49 CFR 172 Special Provision TP27 (TP-Codes)

These provisions apply to the transportation of hazardous materials in IM and UN Specification portable tanks.
DescriptionA portable tank having a minimum test pressure of 4 bar (400 kPa) may be used provided the calculated test pressure is 4 bar or less based on the MAWP of the hazardous material, as defined in §178.275 of this subchapter, where the test pressure is 1.5 times the MAWP.
HazMat with this Code

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