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Corrosion in Flexible Burner Hoses

By Hyunjin Yoon, SK Innovation |

Piping leakage due to corrosion has the potential to cause catastrophic fires and damage to process equipment in petroleum refining and other chemical process industries (CPI) facilities. When such incidents occur, a large amount of damage and a long downtime results. Despite the risks, mistakes are often repeated in the way burner piping is designed and used. Using the failure-analysis investigation of a specific refinery fire to illustrate, this article describes the problem of corrosion-related leakage in flexible burner hoses, and provides recommendations on burner-piping design criteria. It also discusses remedial measures, as learned from the investigation, that can be taken to help avoid future accidents. Flexible hoses in burner systems Flexible hoses have several specific advantages when used in the design of pipe work. Among the advantages are the hoses’ ability to absorb vibration and operate effectively under high pressure. However, the most important advantage to the present discussion is the ability of flexible hoses to be adjusted easily. When employed in burner piping for fuel oil, atomizing steam or fuel gas, flexible hoses are generally used for the purpose of burner-gun positional adjustment. Flexible hoses…
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