ASTM F3080-2017a Standard Practice for Laser Technologies for Measurement of Cross-Sectional Shape of Pipeline and Conduit by Non-Rotating Laser Projector and CCTV Camera System《使用.pdf

1、Designation: F3080 17F3080 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 indi

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

3、on method used to create a pipe wall profile and internal measurement using astandard CCTV pipe inspection system, 360 degree laser light projector, and special geometrical profiling software. This practicecovers the procedure for the measurement to determine any deviation of the internal surface of

4、 installed pipe compared to thedesign. The measurements may be used to verify that the installation has met design requirements for acceptance or to collect datathat will facilitate an assessment of the condition of pipe or conduit due to structural deviations or deterioration. This standardpractice

5、 provides minimum requirements on means and methods for laser profiling to meet the needs of engineers, contractors,owners, regulatory agencies, and financing institutions.1.2 This practice applies to all types of pipe material, all types of construction, and pipe shapes.1.3 This practice applies to

6、 depressurized and gravity flow storm sewers, drains, sanitary sewers, and combined sewers withdiameters from 6 to 72 in. (150 and 1800 mm).1.4 This standard does not include all aspects of pipe inspection, such as joint gaps, soil/water infiltration in joints, cracks, holes,surface damage, repairs,

7、 corrosion, and structural problems associated with these conditions.1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.6 The profil

8、ing process may require physical access to lines, entry manholes, and operations along roadways that may includesafety hazards.1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish

9、appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitations prior to use. There are no safety hazards specifically, however, associated with the use ofthe laser ring profiler specified (listed and labeled as specified in 1.3).1.8 This

10、 international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT

11、) Committee.2. Referenced Documents2.1 ASTM Standards:2E177 Practice for Use of the Terms Precision and Bias in ASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test MethodF1216 Practice for Rehabilitation of Existing Pipelines and Conduits by th

12、e Inversion and Curing of a Resin-Impregnated Tube2.2 Other Standards:IEC 60825-1 Safety of Laser Products Part 1: Equipment Classification and Requirements, Jan 2011.31 This practice is under the jurisdiction of ASTM Committee F36 on Technology and Underground Utilities and is the direct responsibi

13、lity of Subcommittee F36.20 onInspection and Renewal of Water and Wastewater Infrastructure.Current edition approved April 1, 2017Dec. 1, 2017. Published May 2017December 2017. Originally approved in 2014. Last previous edition approved in 20142017 asF3080-14.-17. DOI: 10.1520/F3080-17.10.1520/F3080

14、-17A.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from International Electrotechnical Commissi

15、on (IEC), 3, rue de Varemb, 1st Floor, P.O. Box 131, CH-1211 Geneva 20, Switzerland, http:/www.iec.ch.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technica

16、lly possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this sta

17、ndardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1CDRH Regulations CFR 21, Section I, Subchapter J, Parts 1002 to 1040.1144 Available from Center for Devices and Radiological Health (CDRH), Food and Drug Administration, 10903 New H

18、ampshire Avenue, WO66-4621, Silver Spring, MD20993, http:/www.fda.gov.F3080 17a23. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 authority, nparty responsible for the generation and verification of performance to job specification(s) and contractrequirements.3.1.2 barrel distor

19、tiondistortion of an image produced by an optical system that causes straight lines at image margins tobulge outwards.3.1.3 barrel distortion correction confirmation targetan X-Yaxis grid patterned for the post processing verification of “fisheyedistortion” lens correction within the processing soft

20、ware.3.1.4 CCTV, na closed circuit pipeline and conduit inspection television system including an NTSC or PAL camera, cameratransporter, integrated lighting, central control system, video monitor and recording device.3.1.5 CCTV camera transporterthe device that provides mobility for the CCTV camera

21、to move transverse to the pipealignment once it enters the inside of the pipe through manholes and/or other line access openings.3.1.6 CCTV pipeline and conduit inspection systemCCTV inspection system is composed of CCTV camera, transporter,controller and video recording unit.3.1.7 laser, na solid s

22、tate device that produces a monochromatic and coherent beam of visible light in an intense, narrow 360degree beam.3.1.8 laser profilethe spatial intensity profile of a laser beam at a particular plane that is perpendicular to the trajectory of thelaser device along the axis of the pipe.3.1.9 laser p

23、rofiling surveya survey composed of taking measurements of the cross sectional shape of the pipe at a rate greaterthan 24 images per second along its alignment, processing the recorded data using compatible software and producing a conditionassessment report, including deviation, using laser profili

24、ng technology.3.1.10 laser projector assemblya 360 degree laser light projector assembly composed of two primary components: laser signalmodulation unit.3.1.11 non-rotating laser projector, na mobile, certified “eye safe” laser light source and internal optics capable of projectinga 360 degree narro

25、w beam of laser light onto an internal pipe wall in pipes from 6 to 72 in. (150 to 1800 mm) in diameter regardlessof material, design, or shape.3.1.12 ovality, npercentage of shape deflection in circular and noncircular pipes as calculated per Practice F1216 as definedin Annex A1.3.1.13 PALPhase Alt

26、ernating LineA color encoding system for analog television not used in North America containing 25half frames, 50 frames per second. Each frame contains 625 lines.3.1.14 profiling softwarethe software that analyzes the collected data from a laser profiling survey into cross sectional profilesalong t

27、he pipe of conduit alignment.3.1.15 survey calibratora calibrated measurement reference placed and recorded on the same plane and distance from theCCTV camera as the projected laser light ring during the profiling survey.4. Significance and Use4.1 Laser profiling assessment is a quality control tool

28、 for identifying and quantifying deformation, physical damage, and otherpipe anomalies after installation, providing means and methods for determining the quality of workmanship and compliance withproject specifications. Laser profiling can be used for:4.1.1 Measurement of the structural shape, cros

29、s sectional area and defects;4.1.2 Collection of data needed for pipe rehabilitation or replacement design; and4.1.3 Post rehabilitation, replacement or new construction workmanship verification.4.2 A laser profile pre-acceptance and condition assessment survey provides significant information in a

30、clear and concisemanner, including but not limited to graphs and still frame digital images of pipe condition prior to acceptance, thereby providingobjective data on the installed quality and percentage ovality, deformation, deflection or deviation, that is often not possible froman inspection by ei

31、ther a mandrel or CCTV only survey.5. Contract Responsibilities5.1 Apart from the provisions generally included in a testing and certification contract, the laser profiling survey contract shalldefine and assign responsibilities for the following items:5.1.1 Access to the survey site to be provided

32、to the extent that the contracting authority can provide such access.F3080 17a35.1.2 The utility owner shall ensure that all lines to be profiled and free of debris, obstructions and cleaned within 24 h priorto the profiling inspection and survey. If the pipe condition is the cause for unacceptable

33、results then the reinspection shall be borneby the client of the inspection provider. Standing or flowing water or debris shall not exceed 10 % of the nominal pipe diameter,or 6 in. in depth, whichever is the lesser.6. Equipment6.1 The laser profiling equipment, including laser projector and CCTV in

34、spection system (Fig. 1), shall be configured as per themanufacturers technical specifications and the specifications of the equipment “Certificate ofAccuracy,” as required under Section9.6.2 Only calibration and lens distortion barrel correction software algorithms, as specified by the software man

35、ufacturer, shallbe used per the specifications of the equipment “Certificate of Accuracy.”6.3 The inspection and survey CCTV camera system “Image Barrel Distortion” shall be corrected by the software and recordedwithin the processing software for post inspection verification, and as per the specific

36、ations of the equipment “Certificate ofAccuracy.”6.4 The survey software used shall be the currently supported version as provided by the software manufacturer.6.5 The processing computer shall be equal to or exceed those as specified by the software manufacturer.7. Software7.1 The recorded pipeline

37、 and conduit survey video shall be loaded onto a computer with CCTV pipeline, conduit inspectionprofiling processing software, meeting the technical requirements as stated herein installed.7.2 The applicable camera “barrel distortion” correction shall be selected and verified based on the actual CCT

38、V camera andlens as used in recording the laser imaging data.7.3 Horizontal and vertical calibration shall be performed as stipulated by the manufacturer of the software.7.4 The profile software shall have the capability to analyze the laser image of each recorded video frame. The image centershall

39、be calculated by the processing software for each recorded video frame. A minimum of 1080 radius data points shall beinterrogated per video frame. The distance from each usable data point shall be automatically calculated and stored. Using thestored measurement data, the pipeline and conduit median

40、diameter shall be calculated and established as the diameter forcalculating percentage deviation from line ovality (deformation). Data points affected or impaired by water, debris, fog, etc., shallbe discarded and not used in the calculation of line ovality and deformation.7.5 The ovality shall be c

41、alculated per Practice F1216 as given in AnnexA1 for all pipe shapes. If the shape of the original pipedeviates significantly (more than 10 % from the nominal diameter) from that of an equivalent circle when the flow area is masked,changes in curvature shall be considered as a better measure of the

42、degree of pipe deformation.7.6 For non circular designed pipes, the deviation of the observed inspection from the original pipe design shall be calculatedper the software manufacturers shape algorithm.8. Procedure8.1 The pipe shall be precleaned and free of debris that would prevent the CCTV camera

43、and laser projector assembly, shownin Fig. 1, from moving through the pipe, or adversely affect the accuracy of the survey. Flow or debris, within the line, shall beless than 10 % of the nominal pipe diameter or 6 in. in depth, whichever is the lesser.8.2 A CCTV pipeline and conduit inspection syste

44、m shall be placed into the pipeline and conduit to be surveyed. A recordedinspection header shall contain complete pipe data including map location, pipe type, pipe size, and date of inspection. The CCTVdistance counter shall be set to zero and displayed in the video without overlapping or distortin

45、g the video image. ATV only lineinspection shall be recorded on a digital storage as agreed between the contractor and the client. The contractor shall consult themanufacturer for prior conversion approval if the standard format other than that required.FIG. 1 CCTVLaser Profiler AssemblyF3080 17a48.

46、3 The transporter with camera and laser line shall be advanced at a speed commensurate with the softwares capacity toaccurately measure and digitally record 30 individual light ring images per second in a high resolution image format. Thetransporter with camera and laser line illuminated is retracte

47、d to the pipe entry at a speed not to exceed 30 ft/min.ft/min (9.1m/min). As a minimum, five full laser ring images shall be taken every inch or two full laser ring images per centimeter along thelongitudinal distance of the pipeline. Any filtering or averaging of readings and data points shall be r

48、eported and approved by theengineer. In areas where the pipe exceeds performance limits, a full ring shall be shown when it exceeds allowable deflection limits.8.4 At the completion of the processing, the operator will select and hard copy color print a number of optional reports includinga line gra

49、ph of pipelines ovality and a reference to calibration. This reference to calibration image will be generated from twoindependent data sources. Image one source will be 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 processing operator. The second image is generated solely bythe software from the processed laser image. The images must overlay each other to confirm calibration. Addition still frameimages (digital or video) of each image that exceeds the accept