{"operation":"document","citation":"PI-72-0117","title":"Pipeline Safety Interpretation PI-72-0117","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1972-11-10","effective_on":null,"summary":"PI-72-0117 concerning 192.325.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-72-0117.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-72-0117.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-72-0117","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1972/g72-11-10_Paul_192.325-nlmx.pdf","body":"<<<PAGE 1>>>\n\nPI-72-0117\nInternational Management and Engineering Group of Britain LTD.\n7-8 Savile Row\nLondon\nW1X 2 DR\nNovember 10, 1972\nU. S. Department of Transportation\nOffice of Pipeline Safety\nWashington D. C. 20590\nU. S. A.\nDear Sirs,\nFederal Safety Standards for Gas Lines\nWe have tried through various agencies to obtain a telex address for your organisation 'without success'.\nFollowing is the text of a message addressed to the Office of Pipeline Safety via Coast Guard H. Q. Washington D. C.\n‘To U. S. Dept. of Transportation, Office of Pipeline Safety, Washington D. C.\nSubject: minimum separation distance between large diameter natural gas transmission pipelines on common right-of-\nway stop We intend to lay 40 inch API 5LX60 pipeline alongside operating 40 inch API 5LX60 pipeline on existing right-of-\nway in middle east country stop Maximum operating pressure 950 PSI at 0.72 design factor stop Design and construction\nare required to comply with D. O. T. minimum safety standards stop may we have your interpretation and comments to\nfollow questions:-\n1 ) What is minimum distance between centreline new pipeline and centreline existing pipeline?\n2 ) What is minimum distance for heavy construction equipment from existing operating line stop depth of cover is\n36 inches.\n3 ) At what distance from operating line could rock blasting be permitted.\nTrust you can assist us in this matter and can advise by return telex.\nIMEG of Britain Ltd. London Telex 263508 / I. Paul.’\nWe would appreciate your answer to the above questions. Please also advise if you can be reached by telex.\nYours faithfully,\nI Paul.\n\n<<<PAGE 2>>>\n\nTelegraphic message\nOffice of Pipeline Safety\nDepartment of Transportation\n400 Sixth Street, S.W.\nWashington, D.C. 20590\nDate Prepared 11/16/72\nTo: IMEG of Britain Limited\nLondon Telex 263508\nAttention: I. Paul\nReference your telegram of November 8, 1972, requesting interpretation and comments regarding construction of\nparallel large diameter natural gas transmission pipelines on common right of way. Department of Transportation safety\nstandards do not specify minimum distance between pipeline centerlines, minimum distance for heavy construction\nequipment from existing operating line, or distance from operating line that rock blasting is permitted. Distances are\ndetermined by the builder based on practical considerations of experience, safety, construction costs, maintenance ease\nand need for cathodic protection as appropriate. Section 192.325(a), on underground clearance in general construction\nrequirements, provides that each transmission line must be installed with at least 12 inches of clearance from any other\nunderground structure, or provided with protection from damage that might result from proximity to other structure.\nJoseph C. Caldwell\nDirector, Office of Pipeline Safety, TSA-30\nOffice of the Secretary\nDepartment of Transportation","truncated":false,"body_characters":2899}