{"operation":"document","citation":"PI-72-027","title":"Pioneer National Gas Company — Pipeline Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1972-07-13","effective_on":null,"summary":"PI-72-027 response to Pioneer National Gas Company concerning 192.327.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-72-027.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-72-027.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-72-027","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1972/PI72027.pdf","body":"<<<PAGE 1>>>\n\nMr. R. C. Roland\nPioneer National Gas Company\nP.O. Box 511\nAmarillo, Texas 79105\nDear Mr. Roland:\nThis is in response to your letter dated June 7, 1972, regarding interpretations of Section\n192.327(a) and Section 192.113.\nRegarding Section 192.327(a), your specific question asked that if there was 10\" of normal soil\nand consolidated rock under take, would be required minimum cover for Class 1 location be (a)\n28\" or (b) 18\" and for Class 2, 3, and 4 locations would it be (c) 34\" or (d) 24\"?\nAnswer: The required minimum cover for a buried transmission line under Section 192.327(a) if\nthere is a combination cover of normal soil over consolidated rock, is either a total cover of 30\ninches or an 18 inch cover of consolidated rock, Similarly, the Class 2, 3 and 4 locations and\ndrainage ditches of public roads and railroad crossings that have a combination cover of normal\nsoil over consolidated rock, must have a total cover of 36 inch or a 24 inch cover of consolidated\nrock.\nTherefore, with reference to your specific question, the 18 inch of consolidated rock cover in\nexample (a) meets our minimum requirements for a Class 1 location. The additional 10 inch of\nnormal soil is in excess of this minimum requirement. The example (b) does not meet the\nminimum cover requirements of either a total cover of 30 inches or an 18 inch cover of\nconsolidated rock. The 24 inch cover of consolidated rock in example (c) meets our minimum\nrequirements for a Class 2, 3, and 4 locations. The additional 10 inches of normal soil are in\nexcess of this minimum requirement. The example (d) does not meet the minimum cover\nrequirements of either a total cover of 36 inches or a 24 inch cover of consolidated rock.\nRegarding Section 192.331, your specific question asked if continuous weld pipe should be\nconsidered the same as ASTM-A53 furnace butt welded or API-5L furnace butt welded pipe for\nestablishing a joint factor.\nAnswer: Yes, the longitudinal joint factor for ASTM-A53 furnace butt welded or API-56 furnace\nbutt welded pipe should be used for continuous weld pipe.\nWe trust that this answers your particular question. If we can be of further service, please let us\nknow.\nSincerely,\nDB\nC:\\WP51\\INTERPRT\\192\\327\\72-07-13\n1\n\n<<<PAGE 2>>>\n\n/signed/\nJoseph C. Caldwell, Director\nDB\nC:\\WP51\\INTERPRT\\192\\327\\72-07-13\n2","truncated":false,"body_characters":2330}