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// CODE SNIPPET

1003.3 Grease Interceptors

Plumbing Code 2018 of Kansas > 10 Traps, Interceptors and Separators > 1003 Interceptors and Separators > 1003.3 Grease Interceptors
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Grease interceptors shall comply with the requirements of Sections 1003.3.1 through 1003.3.8.

1003.3.1 Grease Interceptors and Automatic Grease Removal Devices Required

A grease interceptor or automatic grease removal device shall be required to receive the drainage from fixtures and equipment with grease-laden waste located in food preparation areas, such as in restaurants, hotel kitchens, hospitals, school kitchens, bars, factory cafeterias and clubs. Fixtures and equipment shall include pot sinks, prerinse sinks; soup kettles or similar devices; wok stations; floor drains or sinks into which kettles are drained; automatic hood wash units and dishwashers without prerinse sinks. Grease interceptors and automatic grease removal devices shall receive waste only from fixtures and equipment that allow fats, oils or grease to be discharged. Where lack of space or other constraints prevent the installation or replacement of a grease interceptor, one or more grease interceptors shall be permitted to be installed on or above the floor and upstream of an existing grease interceptor.

1003.3.2 Food Waste Disposers Restriction

A food waste disposer shall not discharge to a grease interceptor.

1003.3.3 Additives to Grease Interceptors

Dispensing systems that dispense interceptor performance additives to grease interceptors shall not be installed except where such systems dispense microbes for the enhancement of aerobic bioremediation of grease and other organic material, or for inhibiting growth of pathogenic organisms by anaerobic methods. Such microbial dispensing systems shall be installed only where the grease interceptor manufacturer's instructions allow such systems and the systems conform to ASME A112.14.6. Systems that discharge emulsifiers, chemicals or enzymes to grease interceptors shall be prohibited.

1003.3.4 Grease Interceptors and Automatic Grease Removal Devices Not Required

A grease interceptor or an automatic grease removal device shall not be required for individual dwelling units or any private living quarters.

1003.3.5 Hydromechanical Grease Interceptors, Fats, Oils and Greases Disposal Systems and Automatic Grease Removal Devices

Hydromechanical grease interceptors; fats, oils, and greases disposal systems and automatic grease removal devices shall be sized in accordance with ASME A112.14.3, ASME A112.14.4, ASME A112.14.6, CSA B481.3 or PDI G101. Hydromechanical grease interceptors; fats, oils, and greases disposal systems and automatic grease removal devices shall be designed and tested in accordance with ASME A112.14.3, ASME A112.14.4, CSA B481.1, PDI G101 or PDI G102. Hydromechanical grease interceptors; fats, oils, and greases disposal systems and automatic grease removal devices shall be installed in accordance with the manufacturer's instructions. Where manufacturer's instructions are not provided, hydromechanical grease interceptors; fats, oils, and greases disposal systems and automatic grease removal devices shall be installed in compliance with ASME A112.14.3, ASME A112.14.4, ASME A112.14.6, CSA B481.3 or PDI G101.

1003.3.5.1 Grease Interceptor Capacity

Grease interceptors shall have the grease retention capacity indicated in Table 1003.3.5.1 for the flow-through rates indicated.
TABLE 1003.3.5.1
CAPACITY OF GREASE INTERCEPTORSa
TOTAL FLOW-THROUGH
RATING (gpm)
GREASE RETENTION
CAPACITY (pounds)
48
612
714
918
1020
1224
1428
1530
1836
2040
2550
3570
50100
75150
100200
For SI: 1 gallon per minute = 3.785 L/m, 1 pound = 0.454 kg.
  1. For total flow-through ratings greater than 100 (gpm), double the flow-through rating to determine the grease retention capacity (pounds).

1003.3.5.2 Rate of Flow Controls

Grease interceptors shall be equipped with devices to control the rate of water flow so that the water flow does not exceed the rated flow. The flow-control device shall be vented and terminate not less than 6 inches (152 mm) above the flood rim level or be installed in accordance with the manufacturer's instructions.

1003.3.6 Automatic Grease Removal Devices

Where automatic grease removal devices are installed, such devices shall be located downstream of each fixture or multiple fixtures in accordance with the manufacturer's instructions. The automatic grease removal device shall be sized to pretreat the measured or calculated flows for all connected fixtures or equipment. Ready access shall be provided for inspection and maintenance.

1003.3.7 Gravity Grease Interceptors and Gravity Grease Interceptors With Fats, Oils, and Greases Disposal Systems

The required capacity of gravity grease interceptors and gravity grease interceptors with fats, oils, and greases disposal systems shall be determined by multiplying the peak drain flow into the interceptor in gallons per minute by a retention time of 30 minutes. Gravity grease interceptors shall be designed and tested in accordance with IAPMO/ANSI Z1001. Gravity grease interceptors with fats, oils, and greases disposal systems shall be designed and tested in accordance with ASME A112.14.6 and IAPMO/ANSI Z1001. Gravity grease interceptors and gravity grease interceptors with fats, oils, and greases disposal systems shall be installed in accordance with manufacturer's instructions. Where manufacturer's instructions are not provided, gravity grease interceptors and gravity grease interceptors with fats, oils, and greases disposal systems shall be installed in compliance with ASME A112.14.6 and IAPMO/ANSI Z1001.

1003.3.8 Direct Connection

The discharge piping from a grease interceptor shall be directly connected to the sanitary drainage system.

Related Code Sections


1003.3 Traps, Interceptors and Separators, Grease Interceptors
Grease interceptors shall comply with the requirements of Sections 1003.3.1 through 1003.3.8 ...
Plumbing Code 2018 of Kansas > 10 Traps, Interceptors and Separators > 1003 Interceptors and Separators > 1003.3 Grease Interceptors
1003.3.5 Traps, Interceptors and Separators, Hydromechanical Grease Interceptors, Fats, Oils and Greases Disposal Systems and Automatic Grease Removal Devices
Hydromechanical grease interceptors; fats, oils, and greases disposal systems and automatic grease removal devices shall be sized in accordance ...
Plumbing Code 2018 of Kansas > 10 Traps, Interceptors and Separators > 1003 Interceptors and Separators > 1003.3 Grease Interceptors > 1003.3.5 Hydromechanical Grease Interceptors, Fats, Oils and Greases Disposal Systems and Automatic Grease Removal Devices
1003.3.6 Traps, Interceptors and Separators, Automatic Grease Removal Devices
Where automatic grease removal devices are installed, such devices shall be located downstream of each fixture or multiple fixtures in accordance ...
Plumbing Code 2018 of Kansas > 10 Traps, Interceptors and Separators > 1003 Interceptors and Separators > 1003.3 Grease Interceptors > 1003.3.6 Automatic Grease Removal Devices
1003.3.2 Traps, Interceptors and Separators, Food Waste Disposers Restriction
A food waste disposer shall not discharge to a grease interceptor ...
Plumbing Code 2018 of Kansas > 10 Traps, Interceptors and Separators > 1003 Interceptors and Separators > 1003.3 Grease Interceptors > 1003.3.2 Food Waste Disposers Restriction
1003.3.8 Traps, Interceptors and Separators, Direct Connection
The discharge piping from a grease interceptor shall be directly connected to the sanitary drainage system ...
Plumbing Code 2018 of Kansas > 10 Traps, Interceptors and Separators > 1003 Interceptors and Separators > 1003.3 Grease Interceptors > 1003.3.8 Direct Connection
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