Refund of capacity based excise duty can be claimed even if factory was closed for one day

Excise & Customs : In context of capacity based excise duty, there is difference between 'temporary non-production for 15 days or more' and 'closure of factory'; in case of 'closure of factory' for even 6 days, assessee cannot be made liable to pay duty and if duty has already been paid, same is liable to be refunded back to assessee