It looks like your browser does not have JavaScript enabled. (7) A vent pipe shall be provided within 1 500 mm of the inlet to a grease interceptorcomplete with a cleanout to provide cleaning of thevent pipe. Vent the grease interceptor on the inlet side. 101 0 obj <> endobj 139 0 obj <>/Filter/FlateDecode/ID[<8100D9A72E24714CB39E4D32A0282084><7624C21409664899A744A21F2F606FC0>]/Index[101 77]/Info 100 0 R/Length 170/Prev 846138/Root 102 0 R/Size 178/Type/XRef/W[1 3 1]>>stream . If your grease interceptor is undersized, you may be required to clean it out more often until you install a properly sized unit. PDF WSSC Water Volume-Based Grease Interceptors Some of these large interceptors (basically the plastic ones) come with vent connections on the tank itself. HyTSwoc [5laQIBHADED2mtFOE.c}088GNg9w '0 Jb Grease Interceptor are manufactured with patented distributed flow pattern and corrosion resistant fiberglass material capturing FOG before it clogs pipes, enters the sewer waste system, or spoils a successful operation. We use cookies to provide you with a better experience. PDF Grease Interceptor Sizing and Installation Guidelines - Tacoma Permits (3) Where a secondary receiver for oil is installed in conjunction with an oil interceptor, it shall be vented in accordance with the manufacturer's recommendations, and the vent pipe shall. Is it half the size of the connected waste piping? Book -Volume 4, Chapter 8, Grease Interceptors or CSA B481 Series-12 may also be considered. Note: CSA 481.3 -12 requires dishwashers to be discharged into a dedicated grease trap. Grease Interceptor Requirements - Metro Vancouver Regional District Either adding a vent to the trap or removing the trap on the fixture altogether would solve the problem. PDI G101 and ASME A112.14.3 Type A certified interceptors are required to have a vented external flow control installed upstream of the interceptor. p* 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. Examples of such features would include a flow diverter plate in the primary compartment, "tee" piping between the two GI compartments and "tee" piping on the tank outlet; Be constructed of concrete or non-corrodible materials; Each GI compartment shall be accessible for cleaning and inspection purposes (no exceptions). Grease interceptor means a multi - compartment . Promote longer time between cleaning to . This drawing shows a semi-automatic draw-off type grease interceptor but without a vented external flow control. The drawing shows a PDI G101/ASME Type A grease interceptor connected to a the three compartment sink that is trapped and vented, an external flow control with air intake and a vent on the downstream side of the grease interceptor. in size, or can be sized in accordance with the manufacturers recommendations. The Uniform Plumbing Code (UPC) does not permit a grease interceptor to serve as a fixture trap and also prohibits the installation of a vent between the air intake on the flow control and the grease interceptor. a) All required grease interceptors shall comply with the following: 1) Material and Covers. This installation would be compliant with both the IPC and the UPC. endstream endobj 679 0 obj <>stream and Note that HGIs are generally located recessed into the floor or on the floor below if that is possible. A kitchen in a B&B with more than nine rooms will need installation of a grease interceptor. Fats, oils and grease in the sewer system costs the region over $2.7 million each year. standard, or any other technical publication, the specific date and title of Like HGIs, they can be recessed in the floor, located on the floor below, or sit on the floor next to a single fixture. They can clog sewers and cause back-ups into homes and businesses, and overflows into the environment. The purpose of a grease interceptor is to catch and collect fats, oils, grease, and solids (FOGS) from commercial and restaurant kitchens. A plumbing line upstream of grease interceptor. grease trap shall not be made of steel or stainless steel. YLE&_| _fZ K*8Xbxl`ab8`NA!948y"vt n/9((+ K p& endstream endobj 102 0 obj <>/Metadata 3 0 R/Pages 99 0 R/StructTreeRoot 10 0 R/Type/Catalog/ViewerPreferences<>>> endobj 103 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageC]/Properties<>/XObject<>>>/Rotate 0/StructParents 0/TrimBox[0.0 0.0 612.0 792.0]/Type/Page>> endobj 104 0 obj <>stream Grease interceptors are sized according to the rate of incoming flow, in gallons per minute (GPM). Copyright | Privacy Statement. endstream endobj 678 0 obj <>/ExtGState<>/ProcSet[/PDF/ImageC]/XObject<>>>/TilingType 3/Type/Pattern/XStep 2048.0/YStep 1536.0>>stream If you have questions about the letter you received, call or email your assigned officer. PDF Grease Interception in The Plumbing Code - Apwa The sizing of common venting is specified in Table 911.3. `Iy|w|`D;8F (m7|@"`/(9c8-bu"+oI-:; f4 +kaG}Xro1FJV-.4a'o~f.al-'p~eVW8c=GWJVY6_? (1) Every oil interceptor shall be provided with 2 vent pipe s that, (a) connect to the interceptor at opposite ends, (b) extend independently to open air, (c) terminate not less than 2 000 mm above ground and at elevations differing by at least 300 mm, and (d) do not connect to each other or any other vent pipe. 0 The two traps and their fixture drains can be either at the same level or at different levels, provided that they are on the same floor. 2. minimum size of grease trap is 35 mgd and 70 lbs. This installation is compliant with both the IPC and the UPC since it shows a trapped and vented fixture discharging through an approved interceptor without external vented flow control with a vent installed downstream. It can be done either way with dramatically different results. The above diagram would not be compliant with the UPC. V)gB0iW8#8w8_QQj@&A)/g>'K t;\ $FZUn(4T%)0C&Zi8bxEB;PAom?W= You can ask Metro Vancouver to review your installation plan. Los Angeles County grease interceptor detail. You must: If you have received a Notice of Violation letter after Metro Vancouver has conducted a compliance inspection, here are the next steps to take. Specs and Installation. endstream endobj 1047 0 obj <. Code 4101:3-10-01 - Traps, interceptors and separators. Section 890 - Illinois General Assembly Standards also come into play when it comes to determining the type and location of vents upstream of a grease interceptor. Learn more . "F$H:R!zFQd?r9\A&GrQhE]a4zBgE#H *B=0HIpp0MxJ$D1D, VKYdE"EI2EBGt4MzNr!YK ?%_&#(0J:EAiQ(()WT6U@P+!~mDe!hh/']B/?a0nhF!X8kc&5S6lIa2cKMA!E#dV(kel }}Cq9 What's important to remember about AAVs is that they only allow for the relief of negative pressure in the drainage system. hb```b`0 B,@Q@g4l0>' #4pKU"[L[uM-6 z `:0 'b endstream endobj startxref Our purpose is to serve and provide for our employees by being a resilient company that offers best-in-class products and services. Below is a comparison between our most recent version and the prior quarterly release. Do not use enzymes or other agents that will allow grease to pass through the grease interceptor and into the sewer. YY IpnnN$cG!v,:9g]7.x:Rtxr^-hZe\&_yVnC D0f0bH9 1_`cG\>L(&o(cmK T07( %PDF-1.6 % There are no moving parts, but there is a series of baffles that catch the grease in the waste stream creating a hydromechanical process. Must comply with American Society of Civil Engineers (ASME) A112.14.3 standard; Must be flow-rated at 75-gallons per minute (GPM) or higher; Must be constructed of non-corrodiblematerials; Must be installed per ASME A112.14.3 Type D standard (indirect connection without external flow control); Must have a minimum liquid capacity consistent with the IW approval letter specified minimum; and. @le&exDxX If you are installing a grease interceptor, use our online tool for correct sizing. (a) in no case be less than 1 in. 1002.1 Fixture traps. 978 0 obj <> endobj There are the large gravity grease interceptors, concrete for many years, but made of plastic in more recent years. (6) Every grease interceptor shall have a vent pipe that is not less than 1 in. Shall include a60/40 split between compartments to allow for adequate retention time, similar to a GGI; Shall beconstructed of non-corrodible materials; May have either internal or external inverts. Protection Agency", or the authority in charge of the sewerage system into I dont know about you, but, for me, 2016 was a very difficult year, and I am not sorry to see it go. Hunters Curve doesnt work because it is intended for water flow rates, not drainage. Do you have an interesting or questionable installation you can share? This is fine if the waste hauler has a means of access to the unit with their vacuum hose, but often they are mistakenly buried in the parking garage where no such access exists, and a grease truck is much too tall to drive into a parking garage with 8'-4'' ADA clearance. The location of gravity grease interceptors is critical. Trap seal protection is level to allow for venting. 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. 0 These large central units are often buried outside or hidden in a parking garage. Please see below for the updated requirements. . Some years ago, I was successful in getting a sizing table written in to Chapter 10 of the UPC relating fixture units to grease interceptor size, but the IPC still does not have such a table so it remains a mystery in that code. I would size it as half the size of the inlet with a 2-inchminimum, but your AHJ might want you to use the connected fixture units so it is worth checking with your AHJ. Here are a few examples. For example, you need at least 40 lb for 20 gpm. If you dont know which fixtures are connected to a grease interceptor, call a plumber or other service provider to trace pipes back to the grease interceptor. n3kGz=[==B0FX'+tG,}/Hh8mW2p[AiAN#8$X?AKHI{!7. 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. endstream endobj 677 0 obj <>stream Where to buy. Since all semi-automatic draw-off grease interceptors are certified to either PDI G101 or ASME A112.14.3 Type A (that I am aware of) an external vented flow control must be shown for compliance with the IPC. . This very simple concept allows two traps to be vented by the same vent. The vent on the flow control is an air intake. Older service trucks have weaker vacuums, and theres no telling who will show up. Does the interceptor require a vent? As waste water flows through a kitchens plumbing (3-compartment sinks, prep sinks, mop sinks, dishwashers, floor drains, etc.) A Hydromechanical Grease Interceptor (HGI) does not require to be directly vented unless specifically mandated by local code or by law. PDF BILL NO. 2020- ORDINANCE NO. - Las Vegas %PDF-1.5 % If you use this chart, I would use the one-minute column, or your interceptor might be undersized. Be aware that there is a maximum lift height of the vacuum pump on the service truck, so dont locate the unit more than one story below grade. definition. To separate them from water an interceptor provides a separation chamber which allows FOG to rise to the surface. plants shall be drained in accordance with the rules of the "Ohio Environmental 2y.-;!KZ ^i"L0- @8(r;q7Ly&Qq4j|9 6111.44 Grease interc eptors are installed on "gray" water drain lines and are designed to remove fats, oils and grease (FOG) from wastewater. 0 Okay, so let's take a look at some drawings and see what works and what doesn't. In any event, a grease trap, interceptor or separator shall be fully evacuated, cleaned, and inspected at least once every 180 days. The GI flowline (upstream of inlet invert) must be at least 3 inches above the tanks static water level; The GI vent must be at least 3 inches above the static water level of the tank; The GI inlet must be near an elevation that is one half of the tank's static water level height, and the GI outlet must be at least 12 inches above the tank floor; Adequate flow diffusion features must be provided to evenly distribute flow throughout the GI.