A grease interceptor (or grease trap) is a device that separates fats, oils and grease from wastewater and stops it from entering the sewer system. This checklist is provided as a reference tool and it is not intended to be exhaustive of all possible plumbing requirements. 2) Minimum Size. Either adding a vent to the trap or removing the trap on the fixture altogether would solve the problem. hb```b`0 B,@Q@g4l0>' #4pKU"[L[uM-6 z `:0 'b I would argue the former since, as noted above, each connected fixture is already trapped and the vent just serves to allow for the displacement of air it is not protecting a 1'' trap seal. hUmo0+~"UKHKnG@6%-m}o~8]c"!B!\d\?C\,8wf2:4sg% yNpi-v[Jl6@:SyQ gnZMlVlo'sH#B*i First, I would like to start by saying Happy Holidays and New Year to all. (d) do not connect to each other or any other vent pipe. Promote longer time between cleaning to . State regulations are updated quarterly; we currently have two versions available. Fats, oils and grease in the sewer system costs the region over $2.7 million each year. The purpose of a grease interceptor is to catch and collect fats, oils, grease, and solids (FOGS) from commercial and restaurant kitchens. 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. grease interceptor, correctly designed to separate light densitysubstances from wastewater, will not by itself govern or regulate theflow of water through the interceptor at all times to sufficiently assurethe "flotation" separation of the substances which are to be interceptedat maximum efficiency. (8) Where an acid waste dilution tank is installed, it shall be provided with a vent pipe connected at the top of the tank and that is sized in accordance with Article 7.5.7.7. If you use this piece of equipment, I would get the vendor involved in the sizing. 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. It looks like your browser does not have JavaScript enabled. A grease interceptor is not required where only one auto . 0 If a grease interceptor needs to be installed, replaced or fixtures need to be connected, call a plumber or other service provider. (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. hbbd``b``Lq ( $?a`bd2)f`$@o n Learn more . 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. View contact information for grease trap manufacturers (Adobe PDF) that are familiar with these criteria. Do you have an interesting or questionable installation you can share? shall be required by the Building Official where they are necessary for the proper handling of liquid wastes containing grease, flammable wastes, sand, solids, acid or alkaline substances, or other ingredients harmful to the building drainage system, the public or hbbd```b``5 )D/r`v&/A' ([bH0l-g3R ,> $^,$$ ?o 4} GREASE INTERCEPTORS - Zurn Trapping and Venting for Grease Interceptors - IWConsultingService Austin Waters Office of Industrial Waste (IW) modified its grease interceptor policies in April 2021. h[YoG+hc` @ek= K;ZoR[&&yTVvUeA3+C+iJ 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. Once the grease interceptor reaches maximum capacity, a certified grease trap cleaning company will need to be called in order to service the grease interceptor. in size in areas where it may be subject to frost closure. 1093 0 obj <>stream Here are a few examples. (6) Every grease interceptor shall have a vent pipe that is not less than 1 in. Chapter 10 Traps and Interceptors - UpCodes 1071 0 obj <>/Filter/FlateDecode/ID[<27EA446AC697844CAE5240B4F0D8AD98>]/Index[1046 48]/Info 1045 0 R/Length 122/Prev 312685/Root 1047 0 R/Size 1094/Type/XRef/W[1 3 1]>>stream Okay, so let's take a look at some drawings and see what works and what doesn't. By continuing to use our website, you acknowledge the use of cookies. Conceptual drawing of a City of Austin approvedgravity grease interceptordesign. KZI^))5+e6R2c*CiXY(Km2*n-jtC9K\D5e-44p`RP./FPG8_@PW4DRi*M-\(~=mLZS[o__O~zm'//\=xG?{RTO//n+([>fU{|y~y~d?|C_\o?.w([? hb```@9 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. PDF Grease Interceptor Sizing and Installation Guidelines - Tacoma Permits The grease interceptor (GI) must be constructed in accordance with the current plumbing codes adopted by the City of Austin, as amended, and installed in a manner acceptable to the Development Services Division (no exceptions); The GI shall have two compartments. N')].uJr 1046 0 obj <> endobj Some of these large interceptors (basically the plastic ones) come with vent connections on the tank itself. To be honest, much of the confusion over whether a drawing shows a code compliant installation of a grease interceptor or not, can be the result of boilerplate drawings provided by manufacturers in submittals or installation instructions. hb```Lf yAXarPw`vB/+2[aa&]eL3DT -ke&{:2CFGC`h B j` SD This includes: restaurants, fast-food operations, cafeterias, hospitals, bars, grocery stores, bakeries, coffee shops, butcher shops and other similar operations that handle food. GRDs are trickier to size than HGIs. . HGIs are generally made from lined steel and are much smaller than gravity grease interceptors. Grease Interceptor Design Requirements | Johnson County Kansas SPS 382.34(5)(c) (c) Exterior grease interceptors. Product Details - Endura Grease Interceptors Grease Interceptor Requirements - Metro Vancouver Regional District 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). The International Plumbing Code (IPC) 1002.1 (exception 3) allows a grease interceptor to serve as a fixture trap - where it is intended by the manufacturer to serve as a trap - for a single fixture or a combination sink of not more than three compartments so long as the vertical distance from the outlet of the fixture to the inlet of the interceptor is not more than 30 inches and the developed length of the waste pipe from the most upstream fixture outlet to the inlet of the interceptor does not exceed 60 inches. Have someone on site who can open the grease interceptor for inspection. It depends on which model plumbing code applies to the installation. endstream endobj 979 0 obj <. nQt}MA0alSx k&^>0|>_',G! which the wastes are to be discharged. Grease Waste Plumbing Required Connections The following fixtures SHALL connect to the grease interceptor: Dishmachines: Low temperature chemical (e.g., chlorine) sanitizing ASME A112.14.3, CSA B481.1 and meeting the requirements of both IPC and UPC . Manufacturer's want to provide guidance for a broad range of installations without providing detailed drawings for every single installation variable that can exist. F. Concrete or finishing material requirements are to be determined by the specifying engineer. Failure to service a grease interceptor on a routine and timely basis can result in complete back-up of the kitchens plumbing system. The unit shown is certified to ASME A112.14.3 Type C (without external flow control) with a built-in or integral flow control and does not require an air intake. Protection Agency", or the authority in charge of the sewerage system into 4. refer to local plumbing code for venting, fixtures, and trap requirements. Wisconsin Legislature: SPS 382.34(5)(c)2.b. 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. If you are installing a grease interceptor, use our online tool for correct sizing. Enzymes, solvents, and emulsifiers are not permitted as they will only change the form of grease, allowing it to be carried out of the grease trap with the wastewater and deposited in the collection system. a) All required grease interceptors shall comply with the following: 1) Material and Covers. Plus, since our new president was just elected, nobody knows what we have in store for 2017 lets hope it is good! If you are designing in the UPC, there is a table in the Code for sizing the interceptors based on pipe size and associated peak flow rate, and then assigns interceptor sizes based on one-minute and two-minute drain down times. GREASE INTERCEPTOR (TYPICAL: 750 GALLON MINIMUM) - Vallejo Wastewater You would think after being around so long that the plumbing associated with these units would be long established and well defined, but it is not. (See Article 2.5.5.2 for venting requirements for oil interceptors.) insize, (b) extend independently to open air, and. For grease trap or grease interceptor routine or emergency maintenance, please give us a call! (See sections indicated dishwasher- significant are often of grease water flow and chops the foodSince a food waste grinder into solidified particles, with a cold associated with hot or warm grease laden waste congealing problems is GenerallyManufacturer's good idea to run food recommend a hydromechanicalinterceptor installation, interceptors 1002.1 Fixture traps. Vy@ ggJ 1G0 V`JLX_HiNg` Tj Schierlocated in Shawnee, Kansasis a privately-owned, 100% USA-made manufacturer of a premier lineup of high-capacity, lifetime guaranteed grease interceptors for commercial kitchens. %%EOF Grease Interceptors may be sized in accordance with Appendix H of the 2003 Uniform Plumbing Code (UPC) or Chapter 10 of the 2006 and 2009 . TRAP REQUIREMENTS. The above diagram would not be compliant with the UPC. Metro Vancouver acknowledges that the regions residents live, work, and learn on the shared territories of many Indigenous peoples, including 10 local First Nations: qi(Katzie), q: (Kwantlen), kikm (Kwikwetlem), mthxwi (Matsqui), xmkym (Musqueam), qiqyt (Qayqayt), semyame (Semiahmoo), Swxw7mesh Uxwumixw (Squamish), scan msteyx (Tsawwassen) and sllwta (Tsleil-Waututh). 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. . (2) Adjacent compartments within every oil interceptorshall be connected to each other by a vent opening. ?S]]__3`x~Mn-O_vW?o{W7W/NU/W|fw_qx-zfMSNgon>|~g^6/y%, #oi? 1nrkt`N=e _phk$k0Ja+JPGcG6J E $9 !'3e`AsXBDttxapi C"$> iF`L_i6c8rf`b0 ,_t Have two years of records on hand and available for inspection. I, and many others, have written about grease interceptors, probably because their design requirements are quite vague and interpretation varies all over the map. Wastewater leaving the grease interceptor must not exceed 300 mg/L of oil and grease and 600 mg/L of solids. 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 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. Exception: {FC?X* iFWo}'R]EXe` @ PDF Guidance Document for Grease Trap Interceptor and Separator 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. Proper maintenance is the key to meeting these limits. Keep a record of grease interceptor cleanouts and maintenance activities. Venting is required on the downstream drain line - the same as most other plumbing appliances and fixtures to allow ecient and unrestricted discharge of the waste water . grease interceptor. Referenced Codes: 2021 Uniform Plumbing Code (UPC) 2021 International Energy Code Compliance (IECC) If such is the case, they should be piped to the vent system and not left plugged, otherwise it may void the interceptor warranty. ArW&-z(P\'`H"k>:/zIb GQ` Do not purchase a grease interceptor without obtaining a building plan approval includingan Industrial Waste approval letterspecifying the size and design of the interceptor that will be required. Exception: As waste water flows through a kitchens plumbing (3-compartment sinks, prep sinks, mop sinks, dishwashers, floor drains, etc.) e.) Venting is recommended on both the inlet and outlet side of the interceptor, or as governed by local code. 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. Chapter 10: Traps and Interceptors, 2021 Oregon Plumbing - UpCodes 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. 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. Grease interceptors shall be constructed of durable, corrosion-resistant materials and shall have water-tight covers securely fastened in place. A vent shall be installed downstream of hydromechanical grease interceptors in accordance with the requirements of this code. (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. If such is the case, they should be piped to the vent system and not left plugged, otherwise it may void the interceptor warranty. Is it half the size of the connected waste piping? (pounds). Metro Vancouver 2023 | 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. PDF Guide To Grease Interceptors - Building in California . Privacy Statement 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. Our purpose is to serve and provide for our employees by being a resilient company that offers best-in-class products and services. 1003.9 Venting of interceptors and separators. 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. The UPC does not include provisions for AAVs except as a part of an "Engineered Vent System" under section 912.0, much to the chagrin of engineers around the country. (a) in no case be less than 1 in. 682 0 obj <>/Filter/FlateDecode/ID[<5810FA80BC1A8D4FB046C1418B49AE9E>]/Index[673 19]/Info 672 0 R/Length 62/Prev 181100/Root 674 0 R/Size 692/Type/XRef/W[1 2 1]>>stream wG xR^[ochg`>b$*~ :Eb~,m,-,Y*6X[F=3Y~d tizf6~`{v.Ng#{}}jc1X6fm;'_9 r:8q:O:8uJqnv=MmR 4 This is best done with an empty grease interceptor. {KGGj~]?=^FG.'>rvN_?O%g{ (ye~/^W|_\o\6EU17W2 pM=='.zkZ$b-j`RjFo[n(lw]ot[iQ %[I$tf CtD#"~\An=Chh(3mZP1~GcDn+{*H "4]V4.qAIi`HimHOh1Rc6A- As^3ZX_Q=a6> 75wMw/w[w @4 Y|kf j}`} 2|u}zv&a{e4F;sP|;IR.vuy-S`4y)%)` bc7. Metro Vancouver bylaw enforcement officers may inspect your grease interceptor and your maintenance records. This drawing shows a semi-automatic draw-off type grease interceptor but without a vented external flow control. Older service trucks have weaker vacuums, and theres no telling who will show up. Minimum 1"openingabove wallor vent hole Static LevelVent hole Minimum 1.5times diameter 4 / 5 of inlet pipe / 5 Minimum 2" Minimum 3 holes,each diameter of inlet pipingMinimum 1/2diameter ofinlet piping EXAMPLES OF BAFFLE WALLS 5 Outlet Assembly (pipe and diffuser)
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