An international consensus now exists for the principles of HACCP and
how they should be implemented. The relative roles of industry and reg
ulatory agencies has been described. A generic flow diagram is outline
d and briefly discussed. A questionnaire for use in HA CCP verificatio
n is provided. A rationale is suggested for determining when HACCP sho
uld be mandatory. The transition from theory to practice and regulator
y involvement raises a variety of issues, some of which are discussed.