GroundRules
49 CFR 179.200-21: -21 Closures for openings.
Where this section sits in the code
- Title 49—Transportation
- Subtitle B—Other Regulations Relating to Transportation
- CHAPTER I—PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
- SUBCHAPTER C—HAZARDOUS MATERIALS REGULATIONS
- PART 179—SPECIFICATIONS FOR TANK CARS
- Subpart D—Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW, 115AW, and 117AW)
(a) All plugs shall be solid, with NPT threads, and shall be of a length which will screw at least 6 threads inside the face of fitting or tank. Plugs, when inserted from the outside of tank heads, shall have the letter “S” at least 3/8 inch in size stamped with steel stamp or cast on the outside surface to indicate the plug is solid.
(b) [Reserved]
Collected 2026-08-27T02:26:34Z. Source file · JSON