# Which pipelines must I protect against atmospheric corrosion and what coating material may I use?

- **operation:** document
- **citation:** 49 CFR 195.581
- **title:** Which pipelines must I protect against atmospheric corrosion and what coating material may I use?
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** (a) You must clean and coat each pipeline or portion of pipeline that is exposed to the atmosphere, except pipelines under paragraph (c) of this section.

(b) Coating material must be suitable for the prevention of atmospheric corrosion.

(c) Except portions of pipelines in offshore splash zones or 
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-195-581.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-195-581.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-195-581
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-195.581
**body:**

(a) You must clean and coat each pipeline or portion of pipeline that is exposed to the atmosphere, except pipelines under paragraph (c) of this section.

(b) Coating material must be suitable for the prevention of atmospheric corrosion.

(c) Except portions of pipelines in offshore splash zones or soil-to-air interfaces, you need not protect against atmospheric corrosion any pipeline for which you demonstrate by test, investigation, or experience appropriate to the environment of the pipeline that corrosion will—

(1) Only be a light surface oxide; or

(2) Not affect the safe operation of the pipeline before the next scheduled inspection.
- **truncated:** false
- **body characters:** 647