1、Designation: F2561 16F2561 17Standard Practice forRehabilitation of a Sewer Service Lateral and Its Connectionto the Main Using a One Piece Main and Lateral Cured-in-Place Liner1,2This standard is issued under the fixed designation F2561; 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 This practice covers requirements and test method
3、s for the reconstruction of a sewer service lateral pipe having an innerdiameter of 3 to 12 in. (7.6 to 30.5 cm) and its connection to the main pipe having an inner diameter of 6 to 24 in. (15.2 to 61.0cm) and up the lateral a maximum of 150 ft without excavation. The lateral pipe is accessed remote
4、ly from the main pipe and froma lateral cleanout. access point. This will be accomplished by the installation of a resin impregnated one-piece main and lateralcured-in-place lining (MLCIPL) by means of air or water inflation and inversion. The MLCIPL is pressed against the host pipeby pressurizing a
5、 bladder and is held in place until the thermoset resins have cured.When cured, the MLCIPLshall be a continuous,one piece, tight fitting, corrosion resistant lining extending over a predetermined length of the lateral pipe and the adjacent sectionof the main pipe, providing a verifiable non-leaking
6、structural connection and seal.1.2 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.1.3 There is no similar or equivalent ISO Standard.1
7、.4 WarningMercury has been designated by many regulatory agencies as a hazardous substance that can cause seriousmedical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Caution shouldbe taken when handling mercury and mercury-containing prod
8、ucts. See the applicable product Safety Data Sheet (SDS) foradditional information. Users should be aware that selling mercury or mercury-containing products, or both, may be prohibited bylocal or national law.1.5 This standard does not purport to address all of the safety concerns, if any, associat
9、ed 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. Particular attention is drawn to those safety regulations and requirementsinv
10、olving entering into and working in confined spaces.1.6 This 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 t
11、he World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:3D618 Practice for Conditioning Plastics for TestingD790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating MaterialsD1600 Terminology
12、 for Abbreviated Terms Relating to Plastics1 This practice is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.67 on Trenchless PlasticPipeline Technology.Current edition approved April 1, 2016Dec. 1, 2017. Published May 2016
13、January 2018. Originally approved in 2006. Last previous edition approved in 20112016 asF2561.16. DOI: 10.1520/F2561-16.10.1520/F2561-17.2 The rehabilitation of a sewer service lateral and its connection to the main using a one-piece main and lateral cured-in-place liner is covered by patents (LMK E
14、nterprises,Inc. 1779 Chessie Lane, Ottawa, IL 61350). Interested parties are invited to submit information regarding the identification of acceptable alternatives to this patented itemto the Committee on Standards, ASTM Headquarters, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. Your comm
15、ents will receive careful consideration at ameeting of the responsible technical committee which may attend.3 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 stand
16、ards Document Summary page on the ASTM website.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 accuratel
17、y, 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 Harbor Driv
18、e, PO Box C700, West Conshohocken, PA 19428-2959. United States1D3681 Test Method for Chemical Resistance of “Fiberglass” (GlassFiberReinforcedThermosetting-Resin) Pipe in a DeflectedConditionD5813 Specification for Cured-In-Place Thermosetting Resin Sewer Piping SystemsF412 Terminology Relating to
19、Plastic Piping SystemsF1216 Practice for Rehabilitation of Existing Pipelines and Conduits by the Inversion and Curing of a Resin-Impregnated TubeF3097 Practice for Installation of an Outside Sewer Service Cleanout through a Minimally Invasive Small Bore VacuumExcavation2.2 NASSCO Guidelines:4Recomm
20、ended Specifications for Sewer Collection System Rehabilitation3. Terminology3.1 DefinitionsUnless otherwise indicated, definitions are in accordance with Terminology F412, and abbreviations are inaccordance with Terminology D1600.3.2 Definitions of Terms Specific to This Standard:3.2.1 access point
21、an existing manhole at either the upstream or downstream end of a sewer main or a cleanout or a pipeopening located on the lateral pipe.3.2.2 bladdera transparenttranslucent flexible plastic hose that when pressurized, causes the main sheet to be pressed againstthe main pipe walls and the lateral tu
22、be to invert up into the sewer service lateral. The bladder joined with the textile lining createsa liner/bladder assembly.3.2.3 inversionthe process of turning a resin-impregnated tube inside out by the use of air or water pressure.3.2.4 launchercombination of a rigid elongated tube and lay-flat ho
23、se apparatus where the main bladder is attached and themain sheet is wrapped around the exterior of the rigid portion. The lateral bladder and lateral tube are drawn inside the hose. Thelauncher is positioned within the main pipe; air pressure is introduced into the hose causing inflation of the mai
24、n bladder/sheet andinversion of the lateral bladder tube.3.2.5 lifta portion of the MLCIPL that has cured in a position such that it has pulled away from the host pipe wall.3.2.6 main and lateral cured-in-place lining (MLCIPL)a textile including plastic coating impregnated by a thermosettingresin. T
25、his pipe is formed within a portion of the existing main pipe and the lateral pipe. Therefore, it takes the shape of an existingTEE or WYE fitting and fits tightly to the existing pipes.3.2.7 resinpolyester, vinyl ester, epoxy or silicate resin systems being ambient, steam, or hot water cured.hot wa
26、ter, or curedUV light.3.2.8 resin slugexcess resin at the uppermosta terminating end of a CIPP lateral lining.3.2.9 sewer service laterala pipe servicing a building or a side merical, industrial or residential building.3.2.10 sheeta flat textile sheet that is formed into a 16 in. (40.6 cm) long tube
27、 within the main pipe. The sheet is connectedto the lateral tube forming a one-piece TEE or WYE shaped fitting.3.2.11 transitionthe change in pipe diameter commonly found in lateral pipes.4. Significance and Use4.1 This practice is for use by designers and specifiers, regulatory agencies, owners, an
28、d inspection organizations who areinvolved in the rehabilitation of sewer service laterals and its connection to the main through the use of a resin-impregnated tubeinstalled within an existing sewer lateral. As for any practice, modifications may be required for specific job conditions.5. Materials
29、5.1 Tube and Sheet:5.1.1 The main sheet and lateral tube shall consist of one or more layers of absorbent textile that is, needle punched felt orcircular knit that meet the requirements of Practice F1216 and Specification D5813, Sections 6 and 8. The main sheet and lateraltube shall be constructed t
30、o withstand installation pressures and to have sufficient strength to bridge missing pipe segments andflexibility to fit irregular pipe sections. The assembly of the tube and main sheet must be stitched and sealed. The interface of themain sheet and tube shall be vacuum tested with 10 in. of Mercury
31、 (Hg) by the manufacturer to verify a leak-free connection. Thevolume of resin used should be sufficient to fill all voids in the tube material at nominal thickness and diameter. The wet-out mainsheet and lateral tube shall have a uniform thickness and excess resin distribution that when compressed
32、at installation pressures,the MLCIPL will meet or exceed the design thickness after cure.4 NASSCO, Inc. 11521 Cronridge Drive, Suite J, Owings Mills, MD 21117. www.nassco.orgF2561 1725.1.2 The outside layer of the tube (before inversion) and the interior of the main sheet (before inflation) shall be
33、 coated withan impermeable, translucent flexible membrane. The main sheet before insertion shall be permanently marked with a lateralidentification correlating to the address of the building that the lateral pipe services. In addition the manufacturers material batchcodes for the liner and the resin
34、 shall be marked on the main sheet. The main sheet and lateral tube shall be surrounded by a secondimpermeable, flexible translucent membrane (translucent bladder) that will contain the resin and facilitate vacuum impregnationand monitoring of the resin saturation during the resin impregnation (wet-
35、out) procedure.5.1.3 The main sheet and lateral tube shall be a one-piece assembly formed as a TEE or WYE shaped fitting. No intermediateor encapsulated elastomeric layers shall be in the textile that may cause delamination in the cured-in-place pipe. The main sheetwill be flat with one end overlapp
36、ing the second end and sized accordingly to create a circular lining equal to the inner diameterof the main pipe.The lateral tube will be continuous in length and the wall thickness shall be uniform.The lateral tube shall includea hydrophilic O-ring attached to the interior surface at the tail end o
37、f the tube. One O-ring shall be attached four inches from theend of the liner and the other shall be attached six inches from the end of the liner. The lateral tube will be capable of conformingto offset joints, bells, and disfigured pipe sections.5.2 Resin:5.2.1 The resin/liner system shall conform
38、 to Test Method D3681, 10 000-h test.5.2.2 The resin shall be a corrosion resistant polyester, vinyl ester, epoxy or silicate resin and catalyst system that when properlycured within the composite pipe assembly, meets the requirements of Practice F1216, the physical properties herein, and those,whic
39、h are to be utilized in the design of the MLCIPL for this project.5.2.3 The resin shall produce a MLCIPL, which will comply with the structural and chemical resistance requirements of PracticeF1216.6. Design Considerations6.1 The MLCIPL shall be designed in accordance with Practice F1216, Appendix X
40、1, with respect to the lateral and main linetubes. If the mainline pipe has been renewed with a structural lining from manhole to manhole, then the mainline portion of theMLCIPL is designed only for hydrostatic buckling.6.1.1 The design for the main sheet and lateral tube shall assume no bonding to
41、the host pipe.7. Installation Recommendations7.1 Access SafetyPrior to entering access areas such as manholes or an excavation pit, performing inspection, or cleaningoperations, an evaluation of the atmosphere to determine the presence of toxic or flammable vapors or lack of oxygen shall beundertake
42、n in accordance with local, state, or federal safety regulations.7.1.1 Cleaning and Pre-Inspection and Post Inspection, in accordance with NASSCO (National Association of Sewer ServiceCompanies) Guidelines.7.1.2 Accessing the LateralA clean-out must The access point shall be located outside of the b
43、uilding and upstream at theupper terminating end of the finished lateral lining. In order to access both the upstream and downstream sides of the lateral pipe,it is recommended that the cleanout access point is TEE shaped where the lateral and riser pipe join. The Tee serves the purposeof CCTV and p
44、roper maintenance for both the upstream and downstream side. One approved method of providing an access pointis described in Practice F3097. See Fig. 1.7.1.3 Plugging the LateralThe upstream side of the access point shall be plugged during insertion and curing of the MLCIPLassembly, ensuring the fol
45、lowing:(1) Public Safety by putting controls in place that prevents the potential for air, steam, or unwanted vapors to enter the buildingor private residence.FIG. 1 Practice F3097 Access PointF2561 173(2) Quality Control by preventing flows and unwanted waste from entering the pipe during liner ins
46、ertion and contaminatingthe resin saturated liner resulting in low physical properties.(3) Quality Assurance by inserting a sewer camera to confirm the liner is fully deployed and provides access to effectivelyremove resin slugs.7.1.4 PluggingPlugging the MainThe upstream side of the cleanout shall
47、be plugged during insertion and curing of theMLCIPL assembly, ensuring no flows enter the pipe and no air, steam, or odors will enter the building. When required, the mainpipe flows will be bypassed. The pumping system will be sufficiently sized for normal to peak flow conditions. The upstreammanhol
48、e is monitored at all times and an emergency deflate system will be incorporated so that the plugs may be removed at anytime without requiring confined space entry. entry7.1.5 Inspection of PipelinesThe interior of the pipeline shall be carefully inspected to determine the location of any conditiont
49、hat shall prevent proper installation, such as roots and collapsed or crushed pipe. These conditions shall be noted so that they canbe corrected before installation of the MLCIPL. Experienced personnel trained in locating breaks, obstacles, and serviceconnections by closed circuit television shall perform inspection of pipelines.7.1.6 Line ObstructionsThe existing service lateral shall be clear of obstructions that prevent the proper insertion andexpansion of the lining system. Changes in pipe size shall be accommodated, by sizing the lateral tube
