{"operation":"document","citation":"PI-79-022","title":"Kansas Public Service Company, Inc. — Pipeline Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1979-07-23","effective_on":null,"summary":"PI-79-022 response to Kansas Public Service Company, Inc. concerning 192.161.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-79-022.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-79-022.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-79-022","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1979/PI79022.pdf","body":"<<<PAGE 1>>>\n\nMr. William C. Salone, III\nVice President & General Manager\nKansas Public Service Company, Inc.\n733 Massachusetts\nLawrence, Kansas 66044\nDear Mr. Salome:\nThis refers to your letter of March 9, 1979, regarding safety recommendations made to your\ncompany in NTSB's report No. PAR-78-4. In connection with certain recommendations about\nthe use of anchors to prevent the pullout of plastic pipe from mechanical fittings, you have asked\nwhat constitutes an \"anchor\" and whether any transition couplers on the market can be considered\nan \"anchor.\"\nThe Federal safety standards for gas pipelines (CFR Part 192) do not define the term \"anchor,\"\nalthough it is used in Section 192.161(e). This rule provides that \"Each underground pipeline that\nis connected to a relatively unyielding line or other fixed object must have enough flexibility to\nprovide for possible movement, or it must have an anchor that will limit the movement of the\npipeline.\" The purpose of this rule is to ensure that a pipeline is not damaged by anticipated\nmovement. Since this objective may be accomplished by holding the pipeline in place, an\n\"anchor\" would comprise any method by which the pipeline is firmly fixed to limit movement,\nincluding, if the anticipated movement is due to pullout forces, the use of properly designed and\ninstalled couplers.\nVarious manufacturers are producing couplers which can restrain the movement of plastic pipe\nwithin design limits and satisfy Section 192.161(e).\nI hope this reply has been responsive to your inquiry. If we can be of further assistance, please do\nnot hesitate to contact us again.\nSincerely,\n/signed/\nCesar DeLeon\nAssociate Director for\nPipeline Safety Regulation\nMaterials Transportation Bureau\nDB\nC:\\WP51\\INTERPRT\\192\\161\\79-07-23\n1\n\n<<<PAGE 2>>>\n\nMr. L. D. Sautman\nMaterials Transportation Bureau\nDepartment Of Transportation\nWashington, D. C. 20590\nDear Mr. Sautman:\nOur firm had a pipeline accident in December of 1977 and we are well along on complying with\nthe recommendation made by the NTSB. One of the important points related to plastic to steel\n\"anchors\" and I feel that we need a rather firm answer as to what constitutes an \"anchor\" and\nwhether any transition couplers on the market can be considered an \"anchor.\"\nWe would appreciate any information on this matter or specific recommendations. I understand\nother gas distribution systems are deeply interested.\nVery truly yours,\nKANSAS PUBLIC SERVICE CO., INC.\nWilliam C. Salome, III\nVice President & General Manager\nDB\nC:\\WP51\\INTERPRT\\192\\161\\79-07-23\n2","truncated":false,"body_characters":2554}