{"operation":"document","citation":"12-0202","title":"NK CO., LTD — Hazardous Materials Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"2012-10-18","effective_on":null,"summary":"12-0202 response to NK CO., LTD concerning 178.37.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-12-0202.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-12-0202.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-12-0202","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretations/2012/120202.pdf","body":"<<>>\n\nU.S. Department\nof Transportation\nPipeline and Hazardous\nMaterials Safety · ·\nAdministration\n1200 New Jersey Avenue SE\nWashington. DC 20590\nOCT 1 8 2012\nMr. Hyun-Joon Ji\nAssistant Manager\nQuality Inspection Team\nNKCO.,LTD\n497, Sinpyeong-dong, Saha-gu,\nBusan 604-030, Korea\nRef. No.: 12-0202\nDear Mr. Ji:\nThis is in response to your September 10,2012 email concerning the requirements for\ncylinders in accordance with the Hazardous Materials Regulations (HMR; 49 CFR Parts\n171-180). Specifically you request confirmation of your understanding of the appropriate\nlot size for conducting the physical tests on DOT 3AA and DOT 3AAX cylinders.\nAs provided in§ 178.37(k), a physical test must be conducted to determine the yield\nstrength, tensile strength, elongation and reduction of area of material. The test is required\non two specimens cut from one cylinder taken at random out of each lot of 200 or less.\nAlternatively, for lots of thirty or less, the physical tests are authorized to be made on a\nring at least 8 inches (20 em) long cut from one cylinder and subjected to the same heat\ntreatment as the finished cylinder(s).\nI hope this information is helpful. If you have further questions, please do not hesitate to\ncontact this oftice.\nDelmer Billings\nSenior Regulatory Advisor\nStandards and Rulemaking Division\n\n<<>>\n\n1 eary\nDrakeford, Carolyn (PHMSA)\n3178.34\nFrom:\nSent:\nBetts, Charles (PHMSA)\nSubject:\nTo:\nMonday, September 10, 2012 10:32 AM\nDrakeford, Carolyn (PHMSA)\nCylinders\nFW: [FW]:RE: A inquire related to DOT Audit at NK-Korea\n12-0202\nImportance:\nHigh\nCarolyn -\nPlease log and assigned to Kevin for response.\nThanks,\nCharles\nFrom: hjji@nkcf.com [mailto:hjji@nkcf.com]\nSent: Monday, September 10, 2012 8:19 AM\nTo: Betts, Charles (PHMSA)\nCc: Chaney, Wayne (PHMSA); Lynch, Tom (PHMSA)\nSubject: [FW]: RE: A inquire related to DOT Audit at NK-Korea\nDear Mr. Charles Betts,\nThis is a personnel (Mr. Hyun-Joon Ji) in charge of Q.C of NK CO in South Korea.\nRecently our company has had a fitness inspection for approvals of DOT specification and UN ISO cylinder.\nDuring the fitness inspection we have inquired of DOT investigators about a lot size in the heat treatment process\nand we could get\na reply from them that a lot size could be maximum 200 as long as it is subject to the same heat. Also one test\nring could be applied to a lot\nof 30 or less as long as it represents the same heat. Therefore we would like to get your official confirmation to\nclarify a lot size according to\nthe e-mail below. Please kindly let us know your reply about our question.\nBest Regards,\n********\n*******\nHyun-Joon Ji, Assistant Manager (7/51 ECH21)\nNA CO. LTD / (70301\nDirect : +82 (0)51 899 0112 / Fax. +82 (0)51 832 0135\nMobile: +82 (0) 10 8382 3533\nE-mail : hiji@nkcf.com\n*******\n• Original Message\nFrom : \nTo : \n1\n\n<<>>\n\nCC : \nSent : 2012-09-08 1:53:04 AM\nSubject : RE: A inquire related to DOT Audit at NK-Korea\nMr. Hyun-Joon Ji,\nYou are correct in the email below, you can have a lot size of 200 or less, also in talking with one of our PHMSA\nengineers one ring could be used for a lot as long as it represents the same heat for the lot of 30 or less. As an senior\nenforcement investigator my personal interpretation cannot be used as an official interpretation there for it is best that you\nrequest an official interpretation from PHMSA Standards. The person to contact is Mr. Charles Betts at email\nCharles.betts@dot.gov. you may forward my email as well. I have talked with Mr. Glenn Foster, Chief, Regulatory\nReview and Reinvention Standards, and he has been made aware of your email to me.\nBest regards\nWayne\nWayne E. Chaney\nSr. Hazrdardous Material Investigator/\nCylinder Program Manager\nEast Building, PHH -40\n1200 New Jersey Ave, SE\nWashington, DC 20590-0001\n202 834-3568 Fax: 404 393-9552\nwayne.chaney@dot.gov\nFrom: hjji@nkd.com [mailto:hjji@nkd.coml\nSent: Wednesday, September 05, 2012 5:39AM\nTo: Chaney, Wayne (PHMSA)\nSubject: A inquire related to DOT Audit at NK-Korea\nDear Mr. Chaney,\nWe always thank for your help.\n2\n\n<<>>\n\nCould you please let us get your reply to below e-mail?\nWe are sorry to bother you with this question again. This is NK's important concerns and we very appreciate if\nyou reply to us about it.\nBest Regards,\n*****************************************************\nHyun-Joon Ji, Assistant Manager (118 2 CH21)\nNA COLD LD/(7)30\nDirect : +82 (0)51 899 0112 / Fax. +82 (0)51 832 0135\nMobile: +82 (0)10 8382 3533\nE-mail : hiji@nkcf.com\n******************************\n**************\n• Original Message--\nFrom : CN=T|#=/OU=10928/O=nke\nTo : Wayne.Chaney@dot.gov\nCC :\nSent : 2012-09-03 5:08:21 PM\nSubject : A inquire related to DOT Audit at NK-Korea\nDear Mr. Chaney,\nWe are looking forward to getting a good result for the fitness inspection. By the way, now we plan to revise the\n\"Lot control procedure\"\nto reflect a lot size (maximum 200) of heat treatment based on the point that you advised during NK's question\ntime at the end of the audit.\nAt first NK have defined a lot size as two cylinders having the same heat number and the same heat treatment\ncondition.\nTherefore NK have attahced a test ring every two cylinders and then would conduct the physical tests with the\ntest ring.\nHowever, I believe that this is very inefficient LOT composition considering the DOT regulation § 178.37 (The\nphysical tests are authorized to conducted on a test ring for lot of 30 maximum). So prior to a revision of our\nprocedure I would like to get your agreement with settling\na lot size by maximum 30 cylinders as long as cylinders have the same heat number and heat treatment condition\nin the heat treatment process. Please kindly let us get your confirmation if you don't have any comments.\nBest Regards,\n3\n\n<<>>\n\n*******\nHyun Joon Ji, Assistant Manager (16 82 12)\nDirect : +82 (0)51 899 0112 / Fax. +82 (0)51 832 0135\nMobile: +82 (0)10 8382 3533\nE-mail : hiji@nkcf.com\n***************************\n********\n• Original Message--\nFrom : \nTo : \nCC : \nSent: 2012-08-27 9:49:35 PM\nSubject : RE: NK Corrective Action related to DOT Audit at NK-Korea\nThank you for the corrective actions as submitted, once the lIA testing is complete I will inform you of the results of your\nfitness inspection.\nR/\nWayne\nWayne E. Chaney\nSr. Hazrdardous Material Investigator/\nCylinder Program Manager\nEast Building, PHH-40\n1200 New Jersey Ave, SE\nWashington, DC 20590-0001\n202 834-3568 Fax: 404 393-9552\n\n<<>>\n\nwayne. chaney@dot. gov\nFrom: hjji@nkd.com [mailto:hjji@nkd.coml\nSent: Sunday, August 26, 2012 10:31 PM\nTo: Chaney, Wayne (PHMSA)\nCc: Lynch, Tom (PHMSA)\nSubject: NK Corrective Action related to DOT Audit at NK-Korea\nDear Mr.Chaney,\nPlease review NK's corrective action for your findings during the audit for NK in Korea.\nFinding #1) Application for 3AA/3AAX/3T does not show hold points for I lA Witnessing.\nCorrective Action) Flow chart for DOT3AA/3AAX/3T has been revised in order to reflect DOT comment by adding\nIndependent Inspector's Inspection point (Verify, Witness).(See Attachment #1\nFinding #2) Failure to calculate proper wall thickness.\nCorrective Action) NK has measured the actual wall thickness for raw material at the time of receiveing inspection\nand recorded\nthe actual wall thickness on receiving inspection check sheet. As per your\ncomment\nNK will calcuate the wall stress by measuring actual wall thickness for each\nLOT, but not simply\nuse the wall thickness mentioned in the Drawing.{See Attachment #2)\nFinding #3) Chemical analyses should be accomplish upon arrival of material.\nCorrective Action) NK modified the Flow Chart for Manufacturing and Inspection and Traveller Sheet according to\nDOT's comment.\n5\n\n<<>>\n\nSo chemical Analyses will be conducted based on each heat of material at the\nstage of receiving inspection of the material.\n(See Attachment #1)\nFinding #4) Ensure hydrostatic retesting is performed using equipment proven to be within 1% accuracy.\nCorrective Action) NK has found the cause of failure to meet 1% accuracy requirement of the equipment and then\nrepaired it.\n(See Attachment #3)\nFinding #5) Failure to hold hydrostatic test pressure for at least 30 sec on longer to reach full expansion.\nCorrective Action) NK has holded the hydrostatic test pressure for at least 30 sec for only manufactured\ncylinders not a calibration cylinder.\nHowever NK has taken action to apply holding time for at least 30 sec for\nthe each pressure level of the calibration\ncylinder as weii.(See Attachment #4)\nFinding #6) For Jumbo Hydrostatic Retesting & Testing records missing calibration cylinder serial number\nused to calibration system.\nCorrective Action) NK has recorded the calibration cylinder number on the test records and to prevent any\nrepetiton,\nthe tester and Q.C inspector have been trained for the requirement. (See\nAttachment #4,6)\nFinding #7) Records missing elastic & permanent expansion on calibration sheets\nCorrective Action) NK has trained the test operators to record elastic & permanent expansion on the test record.\n(See Attachment #6)\nFinding #8) Test records of Jumbo & Medium must have legible identification of the test operator.\nCorrective Action) NK Q.M has performed necessary training to the Inspector and Tester to legible identification\non the Record/Report by their registered identification such as clearly spelled\nout name\n6\n\n<<>>\n\nand signature registered. (See Attachment #5, 6)\nFinding #9) Test records must record actual test pressure applied to each cylinder.\nCorrective Action) NK has trained the test operators to record the actual test pressure on the test record when\nhydrostatic test is conducted.\n(See Attachment #6)\nFinding #10) Retest records missing actual dimensions of cylinder.\nCorrective Action) NK has trained the test operators to record the actual dimensions on the test record. (See\nAttachment #6)\nFinding #11) Observed DOT-SP 14003 & DOT E10945 composit cylinders being retested at\nfacility under Korean Standards, cylinder should meet All DOT Requirement under\nthe special permits.\nCorrective Action) NK has conducted the retest of composit cylinders according to the customer request that is\nrequired\nto NK follow only Korean Standard not DOT regulation.\nWe NK Q.M Div. have well trained about those requirement and will implement above mentioned element and\ncorrective action immediately to the production and Inspection of DOT Cylinder.\nIf you have any question, please let us know.\nAttachment\n1: Manufacturing Process Flow Chart & Traveller Sheet -4 pages\n2: Receiving Inspection Report - 1 page\n3: Verification for proving 1% Accuracy of the Hydro Test Machine. - 9 pages.\n4: High and Low seting -Calibration of test system -1 page\n5: Log of Signature Registered for Inspection and Test Personnel - 1 page\n6: Training Record for DOT comments. - 1 page\n*****************************************************\nDirect: +82 (0)51 899 0112 / Fax. +82 (0)51 832 0135\nMobile: +82 (0)10 8382 3533\n7\n\n<<>>\n\nE-mail : hjji@nkcf.com\n*********************************\n**********\n8","truncated":false,"body_characters":11157}