A chemical plant contains the following equipment:

(a) Two gas-fired heaters, each with a heat duty of \(20,000,000 \mathrm{Btu} / \mathrm{hr}\). The tubes are carbon steel and the heaters operate at 225 psia.

(b) Three distillation columns with 8 - \(\mathrm{ft}\) diameter, 25 sieve trays, and 2 -ft tray spacing constructed using solid 316 stainless steel and operating at 200 psia.

Evaluate the total bare-module cost for the equipment and for the entire plant. Assuming no allocated costs for utilities and related facilities, estimate the direct permanent investment, the total depreciable capital, and the total permanent investment for the process. Use a CE cost index of 600 .