Manual for investigation and correction of boiler tube failures. Final report
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The manual is for use by electric utility power plant personnel during the investigation into the cause of a boiler tube failure and during the evaluation of corrective actions to prevent future boiler tube failures. It is intended to aid plant personnel in their understanding of the basic failure mechanisms that can produce a boiler tube failure. Information is provided on ways to identify the specific failure mechanisms, to determine the root cause of the failure, and to evaluate the corrective action that can be taken. The Manual contains information on the current methods to control the root causes of tube failures with the understanding that current and future research is necessary on many of these mechanisms to fully understand the factors which can prevent their recurrence. The Manual does not eliminate the need for a thorough metallurgical analysis during the failure investigation but is intended to enhance the investigative process by providing descriptive information for use during communications with technical specialists. The Manual encourages the comprehensive acquisition of failure data and pertinent records to document the failure for immediate and future reference. 80 figs., 10 tabs.