{"operation":"document","citation":"05-0002","title":"Raytheon -SAS — Hazardous Materials Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"2005-03-15","effective_on":null,"summary":"05-0002 response to Raytheon -SAS concerning 173.27.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-05-0002.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-05-0002.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-05-0002","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2005/050002.pdf","body":"<<<PAGE 1>>>\n\nI.S. Departmen\nf Transportation\nWashington, D.C. 20590\n400 Seventh Street, S.W.\nPipeline and\nHazardous Materials Safety\nMAR 15 2005\nAdministration\nMr. Donald E. Burke, Jr.\nReference No.: 05-0002\nPackaging Engineer\nRaytheon - SAS\nP.O. Box 902\nEl Segundo, CA 90245\nDear Mr. Burke:\nThis responds to your letter to Mr. Frits Wybenga requesting clarification of the pressure\nrequirements for air shipments under the Hazardous Materials Regulations (HMR; 49 CFR\nParts 171-180). Your questions are based on a letter of interpretation to Haas TCM (Ref. No.\n04-0023) which addressed means to obtain the vapor pressure for the tests in § 173.27.\nSpecifically, you ask if the vapor pressure of the material to be packaged must be determined\nat either 50 or 55 ° C to calculate the pressure retention capability of a packaging in\naccordance with § 173.27(c)(2)(ii).\nThe answer is yes. When calculating the required vapor pressure capability as specified in\n§ 173.27(c)(2)(ii), the vapor pressure of the packaged material must first be determined in\norder to utilize the formulas to calculate the pressure retention capability of the packaging.\nAs provided by § 173.27, each packaging must be capable of withstanding certain pressure\nrequirements for transportation by air. This section does not require testing of each\npackaging; rather, it requires that packaging must be \"capable\" of meeting the pressure\nrequirement without leakage. If past testing or transportation experience indicates that a\npackaging can withstand the pressure requirement without leakage, testing need not be\ndetermination that the packaging meets the pressure requirements.\nperformed. The test report or packaging certification should note the rationale behind the\nI trust this satisfies you request.\nSincerely,\nHattie L. Mitchell\nChief, Regulator Review and Reinvention\nOffice of Hazardous Materials Standards\n173.27\n050002\n\n<<<PAGE 2>>>\n\n01/84/2005\n09:12\n310-647-8301\nRAYTHEON SHIPPING\nPAGE\n02/04\nCorbin\nAugust 5, 2004\nFritz Wybenga\n§ 173.27\nDeputy Associate Administrator\nDHM-1\nU.S. Department of Transportation\nAir\n400 7th St. S.W.\n05-0002\nWashington, DC 20590-0001\nDear Deputy Wybenga:\nHolcombe of Haas TCM (Attached)..\nMy question is in regards to Hattie L. Mitchell's answer of May 5, 2004 Ref. No. 04-0023 to Mr. Larry\nI do not I am in violation of the regulations and subject to fines?\nmeet the requirements other than those stated in 173.27 or advise me that if the container minimum\nIf the answer to (21 is no, then please define the acceptable documented requirements necessary to\npressure requirement is not documented under the prescribed three methods in 173,27 then this is not a\nviolation of the regulations subject to fines.\nThank you,\nSincerely,\nDonald E. Burke, Jr.\n310-647-4431\nPackaging Engineer\nDonald_E_Burke@raytheon.com\nRaytheon\nSAS\n2000 El Segundo Blvd\nP.O. Box 902\nBldg. E4, M/S P190\nEl Segundo, Ca 90245\n\n<<<PAGE 3>>>\n\n01/04/2005\n09:12\n310-647-8301\nRAYTHEON SHIPPING\nPAGE\n03/04\nS. Departmer\n1 Transportatio\nSpecial Programs\nResearch and\nMAY\n5 2004\nAdministration\nMr. Larry Holcombe\nRef. No.: 04-0023\nHaas TCM\nAccount Manager\n1646 West Chester Pike\nWest Chester, PA 19382\nDear Mr. Holcorabe:\nThis responds to your letter concerning determination of the vapor pressure to calculate the test\negulations (HMR; 49 CFR Parts 171-180). Your questions are paraphrased and answere\nressure for packages intended for air transportation in § 173.27 of the Hazardous Material\nbelow:\nsingle chemical component?\nQ1. Is it correct to obtaia the vapor prossure from eriginecring tables if the liquid consists of a\nA1. Yes, obtaining the vapor pressute for a liquid that consists of a single ohemical component\nfrom engineering tables is acceptable.\nQ2 For liquids with multiple oberical componoats, you propose to use vapor pressure from\npressure threshold limit equal to 50% of minimura test pressure for the package. If the vapor\nengineering tables for the most volatile component at the specified tumperature and set a vapor\npressure by laboratory testing. You ask if this approach is suitable.\npressure of the mixture exceeds the threshold limit, you further propose to measure the vapor\nA2. We are unable to determine the suitability of your approach. The Hazardous Materials\npressure may be determined by testing or empirically. Any test methind that leads to the\nRegulations do not prescribe specific methods for detenuining the vapor pressure. The vapor\nwithout leakage may be used.\ndetermination that the package is capable of withstanding the pressurs requirements in § 173.27\nI hope this determinatior is helpful.\nSincerely,\nHithe a mitthel\nHattie I. Mitchell\nOffice of Hazardous Materials Standards\nChief, Rogulatory Review and Reivention\n173.27\n040023\n\n<<<PAGE 4>>>\n\n01/04/2005\n09:12\n310-647-8301\nRAYTHEON SHIPPING\nPAGE 04/04\nvi..\nonsetes\nHaas TCM\nWest Chester, PA 19382\n1648 West Chester Pike\nPhone: (610) 438-9840\nFax: (610) 438-9076\n(800) 220-4227\nwww.haascorp.com\nCorbin\nJaotary 23, 2004\n§173,27\nFrits Wybenga\nAir\nDeputy Associate Administrator\nU.S. Department of Transportation\n04-0023\n400 7th St, S.W.\nDHM1\nWashington, DC 20590-0001\n202-366-0656\nRE: 49 CPR 173.27 General roquirerneats for traispoitation by aircraft\nDear Deputy Wybenga:\nPart 173.27 of 49 Code of Federal Regulations requires that shippers ensure that containers of\nregulations includo using the vapor pressure of the liquid at specitied temperatares (50 or 55\nregulated liquids do not leak under conditions of air shipment. The wethods stated in the\ndegrees Celsius) to determine container pressure capácities.\nWe request your Department's advice ou the suitability of our proposad approact, below, for\nobtaining the neodod vapor prossure data.\n1 Mo the liquid riper sit do headil on a te propose to es engaring.\n2. We nipod nade mainple chemical corponents propose to soot the maste\ncomponent at the specified temperatures.\n›. Any engineoring estimate of a mixture that exceeds the throshold limit vapo\npackagiog requirements.\nvapor pressure.\nressure will autornatically be set aside for Inboratory testing to measure th\ntest, will he used to calculate the required packaging\nThe vapor pressute determined by the too methods, i.c., engineeriag estimate and lab","truncated":false,"body_characters":6238}