scholarly journals Effectiveness of Flooding Heat Transfer by Emergency Core Cooling Systems for Boiling Water Reactor

1973 ◽  
Vol 15 (6) ◽  
pp. 421-427 ◽  
Author(s):  
Hideo OGASAWARA ◽  
Shinichi KASHIWAI ◽  
Masanori NAITO ◽  
Yoshie TAKASHIMA
Keyword(s):  
Heat Transfer ◽  
Boiling Water ◽  
Boiling Water Reactor ◽  
Cooling Systems ◽  
Water Reactor ◽  
Core Cooling

Recapturing Net Positive Suction Head Margins in Boiling Water Reactor Emergency Core Cooling Systems

2017 ◽  
Author(s):  
Alan J. Bilanin ◽  
Andrew E. Kaufman ◽  
Warren J. Bilanin
Keyword(s):  
Cooling System ◽  
Cooling Water ◽  
Boiling Water ◽  
Boiling Water Reactor ◽  
Cooling Systems ◽  
Water Reactor ◽  
Loss Of Coolant Accident ◽  
Loss Of Coolant ◽  
Core Cooling ◽  
Reactor Pressure

Boiling Water Reactor pressure suppression pools have stringent housekeeping requirements, as well as restrictions on amounts and types of insulation and debris that can be present in the containment, to guarantee that suction strainers that allow cooling water to be supplied to the reactor during a Loss of Coolant Accident remain operational. By introducing “good debris” into the cooling water, many of these requirements/restrictions can be relaxed without sacrificing operational readiness of the cooling system.

Characterization of Oxide Films on Stainless Steel Surfaces of Boiling Water Reactor Primary Cooling Systems

1987 ◽  
Vol 95 (4) ◽  
pp. 257-265 ◽  
Author(s):  
Kazumi Asahi ◽  
Masao Kitamura ◽  
Eishi Ibe ◽  
Yamato Asakura ◽  
Shunsuke Uchida
Keyword(s):  
Stainless Steel ◽  
Oxide Films ◽  
Boiling Water ◽  
Boiling Water Reactor ◽  
Cooling Systems ◽  
Water Reactor ◽  
Steel Surfaces

Application of Preoxidation Treatment to Suppress60Co Deposition on Stainless Steel Surfaces of Boiling Water Reactor Primary Cooling Systems

1985 ◽  
Vol 89 (1) ◽  
pp. 61-69 ◽  
Author(s):  
Masao Kitamura ◽  
Eishi Ibe ◽  
Shunsuke Uchida ◽  
Takashi Honda ◽  
Glauco Romeo ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Boiling Water ◽  
Boiling Water Reactor ◽  
Cooling Systems ◽  
Water Reactor ◽  
Steel Surfaces

scholarly journals The Effective Convectivity Model for Simulation of Molten Metal Layer Heat Transfer in a Boiling Water Reactor Lower Head

2013 ◽  
Vol 2013 ◽  
pp. 1-14 ◽  
Author(s):  
Chi-Thanh Tran ◽  
Pavel Kudinov
Keyword(s):  
Heat Transfer ◽  
Molten Metal ◽  
Metal Layer ◽  
Boiling Water ◽  
Severe Accident ◽  
Boiling Water Reactor ◽  
Guide Tube ◽  
Water Reactor ◽  
Focusing Effect ◽  
Hypothetical Scenario

This paper is concerned with the development of approaches for assessment of core debris heat transfer and Control Rod Guide Tube (CRGT) cooling effectiveness in case of a Boiling Water Reactor (BWR) severe accident. We consider a hypothetical scenario with stratified (metal layer atop) melt pool in the lower plenum. Effective Convectivity Model (ECM) and Phase-Change ECM (PECM) are developed for the modeling of molten metal layer heat transfer. The PECM model takes into account reduced convection heat transfer in mushy zone and compositional convection that enables simulations of noneutectic binary mixture solidification and melting. The ECM and PECM are (i) validated against relevant experiments for both eutectic and noneutectic mixtures and (ii) benchmarked against CFD-generated data including the local heat transfer characteristics. The PECM is then applied to the analysis of heat transfer in a stratified heterogeneous debris pool taking into account CRGT cooling. The PECM simulation results show apparent efficacy of the CRGT cooling which can be utilized as Severe Accident Management (SAM) measure to protect the vessel wall from focusing effect caused by metallic layer.

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