Document Y9bvyKGzRpMr8VZjbw48ga76N

AR226-2205 i? R oger J Zipfel 11/01/2001 01:01 P M To: Robert F Pinchot/DEV/AE/DuPont@ DuPont co: Subject: Re: Operating information Q) Rob, I think the particle size in the P F A scrubber should be similar, a s the thermodynamics are similar. However, in F E P things are different. The pH in F E P is lower, so I think that som e of the losses maybe due to the acid form of the C-8. These losses could be a s small a s molecular size. N o measurements have ever been made. But in any case they will not be greater than the ones in fine powder. Roger. Robert F Pinchot 11/01/2001 07:19 A M Robert F Pinchot 11/01/2001 07:19 A M __ To: Debbie J Mulrooney/AE/DuPont@DuPont cc: Steven L G rise/AE/DuPont@ D uPont, R o g e r J Zipfe!/A/DuPont@ DuPont Subject: Re: Operating information Deb, Here is the particle size distribution for the fine powder source. It is lower than what we we were thinking. A n y differences in our thoughts concerning deposition. Now you can start the sensitivity analysis. Roger, D o you expect the particle size for the other sources to be similar to these num bers? Rob ---------------------------Forwarded by Robert F Pinchot/OEV/AE/DuPont on 11/01/2001 07:16 A M ---------------------------------- / / f Roger J Zipfel 10/31/2001 01:35 P M To: Robert F Pinchot/DEV/AE/DuPont@DuPont cc: Subject: Re: Operating information Cj Rob, attached spreadsheet give s data collected in 1996. I don't anything has changed since that time. The spreadsheet give s four sets of data, all saying approximately the sam e thing. It appears that the particle size is mostly around 0.3 microns not the number I quoted on the phone. Roger. FP O-R rv.r py nart ppyp Robert F Pinchot 10/31/2001 07:03 A M Robert F Pinchot 10/31/2001 07:03 A M To: Roger J Zipfel/AE/DuPont@DuPont EID 294469 ! cc: Steven L G rise/A E/D uP ont@ D uP ont, T a -W e i Fu/SE/D uPont@ DuPont, Bernard J R eil!y/ A E/ D u P on t@ D u Po n t Subject: Re: Operating information Q Roger, Th is should meet our needs for the time being. Thanks for getting back to m e on the particle size measurements. W e will need the detailed data that you said you had. P le ase forward. Thanks, Rob EID 294470