{"operation":"document","citation":"PI-75-029","title":"Tennessee Public Service Commission< — Pipeline Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1975-06-09","effective_on":null,"summary":"PI-75-029 response to Tennessee Public Service Commission< concerning 192.63.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-75-029.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-75-029.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-75-029","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1975/PI75029.pdf","body":"<<<PAGE 1>>>\n\nJun 9 1975\nMr. John Searcy, Director\nEngineering Division\nTennessee Public Service\nCommission\nCordell Hull Building\nNashville, Tennessee 37219\nDear Mr. Searcy:\nThis responds to your letter of March 19, 1975, which references a proposed marking procedure\nfor use in compliance with 49 CFR 192.63. You ask whether pipeline components marked as\noutlined in the proposed procedure would meet the marking requirements of Section 192.63, or\nwhat changes in the procedure, if any, will be necessary to effect compliance.\nSection 192.63 requires that, except for certain items manufactured before November 12, 1970,\neach component used in a pipeline to which that Section applies must be marked as prescribed in\nthe specification or standard to which it was manufactured or MSS Standard Practice, SP-25.\nWe note that the proposed procedure primarily relates to color coding. This method of marking\ndoes not comply with Section 192.63 because it does not meet the requirements of applicable\nspecifications or standards to which components are manufactured or MSS Standard Practice SP-\n25. The procedure should be revised in accordance with applicable marking requirements to\neffect compliance with Section 192.63. Of course, in addition to the required markings, an\noperator may voluntarily use color coding to mark components for any purpose other than\ncompliance with Section 192.63.\nWe are also concerned that the proposed procedure would permit the use of unmarked pipe and\nnipples and other unmarked fittings. Components which are not marked in accordance with\nSection 192.63 may not be used in a pipeline to which that Section applies.\nYour further ask whether fittings, the manufacturer of which cannot be identified, may be used in\nany portion of a gas system subject to Section 192.63.\nFittings whose manufacturer cannot be identified may not be used in a pipeline to which Section\n192.63 applies because the name of the manufacturer is part of the required marking.\nIdentification\ndal\\192.1-b\\63\\75-06-09\n1\n\n<<<PAGE 2>>>\n\nof the manufacturer is also essential to application of the exception from marking under Section\n192.63(d).\nThank you for your continued efforts in pipeline safety.\nSincerely,\nJoseph C. Caldwell\nDirector\nOffice of Pipeline Safety\ndal\\192.1-b\\63\\75-06-09\n2","truncated":false,"body_characters":2292}