Electrical Safety
When using wet methods with electrical equipment of any kind, be sure to use ground-fault circuit interrupters (GFCIs) and watertight, sealable electrical connectors. These features are particularly important to employee safety in wet or damp areas, such as where water is used to control dust.
Although an assured equipment grounding conductor program is an acceptable alternative to GFCIs, OSHA recommends employers use GFCIs where possible because they afford better protection for employees.
Freezing Temperatures
Freezing temperatures complicate the use of water. Consider heating the local work area, if practical, to prevent ice from forming in the water-feed system.
Drain the system when not in use. Large portable heating units are commonly used to heat commercial and sometimes road and highway projects.
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5-4. What should the employer do when using wet methods with electrical equipment of any kind to limit exposure to silica dust?
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