Atmospheric Corrosion Control: Monitoring

§ 192.481 Atmospheric Corrosion Control: Monitoring#

(a)Each operator must inspect and evaluate each pipeline or portion of the pipeline that is exposed to the atmosphere for evidence of atmospheric corrosion, as follows: Pipeline type: Then the frequency of inspection is:#

(1)Onshore other than a Service Line At least once every 3 calendar years, but with intervals not exceeding 39 months.#

(2)Onshore Service Line At least once every 5 calendar years, but with intervals not exceeding 63 months, except as provided in paragraph#

(d)of this section.#

(3)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.#

(c)If atmospheric corrosion is found during an inspection, the operator must provide protection against the corrosion as required by § 192.479.#

(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.#