255.475 Internal corrosion control: general.

(a)Corrosive gas may not be transported by pipeline, unless the corrosive effect of the gas on the pipeline has been investigated and steps have been taken to minimize internal corrosion.#

(b)Whenever any pipe is removed from a pipeline for any reason, the internal surface must be inspected for evidence of corrosion. If internal corrosion is found, the following requirements apply:#

(1)The adjacent pipe must be investigated to determine the extent of internal corrosion.#

(2)Replacement must be made to the extent required by the applicable requirements of section 255.485, 255.487 or 255.489 of this Part.#

(3)Steps must be taken to minimize the internal corrosion.#