Source Reduction of Toxics
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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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Source Reduction of Toxics

Cristy Williamson

May 10, 2007

Lockheed Martin Aeronautics Company


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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


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ESH MANAGEMENT SYSTEM

ACT

PLAN

CHECK

DO



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RISKREDUCTION

  • P2 results in risk reduction through:

    • Incorporation into design

      • Design for Environment

    • Material Substitution

    • Recycling

    • Sharing Best Practices

    • Etc.


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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



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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.


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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


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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


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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.


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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%


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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%


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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, [email protected],

(661) 572-7920


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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)


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LOW-VOC MOLD-RELEASE

  • Frekote 710-LV To-Do List:

    • Test & Evaluate

    • Conduct Shop Trials

    • Procure in Presaturated Wipers

    • Change Specifications


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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)


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LOW-VOC WIPE SOLVENT

2005 VOC EMISSIONS

Other VOC

IPA VOC


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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



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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.


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LOW-VOC WIPE SOLVENT

  • Wipe-Solvent Replacement Challenges:

    • Institute Presaturated Wipers.

    • Change Specifications.

    • Meet Environmental and Health/Safety Requirements.

    • Change culture.


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IMPLEMENTATION

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


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