SAMPLING NOZZLE MOUNTING METHOD TO STEEL TOWER SUPPORT TYPE EXHAUST STACK

PROBLEM TO BE SOLVED: To provide a sampling nozzle installation method to a steel tower support type exhaust stack capable of shortening the length of a sampling nozzle to be installed to the exhaust stack, and reducing an inspection scaffold of the sampling nozzle. SOLUTION: In the sampling nozzle mounting method of an exhaust stack radiation monitor device to a steel tower support type exhaust stack 1 of a nuclear power plant, sampling nozzles 3a, 3b are inserted from right and left both sides of the steel tower support type exhaust stack 1 so as to be extractible, and the right and left sampling nozzles 3a, 3b are arranged on one straight line passing the center of the steel tower support type exhaust stack 1. The right and left sampling nozzles 3a, 3b are connected to a sampling pipe through conduit tubes 13a, 13b at the outside of the tower support type exhaust stack 1. Each length of the isokinetic sampling nozzles 3a, 3b becomes about a half of a conventional isokinetic sampling nozzle, and also the inspection scaffold 27 necessary for the inspection of the isokinetic sampling nozzles 3a, 3b can be stored in the steel tower for supporting the steel tower support type exhaust stack 1. COPYRIGHT: (C)2011,JPO&INPIT