{"operation":"document","citation":"PI-74-0156","title":"Arizona Corporation Commission — Pipeline Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1972-12-27","effective_on":null,"summary":"PI-74-0156 response to Arizona Corporation Commission concerning 192.707.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-74-0156.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-74-0156.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-74-0156","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1974/g74-12-27_Garabrant_192.707-msfx.pdf","body":"<<<PAGE 1>>>\n\nPI-74-0156\nDecember 27, 1974\nH. R. Garabrant, P.E.\nGas Utilities Safety Engineer\nArizona Corporation Commission\n1688 West Adams\nPhoenix, AZ 85007\nDear Mr. Garabrant:\nThank you for your letter of December 9, 1974, suggesting that an enclosed line marking sign currently used by the\nSouthwest Gas Corporation be permissible under the line marking requirements being considered by this office for\ndistribution lines.\nLine marking requirements for distribution lines were proposed by notice in the Federal Register on May 25, 1972 (copy\nenclosed). We expect to issue a final rule on the subject as soon as the Technical Pipeline Safety Standards Committee\nprepares its report on the technical feasibility, reasonableness, and practicability of the proposed rule.\nThe sign appears to meet the proposed requirements in all respects except that it reads \"Warning Gas Line\" rather than\n\"Warning Gas Pipeline\" as proposed. If the proposed wording is adopted, the company may wish to apply for a waiver\nto sanction the use of the sign after the new rule is effective.\nSincerely,\nJoseph C. Caldwell\nDirector\nOffice of Pipeline Safety\n\n<<<PAGE 2>>>\n\nArizona Corporation Commission\n1688 West Adams\nPhoenix, Arizona 85007\nDecember 9, 1974\nMr. Joseph C. Caldwell\nOffice of Pipeline Safety\nDepartment of Transportation\nWashington, D.C. 20550\nDear Mr. Caldwell:\nAt the recent seminar held in Arizona, I learned from Jim Thomas that the Office of Pipeline\nSafety was considering the desirability of pipeline markers for certain distribution lines.\nI would appreciate it when a description of the marker is defined that it does not rule out a\nmarker such as I have enclosed.\nThis marker, although not shown as a standard in many of the mail order sign company\ncatalogues which provide signs mostly in compliance with OSHA's standards, is actually better for\ncertain uses in my opinion than some of the \"Danger Gas Line\" signs that they offer which may be\ngood for other purposes.\nSome of the reasons whereby I think the enclosed sign is more desirable for the prevention\nof third party damage are as follows:\n1. The sign specifically gives instructions what to do if digging is contemplated.\n2. The sign gives the telephone number and name of the company owning the\nline.\n3. The shape of the sign is less vulnerable to damage by bending due to its shape.\n4. The sign does not seem to be as attractive a target for rifle or pistol fire as a white\nsquare or larger horizontal retangular sign. (In this State vandalism of signs by rifle\nfire is still an expensive maintenance problem0\n5. Sign is low cost and easily installed on a metal sign post.\nAlthough the company utilizing this sign does not have transmission lines in this State by DOT\nstandards, they have been marking their distribution lines in vulnerable locations with this sign - The\nprocedure and sign which, as State Gas Utility Safety Engineer, I endorse as a good safety measure.\nSincerely,\nARIZONA CORPORATION COMMISSION\nH. R. Garabrant, P.Er.\nGas Utilities Safety Engineer","truncated":false,"body_characters":3033}