Supporting Processes

02 / 07 / 15Pipe Assembly and Handling

PE100 pipe can be supplied in coils up to DN180. For all diameters that are too large to be supplied in coils the pipe will be supplied to site in straight lengths. These will be butt fusion welded...

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02 / 07 / 15Installation Manual

The four ISO systems Standards, ISO 11296-11299 cover plastic pipes in renovation of gravity sewerage, pressure sewerage, water and gas supply respectively. Each requires that an installation manual...

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02 / 07 / 15Host pipe cleaning & inspection

Close-fit Lining Methods Whilst restoring the internal diameter is not critical for slip lining, it is critical if a close fit or tight fit technique is to be used. The host pipe must be thoroughly...

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01 / 07 / 15End fittings

Trenchless installation and rehabilitation techniques that use standard PE100 pipes also use standard end fittings to connect to other pipe materials. These may be fused or mechanical fittings...

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02 / 07 / 15Testing & Inspection

On completion of the trenchless installation or rehabilitation works using PE100 the works must be inspected and tested. This inspection and testing follows the normal procedures of the customer. No...

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01 / 07 / 15Piecing Up

Apart from slip lining, the three techniques for rehabilitating large diameter mains with PE liner pipe are die drawing, rolldown, and folding, and in these three cases the liner pipe termination...

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02 / 07 / 15Excavations & pit sizes

For all trenchless methods, both new installation and rehabilitation, it is necessary to excavate at each end of the works to reach the working depth for installation or the host pipe for...

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02 / 07 / 15Isolation

Any rehabilitation or replacement works on pressure mains require the sections of main being rehabilitated or replaced to be isolated from the system. Procedures for isolation when using any of the...

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