December 2005

Heat Transfer/Piping

Update design and maintenance methods for refractory systems

Better design methods and repair efforts reduce failure of these systems

Colwell, R., Bechtel Corp.

Refractory linings are extensively used in various refining piping or equipment applications to resist high temperatures and/or erosion. Due to the extreme service/ processing conditions, refractory linings can fail. There are maintenance methods and new design and strategies that extend the service life for refractory-lined transfer lines. Severe operating environment. Castable refractory-lined conduits for high-temperature services are commonly used within the petroleum and chemical industries. Castable refractory linings enable using less expensive alloys for pressure-retaining boundaries, since they operate at lower metal temperatures. Conversely, castable refractory linings require la

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