1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJULY 13, 20181UL 1356Outline of Investigation for Pipe Joint Sealing CompoundsIssue Number: 5July 13, 2018Summary of TopicsThis fifth issue of the Outline of Investigation for Pipe Joint SealingC
2、ompounds, UL 1356, which covers sealing compound products suppliedin liquid, semiliquid, or heavy paste (stick) form, where the product isintended to make threaded metal pipe joints tight against leakage, is beingissued to add Supplement SA and Supplement SB to address test fluids.ULs Outlines of In
3、vestigation are copyrighted by UL LLC. Neither a printed norelectronic copy of an Outline of Investigation should be altered in any way. All ofULs Outlines of Investigation and all copyrights, ownerships, and rights regardingthose Outlines of Investigation shall remain the sole and exclusive propert
4、y of ULLLC.COPYRIGHT 2018 UL LLCUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJULY 13, 2018UL 13562No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCT
5、ION1 Scope .42 General 43 Units of Measurement .44 Undated References 5PERFORMANCE5 General 56 Assembly Construction and Initial Pressure Testing .56.1 Test assemblies 56.2 Construction of assemblies 56.3 Tests for liquid fuel applications 86.4 Test for butane and propane applications 96.5 Test for
6、300 psig (2070 kPa) natural gas applications 107 Sprinkler System and Water Spray System Tests RESERVED 108 Electrical Resistance at Joints .109 Corrosion Tests 11IDENTIFICATION TESTS10 General 11MARKING11 General 11SUPPLEMENT SA E25A AND E85A TEST FLUIDSSA1 Details .SA1SUPPLEMENT SB B20 and B99.9/B
7、100 Test FluidsSB1 Details .SB1JULY 13, 2018 UL 1356 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements are for use in the investigation of sealing compound products supplied in liquid,semiliquid, or hea
8、vy paste (stick) form, where the product is intended to make threaded metal pipe jointstight against leakage. These products are evaluated when applied in accordance with the manufacturersinstructions, to male threads of metal pipe assemblies. The products are rated for use in equipmentintended to h
9、andle gasoline, gasoline/ethanol blends, diesel fuel, biodiesel/diesel fuel, biodiesel, naphtha,benzene, kerosene, petroleum oils, natural gas, propane, or butane as specified by the manufacturer.1.2 The investigation includes tests for the sealing effectiveness of the product, and tests to determin
10、ethat the product does not cause significant corrosion of common metals or adversely affect the electricalcontinuity of pipe assemblies on which it is used. The investigation also includes analytical tests requiredfor product identification purposes.1.3 This outline of investigation does not cover t
11、he classification of the product in regard to itsflammability, the toxicity of the product or its vapors due to flammability or the effect of normal atmosphericconditions on the product while in storage or in use.1.4 If requested, the sealing of threaded joints in pipe sizes larger than 2 inches may
12、 be investigatedusing appropriate adaptation of tests described in Section68.Tests for uses other than those indicatedare not within the scope of these requirements.2 General2.1 Product application instructions deemed to be adequate for its proper use shall be provided by themanufacturer. The manufa
13、cturer shall also provide product composition information in sufficient detail topermit development of an appropriate analytical test program for product identification.3 Units of Measurement3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximat
14、e information.JULY 13, 2018UL 13564UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4 Undated References4.1 Any undated reference to a code or standard appearing in the requirements of this outline ofinvestigation shall be interpreted as referr
15、ing to the latest edition of that code or standard.PERFORMANCE5 General5.1 Sealed pipe assemblies required for the following tests shall be made using product applied inaccordance with the manufacturers printed instructions.6 Assembly Construction and Initial Pressure Testing6.1 Test assemblies6.1.1
16、 Pipe assemblies are to be constructed in accordance with 6.1.2 6.1.4, from commercial gradeSchedule 40, minimum, malleable iron pipe and fittings (ANSI B16.3).6.1.2 The fittings used are to be threaded with tapered pipe threads cut in accordance with ASMEB1.20.1 NPT tapered pipe thread.6.1.3 The ma
17、ting male and female thread patterns are to be checked for evidence of damage to threadsand with regard to tolerance with ring and plug gauges manufactured in accordance with ASME B1.20.1.Only pipe and fittings that show no significant evidence of thread damage and that comply with ASMEB1.20.1 toler
18、ances shall be used to construct assemblies.6.1.4 Prior to assembly, thread patterns are to be cleaned thoroughly with a suitable degreasing solventto the extent that all traces of oil, grease, dirt, or rust are removed. Then the assembly shall be allowedto air dry at room temperature.6.2 Constructi
19、on of assemblies6.2.1 The test assemblies are to be constructed for each end-use application using one tee of the largestpipe size required for testing, a reducing bushing, pipe nipple, bell reducer to -inch pipe size, -inch pipenipple, -inch tee and -inch pipe nipple, with all open fittings closed
20、with a plug as illustrated in Figure6.1.This is generated text for figtxt.JULY 13, 2018 UL 1356 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULFigure 6.1Pipe assembly diagramJULY 13, 2018UL 13566UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FUR
21、THER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL6.2.2 For an assembly intended to be used for evaluation of the product for 300 psig (2070 kPa) naturalgas applications, the -inch plug in the -inch tee shall be replaced with a -inch nipple approximately8 inches long.6.2.3 The product under
22、 test is to be applied to the male threads of the joints in accordance with themanufacturers instructions.6.2.4 The assembly joints are to be tightened to the torque specified in Table 6.1.Table 6.1Torque requirements for pipe thread (NPT) connectionsNominal pipe size,aTorque,inches pounds-inches /
23、foot-pounds (Nm)1/8 150 /12.5 (16.9)1/4 250 / 21 (28.3)3/8 450 / 38 (51.9)1/2 800 / 67 (90.4)3/4 1000 / 83 (113.0)1 1200 / 100 (135.5)1-1/4 1450 / 121 (163.8)1-1/2 1550 / 129 (175.1)2 1650 / 138 (186.4)aANSI/ASME B1.20.16.2.5 After standing at room temperature for at least 24 hours or the minimum se
24、t up time specified bythe manufacturer, if less than 24 hours, each assembly shall be checked to verify an initial seal bypressurizing the assembly for 5 minutes with air in a room temperature water bath to 300 psig (2070 kPa)or the maximum pressure to which it will be subjected when charged with th
25、e test medium, whichever isgreater. If leakage is noted that cannot be stopped by retightening to the torque specified above, or if theproduct is of such a composition that joints cannot be retightened after the product has cured, the jointshall be disassembled and inspected. If defects in the threa
26、ds, pipe or fittings are evident, the test shallbe considered invalid and shall be repeated with an assembly constructed of new pipe and fittings. If nodefects in the threads are noted and it is possible to remove the product from the joint threads, the productshall be removed from both male and fem
27、ale threads and the joint shall be reassembled with a newapplication of product in accordance with the manufacturers instructions and the prescribed torque. If it isnot possible to remove the product from the leaking joint, a new assembly shall be constructed. If it isagain not possible to obtain an
28、 initial seal, further testing shall be discontinued.JULY 13, 2018 UL 1356 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL6.3 Tests for liquid fuel applications6.3.1 A pipe assembly constructed and initially tested as described in 6.1.1 6.2.
29、5 shall not lose morethan 45 milliliters of fuel when tested as described in 6.3.2 6.3.5 and then shall withstand a pressure of300 psig (2070 kPa) for 15 minutes without showing visible evidence of leakage as described in 6.3.6.6.3.2 For gasoline and gasoline/ethanol blend applications up to 10 perc
30、ent ethanol, the assembly is tobe filled to a predetermined level approximately 1 inch (25.4 mm) from the top of the assembly with ameasured amount of ASTM Reference Fuel H and connected in the vertical position to a header. Theassembly shall be maintained in the vertical position throughout the tes
31、t period. The header is to beprovided with an air-pressure gauge and connected through pressure reducers to a compressed air line.The pressure reducer is to be adjusted to supply a pressure of 30 psig (210 kPa) to the header and pipeassembly.6.3.3 If leakage is observed at any of the joints within 2
32、4 hours and the product is the type that can beretightened, the assembly shall be disconnected from the header, emptied of fuel, and the leaking jointsretightened to the prescribed torque with care taken not to disturb the remaining joints. The retightenedassembly shall then be refilled with test fu
33、el, connected to the header, and the pressure reapplied. Ifleakage is not stopped with this further tightening, or if the product is of such a composition that jointsshould not be retightened after the product has cured, unacceptable performance shall be recorded andtesting shall be discontinued.6.3
34、.4 If no initial leakage is observed during the 24-hour period following sealing or re-sealing, thepressure is to be maintained at 30 psig (210 kPa) for a total of 90 days, during which time periodicobservations are to be made for evidence of leakage.6.3.5 At the end of the 90-day period, the assemb
35、ly is to be carefully depressurized to prevent suddenoutgassing of air and loss of fuel, after which it shall be removed from the header and the amount of fuelneeded to restore the original level shall be measured.6.3.6 The assembly shall then be emptied of fuel, filled with water and subjected to a
36、 pressure of 300 psig(2070 kPa) for 15 minutes during which time it shall be observed for leakage.6.3.7 Acceptable test performance with respect to testing with ASTM Reference Fuel H is considered tocover also the suitability of the product for use with naphtha, benzene, kerosene, and petroleum oils
37、.6.3.8 For E25 applications (ethanol/gasoline blends from 0 to 25 percent ethanol), the product shall beevaluated in accordance with 6.3.1 6.3.6 using the E25a test fluid in place of ASTM Reference Fuel H.For E85 applications (ethanol/gasoline blends from 0 to 85 percent ethanol), the product shall
38、beevaluated in accordance with 6.3.1 6.3.6 in two separate assemblies, one filled with E25a test fluid andthe other filled with E85a test fluid in place of ASTM Reference Fuel H. The formulation of these test fluidsis described in E25a and E85a Test Fluids, Supplement SA. To establish an E85 rating,
39、 the product shallcomply with the maximum fuel loss requirement with both test fluids. Acceptable test performance withrespect to testing with E25a test fluid is considered to cover also the suitability of the product for use withgasoline, naphtha, benzene, kerosene, and petroleum oils.JULY 13, 2018
40、UL 13568UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL6.3.9 For B20 applications (biodiesel/diesel fuel blends from 0 to 20 percent biodiesel), the product shallbe evaluated in accordance with 6.3.1 6.3.6 using FB25a test fluid in place of A
41、STM Reference Fuel H.For B99.9 - B100 applications (biodiesel), the product shall be evaluated in accordance with 6.3.1 6.3.6using B100a test fluid in place of ASTM Reference Fuel H. The formulation of these test fluids is describedin B20 and B99.9/B100 Test Fluids, Supplement SB. Acceptable test pe
42、rformance with respect to testingwith FB25a is considered also to cover the suitability of the product for use with diesel fuel.6.4 Test for butane and propane applications6.4.1 Pipe assemblies constructed and initially tested as described in 6.1.1 6.2.5 shall not lose morethan 12.6 g of butane or 1
43、1.1 g of propane after 42 days when tested as described in 6.4.2 6.4.5.Acceptable test performance with propane is considered also to cover the suitability of this product for usewith natural gas at a pressure not exceeding 100 psig (690 kPa).6.4.2 The sealed assembly shall be cooled in a cold chamb
44、er to a temperature of minus 30 to minus 40C(minus 22 to minus 40F) and then filled to about 3/4 capacity with liquefied propane or butane, asrequested by the manufacturer. The assembly shall be sealed with the product using a -inch cap.6.4.3 After being filled and closed, the assembly shall be allo
45、wed to stand at room temperature for 4hours or for the minimum time required for the product to cure as specified by the manufacturer, and thenimmersed in water at room temperature. If leakage is observed at any of the joints within 24 hours, theleaking joints are to be re-tightened, to the prescrib
46、ed torque, with care taken not to disturb the otherjoints. If the product is of such a composition that joints should not be retightened after the product hascured, the test shall be continued regardless of whether a seal was achieved.6.4.4 The assembly shall be blotted dry with a towel and allowed
47、to stand at room temperature until aconstant weight is achieved but not more than 4 hours, and then weighed and placed for 28 days in awell-ventilated room maintained at a temperature of 23.0 2C (73.4 3.6F). This temperaturecorresponds to a pressure of 116 psig (800 kPa) for propane and 19 psig (131
48、 kPa) for butane. Theassembly shall be weighed at the end of this period, or prior to it if significant leakage is noted. If propaneor butane loss exceeds two-thirds of the total amount permitted to be lost as specified in 6.4.1,unacceptable performance shall be recorded and the tests shall be disco
49、ntinued.6.4.5 If after 28 days the assembly weight loss is within acceptable limits, the assembly shall be placedin a chamber maintained at a temperature of 48.9 2C (120 3.6F) for 14 days. This temperaturecorresponds to a pressure of 225 psig (1552 kPa) for propane and 56 psig (386 kPa) for butane. At theend of this time or prior to it if significant leakage is noted, the assembly shall be weighed to determinethe loss of propane or butane. If at any point the total propane or butane loss exceeds that specified in6.4.1, the test
