Pressure Testing of Gravity Sewer Pipelines

• Document No.

• Part No.

• Revision No.

• Client Name

• Project Name

• Inspection Started

  Date

• Prepared by

• Location
  Address

• Drawings Supplied

  Yes

  No

  N/A

• Drawing Number

• Drawing Revision

• Drawing Date

  Date

• Drawing Approval RPEQ

• Specifications Required

  Select SEQ Water Supply and Sewerage D&C Code Water Services Association AS/NZS 3500 Plumbing & Drainage Queensland Urban Utilities Gold Coast City Council Logan City Council Ipswich City Council Redland Shire Council Tweed Shire Council Ballina Shire Council Byron Shire Council Lismore City Council Project Specifications

  • SEQ Water Supply and Sewerage D&C Code
  • Water Services Association
  • AS/NZS 3500 Plumbing & Drainage
  • Queensland Urban Utilities
  • Gold Coast City Council
  • Logan City Council
  • Ipswich City Council
  • Redland Shire Council
  • Tweed Shire Council
  • Ballina Shire Council
  • Byron Shire Council
  • Lismore City Council
  • Project Specifications

• Pipeline Construction Type

  Select Unplasticised PVC Glass Reinforced Plastic Polypropylene Ductile Iron Cement Lined Mild Steel Cement Lined Vitrified Clay Reinforced Concrete Polycrete Polyethylene

  • Unplasticised PVC
  • Glass Reinforced Plastic
  • Polypropylene
  • Ductile Iron Cement Lined
  • Mild Steel Cement Lined
  • Vitrified Clay
  • Reinforced Concrete
  • Polycrete
  • Polyethylene

• Test Method Northern Rivers Local Government Development Construction Specification, Clause C402.43
  
  Initial Pressure = 35kPa
  Settle Time = 3 Minutes
  Test Pressure = 35kPa
  Hold Time = As per Clause C402.44
  Allowable Loss in Nominated Timeframe = 7kPa

• Pipelines to be Tested

Pipeline

• Pipeline Identification Details

• Pipeline Diameter

  Select 100mm diameter 150mm diameter 225mm diameter 250mm diameter 300mm diameter 375mm diameter 400mm diameter 450mm diameter 525mm diameter 600mm diameter 675mm diameter 750mm diameter 900mm diameter 1000mm diameter 1050mm diameter 1200mm diameter 1500mm diameter Other

  • 100mm diameter
  • 150mm diameter
  • 225mm diameter
  • 250mm diameter
  • 300mm diameter
  • 375mm diameter
  • 400mm diameter
  • 450mm diameter
  • 525mm diameter
  • 600mm diameter
  • 675mm diameter
  • 750mm diameter
  • 900mm diameter
  • 1000mm diameter
  • 1050mm diameter
  • 1200mm diameter
  • 1500mm diameter
  • Other

• Pipeline Length (m)

• Accept the pipeline under test if the test pressure loss is =/<7kPa in 3 MINUTES

• Consider retesting in shorter lines as this length is outside the Specifications

• Pipeline Length (m)

• Accept the pipeline under test if the test pressure loss is =/<7kPa in 6 MINUTES

• Consider retesting in shorter lines as this length is outside the Specifications

• Pipeline Length (m)

• Accept the pipeline under test if the test pressure loss is =/<7kPa in 8 MINUTES

• Consider retesting in shorter lines as this length is outside the Specifications

• Pipeline Length (m)

• Accept the pipeline under test if the test pressure loss is =/<7kPa in 11 MINUTES

• Consider retesting in shorter lines as this length is outside the Specifications

• Pipeline Length (m)

• Accept the pipeline under test if the test pressure loss is =/<7kPa in 14 MINUTES

• Consider retesting in shorter lines as this length is outside the Specifications

• Pipeline Length (m)

• Accept the pipeline under test if the test pressure loss is =/<7kPa in 17 MINUTES

• Consider retesting in shorter lines as this length is outside the Specifications

• Refer to WSA02-2002-2.3 Table 22.4 to extrapolate test hold time

• Actual Pipeline Diameter

• Pipeline Length (m)

• Nominate Extrapolated Hold Time

• RESULT

  PASS

  FAIL

• Pipeline Construction Type

  Select Unplasticised PVC Glass Reinforced Plastic Polypropylene Ductile Iron Cement Lined Mild Steel Cement Lined Vitrified Clay Reinforced Concrete Polycrete Polyethylene

  • Unplasticised PVC
  • Glass Reinforced Plastic
  • Polypropylene
  • Ductile Iron Cement Lined
  • Mild Steel Cement Lined
  • Vitrified Clay
  • Reinforced Concrete
  • Polycrete
  • Polyethylene

• Test Method Tweed Shire Council Development Construction Specification, Clause C402.43
  
  Initial Pressure = 35kPa
  Settle Time = 3 Minutes
  Test Pressure = 35kPa
  Hold Time = As per Clause C402.44
  Allowable Loss in Nominated Timeframe = 7kPa

• Pipelines to be Tested

Pipeline

• Pipeline Identification Details

• Pipeline Diameter

  Select 100mm diameter 150mm diameter 225mm diameter 250mm diameter 300mm diameter 375mm diameter 400mm diameter 450mm diameter 525mm diameter 600mm diameter 675mm diameter 750mm diameter 900mm diameter 1000mm diameter 1050mm diameter 1200mm diameter 1500mm diameter Other

  • 100mm diameter
  • 150mm diameter
  • 225mm diameter
  • 250mm diameter
  • 300mm diameter
  • 375mm diameter
  • 400mm diameter
  • 450mm diameter
  • 525mm diameter
  • 600mm diameter
  • 675mm diameter
  • 750mm diameter
  • 900mm diameter
  • 1000mm diameter
  • 1050mm diameter
  • 1200mm diameter
  • 1500mm diameter
  • Other

• Pipeline Length (m)

• Accept the pipeline under test if the test pressure loss is =/<7kPa in 3 MINUTES

• Consider retesting in shorter lines as this length is outside the Specifications

• Pipeline Length (m)

• Accept the pipeline under test if the test pressure loss is =/<7kPa in 6 MINUTES

• Consider retesting in shorter lines as this length is outside the Specifications

• Pipeline Length (m)

• Accept the pipeline under test if the test pressure loss is =/<7kPa in 8 MINUTES

• Consider retesting in shorter lines as this length is outside the Specifications

• Pipeline Length (m)

• Accept the pipeline under test if the test pressure loss is =/<7kPa in 11 MINUTES

• Consider retesting in shorter lines as this length is outside the Specifications

• Pipeline Length (m)

• Accept the pipeline under test if the test pressure loss is =/<7kPa in 14 MINUTES

• Consider retesting in shorter lines as this length is outside the Specifications

• Pipeline Length (m)

• Accept the pipeline under test if the test pressure loss is =/<7kPa in 17 MINUTES

• Consider retesting in shorter lines as this length is outside the Specifications

• Refer to WSA02-2002-2.3 Table 22.4 to extrapolate test hold time

• Actual Pipeline Diameter

• Pipeline Length (m)

• Nominate Extrapolated Hold Time

• RESULT

  PASS

  FAIL

Confirm Project Information

• Pipelines to be inspected and their details

• Testing specification requirements

Initial Work Area Inspection

• Is test area barricaded off or sufficiently delineated?

  Yes

  No

  N/A

• Is traffic control established?

  Yes

  No

  N/A

• Has a Safe Work Method Statement been completed and all control measures followed?

  Yes

  No

  N/A

• Has a Confined Space Risk Assessment & Entry Permit been completed?

  Yes

  No

  N/A

• Is the confined space equipment and procedures set up as per the Risk Assessment & Entry Permit conditions followed?

  Yes

  No

  N/A

• Structure lids removed and placed at a safe distance from the entry point

• Environmental controls installed as and if required

Inspection Steps

• Equipment checked and in good working order

  Yes

  No

  N/A

• Insert test plugs into the structure inlets with extendable pole if possible

• Inflate plugs and add support as per manufacturer's specifications

• Attach bypass plug to compressor and pressurise pipeline to test pressure

• Allow for pressure to stabilise for an amount of time as per specifications

• Hold pressure for time specified in specifications and record result

Disassemble Steps

• Disconnect hose from compressor and release pressure from pipeline

• Release pressure from plugs and carefully retrieve plugs out of structure

• Replace structure lids, remove barricading and return all items to test unit

Final Demobilisation

• Notify client of results and to contact TestX office to arrange further testing or reports

• Calibrated gauge numbers used

• Inspector's remarks

• Photo of work area and inspected pipeline

  Media

• I declare that the inspection procedure was followed in accordance with the nominated specifications

  Sign

• Inspection Completed

  Date

• Report Issue Date

Report Approval - Cam Reid