Georgette S.,SERA |
Picart S.,SERA |
Bouyer C.,SMCS |
Maurin J.,SERA |
And 4 more authors.
Journal of Electroanalytical Chemistry | Year: 2014
Spent fuel reprocessing and notably plutonium recycling contributes in enhancing the sustainability of nuclear energy by preserving uranium natural resources and decreasing the long term radiotoxicity of the final waste. After initial dissolution of the spent nuclear fuel in nitric acid, uranium and plutonium recovery from ultimate waste (fission products and minor actinides) is operated by a liquid-liquid extraction process (PUREX process) and plutonium partitioning from uranium is run on the basis of the selective reduction of Pu and its back extraction. Therefore, the redox properties of Pu in nitric acid are of prime importance and the stabilization of Pu at its lower redox state + III is to be mastered. This study then deals with the characterization of Pu(IV)/Pu(III) redox couple in aqueous nitric acid solution. It was aimed at measuring physico-chemical features of the redox couple such as half-wave and conditional standard potentials, diffusion coefficients and charge transfer rate constant in nitric acid medium. These features have been used in modeling experimental results of preparative Pu(IV) reduction tests in nitrate medium in a laboratory parallel plate electrode cell. © 2014 Elsevier B.V. All rights reserved.
News Article | February 15, 2017
Sera-Brynn, LLC, a top-ranked cybersecurity firm, stated today there is a rapid increase in requests for cybersecurity services from the U.S. Department of Defense (DoD) contractor community. Increased demand for cybersecurity services drove Sera-Brynn’s 91 percent compound annual growth rate in 2016. Sera-Brynn attributes the spike in demand to two things – the widely-recognized increase in the volume of cyber-attacks against Defense-related organizations and businesses, and the mandatory security requirements imposed on contractors by the Defense Federal Acquisition Regulation Supplement (DFARS). “We see firsthand many alarming instances of DoD contractors experiencing debilitating network breaches,” stated Patrick McLaughlin, Director of Business Development for Sera-Brynn. “And this has led to loss of government and personally identifiable information, in addition to having to pay ransoms to regain business continuity,” he added. The DFARS cybersecurity clause 252.204-7012, which imposes security and reporting requirements on DoD contractors and subcontractors, must be fully implemented by December 31, 2017. Failure to do so may result in administrative, contractual, civil, and criminal remedies. The DFARS clause also mandates that cyber-attacks involving covered defense information (known as “CDI”), information that often resides on contractor networks, must be reported to the DoD within 72 hour of discovery. “DFARS regulatory compliance is coming like a freight train,” stated Rob Hegedus, co-founder and CEO of Sera-Brynn. “DFARS compliance is unavoidable.” About Sera-Brynn: Sera-Brynn is a leading cybersecurity audit and advisory firm. The Virginia-based company offers threat management, compliance and risk assessment, risk control, and incident response services that enable clients to secure their computing environments and meet applicable and mandatory cybersecurity regulatory standards. This technical expertise is the backbone of their DFARS compliance services. Founded in 2011 by former members of the U.S. intelligence community, Sera-Brynn is ranked #10 worldwide on the Cybersecurity 500 list. http://www.sera-brynn.com.