Research reactor Jülich 1

from Wikipedia, the free encyclopedia
Research reactor Jülich 1
Research reactor Jülich 1 (North Rhine-Westphalia)
Research reactor Jülich 1
Coordinates 50 ° 54 '17 "  N , 6 ° 24' 52"  E Coordinates: 50 ° 54 '17 "  N , 6 ° 24' 52"  E
country Germany
Data
operator research center Julich
start of building June 11, 1958
Installation February 23, 1962
Shutdown March 22, 1985
Shutdown November 23, 2007
Reactor type Swimming pool reactor
Thermal performance 10 MW
Neutron flux density 1.1 × 10 14  n / (cm 2 s)
was standing February 2, 2009

The Jülich 1 research reactor ( FRJ-1 , also known as the MERLIN research reactor ) was a nuclear reactor that was operated from 1962 to 1985 on the site of the Jülich Research Center (formerly the Jülich nuclear research facility ). With a nominal output of 10 megawatts (MW), it was one of the largest research reactors in Germany and was used as a neutron source exclusively for research purposes.

history

The foundation stone for the MERLIN research reactor (Medium Energy Research Light water moderated Industrial Nuclear reactor) was laid together with the DIDO research reactor on June 11, 1958, a good year after the research center was founded (at that time still the Society for the Promotion of Nuclear Research ) The reactor reached its first criticality on February 23, 1962, about three quarters of a year before its partner reactor. Its thermal output was initially 5 MW, later it was increased to 10 MW.

Due to restructuring measures, the reactor was shut down on March 22, 1985 after 23 years of operation. The fuel elements were then removed from the facility and shipped to the United States and Great Britain . The decommissioning of the reactor plant began on June 8, 1995. The reactor block was dismantled from 2000 to 2003, the clearance measurements took place between 2004 and 2007. On November 23, 2007, the plant was finally released from the scope of the German Atomic Energy Act . The remaining shell of the reactor building was dismantled between March and June 2008, and a green meadow was then created on the property . On September 8, 2008, at the end of the decommissioning work, an oak was symbolically planted in the middle of the area .

construction

The research reactor FRJ-1 was a material test reactor of the pool reactor type which was moderated and cooled with light water. The neutrons were Beryllium - reflectors bundled. The maximum thermal neutron flux was 1.1 × 10 14 n / cm 2 s. The reactor was mainly used for the irradiation of samples.

See also

swell

  1. Burkhard Stahn u. a .: Dismantling of the reactor block of the research reactor FRJ-1 (MERLIN)  ( page no longer available , search in web archivesInfo: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. , atw - International Journal of Nuclear Energy, June 2003@1@ 2Template: Toter Link / www.atomwirtschaft.de  
  2. List of nuclear facilities in the Federal Republic of Germany ( Memento from February 5, 2009 in the Internet Archive ), Federal Office for Radiation Protection, January 2009 (pdf, 97.5 kB)
  3. State Secretaries Rachel and Stückradt certify Jülich's "top-class specialist knowledge" and "sense of responsibility" - an oak tree planted at the former MERLIN reactor site , press release from Forschungszentrum Jülich on September 8, 2008
  4. Research Reactors in the World (RRDB) - research reactor database of IAEA