c. A plant modification has been proposed that will allow recovery of a byproduct. The modification consists of adding the following equipment: Estimate the capital cost required for the modification if the assessment is done in 2010 . - U-tube heat exchanger, area 60m2, shell and tube are to be constructed from carbon steel - Kettle reboiler, area 110m2; shell and tube are to be constructed from carbon steel - Horizontal pressure vessel with Monel clad, diameter 1m, vessel overall height 15m, operating pressure 10 bar; [10] d. Based on the source(s) of cost data in (c) above, what could be the accuracy level of the calculated capital cost? [2]