1、Designation: F3124 151Standard Practice forData Recording the Procedure used to Produce Heat ButtFusion Joints in Plastic Piping Systems or Fittings1This standard is issued under the fixed designation F3124; the number immediately following the designation indicates the year oforiginal adoption or,
2、in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1NOTEThe title was editorially corrected and keywords were added in March 2015.1. Scope1.1 Th
3、is practice specifies the data recording informationthat is recorded, when data recording equipment is used, onbutt fusion 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 use
4、with all heat butt fusion joining procedures that requiremeasurable time and pressure profiles, such as Practice F2620,Specification F2785, Specification F2945 international stan-dards or other qualified procedures. This practice applies tohydraulically operated heat butt fusion machines only and do
5、esnot apply to manually operated fusion machines or specializedfabrication equipment for fittings in a controlled environmentwith 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
6、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 Standards:F2620 Practice for Heat Fusion Joining of Polyethylene Pipeand FittingsF2785 Specification for Polyamide 1
7、2 Gas Pressure Pipe,Tubing, and FittingsF2945 Specification for Polyamide 11 Gas Pressure Pipe,Tubing, and Fittings3. 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 deviceth
8、at accepts sensor input for pressure and time and manualinput for other information. These Devices are typically small,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 int
9、erface with a personal computer and mayutilize software to activate the Device and to view and analyzethe collected data. 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 h
10、eat butt fusion of plastic pipe is toapply heat, at a designated temperature, to two prepared pipeends for a heat soak 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 recordi
11、ng device about the heat butt fusion joint. TheDevice records the hydraulic pressures and times during thebutt fusion process for individual joints and manual entriessuch as operator identification, product information, fusionparameters, and heater surface temperature.5. Significance and Use5.1 The
12、Device record includes information about how theheat butt fusion joint was made (heater temperature, pressuresand times 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
13、 procedure parameters to determine if the procedure wasfollowed correctly. For comparison purposes, a graph of timeversus 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
14、 helps determine that the procedure parameters wereobserved. (See Appendix X1.) These records may be down-loaded from 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:1This practice is under the
15、 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 2015. DOI: 10.1520/F312415E01.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, P
16、A 19428-2959. United States1the heater temperature at the beginning of the heat cycle and the pressuresapplied during the heating, fusing and cooling cycletime for each stage of the process from the beginning of the heat cyclethrough the end of the cool cyclethe operators name or identification numb
17、er, or boththe job numberjoint numberthe date and timethe equipment manufacturerequipment model and serial number usedthe heat butt fusion procedure or standard usedthe pipe/fitting manufacturerthe pipe OD and DRpipe material and material designationdrag pressurethe interfacial pressure used (unless
18、 already included in the gauge pressuredetermination)plus any notes about the job that would help evaluate the record such 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
19、 for which it is designed.6.1.3 The Device shall be able to output the data for theproduction of a time versus pressure graph 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
20、.1.4 The Device shall be able to record and store at least24 h of continuous operation of heat butt fusion joint data.6.1.5 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
21、a warning message to the user. Records should be offloaded beforedeleting the records from the Device.6.1.6 Calibration requirements 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 re
22、cordthe pressures during the fusion cycle.6.1.8 The Device shall calculate and recommend heat buttfusion pressures based 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
23、on the hydraulic fusion machineduring the heat butt fusion procedure.6.2.2 The pressure transducer shall be connected to 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
24、 device shall be capable ofmeasuring the fusion equipments heater plate surface tempera-ture.6.3.2 This temperature measuring device shall be a surfacemeasuring device, infrared measuring device, or other methodapproved by company or pipe manufacturers procedures, thatis within its calibration perio
25、d.7. Procedure7.1 Enter the correct date and time in the Device.7.2 Enter the operators identification in the Device.7.3 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 Devic
26、e.7.5 Enter the pipe information (manufacturer, pipe materialand material designation, pipe OD and DR) into the Device.7.6 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
27、heat butt fusion standard or procedure being used.7.8 Verify that the pipe OD alignment satisfies the heat buttfusion standard 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
28、 surface temperature with a cali-brated temperature measuring device and enter the heatersurface temperature into the Device.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
29、 the recommended fusion pressurefrom the Device.7.13 Insert the heater in the fusion machine and start theDevice. Ensure 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
30、pipe.7.14 Once the cooling cycle is complete, stop recording onthe Device. Compare the output of the device to the specifiedfusion 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
31、inspection requirements and therecorded data agrees with the specified heat butt fusionprocedure parameters, the joint is 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 jo
32、int in the device shall be automati-cally locked at this point and no changes allowed except to addnotes or pictures, or both, that might help clarify the record.8. Keywords8.1 butt fusion; data recording; data recording device; heatfusion; time versus pressure graphF3124 1512APPENDIX(Nonmandatory I
33、nformation)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 through the end of thecooling cycle.Example Record1. Date/Time:2. Joint Number:3. Job Number:4. Employee ID
34、: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 Procedure:11. Pipe OD:12. Pipe DR:13. Recommended hydraulic butt fusion machine gauge pressure for thedifferen
35、t 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 prior to clamping (yes/no):16. Pipe ends were faced per the specified procedure (yes/no):17. Pipe OD align
36、ment 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 ends and the heater met the specifiedprocedure used before removing the heater (yes/no):21. Device Manufac
37、turer 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/Unacceptable).X1.2 Operator TrainingX1.2.1 The fusion machine operator should be trained onthe specific fusion
38、 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 method for collectingand recording the parameters of the heat butt fusion processused to make heat butt fusi
39、on 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 aspects ofthe heat butt fusion conditions such as wind, cold weather,blowing dust and sand, etc. Because
40、 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 identified at a later time, thejoint should be permanently marked.This graph will vary depending on the bu
41、tt 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 1513ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedi
42、n 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 responsibility.This standard is subject to revision at any time by the responsible technical committee and mu
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44、eresponsible 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 address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C70
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