LAC 43:XIII.7929. External Corrosion Control: Buried or Submerged Components [49 CFR 193.2629]

A. Buried or submerged component that is subject to external corrosive attack must be protected from external corrosion by: 1. material that has been designed and selected to resist the corrosive environment involved; or [49 CFR 193.2629(a)(1)] 2. the following means: a. an external protective coating designed and installed to prevent corrosion attack and to meet the requirements of §192.461 of this chapter; and [49 CFR 193.2629(a)(2)(i)] b. a cathodic protection system designed to protect components in their entirety in accordance with the requirements of LAC 43:XIII.2115 of this chapter and placed in operation before October 23, 1981, or within 1 year after the component is constructed or installed, whichever is later. [49 CFR 193.2629(a)(2)(ii)] B. Where cathodic protection is applied, components that are electrically interconnected must be protected as a unit. [49 CFR 193.2629(b)]