{"operation":"document","citation":"PI-73-025","title":"Alabama Public Utilities Commission — Pipeline Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1973-09-26","effective_on":null,"summary":"PI-73-025 response to Alabama Public Utilities Commission concerning 192.465.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-73-025.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-73-025.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-73-025","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1973/PI73025.pdf","body":"<<<PAGE 1>>>\n\nSeptember 26, 1973\nMr. Larry E. Waldrop\nUtilities Engineer\nAlabama Public Utilities Commission\nP. O. Box 991\nMontgomery, AL 36102\nDear Mr. Waldrop:\nIn your letter of September 5, 1973, you raised a question concerning the requirements of\n§192.465(a) for monitoring of cathodic protection on separately protected service lines or short\nsections of mains, not in excess of 100 feet. The question asked was: If all these services are\ntested in 1973, can only 3 percent be tested in each year and then do 100 percent in 1983, or must\n10 percent of all these lines be tested each year?\nSection 192.465(a) states in part: \" . . . these service lines and mains may be surveyed on a\nsampling basis. At least 10 percent of these protected structures, distributed over the entire\nsystem, must be surveyed each calendar year, with a different 10 percent checked each subsequent\nyear, so that the entire system is tested in each 10-year period.\" The intent here is for the\noperator to obtain a representative sampling of conditions throughout his system annually. It is\nour contention that this representative sampling should be at least 10 percent, and a different 10\npercent each year so that the operator would be made aware of any condition occurring that could\nbe detrimental to public safety. The procedure described in your letter would not cover 10\npercent of the system each year and would not be considered a sampling survey. It would\ntherefore not meet the requirements.\nIf we may be of further assistance, please advise.\nSincerely,\nJoseph C. Caldwell\nDirector\nOffice of Pipeline Safety\nDB/dal/192.465\n73-09-26","truncated":false,"body_characters":1623}