LAC 43:XIII.2133. Atmospheric Corrosion Control: Monitoring [49 CFR 192.481]

A. Each operator must inspect each pipeline or portion of pipeline that is exposed to the atmosphere for evidence of atmospheric corrosion, as follows. [49 CFR 192.481(a)] If the pipeline is located: | Then the frequency of inspection is: Onshore other than a service line | At least once every 3 calendar years, but with intervals not exceeding 39 months. Onshore service line | At least once every 5 calendar years, but with intervals not exceeding 63 months, except as provided in Subsection D of this Section. Offshore | At least once each calendar year, but with intervals not exceeding 15 months. B. During inspections the operator must give particular attention to pipe at soil-to-air interfaces, under thermal insulation, under disbonded coatings, at pipe supports, in splash zones, at deck penetrations, and in spans over water. [49 CFR 192.481(b)] C. If atmospheric corrosion is found during an inspection, the operator must provide protection against the corrosion as required by §2131. [49 CFR 192.481(c)] D. If atmospheric corrosion is found on a service line during the most recent inspection, then the next inspection of that pipeline or portion of pipeline must be within 3 calendar years, but with intervals not exceeding 39 months. [49 CFR 192.481(d)]