Raytheon Systems Company Lowering VOCs in the Application of Weapons Systems Coatings Kelly Eddings May 26, 1999
Goal • Reduce Volatile Organic Compounds(VOCs), and Hazardous Air Pollutants (HAPs) in Painting and Coating Materials • RSC-wide Application (“Design Anywhere, Build Anywhere”)
Steps to Achieve Goal • Step I • JG-PP Effort which accomplished two (2) SPIs for the Use of Alternative Materials for High VOC coatings. • Qualification of Powder Coating which passes CARC testing. • Consolidated Previously Submitted or Approved Legacy SPIs • Standardized Test Protocol to Validate Alternative Primers and Topcoats
Steps to Achieve Goal • Step II • No paint, Primer Only, Decals and Appliques (This effort being lead by Raytheon Missile Systems in Tucson).
Steps to Achieve Goal • Intermediate Step Implementing CO2 Technology
Why CO2 Technology as an Intermediate Step? • Our VOC emissions must be lowered prior to Phase II completion (12/2001). • CO2 Technology can be implemented within a reasonable time span. • Ability to apply a broad spectrum of coating types.
Benefits • Compliance with State Air Emissions/Restrictions (TX) • Decrease coating application time • Less Material Needed for Coating Process • Reduction of Potential Employee Exposure • Reduction of Chromium Releases • Reduction of VOC emissions • Reduction in Health/Safety Compliance Costs • Increased Operating Flexibility
Targeted Materials for Identification of Alternate CO2 Compatible Material/Process MIL-P-23377 MIL-PRF-85582 MIL-C-22750 MIL-C-46168 MIL-PRF-85285
Actions • Identify Availability of Alternatives • Interest of other Defense Contractors • Funding Source? • Coating/Paint Suppliers • Involvement of Union Carbide and CTC • Testing of Material • Qualification/Acceptance Criteria
Activity Status: Initial study conducted at the Union Carbide Research Technology Center in Charleston, West Virginia. Results Ability to achieve coating build-up/thickness in approximately 1/3 of the time. Decreased the VOC content of the coating from 3.35 lb/gal to 1.36 lb/gal.
Activity Status Continued: Conducted Transfer Efficiency Study at CTC on May 25, 1999. Comparison of CO2, HVLP, and Airless Application Methods. Results All results have not been calculated at this time. Confirmed Results Decrease in time to achieve film thickness Decrease in VOCs Improved Distribution of Droplet Size