{"operation":"document","citation":"PI-74-004","title":"Dallas Engineering, Inc. — Pipeline Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1974-01-24","effective_on":null,"summary":"PI-74-004 response to Dallas Engineering, Inc. concerning 192.465.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-74-004.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-74-004.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-74-004","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1974/PI74004.pdf","body":"<<<PAGE 1>>>\n\nJanuary 24, 1974\nMr. Dois D. Dallas\nPetroleum Engineer\nDallas Engineering, Inc.\nP.O. Box 594\nTioga, ND 58852\nDear Mr. Dallas:\nIn your letter of January 17, 1974, you ask what protection should be provided for insulated 3/4-\ninch metallic riser pipes. Risers are to be coated and cathodically protected as required by Section\n192.455. The level of protection must meet one or more of the criteria contained in Section\n192.463. The frequency for monitoring service risers is covered by Section 192.465.\nWe trust this answers your question. If you desire any further information, please advise.\nSincerely,\n\\signed\\\nJoseph C. Caldwell\nDirector\nOffice of Pipeline Safety\ndal\\192\\465\\74-01-24\n1\n\n<<<PAGE 2>>>\n\nDALLAS ENGINEERING, INC.\nJanuary 17, 1974\nMr. Joseph C. Caldwell, Director\nOffice of Pipe Line Safety\nOffice of the Secretary of Transportation\nWashington, D.C. 20590\nDear Mr. Caldwell:\nThank you very much for your letter amplifying the meaning of subpart I, #192.451.\nYou state that metallic components of plastic pipelines are subject to these requirements.\nAccordingly would you please advise what protection should be provided for insulated 3/4\"\nmetallic riser pipes (service lines) which extend under ground for a total distance of not more than\n3 feet?\nVery truly yours,\nDALLAS ENGINEERING, INC.\nDois D. Dallas\nPetroleum Engineer\ndal\\192\\465\\74-01-24\n2","truncated":false,"body_characters":1376}