Integral and Separate Effects Test Facilities To Support Water Cooled Small Modular Reactors: A Review

Bhowmik, Palash K.; Pérez, Carlos; Fishler, Joshua D.; Prieto, Silvino A. Balderrama; Reichow, Isaac D.; Johnson, Justin T.; Sabharwall, Piyush; O’Brien, James E.

doi:10.1016/j.pnucene.2023.104697

Cited by 10 publications

(4 citation statements)

References 38 publications

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“…This includes risk assessment, technical safety, modeling, reaction hazards, and inherent safety. Overall, these studies are a suitable contribution to the field, addressing crucial aspects of thermal-hydraulic experimental facility development and safety system demonstration [28,29].…”

Section: Aspects Related To Industrial Processes and Case Studiesmentioning

confidence: 99%

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Sizing and Selection of Pressure Relief Valves for High-Pressure Thermal–Hydraulic Systems

Bhowmik,

Sabharwall

2023

Processes

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This study covers the critical concerns related to the sizing, selection, installation, maintenance, and testing of pressure safety valves (PSVs). The aim is to ensure the safety of pressurized systems, hydrostatic transmission systems, and hydraulic plants, including process plants, thermal power plants, and nuclear reactor systems. PSVs are devices that ensure the safety and reliability of pressurized vessels, lines, and systems during overpressure events. The task of selecting which PSV features are of greatest value for a specific purpose is complex—especially in the design of a high-pressure experimental thermal–hydraulic facility for hydrostatic and transient testing of the reactor system—when the systems are in the design and development phases and require qualification and demonstration to prove that they have reached a given level of technological readiness. The present study highlights the required steps for users to follow the associated rules, guidelines, and recommendations. As a part of this research, case studies are presented to help readers better understand the applicable strategy and standards. A discussion and a review of PSV performance degradation and failure are summarized to provide a better understanding of varied process applications and conditions, including fluid flow dynamics, boundary-layer formation and pressure drops, gas bubble formation and collapse, geometric configurations, inlet/outlet piping, abrupt pressure fluctuations, and acoustic resonance. Moreover, this study discusses the servicing and testing of PSVs in a multiphase pressurized system. Overall, it provides a basic overview of how PSVs ensure the safety of pressurized systems, supported by case studies and industrial practices.

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Section: Aspects Related To Industrial Processes and Case Studiesmentioning

confidence: 99%

“…Overall, these studies are a suitable contribution to the field, addressing crucial aspects of thermal-hydraulic experimental facility development and safety system demonstration [28,29].…”

Section: Psv In High-pressure Thermal-hydraulic Experimentsmentioning

confidence: 99%

Sizing and Selection of Pressure Relief Valves for High-Pressure Thermal–Hydraulic Systems

Bhowmik,

Sabharwall

2023

Processes

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“…Scaled-down test facility design requires scaling analysis while keeping data scalability from perspectives such as geometry, properties, and phenomena (e.g., event timing, order). The data obtained from the IETs and SETs are considered first category data [8]. Data obtained from the literature or data generated using the standard handbook are considered second category data [8].…”

Section: Introductionmentioning

confidence: 99%

“…The data obtained from the IETs and SETs are considered first category data [8]. Data obtained from the literature or data generated using the standard handbook are considered second category data [8].…”

Section: Introductionmentioning

confidence: 99%

Advances in Integral and Separate Effects Experiments for Water-Cooled Small Modular Reactors

Bhowmik,

Piyush,

Johnson

et al. 2023

20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-20)

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This paper focuses on the progress being made in water-cooled small modular reactor (SMR) advanced integral effects and separate effects experiments for reactor licensing. SMRs, considered modular in design, are mostly factory-built and then shipped to the reactor site. Of the several types of SMR designs available, water-cooled SMRs are likely to receive regulatory approval faster than others, as most of the technologies involved (e.g., the fuel and coolant technologies) are matured. However, the unique safety systems of SMRs, which depend on specific SMR design features, require integral and separate effects experiments to achieve reactor licensing. Thus, of the many SMR designs being proposed, only a few have successfully undergone licensing and reached the final development and demonstration stage. Many nuclear vendors and newcomer companies are investing millions of dollars to develop integral and separate effects testing facilities for preparing final safety analysis reports to include in licensing applications. Development and analysis of these experimental facilities is costly and takes about four to five years. The unique challenges involved can be reduced when stakeholders synergistically apply lessons learned, knowing the critical role played by advancements in experiments that support the licensing of SMR safety systems. Identification of knowledge/research gaps with the phenomena identification and ranking table (PIRT) and designing experimental facilities focusing on the phenomena of interest (POI) and figures of merit (FOMs) are pivotal to select the critical path to successful design demonstration and licensing application. KEYWORDSIntegral effects test (IET), separate effect test (SET), scaling, small modular reactor (SMR)

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Experimental investigation of non-condensable gas effects in a natural circulation system

Jeong,

Hwang,

Kim

et al. 2023

J Mech Sci Technol

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Integral and Separate Effects Test Facilities To Support Water Cooled Small Modular Reactors: A Review

Cited by 10 publications

References 38 publications

Sizing and Selection of Pressure Relief Valves for High-Pressure Thermal–Hydraulic Systems

Sizing and Selection of Pressure Relief Valves for High-Pressure Thermal–Hydraulic Systems

Advances in Integral and Separate Effects Experiments for Water-Cooled Small Modular Reactors

Experimental investigation of non-condensable gas effects in a natural circulation system

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