ASTM F3080-17a Standard Practice for Laser Technologies for Measurement of Cross-Sectional Shape of Pipeline and Conduit by Non-Rotating Laser Projector and CCTV Camera System.pdf

1、Designation: F3080 17aStandard Practice forLaser Technologies for Measurement of Cross-SectionalShape of Pipeline and Conduit by Non-Rotating LaserProjector and CCTV Camera System1This standard is issued under the fixed designation F3080; the number immediately following the designation indicates th

2、e 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 () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 Laser profiling is a non-contact inspection metho

3、d usedto create a pipe wall profile and internal measurement using astandard CCTV pipe inspection system, 360 degree laser lightprojector, and special geometrical profiling software. Thispractice covers the procedure for the measurement to deter-mine any deviation of the internal surface of installe

4、d pipecompared to the design. The measurements may be used toverify that the installation has met design requirements foracceptance or to collect data that will facilitate an assessmentof the condition of pipe or conduit due to structural deviationsor deterioration. This standard practice provides m

5、inimumrequirements on means and methods for laser profiling to meetthe needs of engineers, contractors, owners, regulatoryagencies, and financing institutions.1.2 This practice applies to all types of pipe material, alltypes of construction, and pipe shapes.1.3 This practice applies to depressurized

6、 and gravity flowstorm sewers, drains, sanitary sewers, and combined sewerswith diameters from 6 to 72 in. (150 and 1800 mm).1.4 This standard does not include all aspects of pipeinspection, such as joint gaps, soil/water infiltration in joints,cracks, holes, surface damage, repairs, corrosion, and

7、structuralproblems associated with these conditions.1.5 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.6 The profiling process may req

8、uire physical access tolines, entry manholes, and operations along roadways that mayinclude safety hazards.1.7 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,

9、health, and environmental practices and deter-mine the applicability of regulatory limitations prior to use.There are no safety hazards specifically, however, associatedwith the use of the laser ring profiler specified (listed andlabeled as specified in 1.3).1.8 This international standard was devel

10、oped in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Docu

11、ments2.1 ASTM Standards:2E177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodF1216 Practice for Rehabilitation of Existing Pipelines andConduits by the Inversion and Curing of a Resin

12、-Impregnated Tube2.2 Other Standards:IEC 60825-1 Safety of Laser Products Part 1: EquipmentClassification and Requirements, Jan 2011.3CDRH Regulations CFR 21, Section I, Subchapter J, Parts1002 to 1040.1141This practice is under the jurisdiction of ASTM Committee F36 on Technologyand Underground Uti

13、lities and is the direct responsibility of Subcommittee F36.20on Inspection and Renewal of Water and Wastewater Infrastructure.Current edition approved Dec. 1, 2017. Published December 2017. Originallyapproved in 2014. Last previous edition approved in 2017 as F3080-17. DOI:10.1520/F3080-17A.2For re

14、ferenced 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 Summary page onthe ASTM website.3Available from International Electrotechnical Commission (IEC), 3,

15、rue deVaremb, 1st Floor, P.O. Box 131, CH-1211 Geneva 20, Switzerland, http:/www.iec.ch.4Available from Center for Devices and Radiological Health (CDRH), Food andDrug Administration, 10903 New Hampshire Avenue, WO66-4621, Silver Spring,MD 20993, http:/www.fda.gov.*A Summary of Changes section appea

16、rs at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principl

17、es for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.13. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 authority, nparty responsible for the generation andverification of

18、performance to job specification(s) and contractrequirements.3.1.2 barrel distortiondistortion of an image produced byan optical system that causes straight lines at image margins tobulge outwards.3.1.3 barrel distortion correction confirmation targetanX-Y axis grid patterned for the post processing

19、 verification of“fisheye distortion” lens correction within the processingsoftware.3.1.4 CCTV, na closed circuit pipeline and conduit inspec-tion television system including an NTSC or PAL camera,camera transporter, integrated lighting, central control system,video monitor and recording device.3.1.5

20、 CCTV camera transporterthe device that providesmobility for the CCTV camera to move transverse to the pipealignment once it enters the inside of the pipe throughmanholes and/or other line access openings.3.1.6 CCTV pipeline and conduit inspection systemCCTVinspection system is composed of CCTV came

21、ra, transporter,controller and video recording unit.3.1.7 laser, na solid state device that produces a mono-chromatic and coherent beam of visible light in an intense,narrow 360 degree beam.3.1.8 laser profilethe spatial intensity profile of a laserbeam at a particular plane that is perpendicular to

22、 the trajectoryof the laser device along the axis of the pipe.3.1.9 laser profiling surveya survey composed of takingmeasurements of the cross sectional shape of the pipe at a rategreater than 24 images per second along its alignment, pro-cessing the recorded data using compatible software andproduc

23、ing a condition assessment report, including deviation,using laser profiling technology.3.1.10 laser projector assemblya 360 degree laser lightprojector assembly composed of two primary components:laser signal modulation unit.3.1.11 non-rotating laser projector, na mobile, certified“eye safe” laser

24、light source and internal optics capable ofprojecting a 360 degree narrow beam of laser light onto aninternal pipe wall in pipes from 6 to 72 in. (150 to 1800 mm)in diameter regardless of material, design, or shape.3.1.12 ovality, npercentage of shape deflection in circularand noncircular pipes as c

25、alculated per Practice F1216 asdefined in Annex A1.3.1.13 PALPhase Alternating LineA color encodingsystem for analog television not used in North Americacontaining 25 half frames, 50 frames per second. Each framecontains 625 lines.3.1.14 profiling softwarethe software that analyzes thecollected data

26、 from a laser profiling survey into cross sectionalprofiles along the pipe of conduit alignment.3.1.15 survey calibratora calibrated measurement refer-ence placed and recorded on the same plane and distance fromthe CCTV camera as the projected laser light ring during theprofiling survey.4. Significa

27、nce and Use4.1 Laser profiling assessment is a quality control tool foridentifying and quantifying deformation, physical damage, andother pipe anomalies after installation, providing means andmethods for determining the quality of workmanship andcompliance with project specifications. Laser profilin

28、g can beused for:4.1.1 Measurement of the structural shape, cross sectionalarea and defects;4.1.2 Collection of data needed for pipe rehabilitation orreplacement design; and4.1.3 Post rehabilitation, replacement or new constructionworkmanship verification.4.2 A laser profile pre-acceptance and condi

29、tion assessmentsurvey provides significant information in a clear and concisemanner, including but not limited to graphs and still framedigital images of pipe condition prior to acceptance, therebyproviding objective data on the installed quality and percentageovality, deformation, deflection or dev

30、iation, that is often notpossible from an inspection by either a mandrel or CCTV onlysurvey.5. Contract Responsibilities5.1 Apart from the provisions generally included in a testingand certification contract, the laser profiling survey contractshall define and assign responsibilities for the followi

31、ng items:5.1.1 Access to the survey site to be provided to the extentthat the contracting authority can provide such access.5.1.2 The utility owner shall ensure that all lines to beprofiled and free of debris, obstructions and cleaned within 24h prior to the profiling inspection and survey. If the p

32、ipecondition is the cause for unacceptable results then the rein-spection shall be borne by the client of the inspection provider.Standing or flowing water or debris shall not exceed 10 % ofthe nominal pipe diameter, or 6 in. in depth, whichever is thelesser.6. Equipment6.1 The laser profiling equip

33、ment, including laser projectorand CCTV inspection system (Fig. 1), shall be configured asper the manufacturers technical specifications and the speci-fications of the equipment “Certificate of Accuracy,” as re-quired under Section 9.6.2 Only calibration and lens distortion barrel correctionsoftware

34、 algorithms, as specified by the software manufacturer,shall be used per the specifications of the equipment “Certifi-cate of Accuracy.”6.3 The inspection and survey CCTV camera system “Im-age Barrel Distortion” shall be corrected by the software andrecorded within the processing software for post i

35、nspectionverification, and as per the specifications of the equipment“Certificate of Accuracy.”F3080 17a26.4 The survey software used shall be the currently sup-ported version as provided by the software manufacturer.6.5 The processing computer shall be equal to or exceedthose as specified by the so

36、ftware manufacturer.7. Software7.1 The recorded pipeline and conduit survey video shall beloaded onto a computer with CCTV pipeline, conduit inspec-tion profiling processing software, meeting the technical re-quirements as stated herein installed.7.2 The applicable camera “barrel distortion” correct

37、ionshall be selected and verified based on the actual CCTV cameraand lens as used in recording the laser imaging data.7.3 Horizontal and vertical calibration shall be performed asstipulated by the manufacturer of the software.7.4 The profile software shall have the capability to analyzethe laser ima

38、ge of each recorded video frame. The image centershall be calculated by the processing software for each re-corded video frame. A minimum of 1080 radius data pointsshall be interrogated per video frame. The distance from eachusable data point shall be automatically calculated and stored.Using the st

39、ored measurement data, the pipeline and conduitmedian diameter shall be calculated and established as thediameter for calculating percentage deviation from line ovality(deformation). Data points affected or impaired by water,debris, fog, etc., shall be discarded and not used in thecalculation of lin

40、e ovality and deformation.7.5 The ovality shall be calculated per Practice F1216 asgiven in Annex A1 for all pipe shapes. If the shape of theoriginal pipe deviates significantly (more than 10 % from thenominal diameter) from that of an equivalent circle when theflow area is masked, changes in curvat

41、ure shall be consideredas a better measure of the degree of pipe deformation.7.6 For non circular designed pipes, the deviation of theobserved inspection from the original pipe design shall becalculated per the software manufacturers shape algorithm.8. Procedure8.1 The pipe shall be precleaned and f

42、ree of debris thatwould prevent the CCTV camera and laser projector assembly,shown in Fig. 1, from moving through the pipe, or adverselyaffect the accuracy of the survey. Flow or debris, within theline, shall be less than 10 % of the nominal pipe diameter or6 in. in depth, whichever is the lesser.8.

43、2 ACCTV pipeline and conduit inspection system shall beplaced into the pipeline and conduit to be surveyed.Arecordedinspection header shall contain complete pipe data includingmap location, pipe type, pipe size, and date of inspection. TheCCTV distance counter shall be set to zero and displayed in t

44、hevideo without overlapping or distorting the video image. A TVonly line inspection shall be recorded on a digital storage asagreed between the contractor and the client. The contractorshall consult the manufacturer for prior conversion approval ifthe standard format other than that required.8.3 The

45、 transporter with camera and laser line shall beadvanced at a speed commensurate with the softwares capac-ity to accurately measure and digitally record 30 individuallight ring images per second in a high resolution image format.The transporter with camera and laser line illuminated isretracted to t

46、he pipe entry at a speed not to exceed 30 ft/min(9.1 m/min). As a minimum, five full laser ring images shall betaken every inch or two full laser ring images per centimeteralong the longitudinal distance of the pipeline. Any filtering oraveraging of readings and data points shall be reported andappr

47、oved by the engineer. In areas where the pipe exceedsperformance limits, a full ring shall be shown when it exceedsallowable deflection limits.8.4 At the completion of the processing, the operator willselect and hard copy color print a number of optional reportsincluding a line graph of pipelines ov

48、ality and a reference tocalibration. This reference to calibration image will be gener-ated from two independent data sources. Image one source willbe generated solely from the alphanumeric entry of the shape(circle, oval, arch, etc.) and the alphanumeric pipe diameter(6 in. or 150 mm) by the proces

49、sing operator. The secondimage is generated solely by the software from the processedlaser image. The images must overlay each other to confirmcalibration. Addition still frame images (digital or video) ofeach image that exceeds the acceptance parameters or are ofsignificant engineering value can also be provided.8.5 The contractor shall calibrate equipment to the manu-facturers requirements at the end of each CCTV survey.Calibrations shall include all that were performed to calibratethe equipment prior and immediately following the testing bythe ind