Interpretation Response #06-0064 ([Catalina Cylinders] [Mr. E.A. Ward Dekker, Jr])
Below is the interpretation response detail and a list of regulations sections applicable to this response.
Interpretation Response Details
Response Publish Date:
Company Name: Catalina Cylinders
Individual Name: Mr. E.A. Ward Dekker, Jr
Location State: CA Country: US
View the Interpretation Document
Response text:
May 23, 2006
Mr. E.A. Ward Dekker, Jr. Reference No. 06-0064
QA Manager
Catalina Cylinders
12452 Monarch Street
Garden Grove, California 92841
Dear Mr. Dekker:
This responds to your inquiry (facsimile) regarding the manufacture of a DOT 3AL cylinder for oxygen enriched air, air with oxygen content greater than 22-23%, under the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180).
Your questions are paraphrased and answered as follows:
Q1. Do aluminum cylinders for oxygen enriched air have to conform to § 173.302(b)?
Al. Gas mixtures with oxygen concentrations greater than 23.5% should be considered to cause or contribute to combustion of other material to a greater extent than air. These gas mixtures must be described as “Compressed gas, oxidizing, n.o.s.” and must be classified and labeled with a Division 2.2 (nonflammable gas) primary hazard and a Division 5.1 (oxidizer) subsidiary hazard. If the oxygen concentration is greater than 23.5%, then the conditions specified in § 173.302(b) must be met.
Q2. Must a residual hydrocarbon test be performed?
A2. Yes. The cylinders must conform to the cleanliness standards in Federal Specification RR-C 901C, paragraph 4.4.2.2.
Q3. Must the cylinder be designed to a maximum service pressure of 3000 psi?
A3. No, the cylinder may have a higher marked service pressure. The pressure in each cylinder may not exceed 3000 psi at a temperature of 21°C (70°F). Also, see
§ 173.301(a)(8).
I hope this satisfies your inquiry. If we can be of further assistance, please contact us.
Sincerely,
John A. Gale
Chief, Standards Development
Office of Hazardous Materials Standards
173.302(b)