Sewerage Pumping Station SP1197, Pressure Main and Receiving Gravity Sewer
Mechanical, Civil and Structural Detailed Design
EPES were engaged by Zinfra as Sydney Waters D&C contractor for the design and construction of SP1197 sewerage pumping station, pressure main and receiving gravity sewer at Emerald Hills in the South West Growth Centre, Leppington NSW.
Design package included:
1. 71L/s Sewage pumping station consisting of two sets of submersible pumps, precast wet well, valve chamber, inlet maintenance hole, outdoor electrical kiosk, bypass pumping arrangement, emergency storage tank, chemical dosing unit and associated works
2. Pressure main consisting of 1,130m of DN315 HDPE pipe including scours, jetting points and associated works
Project Information
Location: South West Growth Centre, Leppington, New South Wales, Australia
Client: Zinfra c/o Sydney Water
Engagement: Detailed Design Consultant
Sectors: Industrial, Water and Waste Water
Services: Construction and Design Consulting, Digital Engineering, Infrastructure Engineering, Piping Engineering, Water and Waste Water
Year: 2015-2017
3. Receiving gravity sewer consisting of 1,770m of DN355 HDPE pipe draining to the receiving maintenance hole
The scope of the works included all mechanical, civil and structural design elements including development of various approval documentation including Design Management Plans, Safety in Design, CHAIR, FMECA and various design reviews with Sydney Water management and operations teams.
Design deliverables were prepared following tendered Concept Design through 30% and 80% Detailed Design, Workshop Coordination and Works-as-Constructed (as Approved by Sydney Water). Site inspections during construction.
The Problem
Several challenges were identified during the design delivery effort, such as:
- Coordination of requirements with Operations teams and Management
- Errors in the tendered concept design ground levels and site access
- Issues with DTC drawings requiring redesign
- Time pressures due to advancing residential developments
We were also tasked with ensuring that the information we produced was coherent, organised and in a suitable format to be integrated into AFMOnline.
Analysis and Implementation
Ongoing and regular communication with stakeholders enabled issues to be raised as early as possible, with an agreed path to resolution. Identifying key concerns and risks in the design enabled the design to take a pragmatic approach with buy-in.
Outcome
The project has been operational since 2017 with no technical issues identified.
Using experienced technical staff and ensuring that communication channels are always open presents an opportunity to deliver a challenging project with final acceptance. Long term reliable operation follows diligent design.
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