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851 Silica Dust Safety in Construction
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Housekeeping

The employer should not allow dry sweeping or dry brushing when it could contribute to employee exposure to silica dust unless wet sweeping, HEPA-filtered vacuuming or other methods that minimize the likelihood of exposure are not feasible.

  • The employer should not allow compressed air to be used to clean clothing or surfaces where such activity could contribute to employee exposure to respirable crystalline silica unless:
    • the compressed air is used in conjunction with a ventilation system that effectively captures the dust cloud, or
    • no alternative method is feasible.
  • Exposed surfaces should be as free as practicable of silica- containing dust (bulk samples of the dust may need to be collected).
  • Wet sweeping should be used to clean areas if possible.
  • If vacuuming is used for cleaning, the exhaust air should be properly filtered to prevent the release of airborne silica back into the workroom.
  • There should be separate break areas for consuming food, beverages, etc. that are kept free of silica.

Knowledge Check Choose the best answer for the question.

6-3. Which of the following is a safe housekeeping work practice when exposure to silica is possible?