AVR nuclear test power plant. 2. Half-year report 1989 (01.07.1989 - 31.12.1989)

Automatic translation: In the 2nd half of 1989 the power plant was not in power operation drove. Until mid-1989 the essentials were still mandatory regular checks carried out. Following it took place the assembly of the test facility to examine the dust discharge with pressure relief (HTA-6). She was in the 4th of August Week completed. To carry out the periodic inspections that are still outstanding in the field of reactor physics, the two reactor vessels topped up to 6 bar after the HTA-6 test device was removed. At the same time, the secondary circuit and the cooling gas fan were put into operation to create a homogeneous temperature profile taken. It came about through an error in the neutron flux instrumentation when the reactor went critically on 08/25/1989 to a scram trigger. After eliminating the cause of the fault - defective preamplifier - the physical measurements were taken on August 30th / 31st, 1989 carried out at a reactor temperature of 90 ° C and 120 ° C. To the Checking the reactivity and functionality of the The reactor will be used for neutron flux measuring devices drove critically every Wednesday.