osha: Silica Exposure Rules
THE CONSTRUCTION STANDARD
What does the new Silica Rule mean for you?
Find out here.
Employers can either use a control method laid out in Table 1* of the construction standard, or they can measure workers’ exposure to silica and independently decide which dust controls work best to limit exposures to the Permissible Exposure Level (PEL) in their workplaces.
Compliance Schedule
Construction: June 23, 2017
General Industry and Maritime: June 23, 2018
Hydraulic Fracturing: June 23, 2018
Table 1: Specified Exposure Control Methods
When Working with Materials Containing
Crystalline Silica
Dust Control Methods
Respirator/Assigned Protection Factor
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.
≤ 4 hrs / Shift
> 4 hrs / Shift
When Outdoors
None Yes, APF 10
When indoors /
Enclosed Area
Yes, APF 10 Yes, APF 10
Exposure Control Specifications
• Measure the amount of silica that workers are exposed to if it may be at or above an action level of 25 μg/m3 (micrograms of silica per cubic meter of air), averaged over an eight hour day.
• Protect workers from respirable crystalline silica exposures above the permissible exposure limit of 50 μg/m3, averaged over an eight-hour day.
The Standards Necessary Requirements
Establish and implement a written exposure control plan that identifies tasks that involve exposure and methods used to protect workers,
including procedures to restrict access to work areas where high exposures may occur.
Designate a competent person to implement the written exposure control plan.
Restrict practices that expose workers to silica where feasible alternatives are available.
Offer medical exams—including chest X-rays and lung function tests—every three years for
workers who are required by the standard to wear a respirator for 30 or more days per year.
Train workers on work operations that result in silica exposure and ways to limit exposure.
Keep records of workers’ silica exposure and medical exams.
Where the Standard Does Not Apply
The standard does not apply where exposure will remain low under any foreseeable condition; for example, when only performing tasks such as mixing mortar; pouring concrete footers, slab foundation and foundation walls; and removing concrete form work.
Additional information on OSHA’s silica rule can be found at www.osha.gov/silica.
To locate the OSHA On-site Consultation Program nearest you, call 1-800-321-OSHA (6742).
Farrell Equipment & Supply Co., Inc.
- Eau Claire, WI:
- Appleton, WI:
- La Crosse, WI:
- Madison, WI:
- Rochester, MN:
- Wausau, WI:
voice: 715-835-4334
voice: 920-903-1985
voice: 608-796-9300
voice: 608-222-5372
voice: 507-252-0234
voice: 715-355-8300
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Eau Claire Store:
800-533-0909
1510 N. Hastings Way
Eau Claire, WI 54703
voice: 715-835-4334
fax: 715-835-4356
Appleton Store:
800-533-0909
1002 Truman Steet
Kimberly , WI 54136
voice: 920-903-1985
fax: 920-903-8278
La Crosse Store:
800-533-0909
508 Monitor Street
La Crosse, WI 54603
voice: 608-796-9300
fax: 608-796-9435
Madison Store:
800-533-0909
6809 Mangrove Lane
Monona, WI 53713
voice: 608-222-5372
fax: 608-222-5405
Rochester Store:
800-533-0909
1635 3rd Avenue S.E.
Rochester, MN 55904
voice: 507-252-0234
fax: 507-252-0222
Wausau Store:
800-533-0909
7405 Commerce Drive
Weston, WI 54476
voice: 715-355-8300
fax: 715-298-1662