Atmospheric Corrosion Control: Monitoring [49 CFR 192.481]

(A)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)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)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)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)]#

AUTHORITY NOTE: Promulgated in accordance with R.S. 30:501 et seq.#

HISTORICAL NOTE: Promulgated by the Department of Natural Resources, Office of Conservation, LR 9:237 (April 1983), amended LR 10:529 (July 1984), LR 30:1255 (June 2004), LR 47:1145 (August 2021).#