{"operation":"document","citation":"10-0046","title":"North Carolina State Highway Patrol — Hazardous Materials Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"2010-04-01","effective_on":null,"summary":"10-0046 response to North Carolina State Highway Patrol concerning 177.834.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-10-0046.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-10-0046.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-10-0046","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretations/2010/100046.pdf","body":"<<>>\n\nU.S. Department of Transportation 1200 New Jersey Ave, SE\nWashington, D.C. 20590\nPipeline and Hazardous Materials\nSafety Administration\nAPR - 1 2010\nLt. D. R. Shackelford\nAssistant MCSAP Administrator\nNorth Carolina State Highway Patrol\n4702 Mail Service Center\nRaleigh, NC 27699-4701\nRef. No. 10-0046\nDear Lt. Shackelford:\nThis responds to your November 13,2009 email concerning the requirement of the Hazardous\nMaterials Regulations (HMR; 49 CFR Parts 171-180) to secure packages in a motor vehicle.\nSpecifically, you ask about securing propane cylinders in accordance with § 177.834.\nAccording to your email, the propane cylinders are placed in recessed trays so that the base of\neach cylinder sits two inches below the horizontal edge ofthe tray. The trays may be stacked;\nhowever, whether stacked or unstacked, no tray or other device is placed on top of the cylinders.\nYou provide pictures illustrating this method of securing the cylinders. Additionally, in a\ntelephone conversation with a member of my staff, you noted that these trays are placed in a\nclosed freight vehicle known a \"mickey body\" truck. It is your understanding from visual\ninspections that this method secures the cylinders against shifting, including overturning and\nejection from the motor vehicle, under conditions normally incident to transportation and that\nthe likelihood of damage to the cylinder valves is minimal. You ask if this method of securing\nthe cylinders complies with § 177.834(a) or whether a locking ring or other device designed to\nsecure the topmost cylinders is also needed.\nBased on the information provided, it is the opinion of this Office that this method of securing\nthe cylinders would achieve compliance with the general requirements of § 177.834(a) as well\nas the loading requirements specific to transport of Class 2 gases in § 177.840(a)(1). Therefore,\nso long as there is no shifting or overturning of the cylinders during normal transportation\nconditions, a locking ring or other method of securing the topmost cylinders is not required.\nI hope this information is helpful. If you have further questions, please contact this office.\nSinc;J.iY\n,\nCharieS~\nChief, Standards Development\nce of Hazardous Materials Standards\n\n<<>>\n\nDrakeford, Carol n\nFrom:\nSent:\nTo:\nSubject:\nShackelford, Douglas R. [drshackelford@NCSHP.ORG]\nFriday, March 05, 20109:57 AM\nINFOCNTR (PHMSA)\nFW: Interpretation\nCompleted via phone by RB on 3/5 @ 1020 am\nDear Sir:\nIn November 2009, I sent the below information in for an Interpretation.\nFrom conversation with folks that attended COMED it has been indicated the absence of the locking ring would not be\nrequired therefore resulting in a violation 177.834.\nI have not heard back yet of the official interpretation from your Section.\nPlease advise.\nLieutenant Shackelford\nFrom: Shackelford, Douglas R.\nSent: Friday, l\\Jovember 13, 2009 10:55 AM\nTo: 'infocntr@dot.gov'\nSubject: Interpretation\nDear Sir:\nI have a question in reference to 49CFR 177.834 when transporting 20lb propane gas cylinders. All the cylinders are\nstacked in approved recessed trays so the base of the cylinders about two inches deep. The next tray is placed on top of\nthat row and so on, however the final tray or top tray of cylinders have no devise on the top but are still recessed about\none and one half inches inside the tray.\nq\nI have pictures that can be sent or should I provide this question to another section of PHMSA?\nQuestion:\nThanks\nIs a locking ring required to encompass the top tray or will it comply with 177.834 without the ring?\nLieutenantD. :Jl. Sliacke!/ortf\nNorth Carolina State Highway Patrol\nMotor Carrier Enforcement Section\nAssistant MCSAP Administrator\nRaleigh, North Carolina\nOffice: (919) 715-8683 FAX (919) 715-8196\n1\n\n<<>>\n\nDrakeford, Carolyn (PHMSA)\nFrom: Shackelford, Douglas R. [drshackelford@NCSHP.ORG]\nSent: Friday, March 05, 2010 10:44 AM\nTo: INFOCNTR (PHMSA)\nSubject: FW: Lexmark Scan Attachment\nAttachments: document20 10-03-05-103004. pdf\nSir:\nPlease see the attached documents.\nThe first image is a picture of a locking ring designed by a private vender for use on the\ntop rack of cylinders being transported however the question remains. Is it required to be\nutilized on the top rack when the cylinders are recessed in the bottom tray about two inches\nas indicated in the other images to be in compliance with l77.834a?\nThanks\nLieutenant Shackelford\n-----Original Message----From:\nSent: FridaYJ March eS J 2ele le:3e AM\nTo: ShackelfordJ Douglas R.\nSubject: Lexmark Scan Attachment\nDO NOT REPLY TO THIS EMAIL.\n1\n\n<<>>\n\n10/11\n- 38.50 -\nPAGE\n1.00\n- 12.59\n- 13.25 tal\nФ8.94 12X\nR.25 TYP\n6.00\nIs this\nrequired to be\nutilized on top\nculinders fo\n8.00-\ncompliance of\nTRANAN\n49.50\n177.8340.\n12.50\nNOTE:\nTHIS RING IS TO BE USED\nIN CONJUNCTION WITH\nTS4253 TRAYS\n5173390459\nIF PRINTED, TO BE CONSIDERED AN UNCONTROLLED DOCUMENT\nUNLESS OTHERWEE SPECIFIED:\nHAME DAE TRAVEL STAR PRODUCTS\nTOLERANCES:\nDIVENIONS AREIN INCHES\nDRAWN\nREZ\n5/21/0S 8080X8S3, B05K84, IN. 46527\n6746330467\nANSULAR: 4f-1\nCHECKRY\nTITLE:\nTWO PLACE DECIAL +). 043° -\nONE PLACE DECIMAL +!-.125\nENG APPR.\n17:37\nTHREE PLACE DECIAL +1-315\nJARG APPR\nTSCPCYL-R12 CYLINDER RING\nFROPRIETARY AND CONFIDENTIAL\nCAVIES 7Y00\nTOOL HATE\nIOLERANCING PER.\nINTERFRET GEOMERIC\nQA\nDRAWING IS THE SOLE PROPERTY OF\nTHE INFORMATION CONTAINED IN THIS\nIOC. MATERIAL\n• MATERAL STARING ICINES\nCOMMENTS:\nPRASH\n.187\" BLACK PE\nSIZE DWG. NO.\nREV\nTRAVEL STAR PRODUCTS ANY\n89/89/2009\nWITHOUT THE WRITTEN PERMISSION OF\nREPRODUCTION IN PART OR AS WHOLE TOONE\nSMOOTH - SMOOTH\nA TSCPCYL-R12\nTRAVEL STAR PRODUCTS IS PROHIBITED.\nDO NOT SCALE DRAWING\nSCALE: 1:16 WEIGHT:\nSHEET 1 OF 1\n5\n\n<<>>\n\nCJ\n>t..'\" W\nc;:;\nct::\n.J..i\n.c\n.....;).,.\n\n<<>>\n\n\n\n<<>>\n\nExchange\nExchan\nEND HEROING INSTRUCT\nREMOVE THIS LABEL\nExpress:\n\n<<>>\n\nCran\n\n<<>>\n\n\n\n<<>>\n\n1F\n1F *\n1F 8\n18\n19\n20\nAFTER READ\n\n<<>>\n\nEtchant\n...:*::st\ns013\n\n<<>>\n\nWE CEREBRE INSTRUC\nExpress","truncated":false,"body_characters":6006}