Tank built under these specifications must be circular in cross section, with formed heads designed convex outward. When specified in §179.201-1, the tank must have at least one man way or one expansion dome with man-way, and such other external projections as are prescribed herein. When the tank is divided into compartments, each compartment must be treated as a separate tank.
[Amdt. 179–10, 36 FR 21348, Nov. 6, 1971]