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Source Reduction of Toxics. Cristy Williamson. May 10, 2007. Lockheed Martin Aeronautics Company. HQ – Fort Worth, TX. Marietta, GA. Air Force Plant 42. SITE 2 U-2 Upgrades/ PDM/ Flight Test. SITE 7. F-117 Upgrades/ PDM/Flight Test. SITE 8 Shipping/Receiving. LM Aero Plant 10. R&D

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Presentation Transcript
slide1

Source Reduction of Toxics

Cristy Williamson

May 10, 2007

Lockheed Martin Aeronautics Company

slide2

HQ – Fort Worth, TX

Marietta, GA

Air Force Plant 42

SITE 2U-2 Upgrades/

PDM/ Flight Test

SITE 7

F-117 Upgrades/ PDM/Flight Test

SITE 8Shipping/Receiving

LM Aero Plant 10

  • R&D
  • Prototyping
  • Classified
  • Composites
slide3

ESH MANAGEMENT SYSTEM

ACT

PLAN

CHECK

DO

slide5

RISKREDUCTION

  • P2 results in risk reduction through:
    • Incorporation into design
      • Design for Environment
    • Material Substitution
    • Recycling
    • Sharing Best Practices
    • Etc.
slide6

PERFORMANCE TRACK COMMITMENTS

REDUCE TOXIC CHEMICAL USAGE BY 10% PER YEAR

(chrome and selected solvents)

Baseline: 7,924.0 lbs.

Goal: 5,800.0 lbs.

1313.8

slide8

REDUCTION IN TARGETED PT CHEMICALS

  • Specialty Coating Reformulation:
    • Reduction in Methyl Ethyl Ketone (MEK).
      • Electrodag 501/502 are MEK-laden.
    • Alternative: Lower-VOC Water-Based Specialty Coating.
slide9

REDUCTION IN TARGETED PT CHEMICALS

  • Reduction in Class II ODCs.
    • Remove products containing HCFC-141b.
    • Focus: Mold-Release Agents
    • Old Miller-Stephenson Chemical Products:
      • MS-143DF bulk liquid
      • MS-122DF aerosol
      • MS-122N/CO2 aerosol
slide10

REDUCTION IN TARGETED PT CHEMICALS

  • New Miller-Stephenson Chemical Products:
    • MS-143XD bulk liquid
    • MS-122AD aerosol
  • Testing included:
      • Ease with which urethane part releases from tool/coupon
      • Appearance of urethane part
      • Hardness testing of cured urethanes
      • Crosscut tape adhesion testing on painted urethanes
      • Shop-employee feedback
slide11

NON-CHROMIUM COATING SYSTEMS

2000 Hour Neutral Salt Spray Corrosion Resistance

* Turco 4215-NCLT alkaline clean, DeOxit 22L deoxidizer.

** Surface prep by Scotch-Brite/Bon-Ami.

*** Turco 4215-NCLT alkaline clean, Metal Glo 6 deoxidizer.

slide12

NON-CHROMIUM COATING SYSTEMS

Comparison of Deft MIL-P-85582 and MIL-P-23377 Non-Chrome Primers

Deft 02GN084

Solvent-Borne

VOC = 337 g/L

Benzene,1-chloro-4 -trifluoro methyl: 16%

MnPK: 12%

MAK: 3%

Deft 44GN098

Water Reducible

VOC = 330 g/L

Sec-Butyl Alcohol: 12%

Nitroethane: 10%

Diethyl benzene: .01%

comparison of hentzen and deft mil p 23377 primers

NON-CHROMIUM COATING SYSTEMS

Comparison of Hentzen and Deft MIL-P-23377 Primers

Hentzen 16708

Solvent-Borne

VOC = 340 g/L

MAK: 25%

IPA: 5%

Benzyl alcohol: 5%

MIBK: 3%

MEK: 1%

slide14

NON-CHROMIUM CONVERSION COATING

  • Evaluation of non-chromated coatings has been on-going since the 1990s.
    • Primer successes on aircraft.
  • Commercial products are not quite there yet, but are getting very close.
  • Our testing is an effort to identify a a total non-chromated system (pretreatment and coatings).

Contact: John Beale, john.beale@lmco.com,

(661) 572-7920

slide15

LOW-VOC MOLD-RELEASE

  • Test & evaluation conducted in concurrence with low-VOC wipe-solvent research.
    • More specifics on following slides.
  • Effort is to identify replacement for:
    • Henkel Frekote 44-NC (746 g/L VOC)
    • Henkel Frekote 700-NC (754 g/L VOC)
  • Products Evaluated:
    • Henkel Frekote 900-WB / 901-WB (0 g/L VOC)
    • McGee Industries Inc. MAC-507 (0 g/L VOC)
    • Zyvax Inc. Water Works Departure (0 g/L VOC)
    • Henkel Frekote 710-LV (115 g/L)
slide16

LOW-VOC MOLD-RELEASE

  • Frekote 710-LV To-Do List:
    • Test & Evaluate
    • Conduct Shop Trials
    • Procure in Presaturated Wipers
    • Change Specifications
slide17

LOW-VOC WIPE SOLVENT

  • Previous Approach – Focus on toxics
  • Current Approach – Focus on quantity (usage)
    • Where can we get the biggest “bang for our buck”?
      • Answer: Isopropyl Alcohol (IPA)
slide18

LOW-VOC WIPE SOLVENT

2005 VOC EMISSIONS

Other VOC

IPA VOC

slide19

LOW-VOC WIPE SOLVENT

  • Test & Evaluation - Focus on tool-cleaning operations.
    • Steel
    • Aluminum
    • Composite
    • Foam
  • Approximately 30 cleaners/dilutions evaluated.
  • Test and Evaluation included:
    • Visual evaluation
    • Number of wipes/strokes required to remove contamination
    • Water-break evaluation
    • Corrosion testing
    • Fluid-soak testing
    • Lay-ups
      • Paint-adhesion testing
      • Lap-shear testing
slide21

LOW-VOC WIPE SOLVENT

  • Two products have passed final qualification requirements:
    • Acetone
      • Exempt from VOC-categorization in the local Antelope Valley Air Quality Management District.

2) Ecolink 1171

      • Solvent blend containing PCBTF, methyl acetate, and d-limonene.
slide22

LOW-VOC WIPE SOLVENT

  • Wipe-Solvent Replacement Challenges:
    • Institute Presaturated Wipers.
    • Change Specifications.
    • Meet Environmental and Health/Safety Requirements.
    • Change culture.
slide23

IMPLEMENTATION

Cristy gets shipped out, along with the last drums of IPA !!