1926.1153 Table 1—Specified Exposure Control Methods When Working With Materials Containing Crystalline Silica Equipment/task Engineering and work practice control methods Required respiratory protection and minimum assigned protection factor (APF) ≤ 4 hours/ shift >4 hours/ shift (vii) Handheld and stand-mounted

2016年6月23日 · Table 1—Specified Exposure Control Methods When Working With Materials Containing Crystalline Silica Equipment/task Engineering and work practice control methods

TABLE 1: SPECIFIED EXPOSURE CONTROL METHODS WHEN WORKING WITH MATERIALS CONTAINING CRYSTALLINE SILICA† Equipment/Task Engineering and Work Practice Control Methods require? Required Respiratory Protection and Minimum Assigned Protection Factor (APF) What does full and proper implementation ≤ 4 hours /shift > 4 hours /shift

the engineering controls, work practices, and respiratory protection specified for the task on Table 1, unless the employer assesses and limits the exposure of the employee to respirable crystalline silica in accordance with paragraph (d) of this section.

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 in their workplaces to the permissible exposure limit (PEL). What is Table 1?

Table 1: Specified Exposure Control Methods When Working With Materials Containing Crystalline Silica Adopted from the Occupational Safety and Health Administration (OSHA) Respirable Crystalline Silica Standard

Apply water and/or dust suppressants as necessary to minimize dust emissions. 1. When the equipment operator is the only employee engaged in the task, operate equipment from within an enclosed cab.

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 PEL in their workplaces.

Table 1, the employer shall fully and properly implement the engineering controls, work practices, and respiratory protection specified for the task on Table 1, unless the employer assesses and limits the exposure of the employee to respirable crystalline silica in accordance with paragraph (d) of this section. T. ABLE . 1: S. PECIFIED . E ...

To protect workers exposed to respirable crystalline silica, OSHA has issued two respirable crystalline silica standards: one for construction, and the other for general industry and maritime.