Visit Mitsubishi Electric & Smarter Grid Solutions at booth #4617.

Discover new technologies in DERMS, Power Quality Compensators, Vacuum Circuit Breakers, autonomous substation monitoring, renewable integration and more. February 7-9, 2023 in San Diego, CA.
Learn More

We’re here to help.

Our expert sales staff have the knowledge, experience and vision to help you with your Power Generation requirements.

Contact Us

Incore Instrumentation System

The Mitsubishi Electric Incore Instrumentation System (ICIS) measures neutron flux distribution in the reactor core.

The ICIS routes the movable incore neutron detectors into the selected core locations (thimbles) to receive the current signals proportional to the neutron flux. The ICIS cabinets display and record these signals t​​​​o provide input to the core management computer. The neutron flux information obtained from the ICIS is used to construct accurate core power distribution. The ICIS cabinet is implemented with a digital nuclear instrumentation and Control (I&C) platform MELTAC®.

Incore Instrumentation System diagram

System Configuration

The Mitsubishi ICIS is composed of mechanical components and ICIS cabinets.

  • Detector: Measures the neutron flux in the reactor core. Detector is inserted and withdrawn into the core through thimbles by using a motor driven wheel that meshes with the detector driven cable.
  • Thimble: Serves as a guide tube through which the detector is routed into the selected core location
  • Drive unit: Inserts and retrieves/extracts the detector from the selected core location.
  • Path Transfer device: Selects the core location (thimble path).
  • ICIS cabinet: Controls and monitors mechanical components and receives detector signals, displays detector status, performs manual operations for insertion-extraction of the detector and system alerts.

System Features

The Mitsubishi Electric ICIS uses the following components to ensure high reliability and maintainability.

  • A brushless resolver is used to indicate the detector location with exceptional accuracy.
  • The path transfer device, used for detector path selection, uses a roller-gear cam mechanism to ensure high reliability and maintainability.
  • An inverter-controlled induction motor is used to drive the detector to ensure high reliability, maintainability and long service life of the motor brake.
  • The ICIS cabinet uses the detector to automatically measure and record the neutron flux distribution in a predetermined (configurable) sequence​. Data is stored in external media (e.g. DVD) for use in the core management program.

Other Products

featured image

MR Computer

Learn More
featured image

Safety Protection System

Learn More
featured image

Digital Rod Position Indication System

Learn More
featured image

Control Rod Drive Mechanism Control System

Learn More
featured image

Radiation Monitoring System

Learn More
featured image

Nuclear Instrumentation System

Learn More
featured image

Turbine Electro Hydraulic Governor Control System

Learn More
featured image

Turbine Protection System

Learn More

Reliable, Secure and Sustainable Energy Systems

feature icon

Industries

Energy systems to power a safe, sustainable, and secure future

feature icon

Services

Providing inspection, maintenance, upgrades and service for energy power systems

feature icon

Solutions

Turnkey engineering, design, logistical and project management solutions

We’re here to help.

Our expert sales staff have the knowledge, experience and vision to help you with your Power Generation requirements.

Contact Us