Record production units' inoperable periods to reflect actual operating hours on the Production Unit Downtime form. Shut down segments of process streams (production units) instead of shutting down an entire process stream when documenting a production unit's downtime. An example of downtime would be when lines are purged and no emissions are coming from the production unit. These inoperable periods are deducted from emission calculations. For instance, if a production unit's start date occurred after the reporting date range or its end date occurred before the reporting date range, then that production unit's emissions will not be included in the calculation.
When a production unit's inoperable start or end date falls within the reporting date range, then the FEMS emissions calculator must make sure that emissions are not calculated before its operable period or after its inoperable period. For example, if the start date was July1, 2004, emissions would only be totaled for the second half of the year, and the operating hours would be adjusted. Before the software totals emissions for a specified period, it subtracts the downtime from the total operating hours.
Note:
The operating hours/percentage-related fields on the Production Schedule form are not used
for FEMS emissions calculations.
To record production unit
downtime
Click Data
Entry > Production Schedules > Downtime in the Navigation Tree.
The Production Unit Downtime
list appears.
Locate the Production Unit and click the link to open the Production Unit Downtime form.
Expand the Down Time Information section (if necessary).
Click Add Down Time Information.
Enter the Start Date and End Date of your production unit's inoperable hours. Or, use the Calendar buttons to select the dates.
Describe the production
unit's downtime in the Description
field and click OK.
The entries are displayed as a line item in the Down
Time Information section. Change existing downtime information
using the buttons adjacent to the line item.
Repeat steps 4 through 6 to enter additional downtime information for the same production unit.
Click Save on the Production Unit Downtime form.
