StacksVerified U.S. regulatory reference

46 CFR §64.55

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
A pressure relief device must be located on an MPT in a place that—
  1. (a)Is the highest practical point of the tank; and
  2. (b)Allows direct communication with the vapor space.