Size Matters…
Because Fats, Oils and Greases (FOGs) are such an issue there are many laws preventing their release to sewers.
In terms of the requirement for grease interception, approved Document H to the Building Regulations 2000, as amended April 2002, says that the requirement for an adequate drainage system should minimize the risk of blockage or leakage of FOGs. It goes on to state that one way of meeting this level of performance is for:
“Drainage serving kitchens in commercial hot food premises should be fitted with a grease separator complying with BS EN1825-1 and designed in accordance with BS EN1825-2 or other effective means of grease removal.”
EN1825 is the European standard for commercial gravity grease separators. “Other effective means” include mechanical grease removal equipment and biological or bacterial dosing systems which break down grease.
So, if you have a grease trap EN 1825 stipulates its minimum size. If it’s less than that it’s advisable to augment it with a biological management system which will almost always be cheaper than installing a larger grease trap. It also reduces emptying cost and odours.
If you don’t have a greasetrap you need to fit a ‘system’ – either a grease trap or a biological system.
