Hence the use of non-ferrous impact tools in hazardous areas. As Jay points out, this can also happen when aluminium impacts with iron oxide - rust. In practice, aluminium has a passive outer layer of aluminium oxide, and most steelwork is coated in paint, so the chances of the right conditions being present for a reaction are slim.
Abtech ZAG aluminium electrical enclosures and junction boxes are ATEX certified and suitable for Zone 1 and Zone 2 hazardous areas. Abtech ZAG enclosures are available in 19 diffferent sizes manufactured from precision die cast in Al Si 12 grade (LM24) aluminium alloy – the ambient temperature of ZAG range is from -70°C to 130°C.
Abtech SSD aluminium electrical enclosures and junction boxes are ATEX certified and suitable for Zone 1 and Zone 2 hazardous areas. The Ex d enclosure designed to house electrical and electronic apparatus within Zone 1 and 21 hazardous areas.
Aluminum Plate - 3003, 5052, 6061. 5052-H32 Aluminum Plate - (ASTM B209, QQ-A-250/8) Superior corrosion resistance, good weldability, with excellent formability, makes 5052 Aluminum Plate a common choice for chemical, marine or saltwater applications. 5052 Aluminum Plate applications include: tanks, drums, marine hardware, boat hulls,...
Atex-Delvalle are the leading certified assembler of atex & IECEx, Ex junction boxes, control & distribution boxes, swiches, Load Disconnect Switches, explosion motor starters, . With an extensive stock holding for express deliveries of stainless steel Ex enclosures, our workshops are able to provide unrivalled competence, expertise, quality ...
Aluminium in explosion-proof electrical protection. These alloys, however, can not be used for the construction of flameproof enclosures or of any component that is used in areas with potentially explosive atmospheres. In fact, the aluminium magnesium alloys may cause sparks when rubbed with metal tools.
Health and safety regulations like ATEX are designed to eliminate such risks. With this in mind, ATEX regulations simply recommend against using aluminium. In many parts of the world, aluminium is actually banned from underground mines.This is certainly the case in the USA where thermite reactions were responsible for 11 mine explosions in the 1950s.
Although aluminium is anodic to stainless steel, large relative surface areas of aluminium to stainless steel can be acceptable, dependant on local conditions. Stainless steel fasteners in aluminium plates or sheets are normally considered safe, whereas aluminium rivets or bolts holding stainless steel parts together is an unwise combination, as there is a practical risk of corrosion.
The geographical reach of ATEX regulations extends beyond the European Union. Authorities and companies around the world find it easy to specify ATEX as the minimum standard for equipment used in mines, on platforms and at other dangerous sites. It is only a matter of time until ATEX approval is a global standard but, as it stands,
The ATEX directive consists of two EU directives describing what equipment and work space is allowed in an environment with an explosive atmosphere. ATEX derives its name from the French title of the 94/9/EC directive: Appareils destinés à être utilisés en ATmosphères EXplosives .