Coupons do seem to have come back into favour in recent years, but it has to be remembered that the coupons at best only give an indication of the likely corrosion protection of the pipe. With such a short length of pipeline it should be simple to switch the CP current and therefore obtain an...
The normally accepted UK criteria where pipeline is not piggable, (providing you have design/construction records that show fitness for purpose), is an overline survey to validate the effectiveness of the CP. 6 monthly monitoring and 4 yearly survey should satisfy the HSE. The pipeline should...
