{"operation":"document","citation":"05-0160","title":"CheckPoint Mailers Incorporated — Hazardous Materials Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"2005-07-27","effective_on":null,"summary":"05-0160 response to CheckPoint Mailers Incorporated concerning 172.101.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-05-0160.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-05-0160.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-05-0160","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2005/050160.pdf","body":"<<<PAGE 1>>>\n\nU.S. Department\n400 Seventh Street, S.W.\nof Transportation\nPipeline and\nJUL 27 2005\nWashington, D.C. 20590\nHazardous Materials Safery\nAdministration\nMr. Cliff Bartley\nRef. No. 05-0160\nHorizon Lines\n5800-1 William Mills St., Blount Island\nJacksonville, FL 32226\nDear Mr. Bartley:\nThis is in response to your letter requesting clarification of the vessel stowage and\nsegregation requirements for \"Nitric acid,\" UN2031 under the Hazardous Materials\nRegulations (HMR; 49 CFR Parts 171-180). You state that there are inconsistencies\nbetween the HMR and the International Maritime Dangerous Goods (IMDG) Code\nstowage and segregation requirements for the UN2031 entries. Specifically, you ask\nwhether the HMR stowage and segregation requirements assigned to \"Nitric acid, other\nthan red fuming, with more than 70 percent nitric acid,\" UN2031, Packing Group I, and\n\"Nitric acid, other than red fuming with not more than 70 percent nitric acid,\" UN2031,\nPacking Group II are intended to be the same and which requirements apply for a\nconcentration that is less than 50 percent. You also ask the reasoning for assigning Code\n111 in § 176.84 to the Packing Group II entry.\nCurrently under the HMR, the stowage and segregation requirements for the Packing\nGroup I and II entries for UN2031 are the same; however, our intent is to align these\nrequirements with the IMDG Code in a future rulemaking. With respect to the\nassignment of Code 111 to the Packing Group II entry, because the code addresses nitric\nacid with a concentration that exceeds 50 percent, it does not apply to your material that\nTea iconent for your materia for peasa to Tetearn of le than 0 per and segregation\n89, 90 and 110 and the stowage category requirement is Category D.\nAlthough the IMDG Code stowage and segregation requirements for the UN2031 entries\nare less restrictive than the current HMR requirements, you may want to consider the\n172.101 Subpart B\n176.84\n050160\n\n<<<PAGE 2>>>\n\nalternative use of the IMDG Code as authorized with certain conditions and limitations in\n§ 171.12(b).\nI hope this information is helpful. Please contact this office if you have additional\nquestions.\nSincerely,\nthatle I. Mithell\nHattie L. Mitchell, Chief\nRegulatory Review and Reinvention\nOffice of Hazardous Materials Standards\n\n<<<PAGE 3>>>\n\n-\nHORIZON\nJune 23, 2005\nMIntyre\nMr. Ed Mazzullo\nDirector Office of Hazardous Materials\n3112.101 Subpart B\nHazardous Materials Standards\n. $176-84\nUSDOT / PRMSA / DHM10\n400 7# Street S.W.\nApplicability Segregation\nWashington, DC 20590\n05-0160\nRe: Subpart B - Table of Hazardous Materials and Special Provisions - CFR172.101\nDear Mr. Mazzullo,\nOur company, Horizon Lines, LIC is a domestic containerized ocean transportation company.\nlazmat regulations. There is some confusion regarding the entry in the hazmat table fi\n/e are tendered hazardous cargo under both the IMDG regulations as well as the Domesti\nand the product under PGIl is to be segregated only as a corrosive 8 but the confusion is in the\nother vessel stowage where the codes for both packing groups of UN2031 are listed as:\n44\n- Stow \"away from\" oxidizers\n66\n- Stow \"separated from\" flammable solids\n89\n- Segregation sarne as for oxidizers\n90\n- Stow \"separated from\" radioactive materials\n110\n- Packaging Group Il if concentration does not exceed 70% percent acid\n111 - If concentration exceeds 50 percent acid, notes 66, 74*, 89, and 90 apply\n* (74 - Stow \"separated from\" oxidizers)\nOn the surface, there seems to be no difference in the stowage. My question is if both entries\nhave the additional stowage requirements as listed above for vessel stowage, is there a difference\nin the stowage and segregation of the two entries? In reviewing Amendment 32 of the IMDG for\nthis entry, column 16 for stowage and segregation reads:\nPGI\nCategory D. Segregation as for class 5.1 but \"separated from\" classes 4.1, 5.1 and 7\nPGII\nCategory D. If concentration exceeds 50% acid, segregation as for class 5.1 but \"separated\nfrom\" class 4.1, 5.1 and 7.\nWhat is the stowage requirement for nitric acid, UN2031 if the concentration is less than 50%\nacid and why is the other vessel code 111 listed for the entries in PG1 and PGII? Does that code\noverride the other vessel stow codes?\nHorizon Lines • Blount Island • 5800-1 William Mills Street • Jacksonville. FL 32226 • 904.757.8266 • www.horizon-lines.com\n\n<<<PAGE 4>>>\n\nYour help be beneficial in our understanding on the handling of this entry in the regulations.\nThank you for your attention to these questions.\nSincerely,\nlill Balle\nManager Hazardous Materials\nCc:\nCommandant G-MSO-3\nUS Coast Guard\n2100 2nd Street S.W.\nRoom 1210\nFax 202-267-4570\nWashington, DC 20593-0001\nHorizon Lines • Blount Island • 5800-1 William Mills Street • Jacksonville, FL 32226 • 904.757.8266 • www.ho-izon-lines.com","truncated":false,"body_characters":4812}