The 2000 Building Regulations Part H, (amended 2002), advises that the requirement for an adequate drainage system is to minimise the risk of blockage or leakage.
Commercial kitchens and hot food premises should be fitted with a grease trap and should comply with BS EN 1825-1. Commercial grease trap systems should also be designed in accordance with BS EN 1825-2, demonstrating effective means of grease removal. BS EN 1825 is the European standard for commercial gravity grease traps and separators. Other effective means include mechanical grease removal equipment and biological or bacterial dosing systems which break down grease. and designed in accordance with BS EN1825-2 or other effective means of grease removal. BS 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.