{"operation":"document","citation":"98-0408","title":"ALM Safety Associates — Hazardous Materials Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1998-05-15","effective_on":null,"summary":"98-0408 response to ALM Safety Associates concerning 172.102.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-98-0408.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-98-0408.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-98-0408","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/1998/980408.pdf","body":"<<<PAGE 1>>>\n\n•\nof Transportation\nU.S. Department\n400 Seventh Street, S.W.\nSpecial Programs\nResearch and\nWashington, D.C.\n20590\nAdministration\nMAY 15 1998\nMr. Allen L. Mossman\nALM Safety Associates\n65 Sarazen Street\nSaratoga Springs, NY 12866-8719\nDear Mr. Mossman:\nThis is in response to your letter regarding the proper shipping name for mixtures containing\noxygen under the Hazardous Materials Regulations (HMR; 49 Parts 171-180). You requested\ninformation explaining what concentration of oxygen in a gas mixture meets the oxidizing gas\ndefinition.\nRSPA has determined that concentrations of oxygen greater than 23.5% cause or contribute to\nthe combustion of other material more than air does, and therefore meet the definition of\noxidizing gas in § 171.8. RSPA will consider referencing Special Provision 77 for rare gases\nand oxygen mixtures containing more than 23.5% oxygen in a future rulemaking. This issue will\nbe addressed at the next meeting of the United Nations Committee of Experts on the Transport of\nDangerous Goods.\nI hope this answers your inquiry. If we can be of further assistance, please do not hesitate to\ncontact us.\n\n<<<PAGE 2>>>\n\n1:172.102\n110\nAIM Safety Associates\n178\n65 Sarazen Street • Saratoga Springs, NY 12866-8719\nPhone 518-583-2528\nFax 518-583-2539\nsui\nJune\n: 25, 1997\noffice of Hazardous Materials Standards\nDelmer F. Billings, Chief\n• Regs. Dev.\nRSPA - US Dept. of Transportation\nWashington, DC 20590\n400 Seventh Street, s.w.\nDear Mr. Billings:\nI am in receipt of a copy of your letter of interpretation of June\n19, 1997, to Richard P. Schweitzer, Esq.\nLast autumn I proposed questions to RSPA similar to those of Mr.\nSchweitzer's, mainly those relating to proper shipping descriptions\nfor mixtures containing oxygen in concentrations high enough to be\ndefined\noxidizing, and the concentration above which the\nreply I received\noxidizing classification should be used. Enclosed is a copy of the\nfrom RSPA.\nCan I assume, that with the publication of final HM215-B, that the\nsupercedes the\ninterpretation as expressed in your letter of June\none I\nreceived in November?\n18th now\nspecial provision\nIf so, shouldn't\nmixtures?\nAlso, since special provision 77 indicates that the Div.\nis no required to the ago so\nnot above 23.5% for domestic transportation, should I assume that\nconcentrations of oxygen?\nfor international shipments the Div. 5.1 label is required for all\nI am currently doing consultation for a label printing company, and\nhe answers to the above questions would help resolve a number oi\nutstanding problems related to the production of oxygen mixture\nWe have been operating under the interpretations provided\n1 or 0 90 10 7955\nposition regarding any revised rulingen best regards.\nwant to be sure of our\nSincerely,\nAllend Moreman\nAllen L. Mossman\nCC:\nR.\nSchweitzer\nR.\nM.\nAckerman\nLopez","truncated":false,"body_characters":2835}