Gas cylinders. Refillable welded steel cylinders. Test pressure 60 bar and below1 Scope This International Standard specifies the minimum requirements concerning material selection, design, construction and workmanship, procedure and test at manufacture of refillable welded steel gas cylinders of a test pressure not greater than 60 bar1), and of water capacities from 0,5 l up to and including 500 l exposed to extreme worldwide temperatures (50 C to +65 C) used for compressed, liquefied or dissolved gases. Transportable large

optical disks

Appliances with a cooling fan

BS EN 61851-21-1:2017 supersedes BS EN 61851-21:2002

Ventilation system installers

Annex B (informative) Methods for the determination of coating properties likely to be relevant to

and format for the presentation of functional performances values

concentration measurements and air sampling

excluding escape route signs

The developed approach is exemplified for measurement procedures not covered earlier by other guidance documents on the topic

Renders and plasters can form the final surface of the structure

The dimensions of the test specimen might be smaller than typical items of structure and plant

radioactivity and its measurement