UL SUBJECT 124-2008 OUTLINE OF INVESTIGATION FOR HAND-OPERATED PUMPS FOR FLAMMABLE AND COMBUSTIBLE LIQUIDS (Issue 2)《易燃和可燃液体用手动泵的调查大纲 发布编号 2》.pdf

《UL SUBJECT 124-2008 OUTLINE OF INVESTIGATION FOR HAND-OPERATED PUMPS FOR FLAMMABLE AND COMBUSTIBLE LIQUIDS (Issue 2)《易燃和可燃液体用手动泵的调查大纲 发布编号 2》.pdf》由会员分享，可在线阅读，更多相关《UL SUBJECT 124-2008 OUTLINE OF INVESTIGATION FOR HAND-OPERATED PUMPS FOR FLAMMABLE AND COMBUSTIBLE LIQUIDS (Issue 2)《易燃和可燃液体用手动泵的调查大纲 发布编号 2》.pdf（18页珍藏版）》请在麦多课文档分享上搜索。

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAugust 8, 20081SUBJECT 124OUTLINE OF INVESTIGATIONFORHAND-OPERATED PUMPS FOR FLAMMABLE AND COMBUSTIBLE LIQUIDSIssue Number: 2AUGUST 8, 2008Summary of TopicsThis second issue of Outline Subject 12

2、4 has been revised to correct thetitle of the test in Section 19.The UL Foreword is no longer located within the UL Standard. For informationconcerning the use and application of the requirements contained in thisStandard, the current version of the UL Foreword is located onULStandardsInfoNet at: ht

3、tp:/ 2008 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAUGUST 8, 2008SUBJECT 1242No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONT

4、ENTSINTRODUCTION1 Scope .52 General 62.1 Components .62.2 Units of measurement .62.3 Undated references .63 Glossary .6CONSTRUCTION4 Assembly 75 Materials .76 Bodies, Covers, and Heads 87 Drive Shaft Seals .98 Diaphragm .99 Springs 910 Guards .911 Piping and Fittings 1012 Hose and Couplings 10PROTEC

5、TION AGAINST INJURY TO PERSONS13 General 1014 Sharp Edges .10PERFORMANCE15 General 1116 External Leakage Test 1117 Endurance Test 1118 Electrical Continuity Test 1219 Hydrostatic Strength Test 1220 Deformation Test .1221 Immersion Test .1322 Dimensional Stability Test .1423 10-Day Moist Ammonia-Air

6、Stress Cracking Test .14MANUFACTURING AND PRODUCTION LINE TESTS24 General 15MARKING25 General 1526 Cautionary Markings 1627 Permanency of Marking .16AUGUST 8, 2008 SUBJECT 124 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINSTRUCTION MANUAL

7、S28 General 1629 Instructions Pertaining to a Risk of Injury to Persons 1730 Installation Instructions 1831 Operating Instructions .1832 User-Maintenance Instructions .18AUGUST 8, 2008SUBJECT 1244UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM U

8、LINTRODUCTION1 Scope1.1 These requirements cover hand-operated pumps intended to handle flammable and combustibleliquids.1.2 These pumps are intended to be attached to a threaded flange in the head or side of a barrel, drum,or other similar container.1.3 “Flammable and combustible liquids” as used h

9、erein refers to the fuels shown in (a) (g) and thevapors of these fuels:a) Gasoline;b) Gasoline/ethanol blends up to 15 percent ethanol;c) Gasoline/methanol blends up to 15 percent methanol;d) Diesel fuel;e) Fuel oil;f) Lubricating oil; andg) Kerosene.Hand operated pumps investigated to the requirem

10、ents of this outline shall be evaluated to the applicablefuels from (a) (g) as specified by the manufacturer.1.4 These pumps are evaluated in accordance with the applicable installation and operationalrequirements in the Flammable and Combustible Liquids Code, NFPA 30.1.5 This outline does not cover

11、 hand-operated pumps for liquids other than shown in 1.3.AUGUST 8, 2008 SUBJECT 124 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL2 General2.1 Components2.1.1 Except as indicated in 2.1.2, a component of a product covered by this outline sh

12、all comply with therequirements for that component.2.1.2 A component is not required to comply with a specific requirement that:a) Involves a feature or characteristic not required in the application of the component in theproduct covered by this outline orb) Is superseded by a requirement in this o

13、utline.2.1.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.2.1.4 Specific components are incomplete in construction features or restricted in performancecapabilities. Such components are intended for use only under limited conditions, such as c

14、ertaintemperatures not exceeding specified limits, and shall be used only under those specific conditions.2.2 Units of measurement2.2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.2.3 Undated references2.3.1 Any undated refer

15、ence 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 DIAPHRAGM A dividing membrane or thin partition that is used to

16、 provide the pumping action.3.3 DISCHARGE NOZZLE A component through which the fuel can be dispensed.3.4 MANUAL PUMP A non-powered device used to transfer liquids from a container to anothercontainer or device.AUGUST 8, 2008SUBJECT 1246UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION

17、ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONSTRUCTION4 Assembly4.1 The construction of a pump shall be such that parts can be assembled in the intended manner afterbeing dismantled to the extent needed for replacement of parts or for other maintenance or servicing.4.2 When a pump requires the use of

18、 special pipe flanges, gaskets, bolts, or other special fittings or partsfor making connections, such parts shall be furnished as part of the pump assembly.4.3 A product shall be formed and assembled so that it will have the strength and rigidity necessary toresist the abuses to which it is likely t

19、o be subjected, without resulting in a risk of injury to persons due tototal or partial collapse, loosening or displacement of parts, or other serious defects.5 Materials5.1 A metal part to be used for bodies or closures shall be iron, steel, brass, aluminum, or other similarmaterial, inherently res

20、istant to the action of the liquid to be handled. Other parts in contact with the liquidto be handled shall be resistant to the action of such liquid when malfunction of the part results in:a) Leakage;b) Malfunction of equipment attached to the pump; orc) A risk of injury to persons.5.2 An elastomer

21、ic part used in contact with liquid or vapor shall have the properties of Volume Changeand Extraction as specified in the requirements in the Standard for Gaskets and Seals, UL 157, forend-use applications of the applicable fuels shown in 1.3.Exception No. 1: Polytetrafluoroethylene (PTFE) is consid

22、ered to comply with the requirements of thisparagraph.Exception No. 2: When an elastomeric part does not comply with the requirements described in 5.2, thepump assembly shall be evaluated in accordance with the Immersion Test, Section 21.5.3 The Standard for Gaskets and Seals, UL 157, provides for t

23、he testing of either finished elastomericparts or sheet or slab material. Sheet or slab material is to be tested when the elastomeric parts areO-rings having a diameter of less than 25 mm (1 in). The material tested is to be the same as that usedin the product, regardless of whether finished elastom

24、eric parts, or sheet or slab material is tested.5.4 A plastic part of a pump that comes in contact with fluid or vapor, and whose malfunction results inthe hazards specified in 5.1, shall comply with the Dimensional Stability Test, Section 22.5.5 Sand castings used in the construction of liquid conf

25、ining parts, failure of which will allow externalleakage, shall be free from porosity leakage and shall have a design thickness of not less than thatspecified in Table 5.1.AUGUST 8, 2008 SUBJECT 124 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FR

26、OM ULTable 5.1Minimum thickness of liquid-confining sand castingsMinimum wall thickness,Material inch (mm)Cast iron 3/16 4.8Malleable iron, ductile iron, or cast steel 1/8 3.2Brass or bronze 3/32 2.4Aluminum 5/32 4.05.6 A liquid confining part made of drawn brass or machined from brass rod, and cons

27、isting of 15 percentor more zinc content, shall withstand, without cracking, the 10-Day Moist Ammonia-Air Stress CrackingTest, Section 23.5.7 All metal parts that come in contact with the liquid to be handled shall be hot-dip galvanized orotherwise coated in an acceptable manner to retard corrosion

28、if not made of brass or other corrosionresistant material. Surfaces subject to injury in storage, handling, or assembly shall be hot-dip galvanized.Where outer walls of ferrous castings are not less than 1/4 inch in thickness and have been proven bytest to be free from leaks and porosity, the surfac

29、es are not required to be coated.5.8 All exposed metal parts susceptible to corrosion shall be well painted if not otherwise coated to retardcorrosion.6 Bodies, Covers, and Heads6.1 A pump body assembly shall withstand the deformation test requirements specific in DeformationTest, Section 20.6.2 Plu

30、gs and other parts, other than cap screws and bolts threaded into non-corrosion resistant ferrousparts of the pump, shall be of corrosion resistant metal or provided with a protective coating when theyare required to be removed for adjustment and repair, or other care of the pump.6.3 A bolt or a scr

31、ew hole shall not extend through the outer walls of a pump body into a liquid handlingsection.AUGUST 8, 2008SUBJECT 1248UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL7 Drive Shaft Seals7.1 A stuffing box or seal shall comply with the require

32、ments in the Endurance Test, Section 17.7.2 The stuffing box recess shall be such that packing material does not come into contact with screwthreads.7.3 An adjustable stuffing box, when guarded or not accessible, or when clearly visible to the operator,shall be provided with a spring-loaded follower

33、 gland or the equivalent.7.4 An automatic spring take-up for a gland shall employ a spring made of corrosion resistant materialor coated to retard corrosion.7.5 The physical characteristics of a take-up spring shall be such that it advances the gland through notless than one-half its possible travel

34、 from its initial setting with the spring compressed.8 Diaphragm8.1 A metal part coming in contact with a diaphragm shall have no sharp edges, burrs, projections, orsurfaces that are capable of chafing or abrading the diaphragm.8.2 A pump, in which a flexible diaphragm, bellows, or similar construct

35、ion constitutes the only fluid seal,shall be constructed such that the atmospheric side of the diaphragm or bellows is enclosed in a casingconstruction to reduce external leakage in the event of diaphragm or bellows rupture, or shall haveprovisions for the connection of pipe or tube that will vent t

36、o the outdoors or an area determined to beequivalent.9 Springs9.1 A spring shall be guided and arranged to reduce binding, buckling, or other interference with its freemovement. When required, ends of a spring shall be closed and squared.10 Guards10.1 A gear, belt, pulley, or other rotating part sha

37、ll be enclosed by a metal guard or the pump assemblyshall be furnished with an enclosure.AUGUST 8, 2008 SUBJECT 124 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL11 Piping and Fittings11.1 Pipe threads shall be in accordance with the Standa

38、rd for Pipe Threads, General Purpose (Inch),ANSI/ASME B1.20.1.11.2 Pipe shall be standard full weight (ASTM Schedule 40) wrought iron or steel, or iron pipe size brassor copper pipe. Malleable iron, steel, brass or copper fittings shall be used. A union, when used, shall beof the ground joint type o

39、r a part that has been determined to be equivalent.11.3 A threaded pipe connection shall be made with litharge and glycerine cement, shellac, shellac andinert powder filler, or a gasoline-resistant pipe joint sealing compound.12 Hose and Couplings12.1 When a hose assembly, consisting of a hose and c

40、ouplings, is supplied with the pump assembly, itshall have nonferrous couplings attached and comply with the Standard for Gasoline Hoses, UL 330.PROTECTION AGAINST INJURY TO PERSONS13 General13.1 If the operation and maintenance of a product by the user involves a risk of injury to persons, meanssha

41、ll be provided to reduce the risk.13.2 When judging a product with respect to the requirement in 13.1, consideration shall be given toreasonably foreseeable misuse of the product.13.3 Specific constructions, tests, markings, guards, and the like are detailed for some commonconstructions. Specific fe

42、atures and products not covered herein are to be examined and tested todetermine whether they are acceptable for the purpose.14 Sharp Edges14.1 An enclosure, frame, guard, handle, or the like shall not be sufficiently sharp to constitute a risk ofinjury to persons in normal maintenance and use.Excep

43、tion: This requirement does not apply to a part or portion of a part needed to perform a workingfunction.AUGUST 8, 2008SUBJECT 12410UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULPERFORMANCE15 General15.1 A representative sample of each size

44、and specific design of pump is to be subjected to the testsdescribed in these requirements. Additional samples of parts constructed of nonmetallic materials arerequired for physical and chemical tests.15.2 Water or kerosene is to be used for developing the required pressures in a leakage test of liq

45、uidconfining parts or hydrostatic pressure test. All hydrostatic pressures are to be maintained for at least 1minute, unless otherwise noted.15.3 Endurance tests are to employ kerosene, or the equivalent, as the test medium.16 External Leakage Test16.1 There shall be no indication of leakage before

46、or after the test described in 16.2 and 16.3.16.2 Kerosene shall be used as the test fluid for this test. The outlet of the pump is to be blocked and thepump is to be filled completely with kerosene.16.3 The pump is then gradually pressurized from 0 psi to 50 psi through the inlet and the pump isvis

47、ually inspected for signs of leakage.17 Endurance Test17.1 A hand pump shall be capable of withstanding an endurance test, using kerosene, for the durationshown in Table 17.1. There shall be no evidence of excessive wear on parts and the pump shall complywith the External Leakage Test, Section 16, a

48、fter this test.Table 17.1Endurance test durationsPump type DurationDiaphragm 50,000 cycles or 30,000 gallonsaPiston 12,500 cyclesRotary 12,500 cyclesaWhichever is greaterAUGUST 8, 2008 SUBJECT 124 11UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FRO

49、M UL18 Electrical Continuity Test18.1 If a hose assembly is provided, it shall be subjected to the test in 18.2.18.2 A sample of the hose assembly is to be connected to a section of representative pipe. While at zeropressure, the electrical continuity from the end of the hose assembly to the pipe immediately after thecoupling is to be measured. The hose is to be filled with kerosene and pressurized to 38 psi and themeasurement repeated.18.3 The measured resistance shall not exceed 0.5 megohms.19 Hydrostatic Strength Tes