To make sound signal measurement by suppressing external noises caused by electrostatic induction and electromagnetic induction in a state quantity measuring system having the flexible conduit tube of a nuclear power plant used for the cable penetration having the possibility of the occurrence of object displacement or at an interface position to a reactor building.
This state quantity measuring system is provided with a detector detecting the state quantity of a reactor, a cable transmitting the state quantity, and a conduit tube storing the cable and constituted of a flexible conduit tube section 51 and a thick steel conduit tube section connected to it. The peripheral surface of the flexible conduit tube section 51 is covered with an electromagnetic shielding body not impairing its flexibility.
TOKAWA YUICHI
SHIROICHI HISATOKU
ARITA SETSUO
TAWATA YASUKIYO
YOSHINARI HIROSHI
ISHII KAZUHIKO
