CLEANING OF OXYGEN SYSTEM COMPONENTS

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Author:
carLORENZ0
ID:
258006
Filename:
CLEANING OF OXYGEN SYSTEM COMPONENTS
Updated:
2014-01-23 04:49:17
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  1. - to ensure equipment is properly clean and remains clean until packaged, it is essential to maintain a controlled environment. 

    - this environment helps prevent recontamination during the cleaning, drying, assembly, testing & packaging process. 


    + Clean components in designated area - for oxygen use only

    + Ensure cleaning area has proper ventilation

    + Do not use compressed shop air for cleaning - air may contain hydrocarbons 

    + Never use petroleum-base or other flammable solvents to clean any surface.

    + Wear appropriate PPE for different levels of cleaning.
    Cleaning Oxygen Components
  2. - Field & Depot Levels.
    Cleaning Levels
  3. - cleaning procedures will be limited to the external cleaning of oxygen components.

    - incorporates the use of clean-lint-free cloth dampened in a cleaning solvent to wipe/clean the outside of components only. 

    - facilities do not require environment levels specified for depot shops.
    Field Level
  4. -  cleaning procedures involve major overhaul and internal cleaning of oxygen components. 

    - requires equipment, facilities and materials usually beyond capacities of most acft MTCE units.
    Depot Level
  5. - any compound or substance which promotes the removal of contaminates through mechanical or chemical action.

    - will not be flammable 
    - will not leave a residue
    -will not react chemically with the item being cleaned.
    - will not alter the physical dimensions or properties of the material being cleaned.
    - has a relatively low toxicity.
    Cleaning Agents
  6. - type of cleaning involves suspending component in a screen casket above boiling solvent and allowing the vapor form the solvent to condense in the component.
    Vapor Cleaning
  7. - process removes organic contaminates and particulate  matter.

    - use a commercial grade oxygen-sage solvent at ambient temps. to throughly wash surfaces requiring degreasing.
    Solvent Cleaning
  8. - process cleans surfaces w/ a water soluble cleaner & water solution.
    Detergent/Water Cleaning
  9. - process involves submerging a component in a tank filled with solvent & inducing high frequency energy waves into the fluid. 

    +producing a scrubbing action both inside & outside component
    Ultra Sonic Cleaning
  10. ***ALL CLEANING PROCESSES ARE COMPLETED W/ PURGING HOT, OIL-FREE AIR OR NITROGEN.***
    • Vapor
    • Ultra Sonic
    • Solvent 
    • Detergent
  11. - checks components for residual solvent or contamination by usig light w/ at least 100 candle lumens. 

    + common D-cell flashlight held no more than 18-inches form the component is an acceptable source of light. 

    - evidence of oil, grease, or fibers on the surface being inspected shall be cause or rejection.
    Bright White Light Inspection
  12. - Oil, grease & other contaminates tend to give off a fluorescent glow when exposed to ultraviolet light. 

    - this type of test is extremely reliable for ID’ing residual contaminates.
    Ultra-violet Light Inspection
  13. - type of inspection involves wiping the outside of the cleaned component with filter paper or a clean, lint-free swipe. 

    - swipe the surface in two different directions to ensure coverage & detection.
    - swipe should produce no solvent residual or contaminates.
    Swipe Inspection
  14. - after components have been cleaned, verified & meet the specific cleanliness criteria, the components will be packaged to prevent contamination during shipment or storage.
    Packaging

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