Publications

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Interconnect Working Group

Hemmert, Karl S.; Bair, Ray; Bhatele, Abhinav; Groves, Taylor; Hammond, Simon D.; Levenhagen, Michael J.; Mubarak, Misbah; Pakin, Scott; Ross, Rob; Wilke, Jeremiah J.; Georgakoudis, Giorgis

Abstract not provided.

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TYPE Conference Poster YEAR 2018
OSTI

Examining Efficacy of Strategic Stability in South Asia: An Analysis

Sahgal, Brig A.

This paper highlights how, in the backdrop of prevalent tensions between India and Pakistan, deterrence stability is endangered even when overall strategic stability prevails. Unresolved legacy issues including an outstanding boundary dispute, conflict over Kashmir, and terrorism mar India-Pakistan relations. Variables undermining the prospects for long term peace, among others, include growing mutual mistrust, the proxy war that India believes is state perpetrated, increasing conventional asymmetry, rapid advancement in weapon technologies, growing size of nuclear arsenals, doctrinal mismatch and above all, bilateral gridlock in confidence building measures and arms control measures.

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TYPE SAND Report YEAR 2018
DOIOSTI

Discharge Permit DP-1845 Quarterly Report (July — September 2018)

Li, Jun

Discharge Permit (DP)-1845 was issued by the New Mexico Environment (NMED) Ground Water Quality Bureau (GWQB) for discharges via up to three injection wells in a phased Treatability Study of in-situ bioremediation of groundwater at the Sandia National Laboratories, New Mexico, Technical Area-V Groundwater Area of Concern. This report fulfills the quarterly reporting requirements set forth in DP-1845, Section IV.B, Monitoring and Reporting. This reporting period is July 1 through September 30, 2018. The report is due to NMED GWQB by February 1, 2019.

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TYPE Other Report YEAR 2018
DOIOSTI

Environmental Restoration Operations Consolidated Quarterly Report (July — September 2018)

Cochran, John R.

This Sandia National Laboratories, New Mexico Environmental Restoration Operations (ER) Consolidated Quarterly Report (ER Quarterly Report) fulfills all quarterly reporting requirements set forth in the Compliance Order on Consent. Table I-1 lists the six sites remaining in the corrective action process. This edition of the ER Quarterly Report does not include Section II "Perchlorate Screening Quarterly Groundwater Monitoring Report" because no groundwater samples were analyzed for perchlorate during this reporting period. Additionally, Section III is not included in this edition of the ER Quarterly Report because there is no detailed Technical Area-V Groundwater information to present.

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TYPE Other Report YEAR 2018
DOIOSTI

NSRD-16: Computational Capability to Substantiate DOE-HDBk-3010 Data

Foulk, James W.; Bignell, John; San LeSan; Dingreville, Remi; Gilkey, Lindsay N.; Gordon, Natalie; Fascitelli, Dominic G.

Safety basis analysts throughout the U.S. Department of Energy (DOE) complex rely heavily on the information provided in the DOE Handbook, DOE-HDBK-3010, Airborne Release Fractions/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, to determine radionuclide source terms from postulated accident scenarios. In calculating source terms, analysts tend to use the DOE Handbook's bounding values on airborne release fractions (ARFs) and respirable fractions (RFs) for various categories of insults (representing potential accident release categories). This is typically due to both time constraints and the avoidance of regulatory critique. Unfortunately, these bounding ARFs/RFs represent extremely conservative values. Moreover, they were derived from very limited small-scale bench/laboratory experiments and/or from engineered judgment. Thus, the basis for the data may not be representative of the actual unique accident conditions and configurations being evaluated. The goal of this research is to develop a more accurate and defensible method to determine bounding values for the DOE Handbook using state-of-art multi-physics-based computer codes. This enables us to better understand the fundamental physics and phenomena associated with the types of accidents in the handbook. In this fourth year, we improved existing computational capabilities to better model fragmentation situations to capture small fragments during an impact accident. In addition, we have provided additional new information for various sections of Chapters 4 and 5 of the Handbook on free fall powders and impacts of solids, and have provided the damage ratio simulations for containers (7A drum and standard waste box) for various drops and impact scenarios. Thus, this work provides a low-cost method to establish physics-justified safety bounds by considering specific geometries and conditions that may not have been previously measured and/or are too costly to perform during an experiment.

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TYPE SAND Report YEAR 2018
DOIOSTI
Results 25901–26000 of 99,299
Results 25901–26000 of 99,299