欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    ASTM F3095-2017a Standard Practice for Laser Technologies for Direct Measurement of Cross Sectional Shape of Pipeline and Conduit by Rotating Laser Diodes and CCTV Camera System《使用.pdf

    • 资源ID:540025       资源大小:143.03KB        全文页数:6页
    • 资源格式: PDF        下载积分:5000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要5000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    ASTM F3095-2017a Standard Practice for Laser Technologies for Direct Measurement of Cross Sectional Shape of Pipeline and Conduit by Rotating Laser Diodes and CCTV Camera System《使用.pdf

    1、Designation: F3095 17F3095 17aStandard Practice forLaser Technologies for Direct Measurement of CrossSectional Shape of Pipeline and Conduit by Rotating LaserDiodes and CCTV Camera System1This standard is issued under the fixed designation F3095; 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 This practice covers the procedure for th

    3、e post installation verification and acceptance of buried pipe deformation using avisible rotating laser light diode(s), a pipeline and conduit inspection analog or digital CCTV camera system and image processingsoftware. The combination CCTV pipe inspection system, with cable distance counter or on

    4、board distance encoder, rotating laserlight diode(s) and ovality measurement software shall be used to perform a pipe measurement and ovality confirmation survey, ofnew or existing pipelines and conduits as directed by the responsible contracting authority. This standard practice providesminimum req

    5、uirements on means and methods for laser profiling to meet the needs of engineers, contractors, owners, regulatoryagencies, and financing institutions.1.2 This practice applies to all types of material, all types of construction, or shape.1.3 This practice applies to gravity flow storm sewers, drain

    6、s, sanitary sewers, and combined sewers with diameters from 6 to72 in. (150 to 1800 mm).1.4 The Laser Light Diode(s) shall be tested, labeled and certified to conform to US requirements for CDRH Class 2 or below(not considered to be hazardous) laser products or certified to conform to EU requirement

    7、s 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.1.6 This practice includes inspection requirements for determining pipeline and conduit ovalit

    8、y only and does not include allthe required components of a complete inspection. The user of this practice should consider additional items outside this practicefor inspection such as joint gap measurement, soil/water infiltration, crack and hole measurement, surface damage evaluation,evaluation of

    9、any pipeline repairs, and corrosion evaluation.1.7 This standard practice does not address limitations in accuracy due to improper lighting, dust, humidity, fog, moisture onpipe walls or horizontal/vertical offsets. Care should be taken to limit environmental factors in the pipeline that affect accu

    10、racy ofthe inspection.1.8 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.1.9 This standard does not purport to address all of the safe

    11、ty concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine theapplicability of regulatory limitations prior to use. There are no safety hazards specifically, howeve

    12、r, associated with the use ofthe laser profiler specified (listed and labeled as specified in 1.3).1.10 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International

    13、Standards, Guides and Recommendations issuedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.1 This practice is under the jurisdiction of ASTM Committee F36 on Technology and Underground Utilities and is the direct responsibility of Subcommittee F36.20 onInspection and Ren

    14、ewal 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 asF3095-14.-17. DOI: 10.1520/F3095-17.10.1520/F3095-17A.This document is not an ASTM standard and i

    15、s 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 accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the

    16、 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 Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12. Referenced Documents2.1

    17、 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 the Inversion and Curing of a Resin-Impr

    18、egnated TubeF2019 Practice for Rehabilitation of Existing Pipelines and Conduits by the Pulled in Place Installation of Glass ReinforcedPlastic (GRP) Cured-in-Place Thermosetting Resin Pipe (CIPP)2.2 Other Documents:IEC 60825-1 Safety of Laser ProductsPart 1: Equipment Classification and Requirement

    19、s, Jan 20113CDRH Regulations CFR 21, Section I, Subchapter J, Parts 1002 to 1040.1143. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 authority, nparty reasonable for the generation and verification of performance to job specification(s) and contractrequirements.3.1.2 barrel dis

    20、tortion, ndistortion of an image produced by an optical system that causes straight lines at image margins tobulge outwards.3.1.3 CCTV, na closed circuit pipeline and conduit inspection television system including a camera, camera transporter,integrated lighting, central control system, video monito

    21、r and recording device.3.1.4 laser, na solid state device that produces a monochromatic and coherent beam of visible light in an intense, narrowbeam.3.1.5 laser light diode, na mobile, certified “eye safe” laser light source and internal optics capable of projecting a narrowbeam of laser light onto

    22、an internal pipe wall in pipes from 6 to 72 in. (150 to 1800 mm) in diameter regardless of material, design,or shape.3.1.6 laser profile, nthe spatial intensity profile of a laser beam at a particular plane transverse to the beam propagation path.3.1.7 laser profiling survey, na survey composed of t

    23、aking measurements of the cross sectional shape of the pipe at variousstations along its alignment, processing the data using an appropriate software and producing a condition assessment report usinglaser profiling technology.3.1.8 ovality, npercentage of shape deflection in circular and noncircular

    24、 pipes as calculated per Practice F1216 or PracticeF2019 as defined in Annex A1.3.1.9 profiling software, nthe software that analyzes the collected data from a laser profiling effort into deformed crosssectional profiles along the pipe of conduit alignment.4. Significance and Use4.1 Laser profiling

    25、assessment is a quality control tool 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 capabilities include:4.1.1

    26、Measurement of the structural shape, cross 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 surv

    27、ey provides significant information in a 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, or degree of deformation, deflection or deviati

    28、on, that is often notpossible from an inspection by either a mandrel or only CCTV.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:

    29、5.2 Access to the survey site to be provided to the extent that the contracting authority can provide such access.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

    30、 standards Document Summary page on the ASTM website.3 Available from International Electrotechnical Commission (IEC), 3, rue de Varemb, 1st Floor, 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 Adminis

    31、tration, 10903 New Hampshire Avenue, WO66-4621, Silver Spring, MD20993, http:/www.fda.gov.F3095 17a25.3 The utility owner shall ensure that all lines to be profiled are free of debris, obstructions, and cleaned within 24 h prior tothe profiling inspection. Standing or flowing water or debris shall n

    32、ot exceed 10 % of the nominal pipe diameter, or six (6) in. (150mm) in depth, whichever is the lesser.6. Equipment6.1 The laser profiling equipment, including laser diode(s) and CCTV inspection system (Fig. 1) shall be configured andcalibrated by the laser profiling equipment manufacturer, as per th

    33、e same specifications of the equipment “Certificate ofAccuracy”in accordance with Section 9.6.2 Only calibration and laser distance software algorithms, as specified by the software manufacturer, shall be used as per thesame specifications of the equipment “Certificate of Accuracy.”6.3 The profiling

    34、 survey software shall be a version that meets or exceeds the contents of this practice.6.4 The processing computer shall be equal to or exceed those specified by the software manufacturer.7. Software7.1 The recorded pipeline and conduit survey video shall be loaded into a computer with CCTV pipelin

    35、e and conduit inspectionand profiling processing software, meeting the technical requirements as stated herein installed.7.2 The profile software shall analyze the laser image of each recorded video frame. By using a combination of camera headposition, laser position, and known calibration values th

    36、e software will calculate the measurement data.7.3 The ovality shall be calculated per Practice F1216 as given in Annex A1. If the shape of the original pipe deviatessignificantly (more than 10 % from the nominal diameter) from that of an equivalent circle when the flow area is matched, changesin cu

    37、rvature shall be considered as a better measure of the degree of pipe deformation.8. Procedure8.1 The pipe shall be pre-cleaned and free of debris that would prevent the CCTV camera and laser diode assembly, shown inFig. 1, from moving through the pipe, or adversely affect the accuracy of the survey

    38、. Flow or debris, within the line, shall be lessthan 10 % of the nominal pipe diameter of 6 in. (150 mm) in depth whichever is the lesser.8.2 A CCTV pipeline and conduit inspection system shall be placed into the pipeline and conduit to be surveyed. A recordedinspection header shall contain complete

    39、 pipe data including 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 distorting the video image. The TV onlyline inspection shall be recorded on a digital storage device in a digital video format

    40、as agreed among the contractor and the client.8.3 The laser profile consists of two types of scans: point and line measurement.8.4 The point measurement is taken while the camera is stationary at single point. The camera will rotate 360 degrees to capturemeasurement data.8.5 Aline measurement is cap

    41、tured by rotating the camera head 360 degrees continuously while the system traverses the lengthof a pipe.8.6 Aprofiler shall project visible laser (light) while rotating around the internal pipe surface.Apipeline and conduit inspectionCCTV analog or digital video camera system shall continuously ca

    42、pture the laser image as the laser profile system is movedthrough the line. The distance to capture a full rotation shall be established jointly by the user and the contractor, by both partiesFIG. 1 CCTVRotating Laser Profile Camera in PipeF3095 17a3considering the objectives and the size of the pip

    43、e or conduit, neither to exceed a line at a longitudinal travel speed of 30 ft/minnor exceed the pitch of 4 in. for pipe materials other than those with a corrugated pipe wall. For the (9.1 m/min). For pipelineswith an interior corrugated pipe wall, the pitch needed to capture a 360 degree view shal

    44、l not exceed the pipe wall pitch (crest tocrest of the corrugated pipe wall) or 4 in. whichever is smaller. wall). The header of the printed and stored reports shall includethe distance traveled to capture a 360 degree view of the pipeline. As a minimum, five full laser ring (complete rotations) ima

    45、gesshall be taken every inch or two full laser ring (complete rotations) images per centimeter along the longitudinal distance of thepipeline. Any filtering or averaging of readings and data points shall be reported and approved by the engineer. In areas where thepipe exceeds performance limits, a f

    46、ull ring (stationary scan) shall be shown when it exceeds allowable deflection limits.8.7 All CCTV video shall be recorded in a digital format and resolution, assuring acceptable image resolution.8.8 By comparing the known calibrated measurements of the laser diodes, the profiling software shall be

    47、able to determine thedistance from the camera to the pipe wall.8.9 Upon completion of the point or line scan the processing software will calculate the pipe size at each measured position.9. Accuracy and Precision9.1 The accuracy of a measurement system is the degree of closeness of measurements of

    48、a quantity to that quantitys actual(true) value. The laser light diode 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.NOTE 1T

    49、he precision of a measurement system, also called reproducibility or repeatability, is the degree to which repeated measurements underunchanged conditions show the same results. A measurement system can be accurate but not precise, precise but not accurate, neither, or both. Forexample, if the data collection method is affected by a systematic error, increasing the number of times the instrument is run through the pipe increasesprecision but does not improve accuracy. The result would be consistent yet inaccurate results from the flawed method. Eliminating the syst


    注意事项

    本文(ASTM F3095-2017a Standard Practice for Laser Technologies for Direct Measurement of Cross Sectional Shape of Pipeline and Conduit by Rotating Laser Diodes and CCTV Camera System《使用.pdf)为本站会员(livefirmly316)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开