Challenges of TEPCO

  1. Energy & Resources

Nuclear power generation produces massive amounts of energy from comparatively small quantities of fuel. Once fuel has been added to the reactor, a nuclear power plant can run continuously for approximately one year without adding or exchanging fuel. It also excels in global environmental protection, due chiefly to the absence of atmospheric pollutants that cause acid rain and CO2 in emissions during power generation.

Fuel Cycle


There are several types of reactors in use worldwide, but the most popular is the light water reactor (LWR). In LWRs, to achieve nuclear fission efficiently and continuously, light water (normal water) is used for decelerating neutrons and also for heat recovery.

All commercial nuclear reactors in Japan are LWRs, which are further categorized into two types, the boiling water reactor (BWR) and the pressurized water reactor (PWR), according to differences in the steam generating mechanism.


Advanced BWR
The advanced BWR is the result of the continuing evolution of the BWR, incorporating state-of-the-art technologies and many new improvements based on an extensive accumulation of world wide experience through design, construction, and operation of BWRs.

ABWR adopted Reactor Internal Pump(RIP),instead of Reactor Coolant Re-circulation Pump in conventional BWRs. This RIP eliminates re-circulation piping outside Reactor Pressure Vessel (RPV), resulting in improvement in operability and safety.

This also enables the center of gravity of the reactor building to be lowered, making the building more resistant against earthquakes.

The integration of the Reinforced Concrete and Containment Vessel (RCCV) and reactor building has increased resistance against deformation.


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