once we had a project: 2 rocket silos were built in a row not far from us. the highest level of safety was requested. ATEX was a questionmark, but it was denied at the time of approval: only for one reason: we are from the army – we do not take care about such things. at the time of installation they already requested some kind of guidance – for that purpose ATEX was chosen, bec nobody was willing to cause or even experience any unwanted explosion.
I was there in person questioning them about the applied hazardous material. answer was short: military secret. my hazardous area spec was even shorter: Zone 1 IIC T6. each of us was very satisfied 😉 5 minutes work from my side. one of my shortest project ever.
rocket silo.jpg
there are many areas of “industries” which are our of the coverage of explosion protection like army, fire brigades, hospitals, fireworks, etc – but when it goes to installations the immediately require support, so they come back to the guidance of explosion protection.
For Example – ATEX Directive:

This Directive shall not apply to:


medical devices intended for use in a medical environment;


equipment and protective systems where the explosion hazard results exclusively from the presence of explosive substances or unstable chemical substances;


equipment intended for use in domestic and non-commercial environments where potentially explosive atmospheres may only rarely be created, solely as a result of the accidental leakage of fuel gas;


personal protective equipment covered by Council Directive 89/686/EEC of 21 December 1989 on the approximation of the laws of the Member States relating to personal protective equipment (9);


seagoing vessels and mobile offshore units together with equipment on board such vessels or units;


means of transport, i.e. vehicles and their trailers intended solely for transporting passengers by air or by road, rail or water networks, as well as means of transport in so far as such means are designed for transporting goods by air, by public road or rail networks or by water. Vehicles intended for use in a potentially explosive atmosphere shall not be excluded from the scope of this Directive;


the equipment covered by point (b) of Article 346(1) of the Treaty on the Functioning of the European Union.

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