Developing a Pressure Sewer System in the Pacific Region

1. Welcome

2. How to develop, implement and maintain a pressure sewer system in the Pacific region

4. What is a pressure sewer system? A Short 2 minute Video to help explain how it works

5. The 8 phases to implementing a pressure sewer system: • Identification of the problem and internal review of a suitable sewerage system • Feasibility study and project cost estimate • Development of Policy and legislation • Procurement • Detailed design • Construction • Operations & Training • System reviews post completion

6. Phase 1: Identification of the problem and internal review of a suitable sewerage system

7. Identification of the problem

8. Basic collection system comparison chart Good-Better-Best

9. Collection System Considerations • Groundwater level and dewatering requirements • Contaminated soils and toxic run off to the environment • Amount of rock to be excavated based on depth as part of a new sewerage network • Existing infrastructure to avoid during construction: power, phone, fibre optic, water mains, hard stand roads and foot paths • Distance and topography between collection area and treatment plant • Complexities of property connections • Disruption to traffic both local and major roads • Level of communication and agreeance with local village elders and communities • Land acquisitions for major assets (treatment plant, major pump stations) • CapEX and CapOP cost comparison via industry research

10. What System is the Viable Option for You? ?

11. Phase 2: Feasibility Study and Project Cost Estimate

12. Local Tender for Feasibility • Utilise Local Knowledge – Engage a local Consultant • Review the Research to date • Stay involved with the review

13. Scheme Boundary

14. Concept Layout

15. Ultimate ET’s How many commercial, industrial or residential connections? Remember Future Areas or Stages

16. Consultation Other Government Agencies 3rd Party Stake Holders Developers and Business Owners

17. Concept Finalisation detailed design tender package preparation concept layout, ultimate ET’s, scheme boundary, future areas to be serviced, stages to be built, environmental constraints, total number of residential and commercial connections.

18. Project Concept Budget Estimate PROJECT HOLD POINT $9,500.00USD to $15,000.00USD per connection

19. Phase 3 Development of Policy and legislation

20. • Ownership – who will own and maintain the onsite asset? • • Easements – Typically a sewerage system requires easement? • • Standards – A review of industry standards and adoption of certain codes • WSA 02 – 2002 – 2.3 Sewerage Code of Australia • WSA 07 – 2007 Pressure Sewer Code of Australia Version 1 • WSA 01 – 2004 Polyethylene Pipeline Code 3rd Ed Version 3.1 • AS2033 – Installation of Polyethylene Pipeline Systems • AS4130 - Polyethylene Pipe • AS4131 – Polyethylene Fittings • AS3000 – Wiring Rules • AS3500 – Plumbing and Drainage Code of Australia • • Sewerage Charges – What will you charge to met your obligations? • Power Connection – Where will the power source come from? • • Application – Where will pressure sewer be used? • • Equality – Standardizing the approach of servicing with pressure sewer? • • Service Standards – How will you service your customer base?

21. Phase 4 Procurement

23. Pressure Sewer Equipment Considerations • Service life of the product • • Broad range of systems to manage with different types of connections • • Supply of spare parts • • Training to repair equipment on island • • Technical support • • Ease of product servicing • • Robust design and build • • Manufacturer’s warranty • • Capital Expense

24. Industry Contacts with Pressure Sewer Systems Samoa Water Authority – Samoa Yarra Valley Water – Victoria, Australia Gippsland Water - Victoria, Australia Bega valley Shire Council – NSW, Australia Sydney Water - NSW, Australia Clarence Valley Shire Council - NSW, Australia South Australia Water – South Australia, Australia Caboolture City Council – QLD, Australia Carpentaria Shire Council – QLD, Australia

25. TENDER OPTIONS Design and Supply Vs Supply and Construct Supply Only Tender

26. Phase 5 Detailed Design

27. Detailed Design Package Tasks • Street main alignment and set out • Survey of alignment • Pipe sizing and modelling • Property Design • Plumbing and Electrical system dilapidation reporting • Project Estimate • Environmental studies

28. Detailed Design Documents Package inclusions • • Detailed Street main drawing set with valves, flushing points • • A folio of property plans showing the scope of works • • Schedules of materials for street mains and on property works • Schedule of pump stations sizes • • Schedule of non-compliant systems • • Design report showing system performance • • Environmental studies if required

29. Phase 6 Construction

30. Tender Open Walk the alignment Look at the sites

31. Project Assistance: • Installation training by the equipment manufacturer • Design consultation due to changes made by other parties • A Directional drilling contractor • System testing and commissioning including 3rd party quality control Consultants engaged to assist progress are: • Quality control auditing • Specialized construction teams such as directional drilling • Testing and commissioning of the system Start Thinking About Operations and Maintenance Get Operational Staff into the field during construction

32. Construction Expectation 100m per day in average ground conditions One complete property connection per day

33. Phase 7 Operations & Training

34. Operations & Training Suggested team member skill sets include: • Electrical industry • Plumbing industry • Water network worker

35. Service Team

36. Training

37. Reporting Documents that report on: • Service call data – what was changed, repaired or reset • Commissioning data – when did the new pump get installed and commissioned • Workshop repair data – how was that pump repaired and by whom

38. S.O.Ps Standard operating procedures • Pump core replacement • Control panel fault diagnosis • Pressure testing • Pump core refurbishment • Electrofusion welding mains repair

39. Basic service protocols • Time between receiving call and attending site • How to approach the customer onsite when first attending • How long can the customer be offline without the service working

40. Data Collection & Storage

41. Equipment List Field Work Pump trolley Tripod pump core removal Stop valve key Boundary valve key Flushing point valve adaptor to educt truck hose Socket set Screw driver set Multi meter with clamp Protective equipment Service vehicle (truck)

42. Phase 8 System Review Post Completion Watch Out for the Project Hang Over

43. Watch out for the information hand over at the end of Construction

44. Post Completion Review and Defects

45. Post Completion Review • Additional capacity within the system that was not designed for under the detailed design phase • Areas of reticulation that are not achieving scouring velocity and as such delivering poorer quality of sewerage to the disposal point • Pump station actual performance Vs manufacturer’s performance • Defects from construction identification • Review of operational tasks and processes • Additional training identified and carried out

46. System Check Up

47. System Check Up

48. Presentation Summary Phase 1 - Identification of the problem and internal review of a suitable system Phase 2 - Feasibility study and project cost estimate Phase 3 - Development of Policy and legislation Phase 4 - Procurement Phase 5 - Detailed Design Phase 6 - Construction Phase 7 - Operations & Training Phase 8 - System Review post completion

49. Thankyou and Questions PSSA’s stand is located at Booth 23 in the hall. We have a vast array of information packages available as well as equipment samples that demonstrate how a pressure sewer system works. I will be available to answer any specific questions or provide more information during the length of this conference so please drop by and see me