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Subchapter 7. General Industry Safety Orders
Group 16. Control of Hazardous Substances
Article 107. Dusts, Fumes, Mists, Vapors and Gases
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§5141. Control of Harmful Exposure to Employees.

Guide to Respiratory Protection at Work

(a) Engineering Controls. Harmful exposures shall be prevented by engineering controls whenever feasible.

(b) Administrative Controls. Whenever engineering controls are not feasible or do not achieve full compliance, administrative controls shall be implemented if practicable.

(c) Control by Respiratory Protective Equipment. Respiratory protective equipment, in accordance with Section 5144, shall be used to prevent harmful exposures as follows:

(1) During the time period necessary to install or implement feasible engineering controls;

(2) Where feasible engineering controls and administrative controls fail to achieve full compliance; and

(3) In emergencies.

NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.


1. Repealer and new section filed 7-18-75; effective thirtieth day thereafter (Register 75, No. 29).

2. Repealer and new section filed 5-25-79; effective thirtieth day thereafter (Register 79, No. 21).

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