{"operation":"document","citation":"PI-75-013","title":"Tennessee Public Service Commission — Pipeline Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1975-03-24","effective_on":null,"summary":"PI-75-013 response to Tennessee Public Service Commission concerning 192.63.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-75-013.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-75-013.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-75-013","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1975/PI75013.pdf","body":"<<<PAGE 1>>>\n\nMr. John S. Searcy, Director\nEngineer Division\nTennessee Public Service Commission\nCordell Hull Building\nNashville, Tennessee 37129\nDear Mr. Searcy:\nThis responds to you letter of February 20, 1975, asking whether the incorporation by reference\nof MSS-SP-25 un 49 CFR 192.63 includes the document MSS-SP-63 to the extent that it is\nincorporated by reference in Section 18 of MSS-SP-25.\nThe reference to MSS-SP-63 in Section 18 of MSS-SP-25 incorporates a portion of MSS-SP-63\nessential to the basic document MSS-SP-25. To the extent that MSS-SP-63 is incorporated by\nreference in MSS-SP-25, it is also incorporated in 49 CFR 192.63.\nSincerely,\n/Signed/\nJoseph C. Caldwell\nDirector\nOffice of Pipeline Safety\nDB\nC:\\WP51\\INTERPRT\\192\\63\\75-03-24\n1\n\n<<<PAGE 2>>>\n\nMr. Joseph Caldwell\nDept. of Transportation\nOffice of Pipeline Safety\n2100 2nd Street, SW\nWashington, D. C. 20590\nDear Mr. Caldwell:\nRegulation 192.63(a) states that \"Except as provide in paragraph(d) ... each valve, fitting,\nlength of pipe, and other component must be marked as prescribed in-(1) The specification to\nwhich it was manufactured; or (2) MSS...SP-25.\"\nSection 18 of MSS SP-25 states \"Fittings for use in gas transmission and distribution\nsystem...(18.1) Markings for these fittings shall be those shown in MSS SP-63.\"\n192.63 does not specifically reference MMS SP-63, which, from the title, applies only to high\nstrength wrought welding fittings. It is a correct interpretation that MSS SP-63 is not\nautomatically incorporated, and that MSS SP-25, not MSS SP-63, would govern the marking of\nfittings for use in gas transmission and distribution?\nSincerely,\nJohn S. Searcy, Director\nEngineering Division\nDB\nC:\\WP51\\INTERPRT\\192\\63\\75-03-24\n2","truncated":false,"body_characters":1729}