What's the difference between prps, oprp and ccp?

prps stands for pre requisite programs

oprps are operational pre requisite programs

ccps are critical control points

PRP : These are basically the generic controls in any type of food buisness operation. Mark the word GENERIC . These are to be applied in all types of food buisness so as to maintain a hygienic environment to reduce the risk to the Food Safety . Eg - Plant Layout or infrasturcture control , pest control, personnnel hygiene, sanitation , work environment, food handling and storage , transporatation.PRP are foundation of HACCP . 

 oPRP : These differ from PRP in the sense that these are SPECIFIC to particular industry /food operations . And these are arrived only after doing the hazard analysis. So, oPRP wil differ within the food industry while PRP could be more or less similiar. Therefore, after you conduct hazard analysis for a specific food chain and there comes a requirement/step where control is required to prevent /reduce the hazard it becomes oPRP .

 CCP : CCP also arrive as a result of Hazard Aanlysis but difference b/w oPRP & CCP is the risk level of the identified hazard. If the hazard pose very high risk to food safety then it is CCP rather than oPRP(substantial risk) . Also, while doing hazard analysis some steps are required to control the hazard but since the hazard is reduced /eliminated in further step , it is not considered a CCP , so in such case it's an oPRP