A schedule outlining the frequency and responsibility for carrying out the methods,
procedures or tests additional to those used in monitoring, to determine that the HACCP study
was completed correctly, that the relevant SQF System is compliant with the relevant food
safety and/or food quality plan and that it continues to be effective
Process Steps
Validation activities should be listed, and include, but are not limited to:
Comparing standards against legislative literature, scientific and technical
information, etc.
Challenging specifications for microbiological testing, shelf-life testing, etc.
How often? High-risk sites should validate critical limits annually.
Recorded validation information should include the type of equipment used in activity,
specifications of the activity, methods used to challenge, results, date, and signed by a
qualified individual.
Critical food safety limits are said to be validated when they have been confirmed by scientific
analysis. Prerequisite programs and other food safety controls, however, are confirmed by
observation, inspection or audit to ensure that they are achieving the desired result. It is
required that Critical Control Points (CCPs) and Critical Quality Points (CQPs) be validated at
an agreed upon frequency.
Verification activities should be outlined in a verification schedule, which should include a
description of verification activities, monitored frequency of completion, designated
responsible personnel, and proof of proper implementation and record keeping.
Verification activities include, but are not limited to:
Personnel practices: Observe employees during the internal audit or daily operational
inspection to ensure they are meeting the requirements of the supplier’s program.
Personnel processing practices: Observe employees during the internal audit or daily
operational inspection to ensure they are meeting the requirements of the program.
Training of personnel: Interview employees to ensure that job training has been
effective and that key points are understood.
Calibration of equipment: Engage an outside contractor to confirm that equipment is
properly calibrated.
Management of pests and vermin: Trend pest activity information to determine that
the program is effective.
Premises and equipment maintenance: Trend equipment breakdowns for signs of
repeat problems.
Cleaning and inspection: Perform environmental testing to ensure that
microbiological loads are acceptable.
Water microbiology: Perform water testing to ensure that it meets potability
standards.
It is important that personnel conducting validation and verification activities have
appropriate training and qualifications to properly verify and validate the activity. Training and
certifications must be documented, dated, and signed for records. The use of a registered
SQF consultant can help a site attain advice on validation and verification activities when
implementing the SQF System.
Katherine M. J. Swanson and Jean E. Anderson (2000) Industry Perspectives on the Use
of Microbial Data for Hazard Analysis and Critical Control Point Validation and Verification.
Journal of Food Protection: June 2000, Vol. 63, No. 6, pp. 815-818.
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