Section 1003 Interceptors and Separators
1003.3.5 Hydromechanical Grease Interceptors, Fats, Oils and Greases Disposal Systems and Automatic Grease Removal Devices
CAPACITY OF GREASE INTERCEPTORSa
|TOTAL FLOW-THROUGH |
|GREASE RETENTION |
For SI: 1 gallon per minute = 3.785 L/m, 1 pound = 0.454 kg.
- For total flow-through ratings greater than 100 (gpm), double the flow-through rating to determine the grease retention capacity (pounds).
1003.3.7 Gravity Grease Interceptors and Gravity Grease Interceptors With Fats, Oils, and Greases Disposal Systems
At repair garages where floor or trench drains are provided, car washing facilities, factories where oily and flammable liquid wastes are produced and hydraulic elevator pits, oil separators shall be installed into which oil-bearing, grease-bearing or flammable wastes shall be discharged before emptying into the building drainage system or other point of disposal.
Exception: An oil separator is not required in hydraulic elevator pits where an approved alarm system is installed. Such alarm systems shall not terminate the operation of pumps utilized to maintain emergency operation of the elevator by fire fighters.
Clothes washers shall discharge through an interceptor that is provided with a wire basket or similar device, removable for cleaning, that prevents passage into the drainage system of solids 1/2 inch (12.7 mm) or larger in size, string, rags, buttons or other materials detrimental to the public sewage system.