Plastics piping systems for the supply of gaseous fuels for maximum operating pressures up to and including 2 MPa (20 bar). Polyamide (PA) - Fitness for purpose of the system1 Scope This part of ISO 22621 specifies the requirements of fitness for purpose of the polyamide (PA) piping system, intended to be buried and used for the supply of gaseous fuels at maximum operating pressures (MOP) up to and including 2 MPa (20 bar1)). It specifies the definitions of electrofusion and butt fusion joints. It also specifies the method of preparation of test piece joints and the tests to be carried out on these joints for assessing

The method evaluates only the self-cleaning ability of the material under ultraviolet light irradiation

this document aims to:

energy consumption of data centres has become critical both from an environmental point of view (reduction of carbon footprint) and with respect to economic considerations (cost of energy) for the data centre operator

It defines the IEC 61850information models to be used in the exchange of information between these power converter-based DER systems and the utilities

Clearer description of test equipment and apparatus

NOTE 1 Requirements in this document are essentially applicable to both groups of the mechanical press

Several defoaming mechanisms readily dissipate macrofoam

NOTE 1 To assist purchasers Appendix A lists information which should be supplied when ordering flanges

This standard is a complement to existing general standards for ventilation that are focused on human comfort

Durability of compression after repeated washing

nano-enhanced façade coating

While analysing solid content on oils containing sludge refers to method for sediment and sludge determination in IEC 60422