Lungmen ABWR containment analyses during short-term main steam line break LOCA using GOTHIC

Negative pressure difference evaluation of Lungmen ABWR containment by using GOTHIC

“…The short-term GOTHIC model is based on the authors' previous study (Chen et al, 2012), and the schematic is shown in Fig. 5.…”

“…Douglass et al (2009) used GOTHIC to perform short-term ABWR analyses of the South Texas Project units 3 and 4. The authors also have used GOTHIC to analyze the containment pressure responses of the Mark I (Chen et al, 2011), Mark III (Lin et al, 2013), and ABWR (Chen et al, 2012) plants. Furthermore, the multi-dimensional model of GOTHIC can be applied to investigate the pool or gas mixing in the containments.…”

Hydrogen distribution and Passive Autocatalytic Recombiner (PAR) mitigation in a PWR-KWU containment type

“…To decide which tools are more appropriate for this task, the technical reports from the OECD/NEA have provided an exhaustive overview on the main simulation tools for hydrogen risk problems (NEA, 1999(NEA, , 2015. The use of 3D containment codes has been widely extended for detailed containment mass and energy release simulations throughout the last years (Chen et al, 2011(Chen et al, , 2012Papini et al, 2011;Jimenez et al, 2015;Ozdemir et al, 2015a;Bocanegra et al, 2016;Xiao et al, 2016). In the named NEA reports, the use of a suite of tools such as a combination of a lumped parameter code, like MELCOR or MAAP, with a 3D containment code, like GOTHIC or GASFLOW, is highly recommended for hydro gen risk mitigation analysis.…”

A proposed methodology for passive autocatalytic recombiners sizing and location in LWR containments

“…: (a) schematics of the short-term model and (b) axial subdivision of the suppression chamber, (Chen et al, 2011) 42 1.8. Schematic of the GOTHIC model of the Lungmen ABWR containment: (a) the complete model with one drywell volume; (b) side view of the suppression chamber with the axial subdivision; and (c) top view of the suppression chamber, (Chen et al, 2012) 43 1.9. 3D view of containment model with ventilation ducts, (Grgic et al, 2012), (Grgic et al, 2014a) 44 1.10.…”

“…The analysis covers a Small Break LOCA (SBLOCA) without Emergency Cooling Injection (ECI) with a lumped containment model composed of 13 nodes and 40 links. (Chen et al, 2012) conducted an analysis of a short term Main Steam Line Break LOCA (MSLB) using a GOTHIC model of ABWR containment of the Lungmen NPP. The objective of the analysis was to evaluate the containment response in terms of pressure and temperature.…”