prSRPS EN ISO 21904-4:2025

Здравље и безбедност у заваривању и сродним поступцима – Опрема за узимање и одвајање дима при заваривању – Део 4: Одређивање минималне запремине протока хватача ваздуха

Health and safety in welding and allied processes — Equipment for capture and separation of welding fume — Part 4: Determination of the minimum air volume flow rate of capture devices

Апстракт

This document specifies two methods for establishing the minimum air volume flow rate. One method is dedicated for use with captor hoods, nozzles and slot nozzles with a ratio of slot length to hose diameter of 8:1 or less. The other method is dedicated for use with on-gun extraction devices.
These methods are not applicable to down draught tables.