Cite as [A.S.A.C. § 24.0855]
(a) Inspection. Each transmission line or main must be inspected to ensure that it is conducted in accordance with this section, and each component must be inspected to insure that it has not sustained any damage that could impair its serviceability.
(b) Repair. Upon inspection and discovery each imperfection or damage which impairs the serviceability of a pipe shall be repaired in accordance with 49 CFR 192.309 and 192.311, which are hereby incorporated by reference.
(c) Bends and elbows in pipe. Each field bend, wrinkle bend, and wrought steel welding elbow and transverse segments of such elbows shall be comply with the provisions of 49 CFR 192.313 and 192.315, which are hereby incorporated by reference.
(d) Hazard Protection.
(1) The operator must take all practicable steps to protect each transmission line or main from washouts, floods, unstable soil, landslides or other hazards that may cause the pipeline to move or to sustain abnormal loads. In addition, the operator must take all practicable steps to protect offshore pipelines from damage by mudslides, water currents, hurricanes, ship anchors and fishing operations.
(2) Each aboveground transmission line or main, not located offshore or in inland navigable waters, must be protected from accidental damage by vehicular traffic, either by placement at a safe distance from traffic or by installing barricades.
(3) Pipelines, including pipe risers, on each platform located offshore or in inland navigable waters, must be protected from accidental damage by vessels.
(e) Installation of pipe.
(1) Pipe to be installed in a ditch shall comply with the provisions of 49 CFR 192.319, which is hereby incorporated by reference.
(2) Plastic pipe shall be installed in accordance with 49 CFR 192.321, which is hereby incorporated by reference.
(f) Casings. Each casing used on a transmission line or main under a highway must comply with the following:
(1) The casing must be designed to withstand the superimposed loads;
(2) If there is a possibility of water entering, the ends must be sealed;
(3) If the ends of an unvented casing are sealed and the sealing is strong enough to retain the maximum allowable operating pressure of the pipe, the casing must be designed to hold this pressure at a stress level of not more than 72 % of SMYS;
(4) If vents are installed on a casing, the vents must be protected from the weather to prevent water from entering the casing.
(g) Underground clearance.
(1) Each transmission line must be installed with at least 12 inches of clearance from any other underground structure not associated with the transmission line. If this clearance cannot be attained, the transmission line must be protected from damage that might result from the proximity of the other structure.
(2) Each main must be installed with enough clearance from any other underground structure to allow proper maintenance and to protect against damage that might result from proximity to other structures or potential hazards.
(h) Cover. Each buried transmission line shall be installed with the minimum level of cover as provided under 49 CFR 192.327, which is hereby incorporated by reference.History: Rule 02-01, eff 30 Aug 01.