{"operation":"document","citation":"PI-79-007","title":"Quality Systems Incorporated — Pipeline Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1979-03-16","effective_on":null,"summary":"PI-79-007 response to Quality Systems Incorporated concerning 195.228.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-79-007.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-79-007.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-79-007","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1979/PI79007.pdf","body":"<<<PAGE 1>>>\n\nMarch 16, 1979\nMr. John C. Wormeli, President\nAlaska Welding Center\nQuality Systems Incorporated\n645 G Street, Suite 202\nAnchorage, Alaska 99501\nDear Mr. Wormeli:\nThis responds to your request for an interpretation of 49 CFR\n195.228 dated March 8, 1979. Your request was in two parts:\nQuestion: The alternative which is to be followed when\ndetermining weld acceptability in the event that the pipe\ndiameter is such that visual inspection of the root area is not\npossible as allowed in Paragraph (b)(1) of Section 195.228.\nAnswer: When depth of undercutting adjacent to the root bead is\nnot visually determined by use of a depth measuring device as set\nforth in Section 195.228(b)(1), then only the length requirement\nof Subsection 6.9 of the 1973 edition of API Standard 1104\napplies. The length requirement states that undercutting\nadjacent to the root bead shall not exceed 2 inches in length or\n1/6 of the length of the weld, whichever is smaller.\nQuestion: The alternative which is to be followed when\ndetermining weld acceptability in the event that tie-ins are not\naccessible for visual inspection.\nAnswer: The depth of undercutting adjacent to the root bead on a\ntie-in weld usually cannot be visually determined as set forth in\nSection 195.228(b)(1) because there is not (sic) way to enter the\npipe, the tie-in weld being the final weld in a section.\nTherefore, only the length requirement of Subsection 6.9 of the\n1973 edition of API Standard 1104 applies.\nI hope this answers your questions. Please contact me if I can\nbe of any further assistance.\nSincerely,\n\\signed\\\nCesar DeLeon\nAssociate Director for\nPipeline Safety Regulation\nMaterials Transportation Bureau\ndal\\195\\228\\79-03-16\n1","truncated":false,"body_characters":1710}