192.481—Atmospheric corrosion control: Monitoring.
(a)
Each operator must inspect each pipeline or portion of pipeline that is exposed to the atmosphere for evidence of atmospheric corrosion, as follows:
| If the pipeline is located: | Then the frequency of inspection is: |
|---|---|
| Onshore | At least once every 3 calendar years, but with intervals not exceeding 39 months |
| 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.
[Amdt. 192-93, 68 FR 53901, Sept. 15, 2003]