OSHA Table 1 List of Silica Exposure Control Methods

Table 1 - Specified Exposure Control Methods for Crystalline Silica

The information on this page is taken from OSHA's Respirable Crystalline Silica regulations 19126.1153. We have added some free videos and helpful references. Please contact us if you have any questions.

Stationary Masonry Saws

Engineering & Work Practice Controls Methods

Use saw equipped with integrated water delivery system that continuously feeds water to the blade.
Operate and maintain tool in accordance with manufacturer's instructions to minimize dust emissions.

Respiratory Protection

≤ 4 hours / shift

None

≤ 4 hours / shift

None

References

Controlling Silica Dust -Stationary Masonry Saw Fact Sheet

Handheld Power Saws (Any Blade Diameter)

Engineering & Work Practice Controls Methods

Use saw equipped with integrated water delivery system that continuously feeds water to the blade.
Operate and maintain tool in accordance with manufacturer's instructions to minimize dust emissions.

Respiratory Protection

≤ 4 hours / shift Outdoors

None

> 4 hours / shift Outdoors

APF 10

≤ 4 hours / shift Indoors or enclosed space

APF 10

> 4 hours / shift Indoors or enclosed space

APF 10

References

Controlling Silica Dust - Handheld Power Saw Fact Sheet

Handheld Power Saws for Cutting Fiber-Cement Board (With Blade Diameter of 8 Inches or Less)

Engineering & Work Practice Controls Methods

For Tasks Performed Outdoors Only:

Use saw equipped with commercially available dust collection system
Operate and maintain tool in accordance with manufacturer's instructions to minimize dust emissions
Dust collector must provide the air flow recommended by the tool manufacturer, or greater, and have a filter with 99% or greater efficiency

Respiratory Protection

≤ 4 hours / shift

None

≤ 4 hours / shift

None

References

Controlling Silica Dust - Handheld Power Saws Used to Cut Fiber-Cement Board

Walk-Behind Saws

Engineering & Work Practice Controls Methods

Use saw equipped with integrated water delivery system that continuously feeds water to the blade
Operate and maintain tool in accordance with manufacturer's instructions to minimize dust emissions:

Respiratory Protection

≤ 4 hours / shift Outdoors

None

> 4 hours / shift Outdoors

None

≤ 4 hours / shift Indoors or enclosed space

APF 10

> 4 hours / shift Indoors or enclosed space

APF 10

References

Controlling Silica Dust - Walk-Behind Saws

Silica Safety Training DVD Compliance Kit

The Silica for Construction DVD Compliance Kit contains everything you need to create a silica exposure control plan and train employees. It includes:

  • Silica Safety Training Video
  • Silica Company Safety Program
  • Silica E-Learning
  • Silica PowerPoint
  • Silica Forms
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Drivable Saws

Engineering & Work Practice Controls Methods

For tasks performed outdoors only:

Use saw equipped with integrated water delivery system that continuously feeds water to the blade
Operate and maintain tool in accordance with manufacturer's instructions to minimize dust emissions

Respiratory Protection

≤ 4 hours / shift

None

≤ 4 hours / shift

None

References

Controlling Silica Dust - Drivable Saws

Rig-Mounted Core Saws or Drills

Engineering & Work Practice Controls Methods

Use tool equipped with integrated water delivery system that supplies water to cutting surface
Operate and maintain tool in accordance with manufacturer's instructions to minimize dust emissions

Respiratory Protection

≤ 4 hours / shift

None

> 4 hours / shift

None

References

Controlling Silica Dust - Rig-Mounted Core Saws or Drills

Handheld and Stand-Mounted Drills (Including Impact and Rotary Hammer Drills)

Engineering & Work Practice Controls Methods

Use drill equipped with commercially available shroud or cowling with dust collection system
Operate and maintain tool in accordance with manufacturer's instructions to minimize dust emissions
Dust collector must provide the air flow recommended by the tool manufacturer, or greater, and have a filter with 99% or greater efficiency and a filter-cleaning mechanism
Use a HEPA-filtered vacuum when cleaning holes

Respiratory Protection

≤ 4 hours / shift

None

≤ 4 hours / shift

None

References

Controlling Silica Dust - Handheld and Stand-Mounted Drills

Dowel Drilling Rigs for Concrete

Engineering & Work Practice Controls Methods

For tasks performed outside only:

Use shroud around drill bit with a dust collection system. Dust collector must have a filter with 99% or greater efficiency and a filter-cleaning mechanism

Respiratory Protection

≤ 4 hours / shift

APF 10

> 4 hours / shift

APF 10

References

Controlling Silica Dust - Dowel Drilling Rigs for Concrete

Vehicle-Mounted Drilling Rigs for Rock and Concrete

Engineering & Work Practice Controls Methods

Use dust collection system with close capture hood or shroud around drill bit with a low-flow water spray to wet the dust at the discharge point from the dust collector

OR

Operate from within an enclosed cab and use water for dust suppression on drill bit

Respiratory Protection

≤ 4 hours / shift

None

≤ 4 hours / shift

None

References

Controlling Silica Dust - Vehicle-Mounted Drilling Rigs for Rock and Concrete

Jackhammers and Handheld Powered Chipping Tools

Engineering & Work Practice Controls Methods

Use tool with water delivery system that supplies a continuous stream or spray of water at the point of impact

OR

Use tool equipped with commercially available shroud and dust collection system

Operate and maintain tool in accordance with manufacturer's instructions to minimize dust emissions

Dust collector must provide the air flow recommended by the tool manufacturer, or greater, and have a filter with 99% or greater efficiency and a filter-cleaning mechanism:

Respiratory Protection

≤ 4 hours / shift Outdoors

None

> 4 hours / shift Outdoors

APF 10

≤ 4 hours / shift Indoors or enclosed space

APF 10

> 4 hours / shift Indoors or enclosed space

APF 10

References

Controlling Silica Dust - Jackhammers or Handheld Power Chipping Tools

Handheld Grinders for Mortar Removal (i.e. tuckpointing)

Engineering & Work Practice Controls Methods

Use grinder equipped with commercially available shroud and dust collection system

Operate and maintain tool in accordance with manufacturer's instructions to minimize dust emissions

Dust collector must provide 25 cubic feet per minute (cfm) or greater of airflow per inch of wheel diameter and have a filter with 99% or greater efficiency and a cyclonic pre-separator or filter-cleaning mechanism

Respiratory Protection

≤ 4 hours / shift

APF 10

> 4 hours / shift

APF 25

References

Controlling Silica Dust - Handeld Grinders for Mortar Removal

Handheld Grinders for Uses Other Than Motar Removal

Engineering & Work Practice Controls Methods

For tasks performed outdoors only:
Use grinder equipped with integrated water delivery system that continuously feeds water to the grinding surface

Operate and maintain tool in accordance with manufacturer's instructions to minimize dust emissions

OR

Use grinder equipped with commercially available shroud and dust collection system

Operate and maintain tool in accordance with manufacturer's instructions to minimize dust emissions

Dust collector must provide 25 cubic feet per minute (cfm) or greater of airflow per inch of wheel diameter and have a filter with 99% or greater efficiency and a cyclonic pre-separator or filter-cleaning mechanism:

Respiratory Protection

≤ 4 hours / shift Outdoors

None

> 4 hours / shift Outdoors

None

≤ 4 hours / shift Indoors or enclosed space

None

> 4 hours / shift Indoors or enclosed space

APF 10

References

Controlling Silica Dust - Handheld Grinders for Tasks Other Than Mortar Removal

Walk-Behind Milling Machines and Floor Grinders

Engineering & Work Practice Controls Methods

Use machine equipped with integrated water delivery system that continuously feeds water to the cutting surface

Operate and maintain tool in accordance with manufacturer's instructions to minimize dust emissions

OR

Use machine equipped with dust collection system recommended by the manufacturer

Operate and maintain tool in accordance with manufacturer's instructions to minimize dust emissions

Dust collector must provide the air flow recommended by the manufacturer, or greater, and have a filter with 99% or greater efficiency and a filter-cleaning mechanism

When used indoors or in an enclosed area, use a HEPA-filtered vacuum to remove loose dust in between passes

Respiratory Protection

≤ 4 hours / shift

None

≤ 4 hours / shift

None

References

Controlling Silica Dust - Walk-Behind Milling Machines and Floor Grinders

Small Drivable Milling Machines (Less Than Half-Lane)

Engineering & Work Practice Controls Methods

Use a machine equipped with supplemental water sprays designed to suppress dust. Water must be combined with a surfactant

Operate and maintain machine to minimize dust emissions

Respiratory Protection

≤ 4 hours / shift

None

> 4 hours / shift

None

References

Controlling Silica Dust - Small Drivable Milling Machines

Large Drivable Milling Machines (Half-Lane and Larger)

Engineering & Work Practice Controls Methods

For cuts of any depth on asphalt only:
Use machine equipped with exhaust ventilation on drum enclosure and supplemental water sprays designed to suppress dust

Operate and maintain machine to minimize dust emissions

For cuts of four inches in depth or less on any substrate:

Use machine equipped with exhaust ventilation on drum enclosure and supplemental water sprays designed to suppress dust

Operate and maintain machine to minimize dust emissions

OR

Use a machine equipped with supplemental water spray designed to suppress dust. Water must be combined with a surfactant

Operate and maintain machine to minimize dust emissions

Respiratory Protection

≤ 4 hours / shift

None

≤ 4 hours / shift

None

References

Controllling Silica Dust - Large Drivable Milling Machines

Crushing Machines

Engineering & Work Practice Controls Methods

Use equipment designed to deliver water spray or mist for dust suppression at crusher and other points where dust is generated (e.g., hoppers, conveyers, sieves/sizing or vibrating components, and discharge points)

Operate and maintain machine in accordance with manufacturer's instructions to minimize dust emissions

Use a ventilated booth that provides fresh, climate-controlled air to the operator, or a remote control station

Respiratory Protection

≤ 4 hours / shift

None

> 4 hours / shift

None

References

Controlling Silica Dust - Crushing Machines

Heavy equipment and utility vehicles used to abrade or fracture silica-containing materials (e.g., hoe-ramming, rock ripping) or used during demolition activities involving silica-containing materials

Engineering & Work Practice Controls Methods

Operate equipment from within an enclosed cab

When employees outside of the cab are engaged in the task, apply water and/or dust suppressants as necessary to minimize dust emissions

Respiratory Protection

≤ 4 hours / shift

None

≤ 4 hours / shift

None

References

Controlling Silica Dust - Heavy Equipment and Utiliy Vehicles Used During Demolition

Heavy equipment and utility vehicles for tasks such as grading and excavating but not including: Demolishing, abrading, or fracturing silica-containing materials

Engineering & Work Practice Controls Methods

Apply water and/or dust suppressants as necessary to minimize dust emissions

OR

When the equipment operator is the only employee engaged in the task, operate equipment from within an enclosed cab

Respiratory Protection

≤ 4 hours / shift

None

> 4 hours / shift

None

References

Controlling Silica Dust - Heavy Equipment and Utiliy Vehicles Used for Grading and Excavating Tasks