SECTION P-1003 INTERCEPTORS AND SEPARATORS 405

P-1003.1 Where required. Interceptors and separators shall be provided to prevent the discharge of oil, grease, sand and other substances harmful or hazardous to the public sewer, the private sewage system or the sewage treatment plant or processes. Interceptors and separators shall be connected to the sanitary sewer.

P-1003.2 Approval. The size, type and location of each interceptor and of each separator shall be designed and installed in accordance with the manufacturer’s instructions and the requirements of this section based on the anticipated conditions of use. Wastes that do not require treatment or separation shall not be discharged into any interceptor or separator. As an appurtenance contained within the plumbing system, the interceptor or separator shall not be limited by the material construction of the unit.

P-1003.3 Grease interceptors. Grease interceptors shall comply with the requirements of Sections 1003.3.1 through 1003.3.8.

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P-1003.3.5 Hydromechanical grease interceptors, fats, oils and greases disposal systems and automatic grease removal devices. Hydromechanical grease interceptors shall be of semi-automatic design equipped with a full port type ball valve on the discharge side of the interceptor and a draw-off located in the grease accumulating chamber of the interceptor. 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.

P-1003.3.5.1 Grease interceptor capacity. Grease interceptors shall have the grease retention capacity indicated in Table P-1003.3.5.1 for the flow-through rates indicated with a minimum capacity of 20 gallons per minute of flow and 40 pounds of grease retention capacity.

TABLE P-1003.3.5.1  406
CAPACITY OF GREASE INTERCEPTORS

TOTAL FLOW-THROUGH RATING (gpm)	GREASE RETENTION CAPACITY (pounds)
4	8
6	12
7	14
9	18
10	20
12	24
14	28
20	40
25	50
35	70
50	100
75	150
100	200

 

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P-1003.4 Oil separators required. 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. Interceptors and separators shall be connected to the sanitary sewer.

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P-1003.4.2 Oil separator design. Oil separators shall be listed and labeled, or designed in accordance with Sections 1003.4.2.1, and 1003.4.2.2 and P-1003.4.2.3.

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P-1003.4.2.3 Tightness. Oil interceptors shall be constructed so as to be oil-tight and shall have easily removable water-tight and gas-tight covers.

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P-1003.11 Hair interceptor. An approved hair interceptor shall be installed wherever hair is introduced into the drainage system in sufficient quantity to cause line stoppage and shall be installed in connection with the following uses or occupancies.

1.   Beauty parlors, barbers, beauty operator training schools and similar establishments.

2.   Pet grooming or kennel areas and similar establishments provided with floor drains or trench drains.

3.   Hide or fur processing and similar establishments.

P-1003.12 Plaster interceptor. A plaster interceptor is required on all types of sinks or plumbing fixtures where plaster, earthen or sedimentary materials are to be used.

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Notes

405	Amended, Bill No. 230653 (approved December 20, 2023), effective April 1, 2024.
406	Enrolled bill read “Table 1003.3.5.1”; prefix “P-” added at the discretion of the Code editor.