1、Designation:F230410Standard Practice forSealing of Sewers Using Chemical Grouting1This standard is issued under the fixed designation F2304;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parenth
2、eses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice describes the procedures for testing andsealing individual sewer pipe joints with appropriate chemicalgrouts using the packer method.Sewer sys
3、tems shall includesanitary,storm,and combined and their appurtenances.Chemi-cal grouting is a soil sealing process,which seals the voidswithin the soil surrounding the exterior of the pipe at the pointof leakage.Chemical grouting is not considered a structuralrepair.1.2 This practice applies to sewe
4、rs 6 to 42 in.(18 to 107 cm)in diameter.Larger diameter pipe may be grouted with spe-cialized packers or man entry methods.Host pipe interiorsurfaces must be adequate to create an effective seal for thepacker elements.1.3 The values stated in inch-pound units are to be regardedas standard.The values
5、 given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 Worker safety training should include reviewing thehazards associated with hoses,pumps,tanks,couplers,compressors,bottles,motors,and all other related applicationap
6、paratus.Additional safety considerations including safelyhandling,mixing,and transporting of chemical grouts shouldbe provided by the chemical grout manufacturer or supplier orboth.Their safe operating practices and procedures shoulddescribe in detail appropriate personal protective equipment(PPE)fo
7、r the various grouting operations.Operations coveredshould include the proper storage,transportation,mixing,anddisposal of chemical grouts,additives,and their associatedcontainers.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsi
8、bility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 NASSCO Standards:2NASSCO Specifications Guidelines Wastewater CollectionSystems Maintenance and RehabilitationNA
9、SSCO Specifications GuidelineSewer Line Clean-ing Wastewater Collections Systems Maintenance andRehab,Sewer Line CleaningNASSCO Specifications GuidelinesTelevision Inspection,Main Sewers Wastewater Collections Systems Mainte-nance and Rehab,Television Inspection,Main Sewers3.Summary of Practice3.1 T
10、he work required by this practice shall consist offurnishing all labor,materials,equipment and supervising andperforming all work necessary to rehabilitate the designatedsanitary or storm sewer lines or both,all in accordance with theprocedures.The work shall consist of,but not necessarily belimited
11、 to,performing the following tasks where specified:3.1.1 Sewer Line Cleaning,shall be performed with hydrau-lically propelled high-velocity jet or mechanically poweredequipment.Selection of equipment shall be based on fieldconditions such as access to manholes,quantity of debris,sizeof sewer,depth o
12、f flow,and so forth.NASSCO SpecificationsGuidelineSewer Line Cleaning section adequately addressesthe sewer line cleaning process in the current edition.3.1.2 Sewer Flow Control,shall be performed as required tocomply with this practice.3.1.3 Television Inspection,shall be required to reveal anddocu
13、ment sewer line conditions and be performed in advanceof or in conjunction with pipe joint testing and sealing sewerpipe joints.NASSCO Specifications GuidelinesTelevisionInspection,Main Sewers section adequately addresses sewerline television inspection processes in the current edition.3.1.4 Sewer P
14、ipe Joint Testing,shall be performed toidentify defective(infiltrating/exfiltrating)pipe joints and shallbe accomplished by applying a positive test pressure to eachindividual sewer pipe joint,monitoring the test pressure andany test pressure decay,or through visual observation of theleaking joint.3
15、.1.5 Sewer Pipe Joint Sealing,shall be accomplished bythe pressure injection of chemical grout(chemical sealing1This practice is under the jurisdiction of ASTM Committee F36 on Technologyand Underground Utilities and is the direct responsibility of Subcommittee F36.20on Inspection and Renewal of Wat
16、er and Wastewater Infrastructure.Current edition approved May 1,2010.Published July 2010.Originally approvedin 2003.Last previous edition approved in 2003 as F2304 03.DOI:10.1520/F2304-10.2Available NASSCO,1108 Sheller Ave.,Suite 5,Chambersburg,PA 17201.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 material)into the soils encompassing the pipe joint.Chemicalgrouts are designed to be injected into the soil surrounding thepipe,which s
