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Description:
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This photo shows an employee dry-cutting masonry block with a saw. The saw operator was exposed to respirable dust containing 16% quartz (but not overexposed). This saw operator and the one shown in the remaining two photos were required by their employer to wear a respirator, but they had not been fit tested, and no medical evaluation had been done to determine their suitability to wear a respirator.
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Description:
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DSC0002.jpg and DSC00003.jpg
These two photos also show an employee dry-cutting masonry blocks with a saw. The saw operator was overexposed to respirable dust at a TWA of 1.4 mg/m3, containing 22% quartz. The PEL was 0.42 mg/m3. In the 00003 photo, there are also some protruding reinforcing steel bars (rebars) that were stored in the vicinity of the employee exposing him to possible impalement or cuts.
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Description:
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DSC0002.jpg and DSC00003.jpg
These two photos also show an employee dry-cutting masonry blocks with a saw. The saw operator was overexposed to respirable dust at a TWA of 1.4 mg/m3, containing 22% quartz. The PEL was 0.42 mg/m3. In the 00003 photo, there are also some protruding reinforcing steel bars (rebars) that were stored in the vicinity of the employee exposing him to possible impalement or cuts.
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Standard:
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1910.134(f)
1910.134(e)
1926.55(a)
1926.55(b)
1926.701(b)
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Standard:
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1910.134(f)
1910.134(e)
1926.55(a)
1926.55(b)
1926.701(b)
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Standard:
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1910.134(f)
1910.134(e)
1926.55(a)
1926.55(b)
1926.701(b)
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Abatement:
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Abatement was obtained through the use of a wet cutting process which reduced the amount of respirable silica dust that was generated from cutting the masonry blocks. The protruding rebar needed to be rotated so that the protruding ends were in the ground, rather than protruding skyward.
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Abatement:
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Abatement was obtained through the use of a wet cutting process which reduced the amount of respirable silica dust that was generated from cutting the masonry blocks. The protruding rebar needed to be rotated so that the protruding ends were in the ground, rather than protruding skyward.
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Abatement:
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Abatement was obtained through the use of a wet cutting process which reduced the amount of respirable silica dust that was generated from cutting the masonry blocks. The protruding rebar needed to be rotated so that the protruding ends were in the ground, rather than protruding skyward.
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Description:
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Hazard:
Overexposure to silica during cleanout of batch mixer. Also confined space violations; no positive lockout of mixer.
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Description:
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Hazard:
Overexposure to silica during cleanout of batch mixer. Also confined space violations; no positive lockout of mixer.
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Description:
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Hazard:
Employee overexposed to silica during foundry work.
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Standard:
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1910.1000 and 1910.146
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Standard:
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1910.1000 and 1910.146
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Standard:
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1910.1000 and 1910.134
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Abatement:
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Employer established a respirator program initially, then installed automatic power washers for each mixer. Employer also developed a PRCS program and rewired the mixers for LO/TO.
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Abatement:
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Employer established a respirator program initially, then installed automatic power washers for each mixer. Employer also developed a PRCS program and rewired the mixers for LO/TO.
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Abatement:
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Employer established a respirator program and trained employees on silica.
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