Nurturing the Young –

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Events and Activities

Technical seminar on polyethylene pipe systems and their applications in water mains replacement and rehabilitation

Date, time & venue 

Programme highlights
Polyethylene (PE) has gained significant respect as a pipeline material over the last 30 years. Polyethylene's flexibility for its use in new and rehabilitation applications makes it the fast growing pipeline material globally. However, without correct design, application and control of specifications, PE, like all other pipeline materials is prone to premature failure. This seminar will highlight key areas such as installation methods, jointing, system and pipe testing, and failure modes and the details are as follows :
Pipe installation methods: (20 min) 
- Rehabilitation techniques 
- Pipe cracking: overview of current techniques and how to select
- Pipe splitting: the appropriate method to use and why
- Insertion: comparison with PVC systems
- Pipe roll down and swaging

Pipe Jointing methods: (10 min)
- Butt fusion: advantages/disadvantages, specifications
- Electro fusion: advantages/disadvantages, specifications
- Data logging: how it is done and what it achieves
- Flange jointing: stubb flanges, slim line flanges, backing rings
- Mechanical joints: how and why they work - key points to specify
- Resin welding compatibility: why resin and product specifications are critical

System testing requirements: (10 min) 
- Pipe weld testing: tensile weld tests, frequency and necessity
- OIT testing: oxygen induction time testing - ductility
- Sectional testing: in ground hydrostatic pipe testing

PE failure modes: (20 min)
- Examples of failures: common system failures to avoid, caused by poor product quality and specification.

Mr Daryl Mason of Prebensen Pipelines and Mr Ian Jacob Tyco Waterworks Asia

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