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
NORM herausgegeben am 1.9.2020
Bezeichnung normen: ČSN EN ISO 21904-4
Zeichen: 050682
Katalog-Nummer: 510400
Ausgabedatum normen: 1.9.2020
Zahl der Seiten: 24
Gewicht ca.: 72 g (0.16 Pfund)
Land: Tschechische technische Norm
Kategorie: Technische Normen ČSN
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