Piqua Nuclear Generating Station

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Decommissioned Reactors ( gross ):

The nuclear power plant Piqua (English Piqua Nuclear Power Facility or Piqua Nuclear Generating Station, abbreviation PNPF ) is at Piqua, Ohio in the United States on the banks of the Great Miami River about 55 kilometers (34 miles) north of Dayton.

Reactor

When reactor in Piqua is a Omre. He has a net output of 12 MWe, a gross output of 12 MWe and also a thermal output of 45.5 MW. It was an organic cooled and moderated reactor which was operated as a demonstration project 1963-1966 by the United States Atomic Energy Commission. The reactor was shut down due to problems with the coolant.

History

Construction of the reactor was on 1 January 1960. On 1 July 1963, the reactor was first synchronized with the power grid and took on November 1, 1963 commercial operation on. It was one of the first nuclear power plants with a municipal owners and operators around the world and the first in the United States. On January 1, 1966, the reactor was shut down. The plant was owned and operated by the United States Atomic Energy Commission and was under contract by the City of Piqua. In 1966, the Atomic Energy Commission terminated the contract with the City of Piqua for the operation and maintenance of the plant. Between 1967 and 1969, the nuclear power plant Piqua was shut down and dismantled. At this time, the reactor fuel and the coolant, most of radioactive materials were removed from the plant. The reactor pressure vessel and the space between the container and the cavity liner was then filled with dried quartz sand.

The only recent activity in the plant are the annual inspections and checks by the Environmental Management program (Environmental Management Program ). The environmental management activities in the system are planned until the end of the year 2018. It is expected that the plant will be handed over to the City of Piqua. The reactor pressure vessel and other radioactive parts of the reactor complex remain in place. Security measures have been taken to avert danger. The decommissioning activities were conducted by the staff of the city of Piqua. In February 1969, the city of Piqua had broken down the reactor and the building for use as office and storage facilities converted. The fuel and control rods and the radioactive and contaminated pipelines were brought to a national camp. The organic coolant was burned. Contaminated piping and equipment inside the reactor building have been removed or decontaminated, and the above-ground parts of the building became a warehouse. The reactor pressure vessel was filled with sand, and all penetrations in the reactor complex were clogged. The safety lock of the reactor building was filled and paved. The underground complex was then sealed with a waterproof barrier. So unauthorized access, or a radioactive leak was prevented. The reactor pressure vessel was sealed in the containment. The total radioactivity which was sealed at the facility, was 260,000 Curie. Analyzes have predicted that the radioactivity will have reached a dangerous level not in 120 years. There is currently no proven contamination outside the containment structure in the nuclear power plant. Reduced levels of activity products are scattered in the thermal protection device which surrounds the reactor vessel. At present, the results of the annual monitoring and maintenance activities, that there is no detectable release from the decommissioned facility into the environment.

The facility was leased to the city Piqua for use as offices and storage of equipment. In December 1991, an investigation of the facility was started to document their radiological condition. The data showed that the measured activity values ​​are substantially the same as those in the natural environment. The only exception was that a low level of radioactive contamination was discovered in a drain in 56.5 meters in height, but the radiation exposure in this area was also typical of the natural background. The nuclear power plant was acquired by the U.S. government and then leased to the City of Piqua.

There are only two technicians required to spend two days a year in the system.

Data of the reactor units

The nuclear power plant Piqua had a block:

472876
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