{"operation":"document","citation":"PI-74-0102","title":"Alabama Public Service Commission — Pipeline Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1974-01-25","effective_on":null,"summary":"PI-74-0102 response to Alabama Public Service Commission concerning 192.123.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-74-0102.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-74-0102.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-74-0102","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1974/g74-01-25_Waldrop_192.123%20-%20lmxs.pdf","body":"<<<PAGE 1>>>\n\nPI-74-0102\nJanuary 25, 1974\nMr. Larry E. Wladrop\nAlabama Public Service Commission\nP.O. Box 991\nMontgomery, AL 36102\nDear Mr. Waldrop:\nYour letter to Mr. Frank Fulton dated January 7, 1974, asked if certain service risers made for use with plastic service\npiping would meet Office of Pipeline Saftety’s regulations. You specifically named items made by Perfection\nCoprporation and Kerotest Manufacturing Corporation, both of which consist of a metal sheath used as a protective\nshield over a plastic service riser assembly. From the information provided it appears that if these risers are installed so\nthat all the below ground gas containing materials are plastic, no cathodic protection is required. The metallic sheath is\nnot considered part of a pipeline as that term is defined in Section 192.3 of the Federal safety standards. However, the\ninstallation must still comply with the requirements of Section 192.375, Service lines: plastic, and the limitations of\nSection 192.123, Design limitations for plastic pipe, are applicable.\nThank you for your interest. We trust this answers your question satisfactorily.\nSincerely,\nCESAR DE LEON\nJoseph C. Caldwell\nDirector\nOffice of Pipeline Safety\n\n<<<PAGE 2>>>\n\nState of Alabama\nAlabama Public Service Commission\nP.O. Box 991\nMontgomery, Alabama 36102\nJanuary 7, 1974\nMr. Frank Fulton, Chief Engineer\nOffice of Pipeline Safety\nDepartment of Transportation\nWashington, D. C.\nDear Mr. Fulton:\nAs per our conversation this date on whether or not the riser put out by the Perfection Corporation would meet\nOPS's regulations, enclosed is the material that I have on this riser. I am also enclosing a riser put out by Kerotest\nManufacturing Company.\nWe would like your opinion at your earliest convenience as to whether either, both, or none of these risers\nwould meet OPS's regulations. Your prompt reply would be appreciated.\nYours very truly,\nLarry E. Waldrop\nUtilities Engineer\n\n<<<PAGE 3>>>\n\nPower, Water & Gas Department\nPost Office Box 580\nSheffield, Alabama 35660\nDecember 20, 1973\nMr. Larry E. Waldrop\nUtilities Engineer\nAlabama Public Service Commission\nP. 0. Box 991\nMontgomery, Alabama 36102\nDear Larry:\nYou will recall some discussions that we have had recently regarding service risers and some of the questions that have\nbeen raised regarding pressurized risers, plastic insertion, temperature rise, etc. Jerald Mitchell has been interested in\nthis subject and has had considerable discussion with us during recent visits and phone conversations.\nOne item that we have all been particularly interested in is a prefabricated riser produced by Perfection Corporation and\ndistributed by Mike Deason with Empire Pipe and Supply Company, Inc. of Birmingham, Alabama.\nMike is an excellent salesman, and I think had convinced us that the Perfection riser answered all of our problems,\nincluding the need for cathodic protection on the riser.\nI felt that this item might indeed solve some of the problems involved with plastic services and understood from Mike\nthat the item does meet all of the Department of Transportation requirements. However, to be on perfectly safe\nground, I asked that Perfection Corporation provide us with evidence from DOT that this riser is approved by them.\nI enclose a copy of a letter in response to my inquiry, and my reaction to the letter is that I am highly disappointed\nbecause it indicates to me no approval by DOT whatever.\nI should appreciate very much having comments from you and Jerald regarding your interpretation of the content of the\nletter and what your reaction to the use of this item would be.\nVery truly yours,\nR. A. Azbell , General Manager\n\n<<<PAGE 4>>>\n\nPerfection Corporation\nMadison, Ohio 44057\nDecember 14, 1973\nCity of Sheffield, Alabama\nPower, Water and Gas Department\nSheffield, Alabama 35660\nAttention: Mr. R. A. Azbelle\nGeneral Manager\nDear Mr. Azbelle:\nWe have been asked by our representative, Mr. Mike Deason of Empire Pipe and Supply, Birmingham, Alabama, to\nrelate to you why our Perfection service line riser does not need to be cathodically protected.\nIt is in our estimation, the steel in this service line riser acts as no more than a protective shield for the plastic contained\ntherein, and it is not considered a part of the pipe line as that term is defined in Section 192.3 of the Federal safety\nstandards. Of course, that particular portion of the service line riser that carries gas is above ground, and there are no\nD.O.T. requirements that we know of that require to cathodically protect a gas carrier, be it steel or any other material,\nthat is above ground.\nWe hope this has answered your inquiry satisfactorily, and we thank you for your continued interest in Perfection\nCorporation products. If there are any more questions, feel free to call us at any time.\nSincerely,\nPerfection Corporation\nJ. Edward Matz\nGeneral Sales manager\nTHE RIZER-FLEX OFFERS THESE ADVANTAGES:\nI. Installation:\n1. Adjusts to trench depth.\n2. Plastic pipe can be slipped through RIZER-FLEX while straight and then bent without kinking.\n3. The union nut permits a fast connection under varied field conditions.\n4. Particularly adaptable to service insert renewals.\nII. Safety:\n1. RIZER-FLEX adjusts to soil movement and other secondary loads.\n2. Flexibility relieves strain on meter set.\n3. No underground transition fitting.","truncated":false,"body_characters":5347}