source of contamination?
  6. Equipment design and use
    1. Will the equipment provide the time-temperature control that is necessary for safe food?
    2. Is the equipment properly sized for the volume of food that will be processed?
    3. Can the equipment be sufficiently controlled so that the variation in performance will be within the tolerances required to produce a safe food?
    4. Is the equipment reliable or is it prone to frequent breakdowns?
    5. Is the equipment designed so that it can be easily cleaned and sanitized?
    6. Is there a chance for product contamination with hazardous substances; e.g., glass?
    7. What product safety devices are used to enhance consumer safety?
      • metal detectors
      • magnets
      • sifters
      • filters
      • screens
      • thermometers
      • bone removal devices
      • dud detectors
    8. To what degree will normal equipment wear affect the likely occurrence of a physical hazard (e.g., metal) in the product?
    9. Are allergen protocols needed in using equipment for different products?
  7. Packaging
    1. Does the method of packaging affect the multiplication of microbial pathogens and/or the formation of toxins?
    2. Is the package clearly labelled "Keep Refrigerated" if this is required for safety?
    3. Does the package include instructions for the safe handling and preparation of the food by the end user?
    4. Is the packaging material resistant to damage thereby preventing the entrance of microbial contamination?
    5. Are tamper-evident packaging features used?
    6. Is each package and case legibly and accurately coded?
    7. Does each package contain the proper label?
    8. Are potential allergens in the ingredients included in the list of ingredients on the label?
  8. Sanitation
    1. Can sanitation have an impact upon the safety of the food that is being processed?
    2. Can the facility and equipment be easily cleaned and sanitized to permit the safe handling of food?
    3. Is it possible to provide sanitary conditions consistently and adequately to assure safe foods?
  9. Employee health, hygiene and education
    1. Can employee health or personal hygiene practices impact upon the safety of the food being processed?
    2. Do the employees understand the process and the factors they must control to assure the preparation of safe foods?
    3. Will the employees inform management of a problem which could impact upon safety of food?
  10. Conditions of storage between packaging and the end user
    1. What is the likelihood that the food will be improperly stored at the wrong temperature?
    2. Would an error in improper storage lead to a microbiologically unsafe food?
  11. Intended use
    1. Will the food be heated by the consumer?
    2. Will there likely be leftovers?
  12. Intended consumer
    1. Is the food intended for the general public?
    2. Is the food intended for consumption by a population with increased susceptibility to illness (e.g., infants, the aged, the infirmed, immune compromised individuals)?
    3. Is the food to be used for institutional feeding or the home?

 

After the list of potential hazards is assembled, stage two, the hazard evaluation, is conducted. In stage two of the hazard analysis, the HACCP team decides which potential hazards must be addressed in the HACCP plan. During this stage, each potential hazard is evaluated based on the severity of the potential hazard and its likely occurrence. Severity is the seriousness of the consequences of exposure to the hazard. Considerations of severity (e.g., impact of sequelae, and magnitude and duration of illness or injury) can be helpful in understanding the public health impact of the hazard. Consideration of the likely occurrence is usually based upon a combination of experience, epidemiological data, and information in the technical literature.

Examples of How the Stages of Hazard Analysis are used to Identify and Evaluate Hazards*

Hazard Analysis Stage

Frozen cooked beef patties produced in a manufacturing plant

Product containing eggs prepared for food service

Commercial frozen pre-cooked, boned chicken for further processing

Stage 1 Determine potential Hazard hazards associated

Identification with product

Enteric pathogens (i.e., E. coli O157: H7 and Salmonella)

Salmonella in finished product.

Staphylococcus aureus in finished product.

Stage 2 Hazard Evaluation

Assess severity of health consequences if potential hazard is not properly controlled.

Epidemiological evidence indicates that these pathogens cause severe health effects including death among children and elderly. Under cooked beef patties have been linked to disease from these pathogens.

Salmonellosis is a food borne infection causing a moderate to severe illness that can be caused by ingestion of only a few cells of Salmonella.

Certain strains of S. aureus produce an enterotoxin which can cause a moderate food borne illness.

Determine likelihood of occurrence of potential hazard if not properly controlled.

E. coli O157:H7 is of very low probability and salmonellae is of moderate probability in raw meat.

Product is made with liquid eggs which have been associated with past outbreaks of salmonellosis. Recent problems with Salmonella serotype Enteritidis in eggs cause increased concern. Probability of Salmonella in raw eggs cannot be ruled out.

If not effectively controlled, some consumers are likely to be exposed to Salmonella from this food.

Product may be contaminated with S. aureus due to human handling during boning of cooked chicken. Enterotoxin capable of causing illness will only occur as S. aureus multiplies to about 1,000,000/g. Operating procedures during boning and subsequent freezing prevent growth of S. aureus, thus the potential for enterotoxin formation is very low.

Using information above, determine if this potential hazard is to be addressed in the HACCP plan.

The HACCP team decides that enteric pathogens are hazards for this product.

Hazards must be addressed in the plan.

HACCP team determines that if the potential hazard is not properly controlled, consumption of product is likely to result in an unacceptable health risk.

Hazard must be addressed in the plan.

The HACCP team determines that the potential for enterotoxin formation is very low. However, it is still desirable to keep the initial number of S. aureus organisms low. Employee practices that minimize contamination, rapid carbon dioxide freezing and handling instructions have been adequate to control this potential hazard.

Potential hazard does not need to be addressed in plan.

 

For example, if a HACCP team were to conduct a hazard analysis for the production of frozen cooked beef patties above, enteric pathogens (e.g., Salmonella and verotoxin-producing Escherichia coli) in the raw meat would be identified as hazards. Cooking is a control measure which can be used to eliminate these hazards. The following is an excerpt from a hazard analysis summary table for this product.

  

Step

Potential Hazard(s)

Justification

Hazard to be addressed in plan?
Y/N

Control
Measure(s)

5. Cooking

Enteric pathogens:
e.g., Salmonella,
verotoxigenic-E. coli

enteric pathogens have been associated with outbreaks of food borne illness from undercooked ground beef

Y

Cooking

 

Determine critical control points (CCPs) (Principle 2)

A critical control point is defined as a step at which control can be applied and is essential to prevent or eliminate a food safety hazard or reduce it to an acceptable level. 

One strategy to facilitate the identification of each CCP is the use of a CCP decision tree 

Critical control points are located at any step where hazards can be either prevented, eliminated, or reduced to acceptable levels. Examples of CCPs may include: thermal processing, chilling, testing ingredients for chemical residues, product formulation control, and testing product for metal contaminants.

For example, a specified heat process, at a given time and temperature designed to destroy a specific microbiological pathogen, could be a CCP. Likewise, refrigeration of a precooked food to prevent hazardous microorganisms from multiplying, or the adjustment of a food to a pH necessary to prevent toxin formation could also be CCPs. 

Example I of a CCP Decision Tree

Important considerations when using the decision tree:

  • The decision tree is used after the hazard analysis.
  • The decision tree then is used at the steps where a hazard that must be addressed in the HACCP plan has been identified.
  • A subsequent step in the process may be more effective for controlling a hazard and may be the preferred CCP.
  • More than one step in a process may be involved in controlling a hazard.
  • More than one hazard may be controlled by a specific control measure.



 

 

 

 

 

 

 

 

 

 


Example II of a CCP Decision Tree



 












Establish critical limits (Principle 3)

A critical limit is a maximum and/or minimum value to which a biological, chemical or physical parameter must be controlled at a CCP to prevent, eliminate or reduce to an acceptable level the occurrence of a food safety hazard. A critical limit is used to distinguish between safe and unsafe operating conditions at a CCP.

Each CCP will have one or more control measures to assure that the identified hazards are prevented, eliminated or reduced to acceptable levels. Each control measure has one or more associated critical limits. Critical limits may be based upon factors such as: temperature, time, physical dimensions, humidity, moisture level, water activity (aw), pH, titratable acidity, salt concentration, available chlorine, viscosity, preservatives, or sensory information such as aroma and visual appearance. 

An example is the cooking of beef patties. The process should be designed to ensure the production of a safe product. The hazard analysis for cooked meat patties identified enteric pathogens (e.g., verotoxigenic E. coli such as E. coli O157:H7, and salmonella) as significant biological hazards. Furthermore, cooking is the step in the process at which control can be applied to reduce the enteric pathogens to an acceptable level. In this example, the HACCP team concluded that a thermal process equivalent to 155° F for 16 seconds would be necessary to assure the safety of this product. To ensure that this time and temperature are attained, the HACCP team for one facility determined that it would be necessary to establish critical limits for the oven temperature and humidity, belt speed (time in oven), patty thickness and composition (e.g., all beef, beef and other ingredients). Control of these factors enables the facility to produce a wide variety of cooked patties, all of which will be processed to a minimum internal temperature of 155° F for 16 seconds.

Process Step

CCP

Critical Limits

Cooking

YES

Oven temperature:___° F
Time; rate of heating and cooling (belt speed in ft/min): ____ft/min
Patty thickness: ____in.
Patty composition: e.g. all beef
Oven humidity: ____% RH

 

Establish monitoring procedures (Principle 4)

Monitoring is a planned sequence of observations or measurements to assess whether a CCP is under control and to produce an accurate record for future use in verification. Monitoring serves three main purposes. First, monitoring is essential to food safety management in that it facilitates tracking of the operation. If monitoring indicates that there is a trend towards loss of control, then action can be taken to bring the process back into control before a deviation from a critical limit occurs. Second, monitoring is used to determine when there is loss of control and a deviation occurs at a CCP, i.e., exceeding or not meeting a critical limit. When a deviation occurs, an appropriate corrective action must be taken. Third, it provides written documentation for use in verification.

Monitoring equipment must be carefully calibrated for accuracy.

Assignment of the responsibility for monitoring is an important consideration for each CCP. Specific assignments will depend on the number of CCPs and control measures and the complexity of monitoring. Personnel who monitor CCPs are often associated with production (e.g., line supervisors, selected line workers and maintenance personnel) and, as required, quality control personnel. Those individuals must be trained in the monitoring technique for which they are responsible, fully understand the purpose and importance of monitoring, be unbiased in monitoring and reporting, and accurately report the results of monitoring.

All records and documents associated with CCP monitoring should be dated and signed or initialed by the person doing the monitoring. It is necessary to establish a monitoring frequency and procedure that will be reliable enough to indicate that the CCP is under control. 

Most monitoring procedures need to be rapid because they relate to on-line, "real-time" processes and there will not be time for lengthy analytical testing. Examples of monitoring activities include: visual observations and measurement of temperature, time, pH, and moisture level.

Microbiological tests are seldom effective for monitoring due to their time-consuming nature and problems with assuring detection of contaminants. Physical and chemical measurements are often preferred because they are rapid and usually more effective for assuring control of microbiological hazards. For example, the safety of pasteurized milk is based upon measurements of time and temperature of heating rather than testing the heated milk to assure the absence of surviving pathogens.

Establish corrective actions (Principle 5)

An important purpose of corrective actions is to prevent foods which may be hazardous from reaching consumers. Where there is a deviation from established critical limits, corrective actions are necessary. Therefore, corrective actions should include the following elements: (a) determine and correct the cause of non-compliance; (b) determine the disposition of non-compliant product and (c) record the corrective actions that have been taken. Specific corrective actions should be developed in advance for each CCP and included in the HACCP plan.

As a minimum, the HACCP plan should specify what is done when a deviation occurs, who is responsible for implementing the corrective actions, and that a record will be developed and maintained of the actions taken. Individuals who have a thorough understanding of the process, product and HACCP plan should be assigned the responsibility for oversight of corrective actions.

Establish verification procedures (Principle 6)

Verification is defined as those activities, other than monitoring, that determine the validity of the HACCP plan and that the system is operating according to the plan. The (NAS) National Academy of Sciences (1985) pointed out that the major infusion of science in a HACCP system centres on proper identification of the hazards, critical control points, critical limits, and instituting proper verification procedures. These processes should take place during the development and implementation of the HACCP plans and maintenance of the HACCP system.

Another important aspect of verification is the initial validation of the HACCP plan to determine that the plan is scientifically and technically sound, that all hazards have been identified and that if the HACCP plan is properly implemented these hazards will be effectively controlled. Information needed to validate the HACCP plan often include (1) expert advice and scientific studies and (2) in-plant observations, measurements, and evaluations. For example, validation of the cooking process for beef patties should include the scientific justification of the heating times and temperatures needed to obtain an appropriate destruction of pathogenic microorganisms (i.e., enteric pathogens) and studies to confirm that the conditions of cooking will deliver the required time and temperature to each beef patty.

Verification activities are carried out by individuals within a company, third party experts, and regulatory agencies. It is important that individuals doing verification have appropriate technical expertise to perform this function. 

Example of a Company Established HACCP Verification Schedule

Activity

Frequency

Responsibility

Reviewer

Verification Activities Scheduling

Yearly or Upon HACCP System Change

HACCP Coordinator

Plant Manager

Initial Validation of HACCP Plan

Prior to and During Initial Implementation of Plan

Independent Expert(s)(a)

HACCP Team

Subsequent validation of HACCP Plan

When Critical Limits Changed, Significant Changes in Process, Equipment Changed, After System Failure, etc.

Independent Expert(s)(a)

HACCP Team

Verification of CCP Monitoring as Described in the Plan (e.g., monitoring of patty cooking temperature)

According to HACCP Plan (e.g., once per shift)

According to HACCP Plan (e.g., Line Supervisor)

According to HACCP Plan (e.g., Quality Control)

Review of Monitoring, Corrective Action Records to Show Compliance with the Plan

Monthly

Quality Assurance

HACCP Team

Comprehensive HACCP System Verification

Yearly

Independent Expert(s)(a)

Plant Manager

(a) Done by others than the team writing and implementing the plan. May require additional technical expertise as well as laboratory and plant test studies.

 

Examples of Verification Activities

  1. Verification procedures may include:
    1. Establishment of appropriate verification schedules.
    2. Review of the HACCP plan for completeness.
    3. Confirmation of the accuracy of the flow diagram.
    4. Review of the HACCP system to determine if the facility is operating according to the HACCP plan.
    5. Review of CCP monitoring records.
    6. Review of records for deviations and corrective actions.
    7. Validation of critical limits to confirm that they are adequate to control significant hazards.
    8. Validation of HACCP plan, including on-site review.
    9. Review of modifications of the HACCP plan.
    10. Sampling and testing to verify CCPs.
  2. Verification should be conducted:
    1. Routinely, or on an unannounced basis, to assure CCPs are under control.
    2. When there are emerging concerns about the safety of the product.
    3. When foods have been implicated as a vehicle of foodborne disease.
    4. To confirm that changes have been implemented correctly after a HACCP plan has been modified.
    5. To assess whether a HACCP plan should be modified due to a change in the process, equipment, ingredients, etc.
  3. Verification reports may include information on the presence and adequacy of.
    1. The HACCP plan and the person(s) responsible for administering and updating the HACCP plan.
    2. The records associated with CCP monitoring.
    3. Direct recording of monitoring data of the CCP while in operation.
    4. Certification that monitoring equipment is properly calibrated and in working order.
    5. Corrective actions for deviations.
    6. Sampling and testing methods used to verify that CCPs are under control.
    7. Modifications to the HACCP plan.
    8. Training and knowledge of individuals responsible for monitoring CCPs.
    9. Validation activities.

 Establish record-keeping and documentation procedures (Principle 7)

Generally, the records maintained for the HACCP System should include the following:

  1. A summary of the hazard analysis, including the rationale for determining hazards and control measures.
  2. The HACCP Plan

Listing of the HACCP team and assigned responsibilities.

Description of the food, its distribution, intended use, and consumer.

Verified flow diagram.

HACCP Plan Summary Table that includes information for:

Steps in the process that are CCPs

The hazard(s) of concern.

Critical limits

Monitoring*

Corrective actions*

Verification procedures and schedule*

Record-keeping procedures*

* A brief summary of position responsible for performing the activity and the procedures and frequency should be provided

The following is an example of a HACCP plan summary table:

CCP

Hazards

Critical limit(s)

Monitoring

Corrective Actions

Verification

Records

 

 

 

 

 

 

 

  1. Support documentation such as validation records.
  2. Records that are generated during the operation of the plan.

Examples of HACCP Records

  1. Ingredients for which critical limits have been established.
    1. Supplier certification records documenting compliance of an ingredient with a critical limit.
    2. Processor audit records verifying supplier compliance.
    3. Storage records (e.g., time, temperature) for when ingredient storage is a CCP.
  2. Processing, storage and distribution records
    1. Information that establishes the efficacy of a CCP to maintain product safety.
    2. Data establishing the safe shelf life of the product; if age of product can affect safety.
    3. Records indicating compliance with critical limits when packaging materials, labelling or sealing specifications are necessary for food safety.
    4. Monitoring records.
    5. Verification records.
  3. Deviation and corrective action records.
  4. Employee training records that are pertinent to CCPs and the HACCP plan.
  5. Documentation of the adequacy of the HACCP plan from a knowledgeable HACCP expert.

 

IMPLEMENTATION AND MAINTENANCE OF THE HACCP PLAN

The successful implementation of a HACCP plan is facilitated by commitment from top management. The next step is to establish a plan that describes the individuals responsible for developing, implementing and maintaining the HACCP system. Initially, the HACCP coordinator and team are selected and trained as necessary. The team is then responsible for developing the initial plan and coordinating its implementation.

Often it is a good idea to develop a timeline for the activities involved in the initial implementation of the HACCP plan. Implementation of the HACCP system involves the continual application of the monitoring, record-keeping, corrective action procedures and other activities as described in the HACCP plan.

Maintaining an effective HACCP system depends largely on regularly scheduled verification activities. The HACCP plan should be updated and revised as needed. An important aspect of maintaining the HACCP system is to assure that all individuals involved are properly trained so they understand their role and can effectively fulfil their responsibilities.

 

 Refer

USFDA

 

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