Safety
Where AAR (Alliance) couplers are fitted, the type "F" coupler is preferred as these are less likely to become separated in a derailment and become a puncture hazard for other tank cars. The type "F" coupler has shelves over and under the coupler that prevent the coupler sliding out of position after a derailment.
In addition, some types of tank cars have a second end plate visible from the exterior, to further avoid end punctures.
It is also preferable if each tap (valve) is recessed within the body of the tank so as to present a reduced knock-off hazard during a derailment.
Read more about this topic: Tank Car
Famous quotes containing the word safety:
“There was only one catch and that was Catch-22, which specified that a concern for one’s own safety in the face of dangers that were real and immediate was the process of a rational mind.... Orr would be crazy to fly more missions and sane if he didn’t, but if he was sane he had to fly them. If he flew them he was crazy and didn’t have to; but if he didn’t want to he was sane and had to.”
—Joseph Heller (b. 1923)
“Perhaps having built a barricade when you’re sixteen provides you with a sort of safety rail. If you’ve once taken part in building one, even inadvertently, doesn’t its usually latent image reappear like a warning signal whenever you’re tempted to join the police, or support any manifestation of Law and Order?”
—Jean Genet (1910–1986)
“... what a family is without a steward, a ship without a pilot, a flock without a shepherd, a body without a head, the same, I think, is a kingdom without the health and safety of a good monarch.”
—Elizabeth I (1533–1603)