Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 43 - TUNNEL CONSTRUCTION AND COMPRESSED AIR WORK
Subchapter A - TUNNEL CONSTRUCTION AND WORK IN COMPRESSED AIR
WORK IN COMPRESSED AIR-GENERAL
Section 43.60 - Ventilation

Universal Citation: 34 PA Code ยง 43.60

Current through Register Vol. 54, No. 38, September 21, 2024

(a) The supply of fresh air to the working chamber shall be sufficient at all times to permit work to be done without danger or discomfort. All air supply lines shall be equipped with check valves and carried as near to the face as practicable. The air shall be analyzed by the contractor as required and a record shall be kept of such analysis.

(b) Each working chamber shall have exhaust valves, with risers extending to the upper part of the chamber if necessary. The exhaust valves shall be operated at such times as may be required and especially after a blast, and men shall not be required to resume work after a blast until the gas and smoke have cleared.

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