No abstract available

No abstract available

[en] The workshop was called to assess the performance of neutron dosimetry per the responses from ten DOE accelerator facilities to an Office of Energy Research questionnaire regarding implementation of a personnel dosimetry requirement in DRAFT DOE 5480.ACC, ''Safety of Accelerator Facilities''. The goals of the workshop were to assess the state of dosimetry at high energy accelerators and if such dosimetry requires improvement, to reach consensus on how to proceed with such improvements. There were 22 attendees, from DOE Programs and contract facilities, DOE, Office of Energy Research (ER), Office of Environmental Safety and Health (EH), Office of Fusion Energy, and the DOE high energy accelerator facilities. A list of attendees and the meeting agenda are attached. Copies of the presentations are also attached

[en] A spectrometer to measure neutron-induced charged-particle producing reactions was developed and yields data with greatly improved signal-to-background ratios. It consists of a magnetic quadrupole lens which focusses the charged particles onto a silicon surface barrier detector or a two-detector telescope which is more than 2 meters from the sample being irradiated. The efficiency of the spectrometer is calibrated experimentally and depends only on values for the (n,p) elastic cross section and the stopping power of polyethylene. Further development is underway to replace the surface-barrier ΔE counter with a proportional counter of larger area. This detector, combined with a larger E counter (surface barrier) could increase the effective solid angle by a factor of five. The results for (n,xp), (n,xd) and (n,xα) cross sections are summarized for the eight target materials studied so far. Measurements of the charged particle spectra have established that cross sections for production of protons below 2.5 MeV are significant for some targets; in fact protons as low as 800 keV have been detected from aluminum. These low energy protons would be quite difficult to measure with conventional counter telescope spectrometers

[en] Nondestructive assay (NDA) fills a unique and supplementary role to nondestructive evaluation (NDE) in the manufacture of nuclear fuel. NDA can be used for quantitative measurements of importance for physical security, materials control, quality control, process control and safeguards purposes. These functional areas are not necessarily independent and measurements for one may be used for the others. A brief review will be made of uses of NDA in the fuel fabrication process from input UF₆ to completed fuel assemblies, with emphasis on the utilization of commercially available NDA instrumentation

No abstract available

No abstract available

[en] Measurements were made of the hydrogen and helium production cross sections for both natural elements and separated isotopes which are constituents of metal under consideration for the first wall of fusion reactors

[en] The feasibility of the use of standardized containers for special nuclear material storage, transfer, and measurement is being investigated to widen the application of nondestructive assay techniques to the regulation and control of special nuclear material. In this report results are presented of a survey of the current usage of containers for SNM gathered in checklist form for containers in use at 28 major users of SNM. Visits were made to 15 licensed and 8 license-exempt facilities to collect container usage data and discuss the potential impacts of the utilization of standardized containers with plant personnel. Brief descriptions of the functions of the facilities as they relate to SNM handling are given. The checklist information is presented in tabular form and discussed by container category and NDA technique. The feasibility of container standardization is discussed and an outline of the activities of the next phase of the program is presented.None

[en] The need and feasibility of standardizing containers used for the storage, transfer, and measurement of special nuclear materials have been investigated with respect to the use of nondestructive assay techniques for regulation and control of such material. Two findings indicate a need for standardization: (1) there are a great multiplicity of container shapes, sizes, and materials in present use, and (2) the responses of NDA instruments are sensitive to slight variations in the dimensions of containers, including wall thickness. A value/impact statement has been prepared with respect to standardizing containers. 3 refs