Aspects regarding the steam generator tube plugging at the support plate entrance using a high speed mechanical deformation procedure

2017 ◽  
Author(s):  
Tiberiu Gyongyosi ◽  
Dumitru Puiu ◽  
Bogdan Corbescu ◽  
Gheorghe Deloreanu ◽  
Ilie Prisecaru
Keyword(s):  
Steam Generator ◽  
High Speed ◽  
Mechanical Deformation ◽  
Steam Generator Tube ◽  
Support Plate ◽  
Tube Plugging ◽  
Deformation Procedure

Chemistry and Electrochemistry of Steam Generator Tube/Support Plate Crevices

1998 ◽  
Vol 289-292 ◽  
pp. 895-914
Author(s):  
Daniel Macdonald ◽  
G. Engelghardt ◽  
I. Balachov ◽  
J. Abellà ◽  
Pierre Millet
Keyword(s):  
Steam Generator ◽  
Steam Generator Tube ◽  
Support Plate

An Experimental Model Study of Steam Generator Tube Loading During a Sudden Depressurization

2016 ◽  
Vol 138 (4) ◽  
Author(s):  
Ouajih Hamouda ◽  
David S. Weaver ◽  
Jovica Riznic
Keyword(s):  
Experimental Model ◽  
Steam Generator ◽  
High Speed ◽  
Nuclear Power ◽  
Tube Bundle ◽  
Cross Flow ◽  
Working Fluid ◽  
Two Phase ◽  
Steam Generator Tube ◽  
Model Study

This paper presents the results of an experimental model study of the transient loading of steam generator tubes during a postulated main steam line break (MSLB) accident in a nuclear power plant. The problem involves complex transient two-phase flow dynamics and fluid-structural loading processes. A better understanding of this phenomenon will permit the development of improved design tools to ensure steam generator tube integrity. The pressure and temperature were measured upstream and downstream of a sectional model of a tube bundle in cross-flow, and the transient tube loads were directly measured using dynamic piezoelectric load cells. High-speed videos were taken to observe and better understand the flow phenomena causing the tube loading. The working fluid was R-134a and the tube bundle was a normal triangular array with a pitch ratio of 1.36. The flow through the bundle was choked for the majority of the transient. The transient tube loading is explained in terms of the associated fluid mechanics. An empirical model is developed that enables the prediction of the maximum tube loads once the pressure drop is known.

scholarly journals The Fouling Behavior of Steam Generator Tube at Different Positions in the High-Temperature Water

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 684
Author(s):  
Tong Zhang ◽  
Guihui Qiu ◽  
Hongying Yu ◽  
Peng Zhou ◽  
Shicheng Wang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Steam Generator ◽  
Outer Layer ◽  
Layer Structure ◽  
Steam Generator Tube ◽  
Support Plate ◽  
High Temperature Water ◽  
Triple Layer ◽  
Temperature Water

The fouling behavior of a steam generator (SG) tube was investigated at different positions after 500 h of immersion in high-temperature water. A triple-layer structure of fouling appeared at both the crevice position and the free span position, namely, the large, dispersedly distributed deposition layer on the top; the small and faceted outer layer; and the relatively continuous inner layer. There was no obvious positional effect on the thickness of the inner layer. However, in the crevice position, the density of the deposited particle and the thickness of the outer layer was much higher than those of the free span position. The tube support plate (TSP) made of 410 stainless steel contributed significantly to the fouling behavior of the SG tube in the crevice between the SG tube and the TSP.

Restrained Bending Effect by the Support Plate on the Steam Generator Tube with Circumferential Cracks

2007 ◽  
Vol 31 (2) ◽  
pp. 277-284
Author(s):  
Hyun-Su Kim ◽  
Tae-Eun Jin ◽  
Hong-Deok Kim ◽  
Han-Sub Chung ◽  
Yoon-Suk Chang ◽  
...  
Keyword(s):  
Steam Generator ◽  
Steam Generator Tube ◽  
Support Plate ◽  
Bending Effect
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