Skip to main content

Nuclear Accidents And Holocaust

Nuclear Energy :

Energy Released during a nuclear reaction is called nuclear energy. Nuclear Reactors produce the nuclear energy either by Nuclear fission (or) Nuclear Fusion. The Nuclear power (or) Nuclear energy is clean and safe.




Nuclear Energy and Nuclear Accidents :

The most serious hazard to human and environmental health from the nuclear accident is the release of large amounts of nuclear energy and radioactive products into the atmosphere.



Nuclear Holocaust

It means destruction of  biodiversity by nuclear equipment and nuclear bombs. In a holocaust, a large number of living beings are totally destroyed. Usually, This kind of destructions are happened in a nuclear war. 


Types of  Nuclear accidents :

1. Nuclear Test : Nuclear explosions, carried out in underground, cause settling down the radioactive materials on the earth's surface and radioactive particles, radioactive rays into the atmosphere.


2. Nuclear Power plant accidents :

The release of radiation occurs during the accidents. The nuclear power plant located in seismic vulnerable area may cause nuclear accidents.


3. Improper disposal of radioactive waste :

It is another source of accident. Drums stored underground can rust and leak radioactive materials into water, land and air .

4. Accident during transport :

Trucks carrying radioactive wastes or fuels are involved in frequent accidents.


5. Core melt Down :

The Major accident at a nuclear power plant is a "core melt down"




Comments

Popular posts from this blog

SIMPLE CARBURETOR - CONSTRUCTION AND WORKING

CONSTRUCTION OF SIMPLE CARBURETOR :  The main Components of Simple Carburetor are : Float Chamber, float, nozzle, venturi, throttle valve, inlet valve, and metering jet . In the float chamber, a constant level of petrol is maintained by the float and a needle valve.  The float chamber is ventilated to atmosphere.  This is used to maintain atmospheric pressure inside the chamber. The float which is normally a metallic hollow cylinder rises and closes the inlet valve as the fuel level in the float chamber increases to certain level. The mixing chamber contains venturi, nozzle and throttle valve. The venturi tube is fitted with the inlet  manifold. This tube has a narrow opening called venturi. A nozzle is provided just below the centre of this venturi. The nozzle keeps the same level of petrol as that of the level in the float chamber. The mixing chamber has two butterfly valves.  One is to allow air into the mixing chamber known as choke valve. The other is to al...

MELTING FURNACES FOR FERROUS METALS : CUPOLA AND ITS WORKING

Various types of melting furnaces are used in different foundry shops, depending upon the quantity of metal to be melted at a time, and the nature of work that is carried out in the shop.  The primary objective in cupola is to produce iron of desired composition, temperature and properties at the required rate in the most economical manner. Besides, this furnace has many distinct advantages over the other types, e.g., simplicity of operation, continuity of production, and increased output coupled with a high degree of efficiency.  Description Of a Cupola : The Cupola Furnace consists of a vertical, cylindrical steel sheet, 6 to 12 mm thick, and lined inside with acid refractory bricks or acid tamping clay. The refractory bricks or the tamping clay used consist of  silicon oxide acid (SiO2) and alumina (Al2O3). The lining is generally thicker in the lower where the temperatures encountered are higher than in the upper region. The shell is mounted either on a brick work fo...

Advantages And Disadvantages Of Air Refrigeration System :

 Advantages Of  Air Refrigeration : 1. The refrigerant used namely air is cheap and easily available. 2. There is no danger of fire or toxic effects due to leakages. 3. The weight to ton of refrigeration ratio is less as compared to other systems. Disadvantages Of Air Refrigeration : 1. The quantity of  Refrigerant used per ton of refrigeration is high as compared to other systems. 2. The COP of the system is very low. Therefore running cost is high. 3. The danger of frosting at the expander valves is more as the air contains moisture content.