Savannah River Nuclear Solutions | Date: 2016-10-18
Supported catalysts having an atomic level single atom structure are provided such that substantially all the catalyst is available for catalytic function. Processes of forming a catalyst unto a porous catalyst support is also provided.
Savannah River Nuclear Solutions | Date: 2015-09-28
A method for digestion and gasification of graphite for removal from an underlying surface is described. The method can be utilized to remove graphite remnants of a formation process from the formed metal piece in a cleaning process. The method can be particularly beneficial in cleaning castings formed with graphite molding materials. The method can utilize vaporous nitric acid (HNO_(3)) or vaporous HNO_(3 )with air/oxygen to digest the graphite at conditions that can avoid damage to the underlying surface.
Savannah River Nuclear Solutions | Date: 2016-08-29
A system and method for the secure storage and transmission of data is provided. A data aggregate device can be configured to receive secure data from a data source, such as a sensor, and encrypt the secure data using a suitable encryption technique, such as a shared private key technique, a public key encryption technique, a Diffie-Hellman key exchange technique, or other suitable encryption technique. The encrypted secure data can be provided from the data aggregate device to different remote devices over a plurality of segregated or isolated data paths. Each of the isolated data paths can include an optoisolator that is configured to provide one-way transmission of the encrypted secure data from the data aggregate device over the isolated data path. External data can be received through a secure data filter which, by validating the external data, allows for key exchange and other various adjustments from an external source.
Savannah River Nuclear Solutions | Date: 2016-02-12
A radiation imaging system includes a casing and a camera disposed inside the casing. A first field of view through the casing exposes the camera to light from outside of the casing. An image plate is disposed inside the casing, and a second field of view through the casing to the image plate exposes the image plate to high-energy particles produced by a radioisotope outside of the casing. An optical reflector that is substantially transparent to the high-energy particles produced by the radioisotope is disposed with respect to the camera and the image plate to reflect light to the camera and to allow the high-energy particles produced by the radioisotope to pass through the optical reflector to the image plate.
Savannah River Nuclear Solutions | Date: 2015-12-01
Methods for forming an identifying mark in a structure are described. The method is used in conjunction with an additive manufacturing method and includes the alteration of a process parameter during the manufacturing process. The method can form in a unique identifying mark within or on the surface of a structure that is virtually impossible to be replicated. Methods can provide a high level of confidence that the identifying mark will remain unaltered on the formed structure.
Savannah River Nuclear Solutions | Date: 2015-07-15
A system is provided for tamper identification. At least one fastener is used to seal a compartment or secure a device. The fastener has a tamper identification surface with a unique grain structure that is altered if the fastener is removed or otherwise exposed to sufficient torque. After a period of time such as e.g., shipment and/or storage of the sealed container, a determination of whether tampering has occurred can be undertaken by examining the grain structure to determine if it has changed since the fastener was used to seal the container or secure the device. Tools and other components specifically designed to alter the grain structure of the tamper identification surface may be employed. A variety of fastener types may be used, and the fastener may be configured with one or more materials more susceptible to alteration of the grain structure along the tamper identification surface so as to enhance the ability to determine tampering. Authentication is also provided.
Savannah River Nuclear Solutions | Date: 2016-06-21
A process of producing electrically conductive pathways within additively manufactured parts and similar parts made by plastic extrusion nozzles. The process allows for a three-dimensional part having both conductive and non-conductive portions and allows for such parts to be manufactured in a single production step.
Savannah River Nuclear Solutions | Date: 2015-02-25
Disclosed are methods for determining the redox condition of cementitious materials. The methods are leaching methods that utilize an in situ redox indicator that is present in the cementitious materials as formed. The in situ redox indicator leaches from cementitious material and, when the leaching process is carried out under anaerobic conditions can be utilized to determine the redox condition of the material. The in situ redox indicator can exhibit distinct characteristics in the leachate depending upon the redox condition of the indicator.
Savannah River Nuclear Solutions | Date: 2016-03-29
A galvanic cell and methods of using the galvanic cell is described for the recovery of uranium from used nuclear fuel according to an electrofluorination process. The galvanic cell requires no input energy and can utilize relatively benign gaseous fluorinating agents. Uranium can be recovered from used nuclear fuel in the form of gaseous uranium compound such as uranium hexafluoride, which can then be converted to metallic uranium or UO_(2 )and processed according to known methodology to form a useful product, e.g., fuel pellets for use in a commercial energy production system.
Savannah River Nuclear Solutions | Date: 2016-02-16
Disclosed are methods for immobilizing hazardous waste within a solid waste form and solid waste forms that can be formed according to the methods. The methods include dispersing waste materials throughout a metallic matrix material to form a particulate mixture followed by solidification of at least the metallic components of the mixture to form a solid waste form. The solidification can be carried out either incrementally in an additive manufacturing process or in bulk, but in either case, the solidification process is carried out such that waste material remains located within the solid metallic matrix essentially as deposited and there is little or no opportunity for the waste materials to separate and disperse throughout the matrix material. As such, the waste is retained within the solidified matrix essentially as deposited with no possibility for the waste to coalesce either during or following the solidification process.