1、Designation: F3124 15Standard Practice forProduce Heat Butt Fusion Joints in Plastic Piping Systemsor Fittings1This standard is issued under the fixed designation F3124; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of l
2、ast revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice specifies the data recording informationthat is recorded, when data recording equipment is used, onbutt f
3、usion joints in a plastic piping system in order to comparethe procedure used in making the joint to the heat butt fusionjoining procedure specified. This practice is suitable for usewith all heat butt fusion joining procedures that requiremeasurable time and pressure profiles, such as Practice F262
4、0,Specification F2785, Specification F2945 international stan-dards or other qualified procedures. This practice applies tohydraulically operated heat butt fusion machines only and doesnot apply to manually operated fusion machines or specializedfabrication equipment for fittings in a controlled env
5、ironmentwith proprietary procedures and processes.1.2 This standard does not 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 r
6、egulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:F2620 Practice for Heat Fusion Joining of Polyethylene Pipeand FittingsF2785 Specification for Polyamide 12 Gas Pressure Pipe,Tubing, and FittingsF2945 Specification for Polyamide 11 Gas Pressure Pipe,Tubing, and Fittings3.
7、 Terminology3.1 Definitions:3.1.1 Data Recording Device (“Device”)This is an instru-ment that obtains and stores information.3.1.1.1 DiscussionThis is generally an electronic devicethat accepts sensor input for pressure and time and manualinput for other information. These Devices are typically smal
8、l,battery powered, portable, and equipped with amicroprocessor, internal memory for data storage, and connec-tions for pressure sensors to the hydraulic fusion machine.Devices may interface with a personal computer and mayutilize software to activate the Device and to view and analyzethe collected d
9、ata. Other Devices may have a local interfacedevice, such as a keypad or touch sensing, LCD display, andcan be used as a standalone device.4. Summary of Practice4.1 The principle of heat butt fusion of plastic pipe is toapply heat, at a designated temperature, to two prepared pipeends for a heat soa
10、k period and then fuse them together by theapplication of a sufficient force, thereby resulting in fusion.This practice identifies the information that is collected by thedata recording device about the heat butt fusion joint. TheDevice records the hydraulic pressures and times during thebutt fusion
11、 process for individual joints and manual entriessuch as operator identification, product information, fusionparameters, and heater surface temperature.5. Significance and Use5.1 The Device record includes information about how theheat butt fusion joint was made (heater temperature, pressuresand tim
12、es for the heating, fusion and cooling steps) and otherimportant information about the process, job, equipment used,etc. The Device record is compared to the specified heat buttfusion procedure parameters to determine if the procedure wasfollowed correctly. For comparison purposes, a graph of timeve
13、rsus pressure is generated from the data record to showpressure changes that occur during the butt fusion process.Comparing the time versus pressure graph to the steps in theprocedure helps determine that the procedure parameters wereobserved. (See Appendix X1.) These records may be down-loaded from
14、 the device and stored.6. ApparatusGeneral Requirements6.1 Data Recording Device:6.1.1 The Device shall be capable of collecting the follow-ing information:the heater temperature at the beginning of the heat cycle and the pressuresapplied during the heating, fusing and cooling cycletime for each sta
15、ge of the process from the beginning of the heat cyclethrough the end of the cool cycle1This practice is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.20 on Joining.Current edition approved March 1, 2015. Published March 20
16、15. DOI: 10.1520/F312415Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1the operators name or identification number, or boththe job numberjoint numberthe date and timethe equipment manufacturerequipment model and serial number usedthe
17、 heat butt fusion procedure or standard usedthe pipe/fitting manufacturerthe pipe OD and DRpipe material and material designationdrag pressurethe interfacial pressure used (unless already included in the gauge pressuredetermination)plus any notes about the job that would help evaluate the record suc
18、h as:o weather conditions: ambient temperature, wind speedo job set-up issueso use of an enclosure.6.1.2 The Device shall be able to operate accurately underthe ambient conditions for which it is designed.6.1.3 The Device shall be able to output the data for theproduction of a time versus pressure g
19、raph of the fusionprocess. See Appendix X1 for an example of a time versuspressure graph that shows the pressures and times of thedifferent steps in the heat butt fusion process.6.1.4 The Device shall be able to record and store at least24 h of continuous operation of heat butt fusion joint data.6.1
20、.5 The records in the Device shall be downloadable to acomputer or other data storage device. (see Note 1.)NOTE 1The records should not be overwritten prior to downloadingwithout a warning message to the user. Records should be offloaded beforedeleting the records from the Device.6.1.6 Calibration r
21、equirements shall be followed per themanufacturers recommendations.6.1.7 The Device shall be capable of connecting to thehydraulic system of the butt fusion machine in order to recordthe pressures during the fusion cycle.6.1.8 The Device shall calculate and recommend heat buttfusion pressures based
22、on entered/provided pipe size informa-tion and interfacial pressure.6.2 Pressure Transducer:6.2.1 The pressure transducer shall be capable of measuringthe hydraulic pressure used on the hydraulic fusion machineduring the heat butt fusion procedure.6.2.2 The pressure transducer shall be connected to
23、theDevice and to the hydraulic fusion machine for the purpose oftransmitting hydraulic pressure data to the Device.6.3 Temperature Measuring Device:6.3.1 The temperature measuring device shall be capable ofmeasuring the fusion equipments heater plate surface tempera-ture.6.3.2 This temperature measu
24、ring device shall be a surfacemeasuring device, infrared measuring device, or other methodapproved by company or pipe manufacturers procedures, thatis within its calibration period.7. Procedure7.1 Enter the correct date and time in the Device.7.2 Enter the operators identification in the Device.7.3
25、Enter the fusion equipment manufacturer, model andserial number being used on the job in the Device.7.4 Enter the heat butt fusion standard or procedure param-eters into the Device.7.5 Enter the pipe information (manufacturer, pipe materialand material designation, pipe OD and DR) into the Device.7.
26、6 Verify that the pipe ends and OD have been cleaned perthe heat butt fusion standard or procedure being used.7.7 Verify that the pipes have been faced and the faced endsmeet the heat butt fusion standard or procedure being used.7.8 Verify that the pipe OD alignment satisfies the heat buttfusion sta
27、ndard or procedure being used in the Device.7.9 Verify that the heater surfaces were cleaned in accor-dance with the heat butt fusion standard or procedure.7.10 Measure the heater surface temperature with a cali-brated temperature measuring device and enter the heatersurface temperature into the Dev
28、ice.7.11 Measure the fusion machines drag pressure and enterthe drag pressure in the Device.7.12 Verify that the fusion pressure setting on the hydraulicfusion machine agrees with the recommended fusion pressurefrom the Device.7.13 Insert the heater in the fusion machine and start theDevice. Ensure
29、that the pressure-time graph starting point hasbeen established before bringing the pipe ends against theheater. Follow the specified heat butt fusion procedure stepsand fuse the pipe.7.14 Once the cooling cycle is complete, stop recording onthe Device. Compare the output of the device to the specif
30、iedfusion procedure parameters.7.15 Unclamp the fused pipe and visually inspect the jointin accordance with the specified heat butt fusion procedure. Ifthe joint meets the visual inspection requirements and therecorded data agrees with the specified heat butt fusionprocedure parameters, the joint is
31、 acceptable. If not, the jointrecord shall be recorded as unacceptable, the reason for therejection recorded in the notes, and the joint shall be cut out.7.16 The record of the joint in the device shall be automati-cally locked at this point and no changes allowed except to addnotes or pictures, or
32、both, that might help clarify the record.8. Keywords8.1 keywords neededF3124 152APPENDIX(Nonmandatory Information)X1. EXAMPLE DEVICE RECORDX1.1 An example record is shown below. The record shouldinclude a time versus pressure graph from the time the pipeends are brought against the heater plate thro
33、ugh the end of thecooling cycle.Example Record1. Date/Time:2. Joint Number:3. Job Number:4. Employee ID:5. Fusion Machine Manufacturer:6. Fusion Machine Model:7. Fusion Machine Serial Number:8. Pipe Manufacturer:9. Pipe Material/Material Designation:10. Specified Heat Butt Fusion Standard or Procedu
34、re:11. Pipe OD:12. Pipe DR:13. Recommended hydraulic butt fusion machine gauge pressure for thedifferent steps in the heat butt fusion process:Bead-up Pressure:Heat Soak Pressure/Heat Pressure:Fusion/Cooling Pressure/Heat Butt Fusion Pressure:14. Drag Pressure:15. Pipe and pipe ends were cleaned pri
35、or to clamping (yes/no):16. Pipe ends were faced per the specified procedure (yes/no):17. Pipe OD alignment meets the requirement in the specified procedure (yes/no):18. Heater Surface Temperature:19. Heater was cleaned per the specified procedure (yes/no):20. The melt bead size between the pipe end
36、s and the heater met the specifiedprocedure used before removing the heater (yes/no):21. Device Manufacturer and Model:22. Add any notes about the joint, job set-up, enclosure used or weatherconditions that could affect the data recorded.23. Record and Visual Inspection Completed (Acceptable/Unaccep
37、table).X1.2 Operator TrainingX1.2.1 The fusion machine operator should be trained onthe specific fusion machine that is used to make the heat buttfusion joints and also should be trained on the operation of theDevice used.X1.3 Heat Butt Fusion Joint QualityX1.3.1 Devices can provide a reliable metho
38、d for collectingand recording the parameters of the heat butt fusion processused to make heat butt fusion joints. This data can be comparedto the Specified Standard or Company/Pipe ManufacturerProcedure, or both, to see if the proper parameters werefollowed. Be aware that this device cant show all a
39、spects ofthe heat butt fusion conditions such as wind, cold weather,blowing dust and sand, etc. Because of this, it is suggested that,periodical joint testing should occur with an appropriate test(bend, tensile, etc.) to assure joint integrity.X1.4 Marking of the PipeX1.4.1 So that joints may be ide
40、ntified at a later time, thejoint should be permanently marked.This graph will vary depending on the butt fusion procedure or material used. This is an example of a PE fusion graph per Practice F2620.FIG. X1.1 Example Time versus Pressure Graph of the Fusion JointF3124 153ASTM International takes no
41、 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 rights, are entirely their own respons
42、ibility.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 additional standardsand should be addressed t
43、o ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the add
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