Title 49 Part 179 → Subpart D → §179.220-22

Title 49 → Subtitle B → Chapter I → Subchapter C → Part 179 → Subpart D → §179.220-22

Electronic Code of Federal Regulations e-CFR

Title 49 Part 179 → Subpart D → §179.220-22

e-CFR data is current as of May 27, 2020

Title 49Subtitle BChapter ISubchapter CPart 179Subpart D → §179.220-22

Title 49: Transportation
Subpart D—Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW, 115AW, and 117AW)

§179.220-22   Closure for openings.

(a) All plugs must be solid, with NPT threads, and must be of a length which will screw at least six threads inside the face of fitting or tank. Plugs, when inserted from the outside of the outer shell tank heads, must have the letter “S” at least three-eighths inch in size stamped with steel stamp or cast on the outside surface to indicate the plug is solid.

(b) Openings in the outer shell used during construction for installation must be closed in an approved manner.

[Amdt. 179-9, 36 FR 21343, Nov. 6, 1971]