(c)Locks and fastenings: The distiller shall provide and maintain suitable and secure fastenings and club locks or any other equally suitable locks made in India and approved by the Excise Commissioner, where necessary, to all stills, spirit receivers, fermentation rooms, store rooms, pipes etc., to the satisfaction of the Excise Commissioner. The keys of all such locks shall be kept in the personal custody of the officer-in-charge and the distiller, if he directs may put his own additional locks on all stills, receivers, etc., but shall be bound immediately to remove those locks, when required by the officer-in-charge, to allow free inspection.