Fast Weld Field Trials, High Productivity Butt Fusion Jointing of PE Pipes [PE]
Reynolds, Jenkins, Burgess, Attwood
# 1998 Gothenburg
The Butt Fusion procedures used in the UK
Water and Gas industries, which determine
the total time taken to complete a successful
joint, have remained largely unchanged
since their harmonisation in 1990. The
parameters evolved to suit manually
operated Butt Fusion machines and
reflected the fact that the minimum
achievable heater plate removal time, for up
to 250mm diameter, was between 6 and 8
seconds, during which the operator had to
manually operate a hand pump to remove
With standardisation of Automatic Butt
Fusion, and typical heater plate removal
times of 2 seconds, potential exists to
considerably reduce on-site jointing time,
and thus unlock substantial financial
produced with short heater-plate removal
Until recently, the butt fusion welding
profiles used throughout the PE pipeline
industry have been specified by the
appropriate governing body (e.g. British
Gas, DVS, UK Water Industry, GPP etc).
However, industry, evermore financially
aware, is now more receptive to "fitness
for purpose" products and projects such as
"Fast Weld" are being encouraged.
Tests detailed in this paper cover a
selection of PE80 pipe sizes and SDR in
the range 90mm to 400mm as a
continuation of the work detailed in the
paper titled "High Productivity Butt Fusion
Joining of Polyethylene Pipes" 1995.
Cartwright et a1 (5).
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