_In the design of a shell and tube heat exchanger, the corrosion allow – McqOptions

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1.	_In the design of a shell and tube heat exchanger, the corrosion allowance$?
A.	Need not be provided for non-pressure parts like tie rods, spacers, baffles, supports etc
B.	For carbon steel and cast iron pressure parts is 1.5 mm (except for tubes) and for severe conditions it is 3 mm
C.	For internal cover and tube sheet is provided on both the sides
D.	All of the above
Answer» E.

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