§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: |
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| (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) OffshoreAt least once each calendar year, but with intervals not exceeding 15 months.
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(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. |
[Amdt. 192-93, 68 FR 53901, Sept. 15, 2003]