{"abstract":"This final rule revises the Hazardous Materials Regulations to address a known safety problem with cylinders manufactured of aluminum alloy 6351-T6. The revisions include an inspection and testing program for early detection of sustained load cracking on cylinders manufactured of aluminum alloy 6351-T6 and used in self-contained underwater breathing apparatus (SCUBA), self-contained breathing apparatus (SCBA), and oxygen services.","action":"Final rule.","agencies":[{"raw_name":"DEPARTMENT OF TRANSPORTATION","name":"Transportation Department","id":492,"url":"https://www.federalregister.gov/agencies/transportation-department","json_url":"https://www.federalregister.gov/api/v1/agencies/492","parent_id":null,"slug":"transportation-department"},{"raw_name":"Pipeline and Hazardous Materials Safety Administration","name":"Pipeline and Hazardous Materials Safety Administration","id":408,"url":"https://www.federalregister.gov/agencies/pipeline-and-hazardous-materials-safety-administration","json_url":"https://www.federalregister.gov/api/v1/agencies/408","parent_id":492,"slug":"pipeline-and-hazardous-materials-safety-administration"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2006/08/29/E6-14255.html","cfr_references":[{"chapter":null,"citation_url":null,"part":173,"title":49},{"chapter":null,"citation_url":null,"part":180,"title":49}],"citation":"71 FR 51122","comment_url":null,"comments_close_on":null,"correction_of":null,"corrections":[],"dates":"Effective date: January 1, 2007.","disposition_notes":null,"docket_ids":["Docket No. PHMSA-03-14405 (HM-220F)"],"dockets":[],"document_number":"E6-14255","effective_on":"2007-01-01","end_page":51129,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2006/08/29/E6-14255.xml","html_url":"https://www.federalregister.gov/documents/2006/08/29/E6-14255/hazardous-materials-aluminum-cylinders-manufactured-of-aluminum-alloy-6351-t6-used-in-scuba-scba-and","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/E6-14255?publication_date=2006-08-29","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2006-08-29/E6-14255/mods.xml","not_received_for_publication":null,"page_length":8,"page_views":{"count":3167,"last_updated":"2026-04-04 14:15:05 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2006-08-29/pdf/E6-14255.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2006-08-29","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2006/08/29/E6-14255.txt","regulation_id_number_info":{"2137-AD78":{"issue":"200404","html_url":"https://www.federalregister.gov/regulations/2137-AD78/hazardous-materials-regulations-aluminum-cylinders-revised-requalification-and-use-criteria-for-the-","title":"Hazardous Materials Regulations: Aluminum Cylinders--Revised Requalification and Use Criteria for the DOT 3 AL Cylinder Made of Aluminum Alloy 6351-TG","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=200404&RIN=2137-AD78&operation=OPERATION_EXPORT_XML","priority_category":"Substantive, Nonsignificant"}},"regulation_id_numbers":["2137-AD78"],"regulations_dot_gov_info":{"checked_regulationsdotgov_at":"2011-11-12T19:56:42Z"},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":51122,"subtype":null,"title":"Hazardous Materials: Aluminum Cylinders Manufactured of Aluminum Alloy 6351-T6 Used in SCUBA, SCBA, and Oxygen Services-Revised Requalification and Use Criteria","toc_doc":"Aluminum cylinders manufactured of 6351-T6 aluminum alloy used in SCUBA, SCBA, and oxygen services; requalification and use criteria","toc_subject":"Hazardous materials:","topics":["Hazardous materials transportation","Incorporation by reference","Motor vehicle safety","Packaging and containers","Radioactive materials","Reporting and recordkeeping requirements","Uranium"],"type":"Rule","volume":71}