StacksVerified U.S. regulatory reference

49 CFR §193.2621

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Hoses used in LNG or flammable refrigerant transfer systems must be:
  1. (a)Tested once each calendar year, but with intervals not exceeding 15 months, to the maximum pump pressure or relief valve setting; and
  2. (b)Visually inspected for damage or defects before each use.