IECM 12.0 beta User Manual > Modules Included with the IECM > Common Input and Result Screens > Costs >

O&M Cost Inputs

Inputs for O&M costs are entered on an O&M Cost parameter screen.

The EPRI TAG method of categorization has been used for operating and maintenance costs screens. It provides a consistent basis of reporting for a wider audience of users.

O&M costs are typically expressed on an average annual basis and are provided in either constant or current dollars for a specified year, as shown in the Status Bar . O&M cost input screens contain the following inputs:

•Variable O&M Costs:

•Electricity Price (Internal): This is the price of electricity as specified on the Overall Plant Fuel, Power & Land Cost input screen. Other screens typically display this value for reference only.

•Fixed O&M Costs:

•Number of Operating Jobs: This is the total number of operating jobs that are required to operate the plant per eight-hour shift.

•Number of Operating Shifts: This is the total number of equivalent operating shifts in the plant per day. The number takes into consideration paid time off and weekend work (3 shifts/day * 7 days/5-day week * 52 weeks/(52 weeks - 6 weeks PTO) = 4.75 equiv. Shifts/day)

•Operating Labor Rate: The hourly cost of labor is specified in the base plant O&M cost screen. The same value is used throughout the other technologies.

•Total Maintenance Cost: This is the annual maintenance cost as a percentage of the total plant cost. Maintenance cost estimates can be developed separately for each process area.

•Maintenance Cost Allocated to Labor: Maintenance cost allocated to labor as a percentage of the total maintenance cost.

•Administrative & Support Cost: This is the percentage of the total operating and maintenance labor associated with administrative and support labor.

•Taxes & Insurance: This is the cost of taxes and insurance as a percentage of the total plant cost. This value is specified on the Overall Plant O&M Cost input screen .

Some O&M cost screens contain additional inputs; these generally appear at the top of the screen.