Simulation of the start-up of a Hydro Power plant for the emergency power supply of a nuclear power station

2001 ◽  
Vol 16 (1) ◽  
pp. 163-169 ◽  
Author(s):  
D. Lindenmeyer ◽  
A. Moshref ◽  
M.C. Schaeffer ◽  
A. Benge
Keyword(s):  
Power Plant ◽  
Nuclear Power Station ◽  
Power Supply ◽  
Nuclear Power ◽  
Power Station ◽  
Hydro Power ◽  
Start Up ◽  
Emergency Power

Lessons From an Operational Small Leakage at Tsuruga Nuclear Power Station

2015 ◽  
Author(s):  
Hiroyuki Kobayashi ◽  
Osamu Urabe ◽  
Takushi Fujino
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power Station ◽  
Nuclear Power ◽  
The Other ◽  
Leak Test ◽  
Power Station ◽  
Long Time ◽  
Short Time ◽  
Repair Techniques

Operational small leakage is occasionally observed in a nuclear power plant, and the leak forces an operator to decide whether to shut down the plant or not. Even if the leakage is just a little, it might draw the considerable attention in the society, so that the operator sometimes gets into the situation to judge more severely than technical judgment. Furthermore, at the time of plant restart and the system leak test just after maintenance, even the operator doesn’t accept any leakage considering the long management for the leakage up to the next outage. On the other hand, once the operator shut down the plant, it sometimes takes long time to restart again because of the difficulty to obtain new pipes and valves in short time. The temporary repair techniques referred to the JSME code might be able to be applied to maintain the plant operation, however some difficulties exist in a practical process. One of the authors has faced with many cases in which the operational small leakage had to be dealt at Tsuruga nuclear power station. This paper shows some cases of them and discusses lessons which are related to the codes and standards.

Researches on the Simulation of the Degasifying Column Used in Nuclear Power Plant

2013 ◽  
Author(s):  
Jianhua Xie ◽  
Quanliu Ye ◽  
Jinchun Yang
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power Station ◽  
Nuclear Power ◽  
Aspen Plus ◽  
The Other ◽  
Power Station ◽  
Simplified Models ◽  
Simulation Results ◽  
Aspen Simulation

The degasifying column is an important unit in nuclear power station. In order to verify the performance of the column, the degasifying process has been simulated by using the well-known software ASPEN Plus and on a basis of some proper hypothesizes and simplified models. Degasifying column is found that it has good capability on taking out key components such as krypton and oxygen from reactor coolant. On the other side, it’s difficult to carry out radioactive gas experiment on site which is seriously enslaved to the potential radioactive harm on operators. Simulation by using ASPEN Plus is a good way to solve this problem. Furthermore, three kinds of experiments such as ASPEN simulation, deoxidation experiment and radioactive gas experiment on site which are used for validating the performance of column are compared. The comparison shows that ASPEN simulation has less risk and less costs, but the simulation results are more exact and credible. Moreover, the debugging process of the column can be inducted and improved according to the simulation.

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