I&I Mitigation: Reconstruction of Sewer Laterals and Sealing the Connections to the Main Rick Gage

Transcription

1 I&I Mitigation: Reconstruction of Sewer Laterals and Sealing the Connections to the Main Rick Gage Vice President, Business Development LMK TECHNOLOGIES 1

2 Discussion Points System Rehabilitation Overview The Evolution of Lateral Linings ASTM F Standard Practice Accessing the Lateral through an Outside Clean Out Materials Sealing the Annular Space between the Main and Host Pipe Inserting, Inflating and Inverting the Liner Curing and Final Inspection 2

3 Failing Mainline Pipes 3

4 Mainline CIPP Only 4

5 Mainline CIPP and End Seals 5

6 Mainline with CIPP 6

7 Discussion Points System Rehabilitation Overview The Evolution of Lateral Linings ASTM F Standard Practice Accessing the Lateral through an Outside Clean Out Materials Sealing the Annular Space between the Main and Host Pipe Inserting, Inflating and Inverting the Liner Curing and Final Inspection 7

8 A Brief History 1 st Generation 2 nd Generation 3 rd Generation 4 th Generation ASTM F th Generation ASTM F

9 1st Generation Just Renew the Lateral No Seal at the Connection 9

10 2nd Generation Systems advanced modifying the lower end of lateral linings to include a hat or brim style junction This design was intended to seal by gluing the brim to the inner side of the main pipe Concerns: Bonding Resistance to Buckling Distance of Lateral Lining Seal is 100% dependent on adhesion 10

11 2 nd Generation Hat or Brim Style Connection 11

12 2 nd Generation Challenge of Adhesion 12

13 2 nd Generation Service Life of Adhesion 13

14 2nd Generation Repair Process 14

15 3rd Generation Cylindrical Main Connection (360º) Structural design per Appendix X1 of ASTM F1216 Resist Buckling 15

16 3 rd Generation with Mainline CIPP 16

17 A Brief History 3 rd Generation Not Complete 1 st Generation 2 nd Generation 3 rd Generation Need for Advancement in Technology Need for Standardization to Ensure Service Life Results 17

18 Design of Test Equipment Minimum Criteria Capable of testing multiple types of CIPP linings Capable of allowing for the nondestructive testing of a sample Capable of non destructive removal of connection sample from testing apparatus Capable of regulating external hydrostatic pressure Real time pressure monitoring Allows for unobstructed installation of all types of known trenchless junction rehab methods CAD rendering of Hydrostatic Test Tank 18

19 19

20 CIPP Connection Silicate Resin and No Gaskets 20

21 Challenge of 2 nd and 3 rd Generations ADHESION 21

22 4 th Generation = ASTM F Added Feature: Swelling Gaskets Two O Rings on both sides of the Connection Made of Hydrophilic Rubber 22

23 ASTM F : A TRUE Trenchless Alternative To Dig And Replace USA Canada Mexico Denmark Germany Sweden Singapore 23

24 4 th Generation with Mainline CIPP Compliant with ASTM F

25 A Brief History 1 st Generation 2 nd Generation 3 rd Generation 4 th Generation ASTM F th Generation ASTM F

26 No Gasket at Lateral Termination 26

27 5th Generation = ASTM F Added Feature: Hydrophilic O Ring at Upper End of Lateral 27

28 5 th Generation Compliant with ASTM F

29 Discussion Points System Rehabilitation Overview The Evolution of Lateral Linings ASTM F Standard Practice Accessing the Lateral through an Outside Clean Out Materials Sealing the Annular Space between the Main and Host Pipe Inserting, Inflating and Inverting the Liner Curing and Final Inspection 29

30 ASTM F Standard Practice for Rehabilitation of a Sewer Service Lateral and its Connection to the Main Using a One Piece Main and Lateral Cured in Place Liner. Incorporates ASTM F1216, D2990, D790 & D5813 ASTM F Standard Practice for Rehabilitation of Existing Pipelines and Conduits by the Inversion and Curing of a Resin Impregnated Tube ASTM D Standard Test Methods for Tensile, Compressive, and Flexural Creep and Creep Rupture of Plastics ASTM D Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials ASTM D (2012) Standard Specification for Cured In Place Thermosetting Resin Sewer Piping Systems 30

31 Discussion Points System Rehabilitation Overview The Evolution of Lateral Linings ASTM F Standard Practice Accessing the Lateral through an Outside Clean Out Materials Sealing the Annular Space between the Main and Host Pipe Inserting, Inflating and Inverting the Liner Curing and Final Inspection 31

32 Why AN Outside Clean-Out? Per ASTM F2561 Lateral line cleaning before lining per NASSCO Guidelines Remove roots/ debris before lining Ensure pipe is able to be lined Verify diameters, lengths and transitions Can protect home from odors by plugging upstream side Reduce risk by preventing homeowner flushing which can cause premature curing Reduce costs Ensure no resin slugs Ensure liner is fully deployed Allows post CCTV inspection 32

33 Install Clean-Out without Digging Technology exists to install a clean out without excavation using VAC A TEE A PVC saddle snapped onto a Lateral pipe through a 16" to 20 diameter hydro or vacuum excavated bore hole No digging No shoring No man entry No damage to adjacent utilities No damage to landscaping Small bore hole versus open trench Minimal disruption and restoration No spoils left in the yard 33

34 Locate Lateral Camera launched from the main to locate where the cleanout will be installed Locating Sonde camera 34

35 Vacuum Excavation in Close Quarters 35

36 Saddle Attached to Riser Pipe Depth measurement taken Riser pipe cut and saddle attached Adhesive applied to saddle 36

37 Saddle is Snapped on to the Pipe Bore hole filled w/sand Riser pipe filled w/water Leak test is performed Crown of pipe is cut Same Day Restoration Sod is replaced 37

38 VAC-A-TEE Accessories Lateral Access Shoe Root and Debris Cutting Equipment Can be inserted either upstream or downstream 38

39 Discussion Points System Rehabilitation Overview The Evolution of Lateral Linings ASTM F Standard Practice Accessing the Lateral through an Outside Clean Out Materials Sealing the Annular Space between the Main and Host Pipe Inserting, Inflating and Inverting the Liner Curing and Final Inspection 39

40 Tube and Sheet 40

41 ainline Connection T OR Y

42 cuum Impregnation r ASTM F1216 Performed On Site by Trained Certified Installers

43 scussion Points System Rehabilitation Overview The Evolution of Lateral Linings ASTM F Standard Practice Accessing the Lateral through an Outside Clean Out Materials Sealing the Annular Space between the Main and Host Pipe Inserting, Inflating and Inverting the Liner Curing and Final Inspection

44 aling the System Wrapping Mainline Sheet with Hydrophilic O rings ASTM F2561 The Design Calculations for the Main & Lateral Tube shall assume no bonding to the host pipe.

45 scussion Points System Rehabilitation Overview The Evolution of Lateral Linings ASTM F Standard Practice Accessing the Lateral through an Outside Clean Out Materials Sealing the Annular Space between the Main and Host Pipe Inserting, Inflating and Inverting the Liner Curing and Final Inspection

46 cessing the Lateral Clean-Out

47 sitioning the Liner The main is renewed with an 18 inch long cylinder shaped main liner simultaneous with the lateral lining

48 scussion Points System Rehabilitation Overview The Evolution of Lateral Linings ASTM F Standard Practice Accessing the Lateral through an Outside Clean Out Materials Sealing the Annular Space between the Main and Host Pipe Inserting, Inflating and Inverting the Liner Curing and Final Inspection

49 eam Cure As Quick As 30 Minutes Lower cost Very thorough cure Increased production Minimal homeowner disruption

50 dder Tube Removal & Post Video Lateral Camera from Outside Clean Out

51 teral Indicia 00 Pennsylvania Ave NW talled by Certified Contractor iner by LMK Cx3Bx13Cx5SKxT/PU LMK656 2,.2

52 ng-term Testing of Molded Hydrophilic bber Made of Neoprene esting protocol was developed to gauge the performance of he molded seals in a simulated sewer pipe his led to the initiation of a 10,000 hour test Molded seals are subjected to alternate hydration and dehydration Measured for dimensions as well as weight when dry and wet ycles recorded 2, 7, 30, 90, 180 and 416 days

53 ng-term Testing Results he hydrophilic gaskets maintain their expansion properties when ubjected to alternate hydration and dehydration ble to retain expansion of at least 4% or higher when subjected to ehydration etain moisture even when dehydrated over periods as long as 3 onths isually the seals do not show any degradation or loss of material hen dehydrated aintain flexibility and demonstrate excellent surface properties ithout loss of material even after multiple hydration/ dehydration ycle

54

55 ASE STUDIES

56 Naperville lem: Infiltration & inflow issues caused by extraneous flows from ing sewers/laterals during wet weather events, exacerbated by ulation increase (more homes/more people) tion: Lined more than 65 miles of sanitary sewer mains since 1992, and e than 3,000 sewer service laterals since 2003 utilizing LMK technology lts: lanned multi million dollar wastewater treatment plant expansion was eferred as a result of creating more system capacity by sealing the nitary sewer system (see below) ity is benefitting from greatly reduced maintenance costs, fewer resident omplaints about sewer backups and lower energy costs to run the astewater plant due to renewing and sealing the sewer collection stem

57 w Castle County, DE

58 Collection System After Mainline and Main to Lateral Renewal nt: City of Fort Saskatchewan inline CIPP Installer: IVIS, Inc. #1: 8 X 4 X #2: 8 X 4 X 90

59 mmary VAC A TEE is an accepted solution for creating an outside clean out by many municipalities Cured in Place Liners do not bond, but if they do for how long? To maximize I&I reduction utilize ASTM F2561 For connection sealing, you must start with a structural liner To create a water tight seal with CIPP, you must use a compression gasket

60 uestions? &I Mitigation: econstruction of Sewer Laterals and ealing the Connections to the Main Rick Gage Vice President, Business Development LMK TECHNOLOGIES