oSIST prEN ISO 5829:2020

ISO 21904-1 defines the general requirements for ventilation equipment used to capture and separate fumes generated by welding and allied processes, e.g. arc welding and thermal cutting.This document also specifies the test data to be marked on the capture devices.It applies to the design and manufacture of parts of the equipment including hoods for welding, ducting, filter units, air movers, systems that inform of unsafe operation and workplace practices to ensure safe working with regard to ex...view more

EN-ISO 21904-2 specifies a method for testing equipment for the separation of welding fume in order to determine whether its separation efficiency meets specified requirements.The method specified does not apply to testing of filter cartridges independent of the equipment in which they are intended to be used.This document applies to equipment that is manufactured after its publication.

EN-ISO 21904-4 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.

This document specifies requirements for rubber hoses (including twin hoses) for welding, cutting and allied processes. This document specifies requirements for rubber hoses for normal duty of 2 MPa (20 bar) and light duty [limited to hoses for maximum working pressure of 1 MPa (10 bar) and with bore up to and including 6,3 mm]. This document applies to hoses operated at temperatures -20 °C to +60 °C and used in: - gas welding and cutting; - arc welding under the protection of an inert or active...view more

This document specifies the maximum external gas leakage rates which are acceptable for equipment used for welding, cutting and allied processes and provides the procedures of measurement. It applies to individual components which are used in the gas supply to a blowpipe from the connecting point of the hose (outlet of the cylinder valve or connecting point to a gas supply plant). It does not apply to gas supply plant.

This document specifies requirements for Bourdon-tube pressure gauges normally used with
compressed gas systems at pressures up to 30 MPa (300 bar) in welding, cutting and allied processes. It
also covers use for dissolved acetylene and for liquefied gases under pressure.
It does not cover gauges for acetylene in acetylene-manufacturing plants.

This European Standard lays down the dimensions and specifies the characteristics of the constituent parts of hose connections for welding, cutting and allied processes, for example for pressure regulators according to EN ISO 2503 and blowpipes. The suitability of the hose connections mentioned below is considered according to the applied pressure range. This European Standard does not cover the design of the part of the hose tail inserted into the hose. This is specified in EN 1256.

This document applies to acetylene cylinder manifold systems extending from the cylinder valve or the
bundle outlet connections to the outlet connection of the main shut-off valve. It specifies requirements
for design, materials and testing of cylinder manifold systems for the supply of acetylene for use in
welding, cutting and allied processes.
This document applies to acetylene cylinder manifold systems in which acetylene single cylinders or
acetylene bundles are coupled for collective ga...view more

This standard constitutes a compilation of technical terms and definitions specifically related to gas welding equipment.

This document specifies additional requirements to those given in ISO 5826 for single-phase inverter
transformers with connected rectifier for DC welding. This document applies to transformers, primarily
used in welding guns, operating at 1 000 Hz with a rated input voltage of 500 V or more.
The requirements of ISO 5826 shall be followed unless amended by this document.