I have just carried out a six monthly three hour test on our EML, we have one room approx. (26x26ft) where two walls are 50% large windows, the two ceiling lights have failed test, one fire escape door has a luminaire above it, there are double doors with viewing panels in another direction that does not have a luminaire above it but leads to other escape routes that could be used.
The building is occupied from 8.00am until 5.00pm Monday to Thursday then by a cleaner until 7.00pm and on a Friday from 8.00am until 3.00pm.
Is it necessary that the two failed lights are replaced as batteries are no longer available?