1、Designation: F 1365 91 (Reapproved 2005)An American National StandardStandard Test Method forWater Infiltration Resistance of Plastic UndergroundConduit Joints Which Use Flexible Elastomeric Seals1This standard is issued under the fixed designation F 1365; the number immediately following the design
2、ation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the det
3、ermination of the waterinfiltration resistance of gasketed plastic underground conduitjoints using a pressurized water bladder apparatus.1.2 The values stated in inch-pound units are to be regardedas the standard. The SI values in parentheses are provided forinformation only.1.3 This standard does n
4、ot 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 practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standar
5、ds:2D 618 Practice for Conditioning Plastics and ElectricalInsulating Materials for TestingD 2122 Method for Determining Dimensions of Thermo-plastic Pipe and FittingsF 512 Specification for Smooth-Wall Poly(Vinyl Chloride)(PVC) Conduit and Fittings for Underground Installation2.2 Underwriters Labor
6、atories (UL) Standard:UL 651 Schedule 40 and 80 Rigid PVC Conduit32.3 National Electrical Manufacturers Association (NEMA)Standards:TC-2 Electrical Plastic Tubing (EPT) and Conduit (EPC-40and EPC-80)4TC-6 PVC and ABS Plastic Utilities Duct for UndergroundInstallation4TC-8 Extra-Strength PVC Plastic
7、Utilities Duct for Under-ground Installation43. Significance and Use3.1 Underground electrical and communication conduitshould be impervious to groundwater in order to preventdamage to conductors and utility vaults. The bladder testdescribed in this test method may be used to qualify potentialgasket
8、ed conduit systems by indicating whether the jointsystem will prevent water infiltration.3.2 This test method can be used to qualify joints for plasticunderground conduits using flexible elastomeric seals. How-ever, it should not be assumed that a joint system that passesthis test method will be abl
9、e to seal under cases of misinstal-lation or abuse, or both.3.3 This test method covers all of the following gasketedconduit types: encased burial (EB) excluding EB20, directburial (DB), telecommunications, cable television, and Sched-ule 40 conduit and Schedule 80 conduit. Trade sizes coveredare 2-
10、in. nominal size and larger. (See UL 651; NEMA TC-2,TC-6, and TC 8; and Specification F 512.)3.4 This test method also covers fittings that are intended foruse with the conduit types described in 3.3 and which useflexible elastomeric seals.4. Apparatus4.1 GeneralOne type of bladder joint tester is s
11、hown inFig. 1.4.2 Bladder:4.2.1 The bladder shall be similar to that shown in Fig. 1.The bladder shall be comprised of a reinforced elastomerictube that is capable of providing a watertight capsule aroundthe subject joint specimen.4.2.2 The bladder shall be able to safely contain an internalwater pr
12、essure of at least 11.0 psi (75 kPa).4.2.3 The bladder shall have plumbing connections thatallow the bladder to be pressurized with water and that allowtrapped air to be bled out of the bladder.4.2.4 The bladder shall have a pressure gage that indicatespressure in the bladder. This gage shall be cap
13、able of measur-ing 11 psi (75 kPa) (gage) with an accuracy of 60.5 psi (63.5kPa) (gage).1This test method is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.40 on TestMethods.Current edition approved May 1, 2005. Published Ma
14、y 2005. Originallyapproved in 1991. Last previous edition approved in 1999 as F1365 91(1999)e12For 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
15、 Summary page onthe ASTM website.3Available from Underwriters Laboratories (UL), 333 Pfingsten Rd., North-brook, IL 60062.4National Electrical Manufacturers Association (NEMA), 1300 North 17thStreet, Rosslyn, VA 22209.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohock
16、en, PA 19428-2959, United States.4.3 Support Fixture:4.3.1 The support fixture shall constrain movement of thetest specimen and bladder during testing.4.3.2 The support fixture shall be capable of axially deflect-ing the joint specimen about the joint to the maximumdeflection angle recommended by th
17、e joint manufacturer.NOTE 1Axial deflection of a gasketed pipe joint will also inducediametric deformation of the bell and spigot if the angle of axial deflectionis large enough. This can be beneficial when evaluating the sealing abilityof a gasketed pipe joint.5. Test Specimens5.1 The gasketed join
18、t specimen shall be comprised of agasketed bell and a spigot with a chamfer on the outsidediameter edge. Both the bell and spigot shall be of sufficientlength to extend out beyond the bladder enough to provide ameans by which to attach the specimen/bladder assembly to thesupport fixture.5.2 Bell spe
19、cifications and spigot chamfer specificationsshall be determined by the manufacturer, but the specimensshall be representative of normal and customary production bythe manufacturer. (See Method D 2122.)5.3 Three specimens shall be tested for each size of gas-keted conduit.6. Conditioning6.1 Conditio
20、n specimens for at least2hinairatatemperature of 73.4 6 3.6F (23 6 2C) and conduct the testin a room maintained at the same temperature. (See PracticeD 618.)7. Procedure7.1 Select and condition three sets of gasketed bells andspigots of the same nominal size according to Sections 5 and 6of this test
21、 method.7.2 Mark the specimens with consecutive numbers, startingwith “1” and ending with “3.”7.3 Select a bell/spigot pair and apply a joint lubricantrecommended by the conduit manufacturer to both the bell andspigot according to the lubricant manufacturers directions.7.4 Insert the spigot into the
22、 bell until the insertion line onthe spigot is flush with the bell lip.7.5 Slide the bladder over the assembled conduit joint andcenter the bladder over the joint seam. Seal the ends of thebladder to the spigot and bell.NOTE 2The type of clamps used to seal the bladder to the specimenand the locatio
23、n of the clamps on the specimen may influence the amountof bell and spigot deformation when the joint is deflected axially.7.6 Attach all plumbing in accordance with 4.2.3 and 4.2.4to the bladder assembly.7.7 Attach the bladder/specimen assembly to the test fixturein a horizontal, axially straight p
24、osition.7.8 Fill the bladder with water and bleed off trapped air. Donot allow the bladder to pressurize past 5 psi (34 kPa) duringthe filling and air bleeding of the bladder.7.9 After all air is bled from the bladder, pressurize thebladder to 11 psi (75 kPa) and allow the bladder pressure tostabili
25、ze for 5 min.7.10 After the stabilization period, make the necessaryadjustments to the bladder pressure to return it to 11.0 6 0.5psi (75 6 3.5 kPa).7.11 Check for water leakage inside specimen. Leakage atthis point constitutes failure of the test.7.12 Visually check for leakage of the joint at 5, 1
26、0, and15-min intervals. If leakage is detected at any interval, discon-tinue the test. Any leakage constitutes a failure of the test.7.13 If no leakage has occurred to this point, repeat 7.12after axially misaligning the same joint to the maximumamount allowed by the joint manufacturer.7.14 Any leak
27、age during any part of the test constitutesfailure of the test and the test may be suspended at that point.7.15 Repeat 7.3 through 7.14 for the remaining joints.7.16 If other sizes of conduit are to be tested, repeat 7.1through 7.15.8. Report8.1 Each test of a nominal size of conduit (three specimen
28、s)shall generate a test report.8.2 The test report shall include the following:8.2.1 Identification of the bell and spigot specimens used inthe test, including nominal size, type of conduit, material ofmanufacture, type and source of gasket, and the name of thejoint manufacturer.8.2.2 Whether the jo
29、int passed or failed the test. If the jointfailed, state at what point in the test failure occurred.8.2.3 Date(s) of testing.8.2.4 Location of testing.8.2.5 Name(s) of personnel conducting test.8.2.6 Comments, if appropriate.FIG. 1 Bladder Test ApparatusF 1365 91 (2005)29. Precision and Bias9.1 No s
30、tatement is made about either the precision or biasof this test method for determining water infiltration resistancesince the result merely states whether there is conformance tothe criteria for success specified in the procedure.10. Keywords10.1 bladder; gasketed conduit; underground conduit; water
31、infiltrationASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such
32、 rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additi
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34、ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).F 1365 91 (2005)3
