(a) The requirements for decommissioning pipelines are listed in §250.1750 through §250.1754.

(b) The table in this section lists the requirements if you take a DOI pipeline out of service:

Open Table
If you have the pipeline out of service for: Then you must:
(1) 1 year or less, Isolate the pipeline with a blind flange or a closed block valve at each end of the pipeline.
(2) More than 1 year but less than 5 years, Flush and fill the pipeline with inhibited seawater.
(3) 5 or more years, Decommission the pipeline according to §§250.1750-250.1754.

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