{"operation":"document","citation":"03-0044","title":"Mr. Scott C. Morrison — Hazardous Materials Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"2003-06-06","effective_on":null,"summary":"03-0044 concerning 173.33.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-03-0044.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-03-0044.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-03-0044","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2003/030044.pdf","body":"<<<PAGE 1>>>\n\nof Transportatior\nJ.S. Department\n400 Seventh St., S.W.\nWashington, D.C. 20590\nJUN -6 2003\nMr. Scott C. Morrison\n2009 South Trillium Drive\nReference No. 03-0044\nAliquippa, PA 15001\nDear Mr. Morrison:\nThis in response to your letter concerning the requirement in paragraph 7.c. (4) of Exemption\nDOT-E-11537 that prohibits offerors and carriers from loading on the same motor vehicle\nintermediate bulk containers (IBCs) containing different hazardous materials that, if mixed,\nwould cause an unsafe condition to occur. You asked if the reason for segregating these\nmaterials is essentially the same as that prescribed in 49 CFR 173.33(a)(2) and discussed in letter\nReference No. 98-0347.\nThe answer is yes. The Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) contain\nvarious requirements covering the loading of hazardous materials that would react dangerously\nwith each other and cause an unsafe condition to occur. For example, see §§ 173.21(e) and\nparties involved must evaluate the potential risks posed by different materials that are loaded on\n173.33(a)(2). As we stated in the referenced letter, because there are so many variables, the\nthe same motor vehicle.\nSincerely,\nHothe z. mitthell\nHattie L. Mitchell, Chief\nRegulatory Review & Reinvention\nOffice of Hazardous Materials Standards\n173.33\n030044\n\n<<<PAGE 2>>>\n\nEdmonson\n2009 S. Trillium Dr.\nScott C. Morrison\n$|73,33\nAliquippa, PA 15001\n(724) 375-6138\nFebruary 4, 2003\nCargo Tanks\nMr. Edward T. Mazzullo\n03-0044\nDirector, Office of Hazardous Materials Standards\n400 7th Street S.W\nU.S. DOT/RSPA (DHM-10)\nWashington, D.C. 20590-0001\nRE:\nExemption DOT E-11537\nInterpretation Letter on 173.33(a)(2) to Denise E. Oas issued on 01/05/2000\nReference No. 98-0347\nDear Mr. Mazzullo:\nThis letter is to follow up my telephone conversation with Eileen at the Hazardous Material\nInformation Center on 2/3/03 to request clarification of Item 7.c.(4) in DOT E-11537 (on\ndischarge from IBC's without removal from the vehicle which states:\n\"Two or more materials may not be loaded on the same vehicle if, as a result of any\nmixture of the materials, an unsafe condition could occur.\"\nWhile doing research on this exemption, I came across Interpretation Letter 98-0347 that\nconcerns the loading of material on the same multi-unit cargo tank. The wording in paragraph 1\nof this letter and 49 CFR 173,33(a)(2) seems to be similar to the wording in the DOT E-11537:\n\"...This provision restricts a person form loading or accepting different materials on the\nsame multi-unit cargo tank motor vehicle if, as a result of any mixture of the materials,\n(E added the emphasis to the wording in bold).\nan unsafe condition would occur such as an explosion..\nMy question is whether the advice in Letter 98-0347 would also be applicable to Item 7.c. (4) of\nthe DOT E-115377 Specifically, the advice in paragraph 4 which states:\n\"Many factors affect how materials may react with each other...Because there are so\nmany variables, under the Hazardous Materials Regulations, the parties involved must\nevaluate the potential risk posed by different materials that are offered and accepted for\ntransportation.\nThank you for your assistance in this matter.\nSincerely,\nFat Movinon\nScott C. Morrison","truncated":false,"body_characters":3246}