Haw. Code R. § 6-77-101 - Installation of pipe in a ditch

(a) When installed in a ditch, each transmission line that is to be operated at a pressure producing hoop stress of twenty percent or more of SMYS must be installed so that the pipe fits the ditch so as to minimize stresses and protect the pipe coating from damage.

(b) When a ditch for a transmission line or main is backfilled, it must be backfilled in a manner that:

(1) Provides firm support under the pipe; and

(2) Prevents damage to the pipe and pipe coating from equipment or from the backfill material.

(c) All offshore pipe in water at least twelve feet deep but not more than 200 feet deep, as measured from the mean low tide, must be installed so that the top of the pipe is below the natural bottom unless the pipe is supported by stanchions, held in place by anchors or heavy concrete coating, or protected by an equivalent means.

Notes

Haw. Code R. § 6-77-101

[Eff ] (Auth: HRS § 269-6) (Imp: 49 C.F.R. §192.319, OCT 1, 1990)