1926.1153(c): Silica Table 1 Exposure Control Methods

(c) Specified exposure control methods. 932 citations

(1) For each employee engaged in a task identified on 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. Open (c)(1) 914 citations

(2) When implementing the control measures specified in Table 1, each employer shall: Open (c)(2) 17 citations

(i) For tasks performed indoors or in enclosed areas, provide a means of exhaust as needed to minimize the accumulation of visible airborne dust; 3 citations

(ii) For tasks performed using wet methods, apply water at flow rates sufficient to minimize release of visible dust; Open (c)(2)(ii) 13 citations

(iii) For measures implemented that include an enclosed cab or booth, ensure that the enclosed cab or booth: 1 citations

(A) Is maintained as free as practicable from settled dust;

(B) Has door seals and closing mechanisms that work properly;

(C) Has gaskets and seals that are in good condition and working properly;

(D) Is under positive pressure maintained through continuous delivery of fresh air;

(E) Has intake air that is filtered through a filter that is 95% efficient in the 0.3-10.0 µm range (e.g., MERV-16 or better); and

(F) Has heating and cooling capabilities.

(3) Where an employee performs more than one task on Table 1 during the course of a shift, and the total duration of all tasks combined is more than four hours, the required respiratory protection for each task is the respiratory protection specified for more than four hours per shift. If the total duration of all tasks on Table 1 combined is less than four hours, the required respiratory protection for each task is the respiratory protection specified for less than four hours per shift. 1 citations