Document ID: EPA-HQ-OAR-2006-0790-2529
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2015-01-21T05:00Z

From: Forte, Reynaldo 
Sent: Wednesday, May 07, 2014 2:45 PM
To: Eddinger, Jim
Cc: Kokopeli, Peter; Schreifels, Jeremy
Subject: FW: starts for industrial units

Jim  -  Peter Kokopeli was able to do a brief analysis of the time it takes some industrial boilers to have their controls reducing emissions. Don't know how helpful this will be to you since the number of units is limited. Let me know if you'd like any follow up.

Rey

From: Kokopeli, Peter 
Sent: Wednesday, May 07, 2014 12:58 PM
To: Forte, Reynaldo
Cc: Schreifels, Jeremy
Subject: FW: starts for industrial units

Rey:
The graphic below summarizes starts at 156 industrial CAMD units between 2003 and 2012. The chart shows the average NOx or SO2 rate in the hour after the start of generation. The results are generally consistent with the SSM TSD including Wet Lime (FGD) which we believe runs from start of generation. 

This analysis only includes the starts for units reporting load in MWH (as opposed to steam) and that have the controls indicated. Only starts that occurred after the control install date are included (with the exception of SNCR). The 10-year time span is needed because industrial have far fewer starts per year than EGUs. 

Note that the unit counts are quite low. We could expand this analysis to include the majority of industrial units reporting steam load but would not be able to complete it before June at the earliest due to competing priorities.

   oo peter

 Peter