Case studies of corrosion under insulation (CUI), identifying the key contributory factors within each example and discussing the limitations of the first pass desktop approach. Experience has verified that intimate knowledge of the system in question can greatly increase the probability of success and reduce risks.
Remote monitoring reduces the cost of monitoring cathodic protection and improves the reliability of cathodic protection systems. Automated processes by the end user can populate data into existing databases customized for cathodic protection record-keeping, and can be integrated with other software.
Today, multi-purpose, built-for-purpose, all-in-one, pipeline integrity automation, wireless, data communication radios are available that monitor and report all cathodic protection rectifier operations, automate rectifier interruption, monitor rectifier operational status, monitor and report pipe-to-soil potential, pipeline pressure and pipeline pigging operations.
Field experience was studied to identify the best solutions to Localized corrosion of 316 stainless steel instrument and chemical injection tubing in marine environment. Laboratory tests and exposure in marine environment of samples have been used to evaluate possible alternative materials and protective chemicals.
Each element & molecule has its own typical natural oscillation. The aim is to influence the original oscillation of the element through in such a way that ultimately the physical properties of the element or of the molecule are modified in the water. The results are rust molecules disintegrate in an unstable form and are washed out.
Tube coils in a radiant section of an ethylene cracking furnace are subject to corrosion. Repair welding of these tube coils is difficult. A degraded tube section is replaced by welding in a virgin tube section. The current paper presents the test results of a weld joint between a service-exposed tube and virgin tube using automatic orbital and manual gas-tungsten-arc welding (GTAW) processes.