{"operation":"document","citation":"05-0087","title":"G & C Kinney, Inc. — Hazardous Materials Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"2005-05-10","effective_on":null,"summary":"05-0087 response to G & C Kinney, Inc. concerning 180.205.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-05-0087.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-05-0087.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-05-0087","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2005/050087.pdf","body":"<<<PAGE 1>>>\n\nof Transportation\nU.S. Department\n400 Seventh Street, S.W.\nWashington, D.C. 20590\nPipeline and\nHazardous Materials Safety\nAdministration\nMAY 10 2005\nMr. Glen L. Kinney\nRef. No. 05-0087\n306 Cutter Cove\nG & C Kinney, Inc.\nStafford VA 22554\nDear Mr. Kinney:\nThis responds to your telephone conversation with Mr. Ryan Posten, Exemptions\nProgram Officer, Office of Hazardous Materials Exemptions and Approvals, requesting\nclarification of the requirements under the Hazardous Materials Regulations (HMR; 49\nCFR Parts 171-180) concerning calibration verification of equipment used for volumetric\nexpansicn tests for DOT specification cylinders. Specifically, you ask whether the\nmaximum pressure at which the verification test is being conducted (for example, 3,000\npounds) must be maintained at the final pressure for 30 seconds or whether the pressure\nmay be allowed to drop between 2 psi and 10 psi.\nOverall, for any pressure test (calibration or production retest), the 30-second hold time\nbegins only when the cylinder has completed its expansion. If the cylinder pressure\nthe hold time must be restarted or the test would be considered invalid.\ndrops by any measurable amount (such as 2 psi) during the recorded 30-second hold time,\nI hope this information is helpful. If you need additional information, please do not\nhesitate to contact this office.\nSincerely,\nHattie L. Mitchell\nChief, Regulatory Review and Reinvention\nOffice of Hazardous Materials Standards\n180.205\n050087\n\n<<<PAGE 2>>>\n\nG & C KINNEY, INC.\n306 Cutter Cove, Stafford VA 22554\nPhone: (540) 659-3701\nFax: (540) 659-0017\nE-Mail: gandckinney@aol.com\nApril 4, 2005\nMCIntyre\nUS Department of Transportation\n§180.205\nRegulatory Review and Reinvention\nResearch and Special Programs Administration\nOffice of Hazardous Materials Standards\nCylinders\n05-0087\nWashington DC 20590\nAttn: Hattie L. Mitchell\nDear Ms. Mitchell:\nThis is a request for interpretation of CFR 49 part 180.205 (g), (3), (4) and (5) with reference\ncalibration verification of the test equipment used for volumetric expansion tests of DOT pressure\ncylinders.\nOperators of DOT facilities that use computerized hydrostatic testing equipment have stated the\nfollowing: During system calibration verification (required by CFR 49 Part 180 (g) (3), (40, and (50)\nwhile pressurizing the calibrated cylinder to the maximum pressure to be tested the maximum pressure\nshould be exceeded by 10 PSI to allow for some leakage that may take place at that pressure. In other\nwords, if the desired verification pressure is 3000 pounds the calibrated cylinder should be pressurized\nto 3010 pounds and if the pressure does not fall below 3000 pounds, during the 30 seconds hold time\nrequired by CFR 180.205 (g) (5), the test is considered acceptable.\nIn reviewing the written instructions furnished with the equipment I have not been able to find any\nreference to such a procedure. In telephone conversations with the manufacturers, I have been\ninformed that these systems can not be manufactured to be totally leak proof at the higher pressures\nand that these minute leaks will not show up in the older systems (burettes and weight bowl systems).\nPart 180.205 (g) (5) States; Minimum test pressure must be maintained for at least 30 seconds and as\nlong as necessary for complete expansion of the cylinder.\nQuestion: Does this section of part 180.205 (g) (5) apply to the calibration verification portion\nbeing conducted at (i.e. 3000lbs) be maintained at that final pressure (i.e. 3000 lbs.) for 30 seconds o\n180.205 (g) (3) and (4)) of the rule? By that I mean, must the maximum pressure the verification is\ncan it be allowed to drop between 2 and 10 PSI and still be considered acceptable for verification?\nSincerely,\nElen\nI. Keeney\nGlen L. Kinney\nPresident","truncated":false,"body_characters":3786}