Welding ventilation systems

welding ventilation systems

General Industry

Before welding begins, all hollow spaces or cavities should be vented to allow air and gases to escape. Mechanical ventilation of at least 2,000 cubic feet per minute per welder should be provided for workplaces with a ceiling height of less than 16 feet, or that measure less than 10,000 cubic feet per welder. Movable hoods capable of providing an airflow rate of 100 linear feet per minute should be placed as close to the welder as is practical. In situations where it is impossible to provide adequate ventilation, all workers should wear OSHA-approved airline respirators or hose masks.

Construction

Mechanical ventilation should consist of local exhaust systems or general mechanical ventilation. Local exhaust ventilation should include portable hoods that are placed as close to the welder as is practical for him to work. Exhaust that is discharged should be placed into the open air or away from the intake air source. Oxygen should not be used for ventilation purposes.

Confined Spaces

References

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Category: Ventilation

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