Mulitcomponent lining

A refractory system consisting of two or more layers of different refractory types; for example, castable and ceramic fiber.

Pigtail

Small diameter piping that connects steam/methane reformer tubes to the inlet and outlet headers.

Tubercles

Localized corrosion product appearing in the form of knob-like mounds covering pits often associated with oxygen corrosion in boiler systems.

Tube Support

Any device used to support tubes such as hangers or tubesheets.

Repair

Work necessary to restore equipment to a condition of safe operation at the design conditions.

Mortar

A refractory material preparation used for laying and bonding refractory bricks.