Tube Trailer Archives | FIBA Technologies, Inc.

U.S. DOT Special Permit Regulations

What is a special permit? A special permit is a document issued by the Associate Administrator or Secretary of Transportation of the United States Department of Transportation (DOT) permitting a person (see below definition of a person) to perform a function that is not otherwise...

Selection of Methods for Requalification of Compressed Gas Cylinders and Tubes

Q. What does requalification mean? A. Requalification means the completion of a visual inspection and/or the test(s) required to be performed on a cylinder to determine its suitability for continued service.” Code of Federal Regulations, Title 49 (Transportation) Part 180...

UPDATE: Fill Pressure in Hydrogen Service

NOTE: DOT regulatory changes require the March 25, 2013 posting to be updated. SP No Longer Required for 10% Overfill in Hydrogen Service As noted in a prior blog, FIBA manufactures 3AA ton containers and 3AAX tubes. By DOT definition, both are cylinders. Both containers are su...

Composite Gas Trailers

FIBA Technologies is blazing a path to the future with new lightweight compressed gas trailers using aerospace grade carbon fibers and advanced polymers. The result is the ability to reduce fleet sizes by carrying more gas and less steel with high capacity, lightweight compressed...

Fill Pressure in Hydrogen Service

10% Overfill by SP FIBA manufactures 3AA ton containers and 3AAX tubes. By DOT definition, both are cylinders. Both containers are suitable for hydrogen gas service. But, rather than being used for hydrogen, the 3AA tons are generally used for liquefied gases such as chlorine, HC...

Requalifying DOT UN & 3-Series Tubes

DOT UN or ISO tubes that are manufactured in accordance with 49 CFR 178.71(j) or ISO 11120 will have a retest cycle of 10-years provided they are carrying Division 2.1 (flammable) or 2.2 (non-flammable) gases (excepting CO2). The retest cycle is 5 years for Division 2.3 (toxic) g...

Tube Trailer Acoustic Emission Testing

DOT pressures vessels (tubes) require periodic inspections to evaluate the integrity and safety of each vessel. After years of use over the land and sea, it is important that authorized holders of Requalification Identification Numbers (RIN) conduct a thorough examination of each...

Safe Inspection of Pressure Vessels

When is Disassembly Required? Owners and operators of high pressure gas distribution equipment, such as tube trailers and multiple-element gas containers (MEGCs), are required to recertify the equipment’s DOT and UN pressure vessels every 5 to 10 years. Depending upon the sit...

Building a Virtual Natural Gas Pipeline

FIBA Satisfies the CNG Conversion Needs of Remote Manufacturing Facilities At businesses worldwide, natural gas continues to make significant inroads as a high-value energy resource for manufacturing and operations processes. Specifically, numerous factors related to natural g...

DOT UN Tube Fill Pressure

DOT Regulations - Pressure DOT UN tubes manufactured per DOT regulation and ISO standard 11120 shall be filled in accordance with 49 CFR Section 173.302b(b), which states: “UN pressure receptacles filling limits. A UN pressure receptacle is authorized for the transportation...