Questions and answers on Boilers

What is the design criteria for column? Axial compressive load.

What is the design criteria for beam? Beams are designed to withstand bending.

What is the design criteria for bracing? Axial tension or axial compression.

What is the function of base plate? Base plate distributes forces from the columns and bracings to the foundation.

What are the types structural steel connections? Bolted or welded or riveted or bonded connections.

What is the minimum thickness of structures to be used? Six millimeter.

Where hand hole plates are used? Hand hole plates are used in the boiler pressure parts to view and clean the inside surfaces.

Where man-hole ways are used? Man-hole ways are used to access the boiler inner parts.

What is the function of boiler drum level gages? Level gages are used for finding the water level inside the boiler drums.

What are thermo-couples? Thermo-couples are used to measure the temperature of components.

What is flow nozzle? Flow nozzle is used to find-out the quantity of flow measurement.

What is an orifice? Orifice is a sharp opening in a plate to facilitate flow measurement.

What is a venture? Venturi is used measure the flow in a pipe.

What is a valve? Valves are used control flow in pipes. What is aviation light? Aviation lights are used in tall buildings to warn aero-planes against Collision and accident. What is lightning arrestor? Lightning arrestors receive the electrical current during lightning and Save the structure. What is wind load? Movement of air is wind. The wind load for India is given in IS875 part 3. What is seismic load? Seismic load, also known as earth-quake load, is due to movement of Earth. (see IS1893). What is the allowable deflection? The allowable deflection was set as one inch per ten yards. As per IS800 - 1984,  D = span / 325.