BS EN 286-1:1998+A2:2005

What is BS EN 286-1 - Pressure vessels about?  

BS EN 286-1 is a technical specification that applies to the design and manufacture of welded, simple unfired pressure vessels manufactured in series, with a single compartment, hereinafter referred to as vessels, the essential safety requirements of which are given in Annex G. 

BS EN 286-1 applies to vessels that: 

• Include fabrication by welding, but some designs can entail the use of bolts 
• Have a simple geometry enabling simple-to-use production procedures; this is achieved by either: 
• A cylindrical part of a circular cross-section closed by outwardly dished and/or flat ends which revolve 
• Around the same axis as the cylindrical part 
• Two outwardly dished ends revolving around the same axis 
• Have branches not larger in diameter than 0,5 of the diameters of the cylinder to which they are welded 

BS EN 286-1 applies to vessels that are intended to contain air or nitrogen which are not intended to be fired and which operate within the following constraints: 

• Subjected to an internal gauge pressure greater than 0,5 bar 
• The parts and assemblies contributing to the strength of the vessel under pressure to be made either of non-alloy quality steel or of non-alloy aluminium or non-age-hardening aluminium alloys 
• The maximum working pressure is not greater than 30 bar. The product of the maximum working pressure and the capacity of the vessel (PS _ V) is greater than 50 bar_l but does not exceed 10 000 bar_l. Below 50 bar_l, use of this standard is considered to fulfil the requirements of sound engineering practice 
• The minimum working temperature is not lower than _50 _C, and the maximum working temperature is not higher than 300 _C for steel and 100 _C for aluminium or aluminium alloy vessels 

Note 1: BS EN 286-1 does not apply to vessels specifically designed for nuclear use, to vessels specifically intended for installation in, or the propulsion of, ships and aircraft, nor to fire extinguishers. 

Note 2: BS EN 286-1 does not apply to transportation vessels nor to vessels that also contain substances other than air or nitrogen which could adversely affect their safety. For vessels designed to contain compressed air for the braking systems of road vehicles and their trailers, see also EN 286-2.  

Who is BS EN 286-1 - Pressure vessels for? 

BS EN 286-1 on pressure vessels is useful for: 

• The petrochemical industry 
• The oil and gas industry 
• The chemical industry 
• The food processing industry 
• Pressure vessels manufacturers 

Why should you use BS EN 286-1 - Pressure vessels?  

Pressure vessels are enclosed containers used to hold liquids, vapours, and gases at a pressure significantly higher or lower than the ambient pressure. Any pressure vessel that hasn't been fired is referred to as an unfired pressure vessel. This implies they aren't exposed to combustion or flames from a burner. By acting as a heat exchanger, unfired pressure vessels can aid in the prevention of corrosion.  

BS EN 286-1 provides manufacturers with instructions that apply to the vessel proper, from the inlet connection to the outlet connection and to all other connections required for valves and fittings. If bosses/pipes are used, the requirements specified herein begin or end at the weld where flanges, if used, would have been fitted. For the purposes of calculations required to be made in accordance with BS EN 286-1, dimensions are in millimetres, pressures are in bars (except where otherwise specified), and stresses are in newtons per square millimetre and temperatures are in degrees Celsius. Using BS EN 286-1 guidelines ensures safety and protection, high quality, and long service life for its users. BS EN 286-1 helps you with guidelines for quality management and durability of the pressure vessels.  

What’s changed since the last update? 

BS EN 286-1:1998+A2:2005 supersedes BS EN 286-1:1991, which is withdrawn. BS EN 286-1:1998+A2:2005 includes some editorial changes with respect to BS EN 286-1:1991. These include:  

• Scope 
• Materials 
• Weld joint design 
• Calculations coefficient 
• Flange calculations