Do you have a RIN (Retesters Identification
Number)? Are you able to test low
pressure DOT cylinders? The following is a guide to get a RIN
number. For further reference refer to CFR 49 Subpart C Section (180.201-180.215). You
can order the book or go to the web site. The web site link is on
our feedback page.
obtain an RIN number.
1. Write a letter to the DOT requesting a Retesters Identification Number. Include a statement as to what type of
cylinders you will be testing and what type of testing you will
be performing. (Such as: modified hydrostatic testing by proof
pressure testing or visual inspection, or full hydrostatic
testing in a water jacket.) The letter should be addressed to:
Administrator for Hazardous Materials Safety
U.S. Department of Transportation
Washington, DC 20590-0001
2. You will
receive an application form and instructions to have an
inspection of your retest facility performed by an independent
inspection agency approved by the U.S. Department of
Transportation. Upon successfully completing the inspection of
your facilities and determination of your qualifications, the
inspector will write a report to the RSPA.
3. The RSPA
will issue a retesters identification number which is valid for 5
years from the date of issuance, and may be renewed upon
application to RSPA. Note: Applications for renewal must be
submitted at least 50 days prior to expiration.
The Independent Inspection Agency Report
In order for the RSPA to act favorably on your application for a
retesters identification number, you will have to have a letter
of recommendation from an independent inspector. Call one or more
of the approved inspection agencies and talk to them about
conducting an inspection of your facilities. Inquire about the
items they will inspect and the cost of the inspection and
The following is a list of equipment and documentation which
should be in your possession:
hydrostatic test equipment should be in accordance with the
requirements set forth in pamphlet C-1 of the Compressed Gas
2. You must be
able to prove the accuracy of the equipment. That is, you must
have a calibration system in place. For pressure gauges you can
use either a Master gauge or a deadweight tester.
3. It is
recommended that you have copies of and be familiar with the
latest revision of the following:
CGA C-1 Methods of Hydrostatic Testing of Compressed Gas
CGA C-6 Standards for Visual Inspection of Compressed Gas
CFR 49 Subpart C Section (180.201-180.215)
1. Keep written records of all hydrostatic tests. See log sheets
in CGA- pamphlet C-1 for examples.
2. All Cylinders subjected to a hydrostatic test should also be
given a visual examination. (internal and external)
3. Never attempt to retest a cylinder marked with an
"E" number or "SP" number unless, you have a
copy of the "Exemption" or "Special Permit".
This is the most common citation issued to cylinder retesters by
the Enforcement Division of the DOT.
National Fire Protection Association, 1 Batterymarch Park,
Quincy, Ma. 02269-9101 PH.800-344-3555
Compressed Gas Association, 1725 SW Jefferson Davis Hwy,
Arlington, Va 22202-4102, PH.703-412-0900
Superintendent of Documents , Attn: New Orders, PO Box 371954,
Pittsburgh, Pa. 15250-7954, PH. 202-512-1800