Rank: Forum user 
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Hi All
My business have just purchased a large oxidiser store. The store is a large double skinned, steel, walk in container. The container has good ventillation vents installed on all sided, high and low. I have had a question from one of the engineers on the type of lighting to install into the store. Would the store need Zone two lighting or would normal lighting and electrical fittings surfice?
It is highly unlikely that an explosive atmosphere would build up in the store as all containers are sealed and never opened in the store area.
I would appreciate your views on this.
Thankyou
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Rank: Super forum user 
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Chris
You say its unlikely an explosive atmosphere would occur because the containers are never opened in the store.
What would happen if you had a leakage in one or more of the containers?
You say it’s a large store but that could means many things, I have seen a pallet put into a warehouse by FLT that damages a number of products on a pallet behind. Following morning large puddle on the ground. Fortunately not a substance that could cause an explosive atmosphere so just a training issue with driver and a cost to the company.
Apologies if you have already considered this.
Brian.
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Rank: Forum user
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Hi, Agree with Brian - also might be useful if you haven't already done so to have a look through the HSE document L136 DSEAR Control and Mitigation measures which is freely available on their website at the following link http://www.hse.gov.uk/pubns/priced/l136.pdfCheers Steve
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Rank: New forum user
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If the drum contents are flammable then you will need to carry out a Hazardous Area Classification risk assessment to determine the likelihood of a loss of containment and subsequent formation of flammable atmosphere.
It sounds like it will be a zone 2 area (assuming you are storing flammables) as a flammable atmosphere will not occur during normal operation (only if there is an abnormal occurrence), but if it does, it will only hang around for a short period. The natural ventilation you mention will help to dissipate vapour from any unexpected occurrence.
If the materials to be stored are not flammable then just need lighting that is appropriate for the environmental conditions within the store (wet, damp, cold, hot etc...).
The upshot is, get someone in to do an hazardous area classification assessment and take it from there.
Cheers,
Coytanger.
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Rank: Forum user 
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Are the oxidisers actually flammable?
Another question you may need to consider is whether a hot broken tube will be enough to start the oxidisers self destructing? If yes, it's another reason for sealed units.
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