To simply inspection and examine a spray nozzle in a short time by using an exclusive jig without cutting the thick welded part of the spray nozzle and a spray nozzle neck.

A through hole 2 is formed in a spray pipe 3 provided in the superheater of a boiler or the like. A cylindrical spray nozzle neck 5 is connected to the through hole 2. A spray nozzle 4 having its end part facing the inner part of the spray pipe 3 and its base end part connected to a cooling water supply pipe 20 is inserted and attached into the spray nozzle neck 5. An engaging groove 7 is formed on the inner peripheral part of the base end part of the spray nozzle 4. Upon maintenance, a spray nozzle pulling-up jig 8 is engaged with the engaging groove 7, go that the spray nozzle 4 is pulled up from the spray nozzle neck 5.