Archive for the ‘Regulations’ Category

REGULATIONS

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... Read more
featured imga

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... Read more
hydrogen-storage-trailer

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... Read more
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Cylinder Ultrasonic Examination

DOT pressure vessels (cylinders) require periodic inspections to evaluate the integrity and safety of each vessel. After years in use, it is important that authorized holders of a Requalification Identification Number (RIN) conduct a thorough examination of each vessel.... Read more
hydrogen-storage-trailer

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... Read more
dot-tubes

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... Read more
tube-markings

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... Read more