1、Designation:D 4021-92AMERICAN SOCIETY FOR TESTING AND MATERIALSAn Amercan National Standard1916 Race St Phiadelphia,Pa 10103Reprinted from the Annual Book of ASTM Standards.Copyright ASTMIf not listed in the curtent combined index,will appear in the nexd editionStandard Specification forGlass-Fiber-
2、Reinforced Polyester Underground PetroleumStorage Tanks1This standard is issued under the fixed designation D 4021:the number immediately following the designation indicates the year oforiginal adoption or.in the case of revision,the year of last revision.A number in parentheses indicates the year o
3、f last reapproval.Asuperscript epsilon(indicates an editorial change since the last revision or reapproval.1.ScopeD2583 Test Method for Indentation Hardness of Rigid1.1 This specification covers glass-fiber-reinforced hori-Plastics by Means of a Barcol Impressorzontal,cylindrical,and spherical-type
4、underground tanks forD2584 Test Method for Ignition Loss of Cured Rein-atmospheric pressure storage of petroleum based fuels andforced ResinsD3299 Specification for Filament-Wound Glass-Fiber-oils.ReinforcedThermoset Resin Chemical-Resistant1.2 The values given in parentheses are provided forTanksin
5、formation purposes only.1.3 The following safety hazards caveat pertains only toF 412 Terminology Relating to Plastic Piping Systems2.2 Other Documents:the test method portion,Section 8,of this specification:ThisANSI B2.1 American Standard Tapered Pipe Threads*standard does not purport to address al
6、l of the safetyANSI B16.5 Steel Pipe Flanges,Flanged Valves,andproblems,if any.associated with its use.It is the responsi-Fittingsbility of the user of this standard to establish appropriateASME Boiler and Pressure Vessel Code Section III.safety and health practices and determine the applicability o
7、fDivision I-Sub Section ND9regulalory limitations prior to use.3.Terminology3.1 Definitions-Definitions are in accordance with Ter-2.Referenced Documentsminology D883 and F 412,and abbreviations with Termi-2.1 ASTM Standards:nology D 1600,unless otherwise indicated.C 33 Specification for Concrete Ag
8、gregates23.1.I cylinder wall-that portion of a tank that forms theC 581 Practice for Determining Chemical Resistance ofmain body of a tank,and that part that lies horizontal in theThermosetting Resins Used in Glass-Fiber-Reinforcedground after installation.(See Fig.I for further clarification.)Struc
9、tures Intended for Liquid Service3.43.1.2 fill tubes-devices attached to a tank to assist inC 582 Specification for Contact-Molded Reinforced Ther-filling.These devices normally attach to a tank top andconvey the liquid to or near to the tank bottom.mosetting Plastic(RTP)Laminates for Corrosion Resi
10、s-3.1.3 fittings-openings used to provide a means to fill.tant Equipmentextract,or vent the contents of a tank.D471 Test Method for Rubber Property-Effect ofLiquidss3.1.4 lifting device-hook-on type device attached to atank to provide means of lifting a tank.D618 Practice for Conditioning Plastics a
11、nd Electrical3.1.5 manways-entrance ways installed in a tank for theInsulating Materials for Testing3purpose of access into a tankD698 Test Methods for Moisture-Density Relations of3.1.6 spherical tanks-tanks that are spherical or nearSoils and Soil-Aggregate Mixtures Using 5.5-lb(2.49-kg)spherical
12、in shape.These tanks may be formed in one pieceRammer and 12-in.(305-mm)Dropor may be formed by joining two hemispherical like tankD790 Test Methods for FlexuralProperties ofheads together.Unreinforced and Reinforced Plastics and Electrical3.1.7 tank heads-that portion of a tank that closes theInsul
13、ating Materials3ends of the cylinder,making a tank into a container.EachD883 Terminology Relating to Plastics3.4tank has two tank heads.(See Fig.I for further clarification.)D 1600 Terminology for Abbreviated Terms Relating toPlastics344.Materials4.1 Resin-The resin used shall be a commercial-gradeu
14、nsaturated polyester resin.This specification is under the jurisdiction of ASTM Committee D-20 on4.2 Reinforcing Materials-Reinforcing materials shall bePlastics and is the direct responsibility of Subcommittee D20.23 on ReinforcedPlastic Piping Systems and Chemical Equipment(Section D20.23.16)comme
15、rcial Etype glass in the form of mat,continuousCurrent edition approved June 15,1992.Published October 1992.Originallypublished as D 4021-81.Last previous edition D4021-86.2 Annirul Book of ASTM Standards,Vol 04.02.Annual Book of ASTM Standards,Vol 08.023 Anmal Bouk of ASTM Standards.Vol 08.01.s Ava
16、ilable from American National Standards Institute.II West 42nd Street.*Anmial Book of ASTM Standards.Vot 08.0413th Floor,New York,NY 10036.3 Awnral Book of ASTM Standards.Vol 09.01.9Available from American Society of Mechanical Engineers.United EngiAnmndl Book of ASTM Standards.Vot 04.08neering Cent
17、er.345 E.47th St.New York,NY 10017.41D402115 psig(103.5 kPa)when tested in accordance with 8.5with 8.13,the log of percent retention of each property after6.6 Fitting Moment Load Rating-Fittings 2 in.andimmersion testing.when plotted against the log of immer-smaller shall withstand,without damage,a
18、moment load ofsion time and extrapolated to 100 000 h,shall assure1000 Ibf.ft(1356 N.m)and fittings greater than 2 in.shallretention of at least 50%of the initial properties.If at thewithstand,without damage,a moment load of 2000 Ibf.ftend of the prescribed testing period,all properties except the(2
19、712 N.m)when tested in accordance with 8.6.After thebarcol hardness meet the above criteria,extension of thetest the fitting shall not leak when tested in accordance withtesting for an additional six months is required.All proper-8.8ties except barcol hardness at the end of this extended testing6.7
20、Fitting Torque Load Rating-Each installed fittingperiod must retain at least 50%of the initial properties whenshall withstand,without damage,the loads in Table 3 whenextrapolated to 100 000 htested in accordance with 8.7.After the test,the fitting shallNoTE 4-Chemical testing is conducted to determi
21、ne the applica-not leak when tested in accordance with 8.8.bility of the tank materials of construction to specific use conditions.It is6.8 Leakage-When tested in accordance with 8.8,tanksnot considered to be a quality control procedure.of 120 in.(3048 mm)diameter and less,complete withattachments,s
22、hall not leak at a pressure level of 5 psig(34.57.Quality ControlkPa),and tanks greater than 120 in.(3048 mm)diameter,7.I Examination-Each tank component shall be exam-complete with attachments,shall not leak at a pressure levelined for dimensional requirements,hardness,and workman-of 3 psig(20.7 kP
23、a).ship.6.9 Internal Impact Resistance-The internal tank wall7.2 Leakage-Each tank shall be tested in accordancesurface shall withstand,without visible damage,the impactwith 8.8 to determine conformance with 6.8.of an 0.8-1b(0.36-kg)steel ball when tested in accordance7.3 Negative Pressure-Each tank
24、 shall be tested in accor-with 8.9.dance with 8.1 I to determine conformance with 6.11.6.9.1 After impact with the steel ball as described in 6.9,7.4 Composition Control-Controls on glass,resin,fillers.the tank shall not leak when tested in accordance with 8.8.and additives shall be maintained for a
25、ll manufacturing6.10 Lifting Lug Loading-All lifting lugs must meet orprocesses and for each portion of tank fabrication.Recordsexceed a load rating equal to two times the weight of theshall be maintained of these control checks.Proper compo-empty tank when tested in accordance with 8.10.The tank,si
26、tion may be shown by glass usage checks,by glass and resinas a result of the test,must not leak or suffer other damage.Ifapplication rate checks,or in accordance with the materialthe tank has more than one lifting device,the devices shallcomposition test in 8.12.1.meet the requirement in combination
27、.6.11 Negative Pressure-The tank shall withstand nega-NoTE 5-Weighing of finished parts and periodic testing for materialtive pressure of-2.5 psig(-17.3 kPa)when tested inproperties may provide additional assurance of quality.accordance with 8.11.8.Test Methods6.12 Material Properties-The following
28、properties shallbe established for each type of construction used in the tank8.1 Cunditioning-Conditioning of the test specimen isusing test specimens obtained in accordance with 8.12.not required unless otherwise specified by the test method6.12.1 Material composition in percent by weight shall ber
29、eferenced.When required,conditioning of the specimendetermined in accordance with 8.12.1.prior to test shall be at73.43.6F(232C)and505%6.12.2 Flexural strength in the hoop and axial directionrelative humidity for not less than 40 h,in accordance withshall be determined in accordance with 8.12.2.Proc
30、edure A of Methods D 618.6.12.3 Flexural modulus in the hoop and axial direction8.2 Test Conditions-Tests shall be conducted at ambientshall be determined in accordance with 8.12.2.temperatures without any special controls on temperature or6.12.4 Surface hardness shall be determined in accor-humidit
31、y,unless otherwise specified in the test methoddance with 8.12.3.The minimum initial value shall be notreferenced.less than 90%of the resin manufacturers minimum value8.3 Dimensions.for the cured resin.8.3.I Measure dimensions other than thickness with a6.13 Chemical Resistance-When tested in accord
32、anceTABLE 4 Test Media for Chemical Resistance TestTABLE 3 Fitting Torque Load RequirementsInterior SurfaceFitting SizeTorque LoadASTM Relerence Fuel C(as specified in Method D 471)in.mmlbf.iN-mCommercial unleaded premlum gasolineUnleaded gasoline.ethyl alcohol 90 to 10%blend gasohol0.751167226No.2
33、Fuel Oil1.0025200271Distilled water1.251506328Sodium carbonate-sodium bicarbonate solution(pH 10)350Potassium biphthalate buffer(pH4)275373Material to be contained in the tank if other than above.2923963.0076300407Exterior Surface4.0010317430Sodium chloride,saturated sclution8.00152350475Sodium carbonate-sodium bicarbonate solution simulating alkaline soll(pH 10)8.00203383519Potassium biphthalate buffer simulating acidic soi(pH4)
