BMW X3 Service & Repair Manual: Information on hazards

BMW X3 Service & Repair Manual / Body and Frame / Body repair instructions / Information on hazards

1. Aluminum

Hazards/effects Measures/regulations
Repair stage 1 and 2: No hazards/effects none
Repair stage 3: (Welding - only E52)
  • Explosion hazard due to high concentration of fine aluminum dust.

    Arising e.g. during straight-through grinding of coated components in the base material and large-surface grinding of bright-finish components.

  • Explosion hazard due to swirling up of fine aluminum dust in cavities.

    Created by the necessary, thorough cleaning of machining surfaces and tools before and after machining aluminum.
  • Avoid high concentration of fine aluminum dust by means of continuous extraction.
  • Use explosion-proof exhaust extraction unit
  • Do not use compressed air when cleaning the workbay.
  • Avoid swirling up dust when cleaning the workbay.
  • Spontaneous combustion of fine aluminum dust when ignition and fire sources are drawn in.

    E.g.: hot swarf, grinding sparks, cigarettes, etc.
  • Do not operate ignition and fire sources in the intake area of exhaust extraction unit.

2. Carbon

Hazards/effects Measures/regulations
Repair stage 1: No hazards/effects none
Repair stage 2 and 3:
  • Explosion hazard due to high concentration of carbon dust.

    Produced when grinding carbon.

  • Explosion hazard due to swirling up of carbon dust in cavities.

    Created by the necessary, thorough cleaning of machining surfaces and tools before and after machining carbon.
  • Avoid high concentration of carbon dust by drawing it off continuously.
  • Use explosion-proof exhaust extraction unit
  • Do not use compressed air when cleaning the workbay.
  • Avoid swirling up dust when cleaning the workbay.
  • Spontaneous combustion of carbon dust when ignition and fire sources are drawn in.

    E.g.: hot swarf, grinding sparks, cigarettes, etc.
  • Do not operate ignition and fire sources in the intake area of exhaust extraction unit.
    Handling electrical system and electronics
    1.0 Battery Explosion hazard in the vicinity of the battery during welding and grinding work. The battery must be REMOVED . 2.0 Control un ...

    Information on metal filler
    IMPORTANT: Note the following information before starting to apply metal filler! Country-specific safety and industrial safety regulatio ...

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