Development of a Computer Code, ONCESG, for the Thermal-Hydraulic Design of a Once-Through Steam Generator

2000 ◽  
Vol 37 (5) ◽  
pp. 445-454 ◽  
Author(s):  
Juhyeon YOON ◽  
Joo-Pyung KIM ◽  
Hwan-Yeol KIM ◽  
Doo Jeong LEE ◽  
Moon Hee CHANG
Author(s):  
Namhyeong Kim ◽  
Hyungmo Kim ◽  
Jaehyuk Eoh ◽  
Moo Hwan Kim ◽  
HangJin Jo

Author(s):  
Jun Huang ◽  
Junli Gou ◽  
Haifu Ma ◽  
Jie Fan ◽  
Jianqiang Shan

Due to their advantages, such as compactness and high efficiency in heat transfer, helically coiled heat exchangers have been widely used by different type of nuclear power plants, especially by small and medium size reactors (SMRs). In order to analyze the thermal-hydraulic characteristics of a helical coiled once through steam generator (OTSG) for a small integral pressurized water reactor, a computer code is developed in this paper. The code is based on two-fluid model. The constitutive correlations are recommended based on the assessments with the compiled databases from the reviewed literatures. NUSOL SG is validated and verified against heat transfer in helical coiled tubes, and the calculation results agree well with the experiment data. The present study could provide references for the investigators to perform further investigations on the thermal hydraulic characteristics of helical coiled OTSGs.


2016 ◽  
Vol 90 ◽  
pp. 256-263 ◽  
Author(s):  
Peiwei Sun ◽  
Zi Wang ◽  
Jianmin Zhang ◽  
Guanghui Su

Author(s):  
G. Vaidyanathan ◽  
A.L. Kothandaraman ◽  
L.S. Siva Kumar ◽  
V. Vinod ◽  
I.B. Noushad ◽  
...  

Author(s):  
Martin Hornacek ◽  
Vladimir Necas ◽  
Peter Bezak

The paper is focused on the decommissioning process from the point of view of steam generator dismantling. A brief description of the steam generator (used in nuclear power plants with VVER 440 type reactor) and used computer code VISIPLAN 3D ALARA are given. The main part deals with the created model and dismantling strategy together with variable input parameters — decay time and decontamination. The obtained results — external exposure of workers and the influence of time and pre-dismantling decontamination — are studied. Also detailed analyses of every dismantling step considered are presented.


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