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Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
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Country of Publication:
United States

Citation Formats

Pritychenko B. NUCLEAR DATA FOR ASTROPHYSICAL MODELING. United States: N. p., 2016. Web.
Pritychenko B. 2016. "NUCLEAR DATA FOR ASTROPHYSICAL MODELING". United States. doi:.
author = {Pritychenko B.},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2016,
month = 8

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  • The purpose of this chapter is to motivate the combination of traditional cyber security audit data with psychosocial data, so as to move from an insider threat detection stance to one that enables prediction of potential insider presence. Two distinctive aspects of the approach are the objective of predicting or anticipating potential risks and the use of organizational data in addition to cyber data to support the analysis. The chapter describes the challenges of this endeavor and progress in defining a usable set of predictive indicators, developing a framework for integrating the analysis of organizational and cyber security data tomore » yield predictions about possible insider exploits, and developing the knowledge base and reasoning capability of the system. We also outline the types of errors that one expects in a predictive system versus a detection system and discuss how those errors can affect the usefulness of the results.« less
  • A model to predict the failure of Grade-2 titanium nuclear waste containers has been developed. Two major corrosion modes are included in the model: failure by crevice corrosion and failure by HIC. A small number of containers are assumed to be defective and to fail within 50 a of emplacement. The model is probabilistic in nature and each modeling parameter is assigned a range of values, resulting in a distribution of corrosion rates and failure times. The crevice corrosion rate is assumed to be dependent only on the properties of the material used and the temperature of the vault. Crevicemore » corrosion is assumed to initiate rapidly on all containers and to propagate indefinitely without repassivation. Failure by hydrogen-induced cracking is assumed to be inevitable once the container temperature falls to {le} 30 C. Depending on the rate at which they are expected to cool, the temperature-time profiles for individual containers are approximated by two-step, or single-step temperature-time functions. These functions are then used with experimentally measured corrosion rates to compute the fractional failure rates and cumulative fractions of containers failed as a function of time. Approximately 97% of all containers are predicted to fail by crevice corrosion. Only {approximately} 0.025% fail before 500 a, the time considered a minimum for the containment of nuclear waste. The majority of containers fail between 1,200 and 7,000 a.« less
  • In June 1975, the National Research Council (NRC) undertook a comprehensive study of the Nation's prospective energy economy during the period 1985--2010, with special attention to the role of nuclear power among the alternative energy systems. The goal of the study is to assist the American people and government in formulating energy policy. An NRC-wide Committee on Nuclear and Alternative Energy Systems (CONAES) was appointed to conduct the study. The six energy models used by the Modeling Resource Group were DRI Energy Model/172; Brookhaven DESOM/174; the SRI Energy Model/176; FEA PIES/179; ETA/180; the Nordhaus Simulation Model/181. General conclusions that cenmore » be drawn are as follows: the expected value of the benefit of developing the advanced nuclear option is in the order of $3 billion when development takes the form of either an advanced converter or breeder after 2020; the economically worst decision among the 25 analyzed here was a program to develop both the advanced converter and the breeder very quickly; the estimates made about the value of perfect information, it is probable that the estimates made here would be slightly more favorable to developing advanced nuclear technologyif a substantial improvement in knowledge about the uncertain driving variables was attained; the standard deviations of the estimates of net benefits tend to cluster around $20 billion; and finally, it should be emphasized that all the estimates in this analysis are made without weighing the environmental costs of advanced nuclear reactor strategies into the calculations. (MCW)« less
  • This report gives results of a technical survey of the hydrogeologic characteristics of 400 sites throughout the United States. Statistical distribution are provided for the properties of hydraulic conductivity, seepage velocity, vertical penetration depth into saturated zone, hydraulic gradient, saturated thickness of aquifer, and depth to top of the water table. Twelve hydrogeologic settings are derived from the DRASTIC system and the properties of each are summarized.