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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. [Wrong Answer] |
B. | for carbon steel and cast iron pressure parts is 1.5 mm (except for tubes) and for severe conditions it is 3 mm. [Wrong Answer] |
C. | for internal cover and tube sheet is provided on both the sides. [Wrong Answer] |
D. | all (a), (b) & (c). [Correct Answer] |