Process Equipment and Plant Design
The design stress, which is more than the damaging stress, is the least unit stress that will render a member unfit for service before the end of its normal life. The design stress factor or factor of safety indicates the margin between design stress and the __________ stress.

Damaging
Allowable
None of these
Working

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Process Equipment and Plant Design
Pick out the wrong statement about routing of fluids in a shell and tube heat exchanger.

Higher pressure fluid stream should be routed through the shell side
The viscous fluid should be routed through the shell side
Lower flow rate fluid should be routed through the shell side
The corrosive and fouling fluid should be preferably routed through the tubes

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