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Client #272

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Project Number 1

Summary:

Part of a joint venture between EPA, TURI and RI DEM to reduce the use of TCE in the Providence, RI area, five trials were conducted on this client’s buffing compounds. Two cleaning solutions, Polyspray Jet 790 XS and Detergent 8, were tested on supplied parts. Both had some success in cleaning the supplied parts. However, not all parts were completely cleaned. Parts have been sent back to the client for analysis.

Test Objective:

To identify alternatives to TCE for removing buffing compounds from brass and silver surfaces.
Trial Number Date Run Purpose Success Rating
0 10/16/2006 To evaluate selected products on first supplied buffing compound Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
1 10/16/2006 To reevaluate three products at higher temperatures. Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
2 10/17/2006 To evaluate selected cleaners at higher concentrations in an attempt to improve efficiency Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.
3 10/17/2006 To evaluate selected cleaners on second supplied buffing compound. Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
4 10/17/2006 To evaluate selected cleaners on supplied parts using immersion cleaning. Test incomplete or inconclusive.
5 10/31/2006 To evaluate selected cleaners using spray cleaning. Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.
6 11/07/2006 To evaluate selected cleaners on supplied parts using immersion cleaning followed by spray cleaning. Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.
7 11/20/2006 To evaluate selected cleaners on supplied parts using immersion cleaning followed by spray cleaning. Results suggest a scale-up feasible match for cleaning chemistry and equipment. Pilot plant study with actual parts recommended.