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Spent fuel underground

Spent nuclear fuel has fission products, uranium, and transuranic elements. Plans call for permanent disposal in underground repositories. Geological studies are in progress at the Yucca Mountain site in Nevada. Until a repository is completed, spent fuel must be stored in water pools or in dry storage casks at nuclear plant sites. [Pg.181]

Tuff, a compressed volcanic material, is the primary constituent of Yucca Mountain, near Las Vegas, Nevada, the site selected by Congress in 1987 for assessment for spent fuel disposal. An underground laboratory, to consist of many kilometers of tunnels and test rooms, is to be cut into the mountain with special boring equipment to determine if the site is suitable for a repository. [Pg.230]

Nuclear power produces spent fuel that contains radionuclides that will emit radiation for hundreds and thousands of years. At present, they are being stored underground indefinitely in heavy, shock-proof containers. These containers could be stolen or may corrode with time, or leak as a result of earthquakes and tremors. Transportation and reprocessing accidents could cause environmental contamination. One solution is for the United States to go to breeder reactors, as has been done in other countries, to reduce the level and amount of radioactive waste. [Pg.386]

CLAB underground spent fuel disposal facility, 17 549 Cladinose, 4 713 Claflin refiner, 15 105 CLAIMS-Citation database, 15 238 CLAIMS-Citation files, 15 247, 248 CLAIMS Compound Registry, 15 247 CLAIMS databases, 15 237, 247 Claisen condensation, 10 505 Claisen-Cope rearrangement, 24 479,... [Pg.187]

More than 6 billion has been spent on high-level waste disposal. Spent fuel can be deadly for tens of thousands of years. In order to isolate it from the environment, nuclear waste is to be buried deep underground. Nevada s Yucca Mountain has been under consideration for decades and many in the nuclear industry believe that the Clinton administration blocked action on this site to gain support in this area. [Pg.221]

Another underground disposal site project is in Finland at the Olkiluoto Nuclear Power Plant. The proposed waste site will store spent fuel rods in iron canisters sealed in copper shells to resist corrosion. The canisters will be placed in holes surrounded by clay far below ground. The project is slated for completion in 2020. [Pg.65]

Finland has a determined and advanced spent fuel disposal program, which was started more than 20 years ago. A general authorisation, including designation of the disposal site, has been made by the Government and endorsed by the Parliament. In mid-2004, construction of an underground rock characterisation facility, which is intended to constitute a part of the repository, was commenced. The construction licence application for the encapsulation and disposal facility will be submitted in 2012 and the operating licence around 2020. [Pg.39]

Spent fuel is stored in shielded basins of water or dry vaults. As the radioactive decay drops to safe levels, it may take hundreds to thousands of years. The nuclear waste containers are designed for an underground storage period of at least 10,000 years. [Pg.235]

Most reactor waste is still in "temporary" storage. Various suggestions have been made for a more permanent solution, such as casting the spent fuel into glass bricks to contain it and then storing the bricks in corrosion-proof metal containers deep underground. [Pg.686]

Nuclear Waste Disposal. Nuclear waste comes from used fuel rods in nuclear power plants. Though the degree of radiation from these spent fuel rods is low, long-term exposure to low-level radiation is hazardous to human health. Disposal of these wastes has few options. The basic approach is to store them in places far from human habitat. Furthermore, it must be assured that the storage containers will not leak to the environment in any way. Leakage to underground water would be disastrous... [Pg.9]

The PRISM reactor is positioned underground in a concrete silo—a fourth containment boundary (Figure 6.3). In the unlikely event of a containment breach, the sodium complies with the natural law of gravity and is contained in the silo. The silo is sized to retain all of the primary sodium while keeping the core, stored spent fuel, and heat exchanger inlets covered with sodium. [Pg.235]

The design itself lends to a twin-pack plant configuration that has a 40-acre footprint, low profile architecture, and underground containment and an underground spent fuel pool—as shown in Figure 8.2. [Pg.294]

Current planning considers that the operational wet storage will be followed by interim wet storage in a 16 m deep pool at LAPEP at the Centro Atomico Ezeiza, currently under construction. As regards the spent fuel currently stored at the facility with underground tubes, they will be sent to the storage pool at LAPEP. [Pg.47]

Due to the low nominal power and short operation cycles, the research reactors RA-1 (40 kW) at Centro Atomico Constituyentes in Buenos Aires and RA-6 (500 kW) at Centro Atomico Bariloche in San Carlos de Bariloche do not generate spent fuel. Nevertheless, both installations have a facility to store all the fuel of the reactor core. In RA-1 the irradiated fuel is dry stored in 24 underground concrete tubes located inside the reactor building, and in RA-6 a separate decay pool, physically independent of the reactor pool but located inside the reactor building, is used for wet storage of the fuel assemblies. Figure 2 shows the decay pool of RA-6. [Pg.86]

The 1314-N LWLS is a transfer station consisting of numerous valves, pumps, underground and overhead piping and couplings, and underground tanks at the north end of the 100-N Area, approximately 90 m (300 ft) from the Columbia River. The unit received liquid radioactive waste from the 116-N-2 radioactive chemical waste treatment and storage facility and the 107-N spent fuel basin recirculation facility. The waste was transferred into railway tank cars and transported to the 200 Area for processing and disposal. [Pg.123]

The most common form of nuclear waste is spent fuel rods from nuclear power plants. These fuel rods can be contained above the ground by placing them in water pools or in dry casks. Each nuclear reactor in the United States has large pools of water where spent rods can be stored, and some of the radioactive materials will decay. When these pools are full, the rods are moved to dry casks, which are usually made of concrete and steel. Both storage pools and casks are meant for only temporary storage before moving the waste to permanent underground facilities. [Pg.656]

LONG-TERM SAFE STORAGE OF SPENT NUCLEAR FUEL FROM SHIP POWER UNITS IN UNDERGROUND STORAGE FACILITY IN THE NORTHWEST REGION OF RUSSIA... [Pg.271]


See other pages where Spent fuel underground is mentioned: [Pg.230]    [Pg.242]    [Pg.383]    [Pg.216]    [Pg.508]    [Pg.529]    [Pg.718]    [Pg.15]    [Pg.104]    [Pg.209]    [Pg.624]    [Pg.1029]    [Pg.1029]    [Pg.601]    [Pg.639]    [Pg.648]    [Pg.718]    [Pg.418]    [Pg.12]    [Pg.376]    [Pg.378]    [Pg.878]    [Pg.97]    [Pg.211]    [Pg.878]    [Pg.124]    [Pg.101]    [Pg.128]    [Pg.648]    [Pg.271]   
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