Special Provision B65 — 49 CFR 172.102 (B-Codes)

B65B-Codes

Excerpts from 49 CFR §172.102. Verify against the current official rule text before relying on them.

Provision text

Tank cars constructed before March 16, 2009, must have a test pressure of 34.47 Bar (500 psig) or greater and conform to Class 105A. Each tank car must have a reclosing pressure relief device having a start-to-discharge pressure of 15.51 Bar (225 psig). The tank car specification may be marked to indicate a test pressure of 20.68 Bar (300 psig).

Materials referencing this code

UN 1613 - Hydrocyanic acid, aqueous solutions or Hydrogen cyanide, aqueous solutions with not more than 20 percent hydrogen cyanide
UN 1051 - Hydrogen cyanide, stabilized with less than 3 percent water