Hi everyone, came across this forum whilst looking for regulations on fire exits but all the documentation fried my brain and left me not much wiser really.  
I need to find out how far away from a fire exit you can have an obstruction externally. 
  
We have a fire exit door from our commercial premises and we need to install an oil tank outside the building, we have been told my a plumber that we are ok to install an oil tank in the mentioned area but I wanted to clarify before we go ahead with anything.  
As soon as you're out from a fire exit, how many metres, if any, have got to be left as a clear path? 
  
I'm in Wales if that makes any difference. 
  
Any help would be greatly appreciated. 
  
Thanks in advance.