UL SUBJECT 330A-2012 OUTLINE OF INVESTIGATION FOR HOSE AND HOSE ASSEMBLIES FOR USE WITH DISPENSING DEVICES DISPENSING GASOLINE AND GASOLINE ETHANOL BLENDS WITH NOMINAL ETHANOL CONC.pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNovember 2, 20121UL 330AOUTLINE OF INVESTIGATIONFORHOSE AND HOSE ASSEMBLIES FOR USE WITH DISPENSING DEVICESDISPENSING GASOLINE AND GASOLINE/ETHANOL BLENDS WITHNOMINAL ETHANOL CONCENTRATIONS UP TO

2、 85 PERCENT (E0 E85)Issue Number: 1November 2, 2012SUMMARY OF TOPICSThis is the First Issue of Subject 330A, Outline of Investigation for Hoseand Hose Assemblies for Use With Dispensing Devices DispensingGasoline and Gasoline/Ethanol Blends With Nominal EthanolConcentrations Up To 85 Percent (E0 E85

3、).This issue becomes effective November 2, 2012.COPYRIGHT 2012 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNOVEMBER 2, 2012UL 330A2No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODU

4、CTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .62 General 72.1 Units of Measurement .72.2 Undated References 73 Glossary .7PERFORMANCE4 Tube and Cover 84.1 Single-line hose and double-line vapor recovery hose .84.2 Coaxial vapor recovery hose .95 Thickness of Cover 96 In

5、ternal Diameter 107 Reinforcement .108 Electrical Bonding 109 Couplings .1010 Materials .1110.1 Metallic materials .1110.2 Nonmetallic materials .13PERFORMANCE11 General 1712 Repeating Bending Test (Empty) .1812.1 General .1812.2 Sample .1812.3 Apparatus .1812.4 Method .1813 Hydrostatic Strength Tes

6、t .2013.1 General .2013.2 Sample .2013.3 Apparatus .2013.4 Method .2114 Resistance To External Pressure for Inner Vapor Recovery Hose 2114.1 General .2114.2 Sample .2114.3 Apparatus .2114.4 Method .2115 Resistance To External Pressure for Inner Vapor Recovery Hose 2215.1 General .2215.2 Sample .2215

7、.3 Apparatus .2215.4 Method .2316 Permeation Test (For Low Permeation Hose) 2316.1 General .2316.2 Test equipment 2316.3 General test procedure and instructions .2416.4 Samples 25NOVEMBER 2, 2012 UL 330A 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSI

8、ON FROM UL16.5 Pretest procedure 2516.6 Preconditioning procedure .2616.7 Permeation test procedure 2616.8 Steady state criteria 2717 Electrical Resistance Tests for Hose Having Nonmetallic Electrically Conductive Materials . .2817.1 General .2817.2 Samples 2817.3 Apparatus .2817.4 Method .2818 Leak

9、age and Electrical Continuity Test 2918.1 General .2918.2 Sample .2918.3 Apparatus .2918.4 Method .3019 Swivel Joint Operation Test 3019.1 General .3020 Pull Test .3020.1 General .3020.2 Sample .3020.3 Equipment .3120.4 Method .3121 Adhesion Test 3121.1 General .3121.2 Sample .3221.3 Apparatus .3221

10、.4 Method .3222 Deformation Test .3223 Kink Test 3324 Tensile Strength and Elongation Tests for Hose Components 3324.1 General .3324.2 Samples 3324.3 Apparatus .3424.4 Method .3425 Accelerated Air Oven Aging Test for Hose Components .3525.1 General .3525.2 Samples 3525.3 Apparatus .3525.4 Method .35

11、26 Ozone Exposure Test .3626.1 General .3626.2 Samples 3626.3 Apparatus .3626.4 Method .3627 Ultraviolet Light and Water Exposure Test .3727.1 General .3727.2 Sample .3727.3 Apparatus .3727.4 Method .3728 Immersion Tests for Hose Components .3728.1 Tensile strength and ultimate elongation 3728.2 Vol

12、ume change 3929 Low Temperature Test 4029.1 General .40NOVEMBER 2, 2012UL 330A4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL29.2 Sample .4029.3 Apparatus .4029.4 Method .4030 Long Term Exposure Test for Hose and Hose Assemblies .4130.1 Gene

13、ral .4130.2 Samples 4130.3 Method .4231 Blending Cycle Test .4232 Bending Test for Hose Assemblies with Internal Spring .43MANUFACTURING AND PRODUCTION TESTS33 General 43MARKING34 Details .44SUPPLEMENT SA - TEST FLUIDSSA.1 Details .SA1NOVEMBER 2, 2012 UL 330A 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED

14、FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements cover hose and hose assemblies, including vapor recovery hose andassemblies, for use on dispensing devices for motor fuels. A flammable liquid hose assembly consists offlexible hose and fittin

15、gs suitable for attachment to motor fuel dispensing equipment. Motor fuels, asdefined by these requirements, include one or more of the fuels described in 1.2.1.2 Hose and hose assemblies covered by these requirements are intended for use with one or more ofthe following motor fuels:a) Gasoline form

16、ulated in accordance with the Standard Specification for Automotive Spark-Ignition Fuel, ASTM D4814;b) Gasoline/ethanol blends with nominal ethanol concentrations up to 25 percent ethanol (E25),consisting of gasoline formulated in accordance with the Standard Specification for AutomotiveSpark-Igniti

17、on Fuel, ASTM D4814, when blended with denatured fuel ethanol formulated to beconsistent with the Standard Specification for Denatured Fuel Ethanol for Blending WithGasoline for Use as Automotive Spark-Ignition Engine Fuel, ASTM D4806; orc) Gasoline/ethanol blends with nominal ethanol concentrations

18、 above 25 percent formulated inaccordance with the Standard Specifications in item (b) or formulated in accordance with theStandard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-IgnitionEngines, ASTM D5798, as applicable.1.3 Hose assemblies are intended for use in accordan

19、ce with the Code for Motor Fuel DispensingFacilities and Repair Garages, NFPA 30A.1.4 These requirements cover hose and hose assemblies (hose with couplings attached) in sizes up toand including 1-1/2 inches (38.1 mm).1.5 Hose for conveying liquid fuel is intended for use at a maximum working pressu

20、re of 50 psig (345kPa). Hose for conveying fuel vapors is intended for use at a maximum working pressure of 0.5 psig (3.4kPa), including slight negative pressures from vacuum assist systems.1.6 These requirements cover hose and hose assemblies for use at temperatures down to minus 40C(minus 40F) or

21、optionally down to minus 54C (minus 65F).1.7 These requirements also cover fuel hose assemblies optionally designated as “low permeation.” Forthe purposes of this standard, permeation is considered to encompass fuel loss through the flexible hose,fuel loss at the fittings and fuel loss at the connec

22、tion between the hose assembly and the equipment towhich it is intended to be attached in the dispensing system.1.8 These requirements do not cover hose or hose assemblies, intended for use in automotive vehiclesor in confined areas, except for locations inside the housings of dispensing devices com

23、plying with theOutline of Investigation For Power-Operated Dispensing Devices For Gasoline and Gasoline/EthanolBlends With Nominal Ethanol Concentrations Up To 85 Percent (E0 E85), UL 87A.NOVEMBER 2, 2012UL 330A6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT P

24、ERMISSION FROM UL1.9 These requirements do not cover hoses or hose assemblies for use with any other fuel other than asdescribed in 1.2.2 General2.1 Units of Measurement2.1.1 When a value for measurement is followed by a value in other units in parentheses, the first statedvalue is the requirement.2

25、.2 Undated References2.2.1 Any undated reference to a code or standard appearing in the requirements of this Outline shall beinterpreted as referring to the latest edition of that code or standard.3 Glossary3.1 For the purposes of this outline, the following definitions apply.3.2 ADJUSTED MASS LOSS

26、The mass loss of the blank (unfilled hose assembly) subtracted fromthe mass loss of a filled hose assembly. The purpose of this is to adjust for factors other than fuelpermeation that may affect mass loss.3.3 BALANCE VAPOR RECOVERY HOSE A coaxial hose consisting of an inner line for conveyingfuel an

27、d an outer line. Fuel vapors are permitted to return to the fuel dispenser in the annular spacebetween the two lines.3.4 BLENDING OPTION Dispensing devices may be provided with an option that blends two specificfuels into one fuel to be dispensed. This blending occurs at the dispenser level and can

28、be in twoforms:a) Fixed blending Blending at the dispenser level that blends two specific fuels into one fuelto be dispensed, and that fuel to be dispensed is fixed. For example, fixed blending includesblend options where gasoline and denatured fuel ethanol can be blended to achieve E85, whichis the

29、 actual dispensed fuel.b) Variable blending Blending at the dispenser level that blends two specific fuels into the fuelto be dispensed, but the fuel to be dispensed can be any of a number of previously set points.For example, variable blending includes blend options where gasoline and E85 can be bl

30、endedto achieve E40, E60, and E85 as the actual dispensed fuel.3.5 DISPENSING DEVICE A product consisting of various components that is used to control andmeter the flow of liquid from an upstream storage device.3.6 HOSE ASSEMBLY VOLUME (V) The total volume in cubic centimeters of a capped hoseassem

31、bly, calculated as follows:V=D2(L + 2d) pi/4in which:D = the inner diameter of the hose in centimeters, as determined in 16.5.3NOVEMBER 2, 2012 UL 330A 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULL = the length of the hose in centimeters,

32、 as determined in 16.5.1d = the depth of the cap in centimeters, as determined in 16.5.23.7 LEAST SQUARES FIT LINE A best fit line drawn through a set of data such that the sum of thesquared residuals has its least value, a residual being the difference between an observed value (datapoint) and the

33、line.3.8 PERMEATION SURFACE AREA The length of the hose as determined in 16.5.1 multiplied bythe inner circumference of the hose, expressed in square meters. For vacuum-assist vapor recoveryhose, the length of the hose is multiplied by the inner circumference of the outer hose. For balancevapor reco

34、very hose, the length of the hose is multiplied by the average inner circumference of theouter hose.3.9 REINFORCEMENT Natural or synthetic fibers or fabric, or metallic wire that is wrapped, braidedor spiral wound in one or more layers over the tube, intended to provide longitudinal and transverse(h

35、oop) strength to the hose.3.10 SEAL, DYNAMIC A seal that is subject to mechanical movement or other applied forces thatresult in movement or flexing of the seal under normal use conditions.3.11 SEAL, STATIC A seal that is not subject to mechanical movement or other applied forces otherthan compressi

36、ng forces that are applied during installation and maintained during normal useconditions.3.12 VACUUMASSIST VAPOR RECOVERY HOSE A coaxial hose consisting of an inner vacuumline for vapor recovery and an outer line. Fuel is dispensed through the annular space between the twolines.PERFORMANCE4 Tube an

37、d Cover4.1 Single-line hose and double-line vapor recovery hose4.1.1 The tube shall be made from a material resistant to the fuels anticipated by these requirements.4.1.2 The cover shall be made from a material resistant to the fuels anticipated by these requirementsand ozone.4.1.3 The tube and cove

38、r shall be of uniform thickness, and free from pitting, blisters, or otherimperfections. This requirement is not intended to exclude the use of a corrugated cover.NOVEMBER 2, 2012UL 330A8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4.2 Coax

39、ial vapor recovery hose4.2.1 The tube and cover, if any, of the inner hose shall be made from materials resistant to the fuelsanticipated by these requirements.4.2.2 The tube of the outer hose or a homogeneous outer hose shall be made from materials resistant tothe fuels anticipated by these require

40、ments.4.2.3 The cover of the outer hose or a homogeneous outer hose shall be made from a material resistantto the fuels anticipated by these requirements and ozone. An outer homogeneous thermoplastic hose withno separate layer of reinforcement shall also be made from a material resistant to sunlight

41、.4.2.4 The tube and cover shall be of uniform thickness and free from pitting, blisters, or otherimperfections. This requirement is not intended to exclude the use of a corrugated tube, cover, or outervapor hose.5 Thickness of Cover5.1 The thickness of the cover shall not be less than 0.047 inch (1.

42、19 mm) when measured in accordancewith 5.2 5.6.Exception: This requirement does not apply to the cover of the inner hose and the outer vapor hose ofa coaxial type vapor recovery hose.5.2 For removing irregularities in samples, the buffing machine or skiving machine outlined in theStandard Practice f

43、or Rubber Preparation of Product Pieces for Test Purposes from Products, ASTMD3183, is to be used.5.3 The abrasive wheel of the buffing machine is to be No. 30 60 grit and the diameter and rotaryvelocity of the wheel are to be such that it will have a peripheral speed of 4000 700 feet per minute (20

44、.33.6 m/s). The machine is to be provided with a slow feed so that very little compound can be removedat one cut to avoid overheating of the specimen.5.4 A dial micrometer graduated to 0.001 inch (0.03 mm) that exerts a load of 2.82 3.00 ounces (80 85 grams) by means of a weight is to be used to mea

45、sure thickness. he load is to be applied through aflat contact foot 0.25 0.01 inch (6.4 0.3 mm) in diameter.5.5 To determine the thickness of the tube and cover, a strip,68inches (152.4 203.2 mm) long and1 inch (25.4 mm) wide, or as close to 1 inch (25.4 mm) as possible from small diameter hose, is

46、to be cutlongitudinally from the hose, and the part separated from the plies. When the thickness of the part is notuniform around the circumference of the hose, the strip is to be cut from the thinnest portion of the sample.5.6 The strip specimen is to be buffed or skived to remove the impressions l

47、eft by the fabric or braid orother surface irregularities, using the equipment described in 5.2 and 5.3. A series of five thicknessmeasurements are to be taken within the area from which the impressions have been removed, and themaximum reading obtained is to be taken as the thickness of the part.NO

48、VEMBER 2, 2012 UL 330A 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL6 Internal Diameter6.1 The internal diameter of a hose shall be equal to the nominal diameter 1/32 inch (0.8 mm) for sizesup to and including 3/4 inch (19.0 mm) and 1/16 i

49、nch (1.6 mm) for larger sizes.6.2 A tapered plug gauge of wood or metal having a taper of 3/8 inch per foot (31.3 mm/m), marked toindicate variations of 1/64 inch (0.4 mm) in diameter, or a set of wood or metal plug gauges, straight orball type, in increments no greater than 0.01 inches (0.25 mm) for hoses in sizes 1 inch (25.4 mm) andless and 0.02 inches (0.51 mm) for hoses in sizes greater than 1 inch (25.4 mm), shall be used formeasuring the internal diameter. An expanding ball gauge, and a micrometer or other equivalent mea