# PURPOSE AND GO ALS OF

DISCUSSION SESSIONS

# GO ALS

Identify and understand the criteria that alter natives (c hemical and/or no c hemical) will need to satisfy to be an effective replacement. Understand lessons lear ned from previous wo rkthat can be used to inf or m future substitutions . Identify a list of measures, fo r e xample, f or w or ke r protection, other than c hemical substitution, that could be used to reduce e xposure to T CE in the given applications .

# GO ALS

Pr ovide a summary of the conclusions reac hed during eac h of the tw o discussion sessions that will identify:

 Key common elements that can help to transition to safer alter nativ es or implement e xposure reduction measures
 Specific c hemicals or f or mu lations that hav e been sho wn to be effectiv e replacements fo r T CE in some applications .  Specific applications fo r whic h there are no kno wn, viable alter nativ es to T CE as w ell as identify other methods to reduce risks in these applications. M ak e the kno wledg e and e xperience that will be shared toda y and tomorrow av ailable to others using T CE who are looking f or risk reduction oppor tunities .

# DEVEL OPING CRITERIA

Systems Approac h

 Identify the industrial pr ocess
 Pe rf or mance
 Chemistry

 Pr oductivity

, throughput
 Health and Envir onmental
 Cost

 Wh y the c hemical

 Wh y not the c hemical
 User

# QU ESTIONS T O CONSIDER IN THE CASE STUDIES

Where w as T CE used and wh y? What w as the impetus f or seeking an alter native f or T CE? What consider ations we re tak en into account to identify potential alter natives? Ho w w as the list of potential alter natives narrowe d do wn? Ho w w ere alter natives ev aluated f or efficacy? Ho w w ere envir onmental/health considerations tak en into account in identifying alter natives? Ho w w as a final alter native selected f or use? What lessons w ere lear ned in reducing ex posure to T CE that could help inf or m future decision making?

# PO TENTIAL OUT COMES: AER OSOLS AND COLD CLEANING List of criteria that potential alter natives will need to satisfy if t he y are to be used as replacements fo r T CE. What k ey lessons we re lear ned in tr ansitioning fr om T CE to an alter native that could help inf or m future substitutions? Are there g ener alizations that can be made so that future substitutions are easier to conduct? Are there an y c haracteristics, or combinations of c haracteristics that resulted in no viable alter natives to T CE? List of measures other than c hemical substitution that can be used to reduce e xposure to T CE.

# PO TENTIAL OUT COMES: VAPOR DEGREASING

List of criteria that potential alter natives will need to satisfy if t he y are to be used as replacements fo r T CE. What k ey lessons we re lear ned in tr ansitioning fr om T CE to an alter native that could help inf or m future substitutions? Are there g ener alizations that can be made so that future substitutions are easier to conduct? Are there an y c haracteristics, or combinations of c haracteristics that resulted in no viable alter natives to T CE? List measures other than c hemical substitution that can be used to reduce e xposure to TC E as a v apor degreaser .