· Rehab, Water, Industry, Transport line, Canada, British Columbia
Situation
The operator identified leakages in a treated refinery waste water pipeline. This was the result of a significant amount of chlorine that had to be added to the transported waste water in order to comply with the district’s odor requirements. Local repairs with clamps were executed on a regular basis, however, at this point the pipe was due for overall rehabilitation.
It was decided to select a relining solution for replacement could not be considered an option: A new carbon steel pipe was not applicable due to the high level of corrosion, any HDPE or PVC materials were ruled out due to the risks of thermal expansion.
Technical details
Material of host pipe
Carbon steel
Diameter of host pipe
6"
Transported fluid
Chlorine treated refinery waste water
Operating pressure
200 psi
Total length
215 m
Number of sections
1 section
Number of bends
Not applicable
Installation time
1 day
despite the characteristics of the transported fluid
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