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At least 883 records · Page 49

Availability of Neutronics Benchmarks in the ICSBEP and IRPhEP Handbooks for Computational Tools Testing

In the past several decades, numerous experiments have been performed worldwide to support reactor operations, measurements, design, and nuclear safety. Those experiments represent an extensive international investment in infrastructure, expertise, and cost, representing significantly valuable resources of data supporting past, current, and future research activities. Those valuable assets represent the basis for recording, development, and validation of our nuclear methods and integral nuclear data [1]. The loss of these experimental data, which has occurred all too much in the recent years, is tragic. The high cost to repeat many of these measurements can be prohibitive, if not impossible, to surmount. Two international projects were developed, and are under the direction of the Organisation for Co-operation and Development Nuclear Energy Agency (OECD NEA) to address the challenges of not just data preservation, but evaluation of the data to determine its merit for modern and future use. The International Criticality Safety Benchmark Evaluation Project (ICSBEP) was established to identify and verify comprehensive critical benchmark data sets; evaluate the data, including quantification of biases and uncertainties; compile the data and calculations in a standardized format; and formally document the effort into a single source of verified benchmark data [2]. Similarly, the International Reactor Physics Experiment Evaluation Project (IRPhEP) was established to preserve integral reactor physics experimental data, including separate or special effects data for nuclear energy and technology applications [3]. Annually, contributors from around the world continue to collaborate in the evaluation and review of select benchmark experiments for preservation and dissemination. The extensively peer-reviewed integral benchmark data can then be utilized to support nuclear design and safety analysts to validate the analytical tools, methods, and data needed for next-generation reactor design, safety analysis requirements, and all other front- and back-end activities contributing to the overall nuclear fuel cycle where quality neutronics calculations are paramount.

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS↗

chapter 40 - Gasification Technologies, "Handbook of Climate Change Mitigation and Adaptation"

Gasification is an enabling technology for the clean-up of fossil and biomass fuels for energy production. A history of gasifier development is told from the perspective of a technology evolving to meet the ever changing market needs. The chemistry and physics of coal conversion includes pyrolysis, combustion, gasification, mineral transformations as well as a discussion of the materials developed to meet the most challenging gasifier applications. Integrated gasification and combined cycle processes are discussed with respect to electrical power production. The distinguishing features for different types of gasifiers are described including fixed bed, fluidized bed, entrained flow, transport gasifiers. The twelve major gasifiers being marketed today are described. The hydrodynamics and kinetics of each are reviewed along with salient differences in performance, such as gas composition, when using a variety of fuels under different conditions. Critical operational features that are discussed include oxidizing media, air or oxygen blown; the system pressure; fuel feed stock; and downstream clean-up. Thermal integration is discussed with respect to its impact on the gasifier performance. Gas clean-up is also considered with respect to the removal of potential pollutants and the shifting to environmentally benign transportation and process fuels.

01 COAL, LIGNITE, AND PEAT↗

Federal New Buildings Handbook for Net Zero Energy, Water, and Waste

In 2015, the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy (EERE) defined zero energy buildings as "an energy-efficient building where, on a source energy basis, the actual annual delivered energy is less than or equal to the on-site renewable exported energy." This document is focused on applying EERE’s definition of zero energy buildings to federal sector new buildings. However, it is not intended to replace, substitute, or modify any statutory or regulatory requirements and mandates.

federal new buildings↗

Handbook of Marine Hydrokinetic Regulatory Processes

As part of Office’s efforts to advance marine energy technologies and address key issues to innovation, the Office aggregates and disseminates information on permitting and licensing processes used in siting projects.

water, power, blue economy, marine, renewable, reg↗