1、Designation: F 2649 08aStandard Specification forCorrugated High Density Polyethylene (HDPE) GreaseInterceptor Tanks1This standard is issued under the fixed designation F 2649; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the ye
2、ar of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers material, design, structuralperformance, and manufacturing practice requirements formo
3、nolithic or sectional corrugated polyethylene grease inter-ceptor tanks with volumes equal to or greater than 333 gal(1,260 L).1.2 The corrugated high density polyethylene (HDPE)grease interceptor tanks are placed between commercial foodservice (kitchen) drains and sanitary sewer interceptors tomini
4、mize the impact of commercial food service effluentcontaining grease, oils, soap scum and other typical commer-cial food service wastes on the sanitary sewer system. Typicalsources of commercial kitchen effluent are scullery sinks, potand pan sinks, dishwashers, soup kettles and floor drains wheregr
5、ease containing materials may exist.1.3 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This specification covers pipe and fittings f
6、or horizon-tally laid corrugated HDPE grease interceptor tanks as illus-trated in Fig. 1.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practice
7、s and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 543 Practices for Evaluating the Resistance of Plastics toChemical ReagentsD 1600 Terminology for Abbreviated Terms Relating toPlasticsD 3212 Specification for Joints for Drain and
8、Sewer PlasticPipes Using Flexible Elastomeric SealsD 3350 Specification for Polyethylene Plastics Pipe andFittings MaterialsF 412 Terminology Relating to Plastic Piping SystemsF 477 Specification for Elastomeric Seals (Gaskets) forJoining Plastic PipeF 667 Specification for Large Diameter Corrugated
9、 Poly-ethylene Pipe and FittingsF 714 Specification for Polyethylene (PE) Plastic Pipe(SDR-PR) Based on Outside DiameterF 2306/F 2306M Specification for 12 to 60 in. 300 to 1500mm Annular Corrugated Profile-Wall Polyethylene (PE)Pipe and Fittings for Gravity-Flow Storm Sewer andSubsurface Drainage A
10、pplications2.2 IAPMO Document:3Uniform Plumbing CodeIAPMO/ANSI Z1001 Prefabricated Gravity Grease Inter-ceptors2.3 American Society of Civil Engineers4ASCE No.60 Gravity Sanitary Sewer Design and Construc-tion2.4 Plastic Pipe Institute5PPI TR-4 PE34082.5 AASHTO Document6:AASHTO LRFD Bridge Specifica
11、tions3. Terminology3.1 For definitions of terms relating to plastics, see Termi-nology F 412 and abbreviations are in accordance with Termi-nology D 1600, unless otherwise specified.3.2 Definitions of Terms Specific to This Standard:3.3 access opening, na hole in the top or crown of thetank used to
12、gain access to the inside of the tank for the purpose1This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.26 on OlefinBased Pipe.Current edition approved June 15, 2008. Published June 2008. Originallyapprove
13、d in 2008. Last previous edition approved in 2008 as F 264908.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website
14、.3Available from International Association of Plumbing and Mechanical Offi-cials, 5001 E. Philadelphia St., Ontario, CA 91761, http:/www.iapmo.org.4Available from American Society of Civil Engineers (ASCE), 1801 AlexanderBell Dr., Reston, VA 20191, http:/www.asce.org.5Available from Plastics Pipe In
15、stitute (PPI), 105 Decker Court, Suite 825,Irving, TX 75062, http:/www.plasticpipe.org.6Available from American Association of State Highway and TransportationOfficials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,http:/www.transportation.org.1Copyright ASTM International, 100 B
16、arr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.of cleaning and removing grease, floating scum and sludgewithout a person actually having to enter the tank.3.4 air scum volume, nthe number of cubic in. (cm) in thespace between the liquid surface and the underside of th
17、e topslab.3.5 baffle, na partition across the width of the tank thatextends partially between the top and bottom intended todeflect influent downward and increase the length of the flowpath of the liquid as it travels through the tank.3.6 grease interceptor tank system, na single tank orseries of ta
18、nks in which wastes from a kitchen or food serviceindustry containing no sanitary discharges is received andretained, and from which the liquid effluent, which is compara-tively free from settleable and floating solids, is then dis-charged to a public sewer, septic system, or approved treatmentsyste
19、m.3.7 inspection opening, na hole in the top or crown of thetank used for the purpose of observing conditions inside thetank.3.8 joint, na physical separation where two pieces of thetank or pipe-tank interface are in contact.3.9 monolithic corrugated high density polyethylene greaseinterceptor tank,
20、 na single extruded piece of pipe with nointernal joints other that end caps that serves as the principaltank structure.3.10 non-sealed joint, na joint where a machined fit willminimize the movement of liquid from one side of a wall to theopposite side.3.11 owner, nis by definition end user, custome
21、r, orpurchaser.3.12 sealed joint, na joint that is sealed to prevent liquidpassing from one side of a wall to the opposite side.3.13 sectional corrugated high density polyethylene greaseinterceptor tank, na group or two or more extruded pieces ofpipe connected with joints that when combined serve as
22、 theprincipal tank structure.4. Ordering Information4.1 The owner shall include the following information inbidding documents and on the purchase order, as applicable tothe units being ordered:4.1.1 Reference to this specification, and date of issue,4.1.2 Quantity or number of units ordered,4.1.3 Ca
23、pacity of tank in gal or L,4.1.4 Application conditions such as effluent and tempera-ture of discharge,4.1.5 Acceptance will be based on a review of the calcula-tions or on proof tests,4.1.6 Design requirements such as depth of earth cover, liveload applied at the surface, and ground water level, an
24、d4.1.7 Testing for water leakage shall not be required at thejob site unless specifically required by the owner at the time ofordering.5. Materials and Manufacture5.1 Basic MaterialsMaterials utilized for the fabricationof a corrugated polyethylene grease interceptor tank shall beevaluated for tempe
25、rature extremes and effluent constituents inaccordance with Practice D 543.5.1.1 Tank and RisersThe tank and risers shall be fabri-cated from pipe and fittings meeting the requirements ofSpecification F 2306/F 2306M.5.1.2 Inlet and Outlet TeesInlet and outlet tees shall befabricated from pipe and fi
26、ttings meeting the requirements ofSpecification F 2306/F 2306M or F 714.5.1.3 Vent pipes and internal tank pipingVent pipe andinternal piping within the grease interceptor shall be fabricatedfrom pipe and fittings meeting the requirements of Specifica-tion F 2306/F 2306M for dual wall pipe and Speci
27、ficationF 667 for single wall pipe.5.1.4 Baffles and End Caps Baffles and end caps shall befabricated from either flat plates meeting the requirements ofPPI TR-4 PE3408 material or blow molded fittings, rotation-ally molded fittings or injection molded fittings meeting therequirements of Specificati
28、on F 2306/F 2306M.5.2 Pipe ConnectionsPipe-to-tank connections shall em-ploy flexible connectors conforming to the requirements ofSpecification F 477. Materials for the connectors shall havedemonstrated resistance to the effects of fats, oils, grease, andfluid temperatures specified under Section 4.
29、6. Structural Design Requirements6.1 Structural design of grease interceptor tanks shall be bycalculation.6.1.1 Design by calculation shall be completed using theAASHTO LRFD Bridge Design Specifications, Section 12,“Buried Structures and Tunnel Liners”.FIG. 1 Standard Corrugated HDPE Grease Intercep
30、torF 2649 08a26.1.2 Tanks shall be designed so that they will not collapseor rupture when subjected to anticipated earth and hydrostaticpressures when the tanks are either full or empty.6.1.3 After installation conditions are established, loadsfromAASHTO LRFD Bridge Design Specifications, Section 3,
31、“Loads and Load Factors”, shall be used for design. Unlessheavier live loads are expected, the minimum live load at thesurface for design shall be an AASHTO H20 truck load.6.2 OpeningsThe structural design shall take into consid-eration the number, placement, and size of all openings.7. Physical Des
32、ign Requirements7.1 CapacitySizes are generally specified by local regu-lations and they shall supersede the following guidelines.When local regulations are not available, minimum greaseinterceptor capacity shall meet the performance requirementsof IAPMO/ANSI Z1001 orASCE No. 60 and be determined by
33、use of one of the two sizing options below:7.1.1 Option 1:The tank shall be sized in accordance with flow figures andfactors listed in the Uniform Plumbing Code.7.1.2 Option 2:The tank shall be sized by using the actual average daily-metered water use figures from the facility multiplied by asafety
34、factor of 1.5.7.2 Compartments:7.2.1 Grease interceptor tank systems that utilize multiplecompartments shall have the dividing walls welded to the tankbody.7.2.1.1 Welding of the dividing wall shall be done bycontinuous extrusion welding on both sides of the wall.7.2.1.2 Welding rod shall be of medi
35、um or high densitypolyethylene meeting the properties for the tank as requiredunder Specification F 2306 with the exception that the tensilestrength at yield shall not be less than 5000 psi (3.5 M Kg/m2).7.2.2 Multiple units installed in series are acceptable.7.2.3 Each compartment shall have a rise
36、r access for clean-out and maintenance.7.3 Influent and Effluent Pipes:7.3.1 The influent pipe shall be no less than 4 in. (100 mm)in diameter.7.3.2 The difference between the invert of the influent pipeand the invert of the effluent pipe shall be a minimum of 2 in.(50 mm).7.3.3 Inlet and outlet pip
37、es shall be connected to the tankwith a sealed flexible connector conforming to F 477 toaccommodate tank movement.7.4 Outlet Devices:7.4.1 If tees or outlet filters are added, they shall be madeof noncorrosive materials and be permanently connected withnoncorrosive fasteners to either the inside of
38、the tank or theoutlet pipe.7.4.2 Outlet filter device, if specified, shall be installed inaccordance with manufacturers recommendations or require-ments of regulating agencies, or both.7.4.3 Specifications for tees and outlet filters shall be inaccordance with normal, low-flow conditions. High-flow
39、con-ditions, created when liquid is pumped from another tank, willrequire consideration for other dimensions. Design by a regis-tered professional engineer is required for these cases.7.5 Openings in Tank Top:7.5.1 An access opening shall be located over the influenttee and the effluent tee. Where a
40、n opening has any dimensiongreater than 12 in. (300 mm) the cover shall weigh a minimumof 59 lb (27 kg.) or be provided with a lock system to preventunauthorized entrance.7.5.2 An access opening or openings shall be provided topermit pumping of all compartments.7.5.3 All openings, risers, and covers
41、 shall be sealed withresilient watertight seals meeting F 477.7.6 End Plates:7.6.1 End plates shall be welded to the ends of the pipesections to form the completed tank.7.6.1.1 Welding of the end plates shall be done by continu-ous extrusion welding on both sides of the wall.7.6.1.2 Welding rod shal
42、l be of medium or high densitypolyethylene meeting the properties for the tank as requiredunder Specification F 2306/F 2306M with the exception thatthe tensile strength at yield shall not be less than 5000 psi (3.5M Kg/m2).7.6.2 End plates shall be made of virgin PE plastic com-pound meeting the req
43、uirements of cell classification 445434Cas defined in Specification D 3350, except that carbon blackcontent shall not exceed 4 %. Compounds that have a highercell classification in one or more properties shall be permittedprovided all other product requirements are met.8. Quality Control and Samplin
44、g8.1 The manufacturer shall certify that the product meetsthree criteria: (1) water tightness, (2) physical dimensions, and(3) strength of grease interceptor tank.8.2 Installation shall be in accordance with manufacturersinstructions.9. Performance Test Methods9.1 Testing for leakage of the tank sha
45、ll be performed usingeither vacuum testing or water-pressure testing. This testing isonly to confirm the integrity of the welds and homogenousquality of the wall. Pressure testing of the joints and anysimilar connections shall be in accordance with 9.2.9.1.1 Vacuum TestingSeal the empty tank and app
46、ly avacuum to 100 mm (4 in.) of mercury. The tank is approved ifthe vacuum is held for 2 min.9.1.2 Water-Pressure TestingSeal the tank and fill withwater. The tank is approved if water level is held for minimumof 15 minutes with no signs of leakage.9.2 Testing of all bell and spigot joints shall be
47、inaccordance with Specification D 3212.10. Dimensions and Permissible Variations10.1 Dimensional TolerancesThe length, width, height, ordiameter measurements of the grease interceptor tank whenmeasured on the inside surface shall not be less than 99% of thedesign dimensions.F 2649 08a311. Repairs11.
48、1 Repairs of corrugated HDPE grease interceptor tanks,when required, shall be performed in accordance with themanufacturers recommendations in a manner ensuring that therepaired grease interceptor tank will conform to the require-ments of this specification.12. Rejection12.1 Corrugated HDPE grease i
49、nterceptor tanks or sectionsof grease interceptor tanks shall be subject to rejection becauseof failure to conform after repairs to any of the requirementscontained in this specification.13. Product Marking13.1 Each grease interceptor tank shall be clearly markedwithin 2 ft (0.6 m) of the inlet to the tank by indentation orother approved means with (1) date manufactured, (2) name ortrademark of the manufacturer, (3) tank capacity, (4) minimumand maximum amount of earth cover in ft (or m), inlet andoutlet clearly identified with this designation ASTM
