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Overview of Small Bore Piping (SBP)
In the refining and chemical processing industries, Small Bore Piping (SBP) is generally process piping that is two inches or less in diameter. Small bore piping typically branches off of the main process piping and is often used as relief lines and drain piping.
The refining industry has had a history of failures occurring in small bore threaded pipe connections. These connections are subject to several different types of damage, including but not limited to: fatigue cracking, stress corrosion cracking (SCC), corrosion under insulation (CUI), and accelerated erosion/corrosion of the pipe wall. This is due to a combination of internal and external corrosion forces acting on small diameter, thin walled pipe connections, as well as fluid turbulence and crevice corrosion acting on threaded connections.
Although SBP failures are not as likely to lead to major process safety incidents as the failure of larger primary piping, numerous instances have been reported where the failure of SBP led to reliability impacts (process unit shutdown) or large fires, when secondary effects of the ensuing fire caused the failure of other larger pipe and vessels.
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Articles about Small Bore Piping (SBP)
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Online Article
Updated editions of both API 570 and API RP 580 were recently released by the American Petroleum Institute.
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Small Bore Piping Inspection Programs: How a serious incident and investigation led to a best practiceNovember/December 2013 Inspectioneering JournalBy Anthony J. Rutkowski at A.J. Rutkowski, LLC, and Anthony M. Damron at The Equity Engineering Group, Inc.
Small bore piping is present in many variations throughout numerous industries. This article will address an incident involving a small bore piping failure that occurred on a 140,000 BPD crude distillation unit in the refining industry.
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September/October 2000 Inspectioneering JournalBy John Reynolds at Intertek
This article continues to outline the 101 essential elements that need to be in place, and functioning well, to effectively and efficiently, preserve and protect the reliability and integrity of pressure equipment (vessels, exchangers, furnaces, boilers, piping, tanks, relief systems) in the refining and petrochemical industry.
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May 6 - 9 2019Location: San Antonio, Texas, United States
Hosted By: American Petroleum Institute
Dates: May 6, 2019 - May 9, 2019
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Apr 29 - May 3 2019Location: Galveston, Texas, United States
Hosted By: Refining Community
Dates: April 29, 2019 - May 3, 2019
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April 10 - 11 2019Location: Phoenix, Arizona, United States
Hosted By: American Petroleum Institute
Dates: April 10, 2019 - April 11, 2019
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May 21 - 24 2019Location: Grapevine, Texas, United States
Hosted By: American Fuel & Petrochemical Manufacturers (AFPM)
Dates: May 21, 2019 - May 24, 2019
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June 11 - 12 2019Location: Houston, Texas, United States
Hosted By: Petrochemical Update
Dates: June 11, 2019 - June 12, 2019
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