Highly Available Nuclear Power in a Microgrid Configuration for the ORNL Distribution System

2021 ◽  
pp. 1-15
Author(s):  
Jeremiah Doyle
2011 ◽  
Vol 26 (S1) ◽  
pp. s75-s75
Author(s):  
P. Cruz Flores

Socioeconomic impact of “Hurricane Karl” on health facilities in Veracruz, Mexico with a population of 7 million 600 thousand in September 2010 Summary Hurricane Karl, thirteenth tropical cyclone of the season in the Atlantic hurricane of 2010, originated in the Caribbean Sea and slammed into the Yucatan Peninsula as a strong tropical storm, to emerge into the Gulf of Mexico where it gradually reorganized to achieve Category 3 (major hurricane) on the Saffir-Simpson scale and hit the east coast of Mexico on September 17th of 2010. Preparations On September 16th, the Federal Government, Federal Electricity Commission, Laguna Verde Nuclear Power Plants, The Ministry of National Defense, The Ministry of Marine Affairs and human elements and materials deployed for relief to the population. The health sector also was prepared to take appropriate measures under the concept of Safe Hospital PAHO / WHO. Impact In the state of Veracruz (more than 7 million 600 thousand habitants), Hurricane Karl arrived around 11:30 am on September 17th to 15 km north of the port of Veracruz reaching a capacity of 195 km per hour. Torrential rains flooded the streets of the phenomenon and avenues of the historic center of the port, the water reached 40 centimeters to 1 meter in height, to the south of the state and surrounding areas reached 2 meters in height. Caused serious damage since its inception in health infrastructure, such as suspension of public services, damage to the distribution system of drinking water, broken windows and flooding of a hospital as well as several units of Family Medicine.


Author(s):  
Barış Can Yalçın ◽  
Cihan Demir ◽  
Murat Gökçe ◽  
Ahmet Koyun

In most city water distribution systems, a considerable amount of water is lost because of leaks occurring in pipes. Moreover, an unobservable fluid leakage fault that may occur in a hazardous industrial system, such as nuclear power plant cooling process or chemical waste disposal, can cause both environmental and economical disasters. This situation generates crucial interest for industry and academia due to the financial cost related with public health risks, environmental responsibility, and energy efficiency. In this paper, to find a reliable and economic solution for this problem, adaptive neuro fuzzy inference system (ANFIS) method which consists of backpropagation and least-squares learning algorithms is proposed for estimating leakage locations in a complex water distribution system. The hybrid algorithm is trained with acceleration, pressure, and flow rate data measured through the sensors located on some specific points of the complex water distribution system. The effectiveness of the proposed method is discussed comparing the results with the current methods popularly used in this area.


Author(s):  
Yu Liu ◽  
Chunming Ren

Based on the measured parameters, including core power distribution, system pressure, inlet coolant temperature and flow, departure from nucleate boiling ratio (DNBR) can be calculated on-line. This paper presents a strategy to develop the DNBR online monitoring and protection system for PWR nuclear power plant (NPP). The main functions are to provide core DNBR status to operator and to replace the delta-T protection in conventional PWR NPPs. The system structure consists of two different levels respectively for monitoring and protection. There are four cabinets in each level to insure the reliability. DNBR on-line algorithm is on the basis of a modified single channel thermal-hydraulic model. A computer program was developed and verified through comparison with the sub-channel code.


Author(s):  
John D. Rubio

The degradation of steam generator tubing at nuclear power plants has become an important problem for the electric utilities generating nuclear power. The material used for the tubing, Inconel 600, has been found to be succeptible to intergranular attack (IGA). IGA is the selective dissolution of material along its grain boundaries. The author believes that the sensitivity of Inconel 600 to IGA can be minimized by homogenizing the near-surface region using ion implantation. The collisions between the implanted ions and the atoms in the grain boundary region would displace the atoms and thus effectively smear the grain boundary.To determine the validity of this hypothesis, an Inconel 600 sample was implanted with 100kV N2+ ions to a dose of 1x1016 ions/cm2 and electrolytically etched in a 5% Nital solution at 5V for 20 seconds. The etched sample was then examined using a JEOL JSM25S scanning electron microscope.


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