Following the detailed examinations at the four selected sites, the auto-UT scans were analysed and evidence of low level, isolated internal corrosion pits were observed at one of the four sites. The low level corrosion pits were evaluated to be insignificant in severity in relation to the integrity of the pipeline and annual monitoring at the auto-UT sites was recommended to determine the rate of corrosion growth until the line can made piggable.
展开▼
