1、Designation: F3080 14F3080 17Standard 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 indic
2、ates 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 Scope*1.1 Laser profiling is a non-contact ins
3、pection 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 surfa
4、ce of 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 standardpra
5、ctice 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 appli
6、es to depressurized and gravity flow storm sewers, drains, sanitary sewers, and combined sewers withdiameters from 6 to 72 in. (150 and 1800 mm). The pipe shall be precleaned and free of debris that would prevent the CCTVcamera and laser projector assembly, shown in Fig. 1, from moving through the p
7、ipe, or adversely affect the accuracy of the survey.Flow or debris, within the line, shall be less than 10 % of the nominal pipe diameter or 6 in. in depth whichever is the lesser.1.4 The laser light projector shall be tested, labeled and certified to conform to US requirements for CDRH Class 2 or b
8、elow(not considered to be hazardous) laser products or certified to conform to EU requirements for Class 2M or below laser productsas per IEC 60825-1, or both.1.5 The profiling process may require physical access to lines, entry manholes and operations along roadways that may includesafety hazards.1
9、.4 This standard does not include all aspects of pipe inspection; for example the following are not covered by this standard:inspection, such as joint gaps, soil/water infiltration in joints, cracks, holes, surface damage, repairs, corrosion, and structuralproblems associated with these.these condit
10、ions.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 profiling process may require physical access to lines, entry manholes
11、, 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 appropriate safety and health practices and determine the applic
12、ability of regulatorylimitations prior to use. There are no safety hazards specifically, however, associated with the use of the laser ring profiler specified(listed and labeled as specified in 1.3).1.8 This international standard was developed in accordance with internationally recognized principle
13、s 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) Committee.1 This test method practice is under the jurisdiction of ASTM Committee F36 on Te
14、chnology and Underground Utilities and is the direct responsibility of SubcommitteeF36.20 on Inspection and Renewal of Water and Wastewater Infrastructure.Current edition approved Aug. 1, 2014April 1, 2017. Published August 2014May 2017. Originally approved in 2014. Last previous edition approved in
15、 2014 as F3080-14.DOI: 10.1520/F308014.10.1520/F3080-17.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 technically possible to adequately depict all changes
16、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 standardCopyright ASTM International, 100 Barr Ha
17、rbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12. 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 Practic
18、e for Rehabilitation of Existing Pipelines and Conduits by the 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 2011.3CDRH Regulations CFR 21, Section I, Subchapter J, Parts 1002 to 1040.11
19、43. 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 distortiondistortion of an image produced by an optical system that causes straight l
20、ines 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 software.3.1.4 CCTV, na closed circuit pipeline and conduit inspection television s
21、ystem 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 to move transverse to the pipealignment once it enters the inside of the pipe t
22、hrough 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 computer, nan electronic machine that performs rapid, complex calculations, correlates the proce
23、ssed data, generatesimaging and corresponding alpha numeric information.3.1.8 curvaturethe reciprocal of the radius of the inner surface at a location along the perimeter of the noncircular shaped pipe,culvert or conduit.3.1.9 deflectionshape change or reduction in diameter of a conduit produced wit
24、hout fracturing the material.3.1.10 deformto change the shape of an object so that it no longer has its original or normal shape.3.1.11 deviationa condition that is different from what is expected or specified.3.1.7 laser, na solid state device that produces a monochromatic and coherent beam of visi
25、ble 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.3.1.14 laser profiling equipmentequipment used in performing a laser profiling o
26、bservation.3.1.9 laser profiling 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 deviat
27、ion, using laser profiling technology.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 Intern
28、ational Electrotechnical Commission (IEC), 3, rue de Varemb, P.O. Box 131, CH-1211 Geneva 20, Switzerland, http:/www.iec.ch.4 Available from Center for Devices and Radiological Health (CDRH), Food and Drug Administration, 10903 New Hampshire Avenue, WO66-4621, Silver Spring, MD20993, http:/www.fda.g
29、ov.FIG. 1 CCTVLaser Profiler AssemblyF3080 1723.1.10 laser projector assemblya 360 degree laser light projector assembly composed of two primary components: laser signalmodulation unit.3.1.17 MTFB, nMean Time Between Failures.3.1.18 NASSCONational Association of Sewer Service Companies.3.1.11 non-ro
30、tating laser projector, na mobile, certified “eye safe” laser light source and internal optics capable of projectinga 360 degree narrow 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.3.1.20 NTSCNational Te
31、levision Systems CommitteeResponsible for setting television and video standards in the UnitedStates. Defines a composite video signal as 60 half frames (fields) per second, 30 frames per second. Each frame contains 525 lines.3.1.12 ovality, npercentage of shape deflection in circular and noncircula
32、r pipes as calculated per Practice F1216 as definedin Annex A1.3.1.13 PALPhase Alternating LineA color encoding system for analog television not used in North America containing 25half frames, 50 frames per second. Each frame contains 625 lines.3.1.23 processing or measurement software, na software
33、for processing the recorded CCTV images of a projected laser lightline on the internal surfaces of a pipe while moving through the line at a speed not to exceed 30 ft/min (9 m/min) and generatingspecified reports.3.1.14 profiling softwarethe software that analyzes the collected data from a laser pro
34、filing survey into cross sectional profilesalong the 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 Op
35、erational experience and independent testing have fully documented that the usable life, maintenance and failure andmean time between failures (MTBF) in buried storm and wastewater lines can be directly affected by the defects duringmanufacturing, incorrect pipe storage, and improper installation, i
36、ncluding improper compaction often resulting in the deformation(Ovality or shape, or both) and physical damage in newly installed, repaired and replaced pipelines. Laser profiling assessment isan effective a quality control tool for identifying and quantifying deformation, physical damage, and other
37、 pipe anomalies afterinstallation, providing valuable means and methods for determining the quality of workmanship and compliance with projectspecifications. Laser profiling can be used for:4.1.1 Measurement of the structural shape, cross sectional area and defects;4.1.2 Collection of data needed fo
38、r better pipe rehabilitation or replacement design; and4.1.3 Post rehabilitation, replacement or new construction workmanship verification.4.2 This standard practice provides minimum requirements on means and methods for laser profiling to meet the needs ofengineers, contractors, owners, regulatory
39、agencies and financing institutions.4.2 Alaser profile pre-acceptance and condition assessment survey shall provide provides significant information in a clear andconcise manner, including but not limited to graphs and still frame digital images of pipe condition prior to acceptance, therebyprovidin
40、g objective data on the installed quality and percentage ovality, deformation, deflection or deviation, that is often notpossible from an inspection by either a mandrel or CCTV only survey.4.4 This practice applies to gravity flow or depressurized linesstorm sewers, sanitary sewers, combined sewers,
41、 siphons, edgedrains, highway drains, and culverts, and to all other pipelines, ducts and conduits that are made accessible and meet therequirements of 1.3, regardless of shape, design, configuration or material (smooth or corrugated). The line shall be free of excessdebris and obstructions with a m
42、aximum flow level or stagnant water, during laser profiling, not to exceed 10 % of nominal pipediameter or 6 in. in depth, whichever is the lesser.5. Accuracy and Precision5.1 The accuracy of a measurement system is the degree of closeness of measurements of a quantity to that quantitys actual(true)
43、 value. The laser light projector system, with the profiling software, shall be tested and approved by an independent testingagency, and shall include a “Certificate ofAccuracy” equal to or better than 0.5 % of the lower nominal cross sectional dimension.The precision of a measurement system, also c
44、alled reproducibility or repeatability, is the degree to which repeated measurementsunder unchanged conditions show the same results.Ameasurement system can be accurate but not precise, precise but not accurate,neither, or both. For example, if the data collection method is affected by a systematic
45、error, increasing the number of times theinstrument is run through the pipe, increases precision but does not improve accuracy.The result would be consistent yet inaccurateresults from the flawed method. Eliminating the systematic error improves accuracy but does not change precision.5.2 The testing
46、 of the independent testing agency shall be to a traceable standard of the National Institute of Standards andTechnology (NIST), or equivalent. A minimum of five measurements shall be taken and shall result in a standard deviation of 2F3080 173 (94.7 %) for precision (repeatability) or better. The i
47、ndependent testing agency shall have met a minimum level of proficiencyin testing and professional standards for a laboratory to certify the accuracy of the equipment.5.3 The longitudinal position of the pipe is measured by a device in contact with the connection cable, positioning cable or rope.The
48、 longitudinal location shall be measured to within an accuracy of 2 %; in addition, a tolerance of 2 ft (0.6 m) for the insertionand exit distance between the CCTV and the laser projection unit shall be allowed in the data and the reports.5.3.1 Accuracy is independent of pipe size provided the follo
49、wing conditions are met:5.3.1.1 The CCTV camera is looking directly down the pipe (home position) for both profile inspection, and again duringcalibration.5.3.1.2 The laser ring can be seen by the camera clearly through 360 degrees. The laser line is crisp and clear, not fat andfuzzythe laser heads are tailored to suit the camera and pipe size/material.5.3.1.3 The laser is projected perpendicular to the pipe wall so that the profile is an accurate representation of the pipe shape.5.3.1.4 The snapon and skid systems are all designed to provide
