1、Designation: F2561 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 the year o
2、foriginal 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 methods forthe
3、 reconstruction of a sewer service lateral pipe having aninner diameter of 3 to 12 in. (7.6 to 30.5 cm) and its connectionto the main pipe having an inner diameter of 6 to 24 in. (15.2to 61.0 cm) and up the lateral a maximum of 150 ft withoutexcavation. The lateral pipe is accessed remotely from the
4、 mainpipe and from a lateral access point. This will be accomplishedby the installation of a resin impregnated one-piece main andlateral cured-in-place lining (MLCIPL) by means of air infla-tion and inversion. The MLCIPL is pressed against the hostpipe by pressurizing a bladder and is held in place
5、until thethermoset resins have cured. When cured, the MLCIPLshall bea continuous, one piece, tight fitting, corrosion resistant liningextending over a predetermined length of the lateral pipe andthe adjacent section of the main pipe, providing a verifiablenon-leaking structural connection and seal.1
6、.2 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.1.3 There is no similar or equivalent ISO Standard.1.4 WarningMercury has been designa
7、ted by many regu-latory agencies as a hazardous substance that can cause seriousmedical issues. Mercury, or its vapor, has been demonstrated tobe hazardous to health and corrosive to materials. Cautionshould be taken when handling mercury and mercury-containing products. See the applicable product S
8、afety DataSheet (SDS) for additional information. Users should be awarethat selling mercury or mercury-containing products, or both,may be prohibited by local or national law.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibi
9、lity of the user of this standard to establish appro-priate safety, health, and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization
10、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 Documents2.1 ASTM Standards:3D618 Practice for Conditioning Plastics for TestingD790 Te
11、st Methods for Flexural Properties of Unreinforcedand Reinforced Plastics and Electrical Insulating Materi-alsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD3681 Test Method for Chemical Resistance of “Fiberglass”(GlassFiberReinforced Thermosetting-Resin) Pipe in aDeflected ConditionD5
12、813 Specification for Cured-In-Place ThermosettingResin Sewer Piping SystemsF412 Terminology Relating to Plastic Piping SystemsF1216 Practice for Rehabilitation of Existing Pipelines andConduits by the Inversion and Curing of a Resin-Impregnated TubeF3097 Practice for Installation of an Outside Sewe
13、r ServiceCleanout through a Minimally Invasive Small BoreVacuum Excavation1This practice is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.67 onTrenchless Plastic Pipeline Technology.Current edition approved Dec. 1, 2017. Pu
14、blished January 2018. Originallyapproved in 2006. Last previous edition approved in 2016 as F256116. DOI:10.1520/F2561-17.2The rehabilitation of a sewer service lateral and its connection to the main usinga one-piece main and lateral cured-in-place liner is covered by patents (LMKEnterprises, Inc. 1
15、779 Chessie Lane, Ottawa, IL 61350). Interested parties areinvited to submit information regarding the identification of acceptable alternativesto this patented item to the Committee on Standards, ASTM Headquarters, 100 BarrHarbor Drive, West Conshohocken, PA 19428-2959. Your comments will receiveca
16、reful consideration at a meeting of the responsible technical committee which mayattend.3For referenced 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 Summa
17、ry page onthe ASTM website.*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 StatesThis international standard was developed in accordance with internationally recognized princip
18、les on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.12.2 NASSCO Guidelines:4Recommended Specifications for Sewer Collection System
19、Rehabilitation3. Terminology3.1 DefinitionsUnless otherwise indicated, definitions arein accordance with Terminology F412, and abbreviations are inaccordance with Terminology D1600.3.2 Definitions of Terms Specific to This Standard:3.2.1 access pointan existing manhole at either the up-stream or dow
20、nstream end of a sewer main or a cleanout or apipe opening located on the lateral pipe.3.2.2 bladdera translucent flexible plastic hose that whenpressurized, causes the main sheet to be pressed against themain pipe walls and the lateral tube to invert up into the sewerservice lateral. The bladder jo
21、ined with the textile liningcreates a liner/bladder assembly.3.2.3 inversionthe process of turning a resin-impregnatedtube inside out by the use of air or water pressure.3.2.4 launchercombination of a rigid elongated tube andlay-flat hose apparatus where the main bladder is attached andthe main shee
22、t is wrapped around the exterior of the rigidportion. The lateral bladder and lateral tube are drawn insidethe hose. The launcher is positioned within the main pipe; airpressure is introduced into the hose causing inflation of themain bladder/sheet and inversion of the lateral bladder tube.3.2.5 lif
23、ta portion of the MLCIPL that has cured in aposition such that it has pulled away from the host pipe wall.3.2.6 main and lateral cured-in-place lining (MLCIPL)atextile including plastic coating impregnated by a thermoset-ting resin. This pipe is formed within a portion of the existingmain pipe and t
24、he lateral pipe. Therefore, it takes the shape ofan existing TEE or WYE fitting and fits tightly to the existingpipes.3.2.7 resinpolyester, vinyl ester, epoxy or silicate resinsystems being ambient, steam, hot water, or cured UV light.3.2.8 resin slugexcess resin at a terminating end of a CIPPlatera
25、l lining.3.2.9 sewer service laterala pipe servicing a commerical,industrial or residential building.3.2.10 sheeta flat textile sheet that is formed into a 16 in.(40.6 cm) long tube within the main pipe. The sheet isconnected to the lateral tube forming a one-piece TEE or WYEshaped fitting.3.2.11 tr
26、ansitionthe change in pipe diameter commonlyfound in lateral pipes.4. Significance and Use4.1 This practice is for use by designers and specifiers,regulatory agencies, owners, and inspection organizations whoare involved in the rehabilitation of sewer service laterals andits connection to the main t
27、hrough the use of a resin-impregnated tube installed within an existing sewer lateral. Asfor any practice, modifications may be required for specific jobconditions.5. Materials5.1 Tube and Sheet:5.1.1 The main sheet and lateral tube shall consist of one ormore layers of absorbent textile that is, ne
28、edle punched felt orcircular knit that meet the requirements of Practice F1216 andSpecification D5813, Sections 6 and 8. The main sheet andlateral tube shall be constructed to withstand installationpressures and to have sufficient strength to bridge missing pipesegments and flexibility to fit irregu
29、lar pipe sections. Theassembly of the tube and main sheet must be stitched andsealed. The interface of the main sheet and tube shall bevacuum tested with 10 in. of Mercury (Hg) by the manufac-turer to verify a leak-free connection. The volume of resin usedshould be sufficient to fill all voids in th
30、e tube material atnominal thickness and diameter. The wet-out main sheet andlateral tube shall have a uniform thickness and excess resindistribution that when compressed at installation pressures, theMLCIPL will meet or exceed the design thickness after cure.5.1.2 The outside layer of the tube (befo
31、re inversion) andthe interior of the main sheet (before inflation) shall be coatedwith an impermeable, translucent flexible membrane. The mainsheet before insertion shall be permanently marked with alateral identification correlating to the address of the buildingthat the lateral pipe services. In a
32、ddition the manufacturersmaterial batch codes for the liner and the resin shall be markedon the main sheet. The main sheet and lateral tube shall besurrounded by a second impermeable, flexible translucentmembrane (translucent bladder) that will contain the resin andfacilitate vacuum impregnation and
33、 monitoring of the resinsaturation during the resin impregnation (wet-out) procedure.5.1.3 The main sheet and lateral tube shall be a one-pieceassembly formed as a TEE or WYE shaped fitting. Nointermediate or encapsulated elastomeric layers shall be in thetextile that may cause delamination in the c
34、ured-in-place pipe.The main sheet will be flat with one end overlapping thesecond end and sized accordingly to create a circular liningequal to the inner diameter of the main pipe. The lateral tubewill be continuous in length and the wall thickness shall beuniform. The lateral tube shall include a h
35、ydrophilic O-ringattached to the interior surface at the tail end of the tube. OneO-ring shall be attached four inches from the end of the linerand the other shall be attached six inches from the end of theliner. The lateral tube will be capable of conforming to offsetjoints, bells, and disfigured p
36、ipe sections.5.2 Resin:5.2.1 The resin/liner system shall conform to Test MethodD3681, 10 000-h test.5.2.2 The resin shall be a corrosion resistant polyester, vinylester, epoxy or silicate resin and catalyst system that whenproperly cured within the composite pipe assembly, meets therequirements of
37、Practice F1216, the physical properties herein,and those, which are to be utilized in the design of the MLCIPLfor this project.4NASSCO, Inc. 11521 Cronridge Drive, Suite J, Owings Mills, MD 21117.www.nassco.orgF2561 1725.2.3 The resin shall produce a MLCIPL, which will complywith the structural and
38、chemical resistance requirements ofPractice F1216.6. Design Considerations6.1 The MLCIPL shall be designed in accordance withPractice F1216, Appendix X1, with respect to the lateral andmain line tubes. If the mainline pipe has been renewed with astructural lining from manhole to manhole, then the ma
39、inlineportion of the MLCIPL is designed only for hydrostaticbuckling.6.1.1 The design for the main sheet and lateral tube shallassume no bonding to the host pipe.7. Installation Recommendations7.1 Access SafetyPrior to entering access areas such asmanholes or an excavation pit, performing inspection
40、, orcleaning operations, an evaluation of the atmosphere to deter-mine the presence of toxic or flammable vapors or lack ofoxygen shall be undertaken in accordance with local, state, orfederal safety regulations.7.1.1 Cleaning and Pre-Inspection and Post Inspection, inaccordance with NASSCO (Nationa
41、l Association of SewerService Companies) Guidelines.7.1.2 Accessing the LateralThe access point shall belocated outside of the building and upstream at the upperterminating end of the finished lateral lining. In order to accessboth the upstream and downstream sides of the lateral pipe, itis recommen
42、ded that the access point is TEE shaped where thelateral and riser pipe join. The Tee serves the purpose of CCTVand proper maintenance for both the upstream and downstreamside. One approved method of providing an access point isdescribed in Practice F3097. See Fig. 1.7.1.3 Plugging the LateralThe up
43、stream side of the accesspoint shall be plugged during insertion and curing of theMLCIPL assembly, ensuring the following:(1) Public Safety by putting controls in place that preventsthe potential for air, steam, or unwanted vapors to enter thebuilding or private residence.(2) Quality Control by prev
44、enting flows and unwantedwaste from entering the pipe during liner insertion and con-taminating the resin saturated liner resulting in low physicalproperties.(3) Quality Assurance by inserting a sewer camera toconfirm the liner is fully deployed and provides access toeffectively remove resin slugs.7
45、.1.4 Plugging the MainWhen required, the main pipeflows will be bypassed. The pumping system will be suffi-ciently sized for normal to peak flow conditions. The upstreammanhole is monitored at all times and an emergency deflatesystem will be incorporated so that the plugs may be removedat any time w
46、ithout requiring confined space entry7.1.5 Inspection of PipelinesThe interior of the pipelineshall be carefully inspected to determine the location of anycondition that shall prevent proper installation, such as rootsand collapsed or crushed pipe. These conditions shall be notedso that they can be
47、corrected before installation of theMLCIPL. Experienced personnel trained in locating breaks,obstacles, and service connections by closed circuit televisionshall perform inspection of pipelines.7.1.6 Line ObstructionsThe existing service lateral shallbe clear of obstructions to ensure proper install
48、ation. Obstruc-tions may include dropped or offset joints of no more than20 % of the inside pipe diameter.7.2 Transition of Pipe DiameterChanges in pipe diametershall be accommodated by properly sizing the lateral tubeaccording to the design of Practice F1216 for pipe diameter andconditions.7.3 Resi
49、n ImpregnationThe lateral tube and main sheetencapsulated within the translucent bladder (liner/bladder as-sembly) shall be vacuum-impregnated with resin (wet-out)under controlled conditions. The volume of resin used shall besufficient to fill all voids in the textile lining material atnominal thickness and diameter. The volume shall be adjustedby adding 5 to 10 % excess resin for the change in resinvolume due to polymerization and to allow for any migrationof resin into pipe defects and open joints in the host pipe inaccordance with Practice F1216. No dry or u
