scholarly journals On the efficiency of variable frequency drives of the main circulating pumps of nuclear power plants with water-cooled (VVER) and fast neutron reactors (BN)

2018 ◽  
Vol 1111 ◽  
pp. 012028 ◽  
Author(s):  
V A Khrustalev ◽  
M V Garievskii ◽  
G B Lazarev
Keyword(s):  
Fast Neutron ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Variable Frequency ◽  
Variable Frequency Drives

Niobium Concentration Measurement in Steel Samples with TXRF

1990 ◽  
Vol 34 ◽  
pp. 239-241
Author(s):  
F. Hegedüs ◽  
P. Winkler
Keyword(s):  
Fast Neutron ◽  
Pressure Vessel ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Sampling Method ◽  
Matrix Effects ◽  
Neutron Fluence ◽  
Concentration Measurement

In nuclear power plants the fast neutron fluence on the pressure vessel (PV) inner wall is measured by the scraping sampling method (1). As the inner plating of the pressure vessel contains 0.5 - 0.6 % of niobium, 93mNb (tt/2 = 16a) isomer is produced by the reaction 93Nb (n, n’). The activity of 93mNb is related to the fast neutron fluence.Scraping samples (few hundred of mg) were taken from the PV inner wall. The niobium was chemically extracted from steel by using a HAP column. This extraction was needed to reduce matrix effects and to avoid interferences of other activities with 93mNb

Work structure in nuclear power plants

1983 ◽  
Author(s):  
Marjorie B. Bauman ◽  
Richard F. Pain ◽  
Harold P. Van Cott ◽  
Margery K. Davidson
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Work Structure
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