AIR INFLOW PREVENTION TYPE MANHOLE FOR DRAINAGE CULVERT OF THERMAL POWER PLANT

摘要

This invention provides a thermal power plant , such as nuclear power plants or thermal power plants which relates to a manhole (manhole), by providing a projection wall at the bottom of the manhole to manhole is preventing inflow of air bubbles contained in the thermal ( ). ; through the invention of thermal power plants Thermal been able to prevent the foam ejected through the developer was a chronic problem in the maintenance of the drainage culvert manhole fundamentally , through which is also ensure the safety of the plant operation can be obtained an effect of reducing the course , maintenance costs .