Process Equipment and Plant Design
An underdesigned steam trap will

Back up condensate and cause water hammer in steam line
Waste steam
None of these
Destroy itself of acceleration wear due to rapid recycling

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Process Equipment and Plant Design
In the design of a shell and tube heat exchanger, the corrosion allowance

For carbon steel and cast iron pressure parts is 1.5 mm (except for tubes) and for severe conditions it is 3 mm
All of these
Need not be provided for non-pressure parts like tie rods, spacers, baffles, supports etc
For internal cover and tube sheet is provided on both the sides

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