Steam Boilers, Engines, Nozzles and Turbines
Boiler stays are used to

Provide support for boiler
Prevent flat surfaces under pressure from tearing apart
Take care of failure in compression
Take care of failure in shear

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Steam Boilers, Engines, Nozzles and Turbines
In water tube boilers

None of these
Forced circulation takes place
Water passes through the tubes which are surrounded by flames and hot gases
The flames and hot gases pass through the tubes which are surrounded by water

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