{"operation":"document","citation":"PI-71-075","title":"Indiana Public Service Commission — Pipeline Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1971-08-18","effective_on":null,"summary":"PI-71-075 response to Indiana Public Service Commission concerning 192.167.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-71-075.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-71-075.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-71-075","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1971/PI71075.pdf","body":"<<<PAGE 1>>>\n\nMr. D. J. Hendrickson\nIndiana Public Service Commission\n901 State Office Building\nIndianapolis, Indiana 46204\nDear Mr. Hendrickson:\nThank you for your letter of August 3, 1971, requesting an interpretation of §192.167 of 49 Code\nof Federal Regulations, Compressor station: emergency shut down.\nIn effect you ask two questions. The first is if a station is attended only during start up and shut\ndown and is totally unattended while in operation does it qualify as being unattended. The answer\nis yes. If personnel are not assigned to the station during the period of operation the station is\nunattended.\nThe second question you pose is whether the regulation applies to all compressor stations. Again\nthe answer is yes. The only compressor stations that are excepted are those that are unattended\nfield compressors of 1,000 horsepower or less. The use of the word field as a modifier is a carry\nover from §843.431 of the B31.8 1968 code. It denotes a compressor station that is used to\npump gas directly from a gathering system of a production field.\nWe hope that this interpretation will clarify the problems that you are having in understanding\n§192.167.\nSincerely,\nJoseph C. Caldwell\nActing Director\nOffice of Pipeline Safety\nDB\nC:\\WP51\\INTERPRT\\192\\167\\71-08-18\n1\n\n<<<PAGE 2>>>\n\nMr. Joseph C. Caldwell\nOffice of Pipeline Safety\nDepartment of Transportation\nWashington, D. C. 20590\nDear Mr. Caldwell:\nRe: CFR Part 192, Section 192.167; Compressor Stations; Emergency Shutdown\nWill you please give us an interpretation of the words \"unattached\" and \"field\"?\nIf a station is attended only during start-up and shut-down and is totally unattended while in\noperation does it qualify as being \"unattended\", or does it have to be completely remotely\noperated to be \"unattended?\"\nIt would be reasonable to assume that this requirement applies to all compressor stations---\ntransmission, distribution and storage field---so just what compressor stations are exempt as being\n\"field\" compressors?\nVery truly yours,\nD. J. Hendrickson\nDirector\nPipeline Safety Division\nDB\nC:\\WP51\\INTERPRT\\192\\167\\71-08-18\n2","truncated":false,"body_characters":2111}