{"operation":"document","citation":"14-0067","title":"Transport Canada, TDG — Hazardous Materials Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"2014-06-05","effective_on":null,"summary":"14-0067 response to Transport Canada, TDG concerning 180.205, 180.209.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-14-0067.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-14-0067.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-14-0067","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2014/140067.pdf","body":"<<<PAGE 1>>>\n\nU.S. Department\nof Transportation\nPipeline and Hazardous\nMaterials Safety\nAdministration\n1200 New Jersey Avenue, SE\nWashington, D.C. 20590\nMs. Nida Chaudhary\nTransport Canada, TDG\nPlace de Ville, Tower C, 9th Floor\n330 Sparks Street\nOttawa, Ontario K1A ON5\n1 JUN 0 5 2014\nRefNo.: 14-0067\nDear Ms. Chaudhary:\nThis is a response to your April 1, 2014 email requesting clarification of the Hazardous\nMaterials Regulations (HMR; 49 CFR Parts 1 71-180) with regard to the requalification of\nDOT specification cylinders. Specifically, you seek clarification on the requalification\nrequirements applicable to DOT specification cylinders that are 2 inches or less outside\ndiameter and less than 2 feet in length.\nSections 180.205 and 180.209 provide the requalification requirements applicable to DOT\nspecification cylinders. In§ 180.209, Table 1 provides the minimum test pressure and\nrequalification period for DOT specification cylinders. Note 1 to Table 1 states that \"any\ncylinder not exceeding 2 inches outside diameter and less than 2 feet in length is excepted\nfrom volumetric expansion test.\" You ask whether DOT specification cylinders below the\nsize stated above are subject to requalification by proof pressure test or an internal visual\ninspection.\nCylinders not exceeding 2 inches in outside diameter and less than 2 feet in length are not\nsubject to any other pressure testing requirements or an internal visual inspection. However,\nsmall cylinders of this type must be tested and inspected prior to further use if they meet any\nof the criteria in § 180.205( d).\nI hope this information is helpful. If you have any more questions, please do not hesitate to\ncontact this office.\nSincerely,\nRobert Benedict\nChief, Standards Development\nStandards and Rulemaking Division\n--------------------------------\n------- -\n\n<<<PAGE 2>>>\n\nDrakeford, Carolyn (PHMSA)\nFrom:\nSent:\nTo:\nSubject:\nINFOCNTR (PHMSA)\nTuesday, April 01,2014 4:19PM\nDrakeford, Carolyn (PHMSA)\nFW: Request for Letter of Interpretation- 49 CFR 180.209\n~I indev:s\nI '-I-OOh7\nHi Carolyn,\nThis caller requested we submit this e-mail as a formal letter of interpretation.\nThanks,\nVictoria\nFrom: Chaudhary, Nida [mailto:Nida.Chaudhary@tc.gc.ca]\nSent: Tuesday, April 01, 2014 4:11PM\nTo: INFOCNTR (PHMSA)\nSubject: Request for Letter of Interpretation - 49 CFR 180.209\nGood day,\nThis email is for a request for letter of interpretation\nMy question is regarding 49 CFR 180.209 Table 1 note 1 (see highlighted below)\nQuestion: The wording of this note states that a cylinder below these dimensions is excepted from volumetric expansion\ntest. Does this mean that a cylinder less than 211 OD and 2' length must undergo requalification by either proof pressure\nor visual examination instead? Or does this mean that this cylinder is exempt from all requalification requirements? For\nexample, for a small DOT-3AL cylinder that is less than 211 OD and 2' length.\nTABLE 1-REQUALIFICATION OF CYLINDERS 1\nSpecification under which cylinder was\nmade\nMinimum test pressure\n(psig) 2\nRequalification period\n(years)\nDOT 3 ......... .. . . . ...... .......... ....... . . ... 3000 psig .. . .............................. 5\nDOT 3A, 3AA .. . ... .. . . ..................... 513 times service pressure, except noncorrosive\nservice (see§ 180.209(g)).\n5, 10, or 12 (see§ 180.209(b), (f), (h),\nand Ul\nDOT 3AL .. DOT 3AX, 3AAX .. 38, 38N .. . ............... 5/3 times service pressure ................... 5 or 12 (see§ 180.209U))\n. ............. 5/3 times service pressure . .... . ............ 5\n. ................................... 2 times service pressure (see\n§ 180.209(g))\n5 or 10 (see§ 180.209(f))\n3E .. . ................................ Test not required.\n3HT ............................. 5/3 times service pressure ................... 3 (see§§ 180.209(k) and 180.213(c))\n3T . . . . . . . . . . . . . . . . . . . . . .. .. . . ............ 5/3 times service pressure . . . ..... 5\n4AA480 .............. 2 times service pressure (see\n§ 180.209(g)).\n5 or 10 (see§ 180.209(h))\n48, 48A, 48W, 48-240ET .. .. ............. 2 times service pressure, except noncorrosive\nservice (see§ 180.209(g)).\n5, 10, or 12 (see§ 180.209(e), (f), and\nU))\n4D, 4DA, 4DS .. DOT 4E .. .. ........................ 2 times service.. . ....................... 5\n.. ................ 2 times service pressure, except noncorrosive\n(see§ 180.209(g)).\n5\n4L.. . .................................................. Test not required.\nB. BAL... .. ............. 10 or 20 (see§ 180.209(i))\nExemption or special permit cylinder ....... See current exemption or special permit See current exemption or special permit\nForeign cylinder (see§ 173.301(j) of this\nsubchapter for restrictions. on use).\nAs marked on cylinder, but not less than\n5/3 of any service or working pressure\nmarking.\n5 (see§§ 180.209(1) and 180.213(d)(2))\n1 Any cylinder not exceeding 2 inches outside diameter and less than 2 feet in length is excepted from volumetric expansion\ntest.\n2 For cylinders not marked with a service pressure, see§ 173.301 a(b) ofthis subchapter.\n1\n\n<<<PAGE 3>>>\n\nPlease note that I have spoken to DOT personnel about this issue before, specifically Mark Toughiry, but I would like a\nwritten letter of interpretation to present to the CSA B339 committee. We are working on a similar section for the\nCanadian standard that is adopted in Canadian regulations.\nThank you in advance,\nNida Chaudhary\nEngineer llngenieure\nTel.: (613) 998-0517\nFax I Telecopieur: (613) 993-5925\nnida.chaudharv@tc.gc.ca\nTransport Canada, TDG I Transports Canada, TMD\nPlace de Ville, Tower C, 9th floor I Tour C, 9 ieme etage (ASDD)\n330 Sparks Street 1330, rue Sparks, Ottawa, Ontario K1A ON5\n2","truncated":false,"body_characters":5684}