EHEDG, 3-A or R638: Which Hygienic Design Standard Applies to Your Plant?
One is European industry guidance, one is a set of American sanitary standards, and one is South African law. What each is, how they stack, and which one to cite.
EHEDG
EHEDG Guideline 8: What It Actually Says, and the Numbers People Wrongly Credit to It
Guideline 8 is the document behind most hygienic design numbers in use, and it is also the one most often miscited. Here is what it covers, what it does not, and how to quote it so your specification holds.
Belt Conveyor Hygienic Design: The Six Points That Decide Whether It Can Be Cleaned
Belt edge, bed, return rollers, drive, transfer and frame. Score a conveyor at those six points, with a photograph on every zero, and you have a capital case rather than a complaint.
How to Write an Equipment Purchase Specification That Holds Up at Audit
The cheapest hygienic design control is a specification written before the steel is cut. Here is what to put in it, the evidence gates that go with it, and what South African law already requires of your equipment.
304, 316 or Duplex? How to Choose the Right Stainless Steel for Food Equipment
Three numbers off your own plant choose the grade: chloride, surface temperature and pH. Here is the commonly cited envelope for 304 and 316, where duplex earns its place, the four corrosion mechanisms you will actually meet, and the three documents to ask for at order.
Dead Legs in Food Processing Pipework: How to Find Them, Measure Them and Get Rid of Them
A dead leg is a branch the cleaning solution sweeps past instead of through. Here is how to find every one on your line with a tape measure, how to work out L over D, which guidance sets which limit, and what the fix actually costs.
What Is Hygienic Design in Food Manufacturing? The Ten Rules, and How to Spot a Bad Machine on Your Own Line
Hygienic design is why a machine that is cleaned perfectly can still fail a swab. The ten rules from EHEDG Guideline 8 with the actual numbers, what R638 regulation 6 already requires of your equipment, which scheme clause your auditor will open, and six design faults you can find on your own line this week.
