{"abstract":"PHMSA is proposing to amend the Hazardous Materials Regulations to prohibit the transportation of flammable liquids in unprotected external product piping on DOT specification cargo tank motor vehicles. If adopted as proposed, these amendments will reduce fatalities and injuries that result from accidents during transportation involving the release of flammable liquid from unprotected external product piping.","action":"Notice of proposed rulemaking.","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/2011/01/27/2011-1695.html","cfr_references":[{"chapter":null,"citation_url":null,"part":173,"title":49}],"citation":"76 FR 4847","comment_url":null,"comments_close_on":"2011-03-28","correction_of":null,"corrections":[],"dates":"Written comments should be submitted on or before March 28, 2011.","disposition_notes":null,"docket_ids":["Docket No. PHMSA-2009-0303 (HM-213D)"],"dockets":[],"document_number":"2011-1695","effective_on":null,"end_page":4854,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2011/01/27/2011-1695.xml","html_url":"https://www.federalregister.gov/documents/2011/01/27/2011-1695/hazardous-materials-safety-requirements-for-external-product-piping-on-cargo-tanks-transporting","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2011-1695?publication_date=2011-01-27","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2011-01-27/2011-1695/mods.xml","not_received_for_publication":null,"page_length":8,"page_views":{"count":712,"last_updated":"2026-10-24 14:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2011-01-27/pdf/2011-1695.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":null,"publication_date":"2011-01-27","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2011/01/27/2011-1695.txt","regulation_id_number_info":{"2137-AE53":{"issue":"201510","html_url":"https://www.federalregister.gov/regulations/2137-AE53/hazardous-materials-safety-requirements-for-external-product-piping-on-cargo-tanks-transporting-flam","title":"Hazardous Materials: Safety Requirements for External Product Piping on Cargo Tanks Transporting Flammable Liquids Wetlines MAP-21","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=201510&RIN=2137-AE53&operation=OPERATION_EXPORT_XML","priority_category":"Other Significant"}},"regulation_id_numbers":["2137-AE53"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"List of Hazardous Materials Incidents Determined to be Wetlines Incidents","document_id":"PHMSA-2009-0303-0048"},{"title":"U.S. DOT/PHMSA -  Environmental Assessment","document_id":"PHMSA-2009-0303-0018"},{"title":"Withdrawn on 8/12/2011 at the request of PHMSA.  This document is now item 48 in the docket.","document_id":"PHMSA-2009-0303-0014"},{"title":"Supporting Material for the Regulatory Evaluation, Excel File Containing the List of Incidents Reviewed in the Incident Analysis","document_id":"PHMSA-2009-0303-0009"},{"title":"HM-213D Regulatory Assessment and Regulatory Flexibility Analysis","document_id":"PHMSA-2009-0303-0008"},{"title":"U.S. DOT/PHMSA - Memorandum to the Docket (HM-213D)","document_id":"PHMSA-2009-0303-0005"},{"title":"NTTC Cargo Tank Welding Incident Data - NTTC Cargo Tank Welding Incident Data","document_id":"PHMSA-2009-0303-0004"},{"title":"Cargo Tank Concepts - Testimony Before the House Committee on Transportation and Infrastructure","document_id":"PHMSA-2009-0303-0003"},{"title":"Attached","document_id":"PHMSA-2009-0303-0002"},{"title":"Civacon Knappco Cost Data","document_id":"PHMSA-2009-0303-0001"}],"comments_url":"https://www.regulations.gov/docketBrowser?rpp=50&so=DESC&sb=postedDate&po=0&dct=PS&D=PHMSA-2009-0303","supporting_documents_count":10,"docket_id":"PHMSA-2009-0303","regulation_id_number":null,"title":"Safety Requirements for External Product Piping on Cargo Tanks Transporting Flammable Liquids","checked_regulationsdotgov_at":"2011-02-16T08:15:37Z"},"regulations_dot_gov_url":null,"significant":true,"signing_date":null,"start_page":4847,"subtype":null,"title":"Hazardous Materials: Safety Requirements for External Product Piping on Cargo Tanks Transporting Flammable Liquids","toc_doc":"Safety Requirements for External Product Piping on Cargo Tanks Transporting Flammable Liquids","toc_subject":"Hazardous Materials:","topics":["Hazardous materials transportation","Packaging and containers","Radioactive materials","Reporting and recordkeeping requirements","Uranium"],"type":"Proposed Rule","volume":76}