G. Encase the interceptor in well-packed " rock, or sand . F. Concrete or finishing material requirements are to be determined by the specifying engineer. %PDF-1.5 % This includes: restaurants, fast-food operations, cafeterias, hospitals, bars, grocery stores, bakeries, coffee shops, butcher shops and other similar operations that handle food. Exception: Both HGIs and GRDs are sized based on the flow rate of the waste stream in gpm. Fats, oils and grease in the sewer system costs the region over $2.7 million each year. Chapter 10: Traps and Interceptors, 2021 Oregon Plumbing - UpCodes Here are a few examples. PDF Guidelines for Precast Concrete Grease Interceptors A Hydromechanical Grease Interceptor (HGI) does not require to be directly vented unless specifically mandated by local code or by law. An "auto fry" is defined as an enclosed, ventless, self-contained individual-serving deep fryer. As the waste stream flows through the orifice in the flow control device negative pressure is created, drawing in air from the air intake which is intended to mix with the waste water as it enters the grease interceptor aiding in separation efficiency. 0 Building Drainage | Grease, Oil and Solid Interceptors - Zurn 1003.3.4 Hydromechanical grease interceptors, fats, oils and greases disposal systems and automatic grease removal devices. Los Angeles County grease interceptor detail. the publication as well as the name and address of the promulgating agency are However, since PDI created this procedure, the health departments of the country have mandated indirect waste connections on prep sinks and the like, so drain down time cannot be controlled. PDF Guidance Document for Grease Trap Interceptor and Separator The above diagram would not be compliant with the UPC. If you use this chart, I would use the one-minute column, or your interceptor might be undersized. Again, there is nothing wrong with this installation, though it may not be immediately obvious as to why. Trapping and Venting for Grease Interceptors - IWConsultingService However, these requirements also allow larger HGI models if site conditions are not ideal for a Gravity Grease Interceptor. %PDF-1.6 % PDF BILL NO. 2020- ORDINANCE NO. - Las Vegas . Units supplied with external flow restrictors are vented on the inlet . (a) in no case be less than 1 in. hbbd```b``vA$S+^$Al$k9HD+D "_&) rB8H02UzeQ , ` `q'"& O@5 M_*! T! endstream endobj startxref 0 %%EOF 177 0 obj <>stream 7.5.5.2. venting ="http://thehandyforce.com/interior/bathroom-renovations/" title ="Toronto Bathroom renovation inspiration">venting of Interceptors. PDI G101 mandates the installation of a vented external flow control. hbbd``b`$f wqu@V&FD:Ft? [ GRDs are trickier to size than HGIs. dwellings. That being the case the interceptor does not require a vented external flow control - jurisdictions unfamiliar with this type of interceptor often question drawings like this and understandably so. Austin Waters Office of Industrial Waste (IW) modified its grease interceptor policies in April 2021. Extremely large volume GIs may have three compartments; While operating at the GI's rated flow capacity, the first compartment must provide a retention time of no less than seven minutes, and the second compartment must provide a retention time of no less than five minutes (~60/40 split); GI inverts and vents shall be external to the compartments. The following diagrams show some of the various approaches to common venting. This drawing for a PDI G101/ASME Type A grease interceptor appears to be compliant with the IPC. (5) Every vent pipe that serves an oil or grease interceptor and is located outside a building shall be not less than 3 in. endstream endobj startxref e.) Venting is recommended on both the inlet and outlet side of the interceptor, or as governed by local code. Like HGIs, they can be recessed in the floor, located on the floor below, or sit on the floor next to a single fixture. 2. minimum size of grease trap is 35 mgd and 70 lbs. (6) Every grease interceptor shall have a vent pipe that is not less than 1 in. This is best done with an empty grease interceptor. For example, you need at least 40 lb for 20 gpm. Traps, interceptors and separators - LII / Legal Information Institute Many states that adopt or adapt the UPC have added an allowance for AAVs so you will have to check with your state to see if they are approved. The vent on the flow control is an air intake. Grease Interceptor. plumbing from approved fixtures as required in district standards . of the Revised Code. Copyright | Privacy Statement. This bylaw applies to commercial kitchens and operations that prepare, package, serve, sell or otherwise handle food in a way that produces fats, oils and grease. Assuming the interceptor is intended to serve as a fixture trap, there is no requirement to install an additional trap and vent between the fixture and the interceptor. Manufacturer's are required to identify which Type their interceptor is rated to when certifying to the ASME standard. listed in rule 4101:3-15-01 of the Administrative Code. 2021 International Plumbing Code (Ipc) | Icc Digital Codes
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