Within the ten mile area residents will be warned primarily by radio and television stations. State and county emergency response organizations will determine protective action to be taken, and you will be kept informed.
During the period of the emergency, state and county officials will release information to the media on a regular basis. This information will contain the latest status on the emergency and action that are being taken to protect you, your family and your farm. Also, the local agricultural extension agent will be kept advised on the status of the emergency and can provide information protective actions that are being taken. You will also be advised of television phone numbers you may call if you need additional information.
The principal cause of exposure to radiation for ten to fifty miles from a nuclear power plant radiological emergency is the consumption foods such as milk, fresh fruits, vegetables, locally processed products and water.
In the event of a radiological emergency that involves the release of radioactivity into the environment, you will be advised of action to prevent the contamination of milk, water and food products. Additionally, state and local governments will take actions to prevent the consumption of contaminated products. Farm animals will not be evacuated during a radiological emergency, so sheltering is the most effective way to limit contamination. The most critical food product within the fifty mile zone is milk because of rapid distribution from the cow to the consumer, the short period of time it takes for contamination to appear and the potential effects on children.
Protective actions that can be taken are:. Remove lactating dairy animals from contaminated pasture and provide a substitute of uncontaminated stored feed. Most farmland that is contaminated by a radiological emergency can be used productively within several days of the emergency. The actual length of time depends on the amount and types of radioactive material that settled on the land. Recommend treatment procedures such as idling of the land, deep plowing of the soil, or alternative uses of the land.
Emergency officials will issue special emergency bulletins on proper use and disposition of crops. For information on harvesting, storing and decontaminating your crops and land, you may contact your Extension Agent.
It is considered dangerous to inhale or ingest tritium, because, once incorporated, it can damage DNA, causing mutations and cancer. According to TVA, the contamination was most likely caused by a spill in the s or an overflow of the canal in This raises many questions, such as how many leaks occurred in total, how many of these were actually reported and how high the concentration levels would have been at the time of the incidents.
The effects of radiation exposure on workers and nearby residents around Sequoyah have not been studied so far. One possible explanation is the leak of radioactive isotopes, including tritium through system failures or the routine exchange of fuel rods, during which the reactor core is opened. After the Fukushima nuclear meltdowns, the U. Geological Survey found that the Sequoyah plant, positioned in a seismic zone, has the fourth-highest earthquake risk of all U. At Watts Bar, the risk is slightly lower, at 1 in 27, In addition, the dams above the Sequoyah plant would not withstand a massive flood of the Tennessee river, putting the nuclear plant and its emergency generators at risk.
The people in Tennessee do not want to become Hibakusha like the people in Fukushima. Construction of both Unit 1 and Unit 2 of the plant began in but was halted by TVA in due to safety concerns over the utilitys entire nuclear program. Construction of Unit 1 was completed in and the plant came online in that same year. This accomplishment was somewhat short-lived, as just over 5-months later, the plant went offline to undergo repairs to address a failed support beam on one of the plants condensers.
Both Unit 1 and Unit 2 of the plant are Westinghouse-manufactured pressurized water reactors PWR that have the ability to generate about 1, MW of electric power. The process of generating electricity at the Watts Bar plant begins with fission, or the splitting of uranium atoms, in the reactor core.
Fission in the reactor produces heat, which is used to heat water in a pressurized water reactor. From there, the hot water is piped from the reactor vessel to a steam generator, where the energy from the heated water is transferred to boil water and make steam in a second system.
0コメント