Improving the Computational Analysis of Stress-Strain State and Fracture Resistance of Welded Joints Between Coolant Headers and PGV-1000M Steam Generator Vessel of Nuclear Power Station

2017 ◽  
Vol 49 (3) ◽  
pp. 349-360 ◽  
Author(s):  
V. V. Kharchenko ◽  
A. Yu. Chirkov ◽  
S. V. Kobel’skii ◽  
V. I. Kravchenko
Keyword(s):  
Nuclear Power Station ◽  
Steam Generator ◽  
Welded Joints ◽  
Fracture Resistance ◽  
Nuclear Power ◽  
Strain State ◽  
Computational Analysis ◽  
Power Station ◽  
Stress Strain ◽  
Stress Strain State

Effect of the layout of small-and large-series WWER-1000 reactors of nuclear power plants on the stress-strain state of the header-steam generator connector weldment

2007 ◽  
Vol 39 (5) ◽  
pp. 539-544 ◽  
Author(s):  
G. V. Stepanov ◽  
V. V. Kharchenko ◽  
A. I. Babutskii ◽  
S. V. Kobel’skii ◽  
I. V. Orynyak ◽  
...  
Keyword(s):  
Steam Generator ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Strain State ◽  
Large Series ◽  
Stress Strain ◽  
Stress Strain State

Development of a Methodology for Model Testing of Utor Welded Joints of a Vertical Cylindrical Tank

2021 ◽  
pp. 21-27
Author(s):  
D.A. Neganov ◽  
◽  
A.E. Zorin ◽  
O.I. Kolesnikov ◽  
G.V. Nesterov ◽  
...  
Keyword(s):  
Welded Joints ◽  
Strain State ◽  
Welded Joint ◽  
Design Parameters ◽  
Cylindrical Tank ◽  
Stress Strain ◽  
The Real ◽  
Stress Strain State ◽  
Hydraulic Machines ◽  
Wide Range

The methodology of laboratory modeling of the loading of utor welded joint of the tank is presented. The methodology is based on testing of the special design sample. It allows under uniaxial tension on the typical servo-hydraulic machines to reproduce in the zone of a utor welded joint the combined action of bending and shear forces, similar to that which occurs during the operation of a vertical cylindrical tank. To assess the distribution of the stress-strain state in the proposed design of the sample under its loading, the finite element modeling was performed in the ANSYS software package. It showed the fundamental correspondence of the stress distribution in the zone of the utor node in the sample and in the real tank. The experimental studies consisted in carrying out tests for the durability of a series of 16 samples loaded with the maximum force in the cycle, causing the calculated stresses in the zone of the welded utor node in the range of 100–200 % from the maximum permissible ones. The obtained results showed that the maximum loaded zone, where the destruction of the samples occurred, is the near-seam zone of the utor welded joint on the inside of the tank. This corresponds to the statistics of the real tank failures. It is established that the developed methodology ensures the possibility of carrying out correct resource tests of the tank utor welded joints. It is also possible to vary the stress-strain state scheme within a wide range in the area of the utor welded joint by changing the design parameters of the test sample. In compliance with the regulated welding technologies and the absence of unacceptable defects in the welded joint, the utor node has a high resource, which significantly exceeding 50 years of the tank operation.

FeedWater System Transient Analysis of Nuclear Power Station

2011 ◽  
Vol 347-353 ◽  
pp. 1557-1560 ◽  
Author(s):  
Shao Bo Zhang ◽  
Bi Xiong Luo ◽  
Xu Bin Qiao ◽  
Juan Chen ◽  
Xiao Dong Wang
Keyword(s):  
Nuclear Power Station ◽  
Steam Generator ◽  
Nuclear Power ◽  
Transient Analysis ◽  
Hydraulic Calculation ◽  
Security Assessment ◽  
Power Station ◽  
Safety Requirements ◽  
Safety Systems

Nuclear power station has high safety requirements, and the safety systems related to the nuclear island must be checked by hydraulic calculation. In the conventional island, the safe shutdown of the nuclear island most closely relates to the feedwater system, which determines the quantity and quality of the feedwater supply to the steam generator. In this paper, feedwater evolution in case of steamline break will be presented by using Flowmaster hydraulic software, and the results was used as the input for the analysis of security assessment in the nuclear island.

Effect of Sludge on the Stress–Strain State of Heat-Exchange Tubes of a Steam Generator

2019 ◽  
Vol 55 (1) ◽  
pp. 86-94 ◽  
Author(s):  
P. Z. Lugovoi ◽  
A. P. Shugailo ◽  
Ya. D. Kruglyi ◽  
A. M. Kolupaev
Keyword(s):  
Heat Exchange ◽  
Steam Generator ◽  
Strain State ◽  
Stress Strain ◽  
Stress Strain State

Stress-strain state of compensated and non-compensated welded joints

1999 ◽  
Vol 13 (6) ◽  
pp. 478-481
Author(s):  
R A Musin ◽  
Ya V Lyamin
Keyword(s):  
Welded Joints ◽  
Strain State ◽  
Stress Strain ◽  
Stress Strain State
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