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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 667 records · Page 37

IDC Re-Engineering Phase 2 Data Model to IDC Schema Mapping.

This initial draft document contains formative data model content for select areas of Re-Engineering Phase 2 IDC System. The purpose of this document is to facilitate discussion among the stakeholders. It is not intended as a definitive proposal.

96 KNOWLEDGE MANAGEMENT AND PRESERVATION↗

IDC Re-Engineering Phase 2 Glossary.

This document contains the glossary of terms used for the IDC Re-Engineering Phase 2 project. This version was created for Iteration E1.

42 ENGINEERING↗

IDC Re-Engineering Phase 2 System Specification Document Version 1.5

This document contains the system specifications derived to satisfy the system requirements found in the IDC System Requirements Document for the IDC Re-Engineering Phase 2 project. This System Specification Document (SSD) defines waveform data processing requirements for the International Data Centre (IDC) of the Comprehensive Nuclear Test Ban Treaty Organization (CTBTO). The routine processing includes characterization of events with the objective of screening out events considered to be consistent with natural phenomena or non-nuclear, man-made phenomena. This document does not address requirements concerning acquisition, processing and analysis of radionuclide data but does include requirements for the dissemination of radionuclide data and products.

97 MATHEMATICS AND COMPUTING↗

IDC Re-Engineering Phase 2 Glossary Version 1.3

This document contains the glossary of terms used for the IDC Re-Engineering Phase 2 project. This version was created for Iteration E3. The IDC applies automatic processing methods in order to produce, archive, and distribute standard IDC products on behalf of all States Parties.

96 KNOWLEDGE MANAGEMENT AND PRESERVATION↗

IDC Re-Engineering Phase 3 Development Plan.

Sandia National Laboratories has prepared a project development plan that proposes how the parties interested in the IDC Re-Engineering system will coordinate its development, testing and transition to operations.

98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL P↗

Advanced Technology and Mitigation (ATDM) SPARC Re-Entry Code Fiscal Year 2017 Progress and Accomplishments for ECP.

The SPARC (Sandia Parallel Aerodynamics and Reentry Code) will provide nuclear weapon qualification evidence for the random vibration and thermal environments created by re-entry of a warhead into the earth’s atmosphere. SPARC incorporates the innovative approaches of ATDM projects on several fronts including: effective harnessing of heterogeneous compute nodes using Kokkos, exascale-ready parallel scalability through asynchronous multi-tasking, uncertainty quantification through Sacado integration, implementation of state-of-the-art reentry physics and multiscale models, use of advanced verification and validation methods, and enabling of improved workflows for users. SPARC is being developed primarily for the Department of Energy nuclear weapon program, with additional development and use of the code is being supported by the Department of Defense for conventional weapons programs.

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEF↗

Re-visiting RHIC snakes: OPERA fields, n 0 dance

In this Tech. Note RHIC snakes and stable spin direction $\vector{n}$ 0 (s) are re-visited, based on OPERA-computed field maps of the former. The numerical simulations so undertaken provide various outcomes regarding RHIC optics and spin dynamics, in relation with orbital and focusing effects resulting from the use of this realistic 3-D representation of the snakes.

43 PARTICLE ACCELERATORS↗

Re-Branding the Nuclear Fuel Cycle

One of the key challenges for the future expansion of nuclear power in the US is the current lack of a strategy for the long-term management of our commercially-used nuclear fuel. For nuclear energy to continue being a substantial contributor to the U.S. energy mix, the nuclear industry needs to develop and demonstrate a viable option for the nuclear fuel cycle that enables the safe, secure, economic, and sustainable expansion of nuclear energy while minimizing proliferation and terrorism risks. Given the political challenges facing the nuclear fuel cycle, it is crucial that sound technical and technological solutions be developed to secure the understanding and the support of the relevant stakeholders for these solutions. This project aimed to design a successful strategy to re-brand the nuclear fuel cycle into a familiar and lowrisk concept whose contribution to people’s everyday life is perceived as positive.

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS↗

IDC Re-Engineering Phase 3 Budgetary Cost Estimate Summary (Leveraged NDC Case)

Sandia National Laboratories has prepared a budgetary cost estimate for planning for the IDC Re-engineering Phase 3 effort, based on leveraging a fully funded, Sandia executed NDC Modernization project. This report provides the budgetary cost estimate and describes the methodology, assumptions, and cost model details used to create the budgetary cost estimate.

29 ENERGY PLANNING, POLICY, AND ECONOMY↗

Corrosion Evaluation for Tank 241-AP-106 Re-purposing

Tank AP-106 will be an integral part of the Direct Feed Low Activity Waste (DF-LAW) activity. This tank is an underground, carbon steel, double shell tank (DST). Before it can be utilized, the Cs-137 concentration levels in the waste must be reduced significantly. The AP-106 re-purposing process will manage normal waste tank additions procedures such that waste acceptance criteria objectives for Cs-137 removal are achieved. As this process was being developed, concerns regarding tank integrity during and after the process to Tank AP-106 and associated tanks (i.e., AP-102, AN-101, and AP-108) were addressed. The degradation mechanisms identified include: general and pitting corrosion, caustic stress corrosion cracking, galvanic corrosion, and microbiologically induced corrosion (MIC). Recommendations were provided to minimize the exposure of the tank to corrosive conditions (see Section 6.0). These recommendations included chemistry adjustments at defined steps in the process that will maintain the waste in compliance with the corrosion control program. Additionally, sampling and inspection (see Sections 6.0 and 7.0, respectively) recommendations that will assess the final condition of the tank environment and the tank were presented. The greatest risk for this process involves the handling of large quantities of Columbia River water (i.e., greater than 450,000 gallons) within the AP-106, associated tanks and supporting infrastructure (i.e., transfer line piping). As long as this water is blended into the supernate in a timely fashion, and the waste is adjusted appropriately with corrosion inhibitors, the final condition is expected to be within compliance. Recommendations were also made to address process interruptions that could result in exposure of the tank walls to aggressive conditions.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗

IDC Re-Engineering Phase 2 Glossary

This document contains the glossary of terms used for the IDC Re-Engineering Phase 2 project. This version was created for Iteration E2.

97 MATHEMATICS AND COMPUTING↗

Supporting Risk-Based Decision-Making to Minimize Facility-Associated Re-Introduction of Poliovirus: Phase I

Sandia National Laboratories and Gryphon Scientific, as supported and directed by the CDC Center for Preparedness and Response (CPR), studied the process of risk assessment and risk-based decision-making in facilities expected to continue possessing poliovirus strains. The first phase of the study was conducted in anticipation of developing a tool to support decision-making processes for poliovirus containment to minimize the risk of facility-associated re-introduction of poliovirus. The study results supported the starting assumption that risk management of poliovirus will be aided by more rigorous and consistent risk assessment and that experience-based risk assessment is, by itself, inadequate to understand risk in a post-eradication world. These results were derived from review of polio virus literature, oversight documents, current and expected practices, and from discussions with affected facilities. Based on these results and on additional discussions with facilities, the study team recommends development of a quantitative risk assessment tool as well as improving access to and the quality of data for informing risk-based decision-making.

59 BASIC BIOLOGICAL SCIENCES↗