{"operation":"document","citation":"PI-77-0103","title":"Pipeline Safety Interpretation PI-77-0103","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1977-02-23","effective_on":null,"summary":"PI-77-0103 concerning 195.106.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-77-0103.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-77-0103.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-pi-77-0103","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/Pipeline/1977/g77-02-023_Gaines_195.106-DBx.pdf","body":"<<<PAGE 1>>>\n\nPI-77-0103\nFebruary 23, 1977\nMr. Alex W. Gaines\nBrown & Root, Inc.\nP.O. Box Three\nHouston, Texas 77001\nDear Mr. Gaines:\nThis responds to your letter dated October 5, 1976, in which you ask for an interpretation of 49 CFR 195.106\nand 195.110.\nQuestion 1: What Design Factor F is presently required in Paragraph 195.106?\nAnswer: At present, Section 195.106 requires a design factor F of 0.72 to be used in the design formula\nfor determining the internal pressure of any new, replaced, or relocated pipeline with one exception. The\nexception is that a design factor F of 0.54 must be used for pipe that has been cold worked to meet specified\nminimum yield strength and is subsequently heated other than by welding to a temperature of 600 degrees\nFarenheit or more.\nQuestion 2: What Design Factor F will be required August 1, 1977?\nAnswer: Beginning August 1, 1977, there are three applicable design factors under Section 195.106. In\naddition to the design factors of 0.54 and 0.72 mentioned in response to Question 1, a new design factor F of\n0.60 must be used for pipe, including risers, on a platform located offshore or in inland navigable waterways.\nQuestion 3: Do the above Design Factor F revisions affect the Paragraph 195.110, which refers to Paragraph\n419 of ANSI B31.4?\nAnswer: No. The requirements of Paragraph 419 apply notwithstanding the amendment to Section\n195.106.\nSincerely,\nSIGNED\nCesar DeLeon\nActing Director\nOffice of Pipeline\nSafety Operations\n\n<<<PAGE 2>>>\n\nBrown & Root, Inc.\nP.O. Box Three\nHouston, Texas 77001\nOctober 5, 1976\nMr. Joseph C. Caldwell, Director\nOffice of Pipeline Safety\nDepartment of Transportation\nWashington, D. C. 20590\nDear Mr. Caldwell:\nYour interpretation of Title 49, Paragraph 195.106 and Paragraph 195.110 is respectfully requested concerning\nthe following questions:\n1. What Design Factor F is presently required in Paragraph 195.106?\n2. What Design Factor F will be required August 1, 1977? Reference Federal Register 41, No. 157 -\nThursday, August 12, 1976.\n3. Do the above Design Factor F revisions affect the Paragraph 195.110, which refers to Paragraph 419\nof ANSI B31.4?\nSpecifically,\na. Is the allowable stress range - SA = .72 specified minimum yield?\nb. Are the sustained external loadings not to exceed .75 SA?\nc. Are occasional loads not to exceed 80 percent of specified minimum yield strength?\nYour comments on the above will be gratefully appreciated.\nSincerely,\nBrown & Root, Inc.\nAlex W. Gaines","truncated":false,"body_characters":2472}