From GAWDAwiki
BSI stands for British Standards Institute. Standards published by this organization are denoted "BS" and are generally followed by a number and date, e.g. "BS341. Part 1 1991 - Valve fitting for compressed cylinders." More than 100 standards are relevant to cutting and welding and relate to design, inspection, testing and maintenance of cylinders and equipment, safety clothing, consumables and welding practice. British Standards are increasingly being replaced by European standards in which BSI inputs the UK view. These standards are denoted BS EN. [1]
References
- http://www.bocindustrial.co.uk/bocindustrial/technical/glossary/a.asp