• Document No.

  • Audit Title

  • Client / Site

  • Conducted on

  • Prepared by

  • Location
  • Personnel

  • Project No:

  • Catchment:

  • Sub Catchment:

  • CIZ No.

1. Planning and Approvals

  • All Plans/Permits valid and onsite - ie. Power Company, Council or VicRoads MOA

  • Select date

  • Checked By

2. Construction Documentation

  • SWMS relevant for specific site and activities

  • Flushing Point constructed as per Standard Drawings SEW_PSS_004 or SEW_PSS_008

  • Isolation Valve constructed as per Standard Drawing SEW_PSS_003

  • Excavation Permit

  • Confined Space Entry Permit

  • Valid Q form

  • Select date

  • Checked By

3. Construction Plant and Equipment

  • Daily pre-start checklists completed for all plant

  • CSE equipment satisfactory

  • Plugs (not damaged)

  • Hoses (no leaks)

  • Select date

  • Checked By

4. Service Location and Protection

  • "Dial Before You Dig" information <br>

  • All known existing services have been located and proved prior to work commencing

  • Minimum clearance maintained as per WSA 07-2007 or WSA 02-2002

  • Select date

  • Checked By

5. Traffic Management

  • Set up as per site Traffic Management Plan

  • Works within specified road access time periods as stated in relevant MOA

  • Select date

  • Checked By

6. Inspection of Materials

  • Pipe and fittings conform to specifications and are in new condition<br><br>As per standard drawing:<br><br>- SEW_PSS_003/PSS-1010-M Typical Isolation Valve Installation<br>- SEW_PSS_004 Flushing Point - Trafficable<br>- SEW_PSS_008/PSS-1012-M Flushing Point

  • Min PN16/SDR11, PE 100 and 316 SS Fittings

  • Valve/s clockwise closing

  • 3mm gasket in good condition

  • Select date

  • Checked By

7. Establish Environmental Controls (as per EMP)

  • Silt fencing set up where required

  • Silt traps employed where required

  • Parawebbing erected around protected trees/vegetation

  • Arborist onsite for excavation within a SRZ

  • Select date

  • Checked By

8. Excavation

  • Sufficient traffic management and signs around excavation

  • Adequate fall from heights protection installed where required

  • Spoil stored correctly or removed from site

  • Correct trenching and shoring methods used for excavations greater than 1.5m

  • Select date

  • Checked By

9. Isolation Valve Location

  • Ensure correct fittings and pit covers are used (Trafficable or non Trafficable)

  • Is this a bridge crossing? Valves required on either side of crossing

  • Flanges wrapped in blue plastic

  • Select date

  • Checked By

10. Flushing Pit Location

  • Ensure correct fittings and pit covers are used (Trafficable or non Trafficable)

  • Intermediate flushing point is a minimum 1000mm or 12 x diameter from valves (whichever is greater)

  • Select date

  • Checked By

11. Concrete Placement

  • Concrete placed in accordance with WSA-07-2007 Clause 14.6.5

  • Free fall is less than 1.6m

  • Concrete is immediately compacted after placing (ensure segregation off concrete ingredients does not occur)

  • Formwork remains in place until adequate concrete strength has been achieved

  • Select date

  • Checked By

13. Bedding of Pipe for Open Cut

  • Bottom of trench is free from sharp obstructions

  • Min 100mm compacted sand on bed of trench

  • Min 150mm compacted sand surrounding pipe

  • Marker Tape installed on top of bedding material (min 150mm above pipe)

  • Select date

  • Checked By

14. Compaction and Backfill

  • Backfill to MRWA Specification No. 04-03.1 or to Road Authority's requirements

  • The Road Authority's requirements shall take precedence if they exceed the requirements of the MRWA Specification.

    MRWA Specification for roadways:
    - up to 1.5m deep - 20mm Class 2 Plant Mixed Wet Mix Crushed Rock
    - Over 1.5m - top 600mm to be 20mm Class 2 Plant Mixed Wet Mix Crushed Rock, 20mm Class 4 Crushed Rock for remainder.
    - Excavations in Footpaths - 20mm Class 4
    - Backfill placed in 200mm layers and compacted to required density 95% AS.

  • Compaction Test Report/s received

  • Select date

  • Checked By

15. Acceptance Testing

  • Pressure Testing for gravity system (vacuum or low air pressure testing)

  • Deflection testing (to be done 14 days after compaction has been completed)

  • CCTV received and satisfactory

  • Select date

  • Checked By

16. Reinstatement

  • Construction Impact Zones and affected work areas restored to condition prior to commencement of works

  • All surplus material removed from site

  • Select date

  • Checked By


South East Water Representitive

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