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Title: Small-Scale Experiments-Sandia Instrumented Thermal Ignition (SITI) testing summary


Abstract not provided.

 [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Technical Report
Country of Publication:
United States

Citation Formats

Kaneshige, Michael J., and Snedigar, Shane. Small-Scale Experiments-Sandia Instrumented Thermal Ignition (SITI) testing summary. United States: N. p., 2015. Web. doi:10.2172/1177755.
Kaneshige, Michael J., & Snedigar, Shane. Small-Scale Experiments-Sandia Instrumented Thermal Ignition (SITI) testing summary. United States. doi:10.2172/1177755.
Kaneshige, Michael J., and Snedigar, Shane. 2015. "Small-Scale Experiments-Sandia Instrumented Thermal Ignition (SITI) testing summary". United States. doi:10.2172/1177755.
title = {Small-Scale Experiments-Sandia Instrumented Thermal Ignition (SITI) testing summary},
author = {Kaneshige, Michael J. and Snedigar, Shane},
abstractNote = {Abstract not provided.},
doi = {10.2172/1177755},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2015,
month = 2

Technical Report:

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  • Abstract not provided.
  • Since the beginning of Sandia Corporation's "Component Recovery Program" in late 1954, the possibility of using certain types of materials for cushioning purposes has been recognized. As a result. considerable effort has been made to investigate the compression characteristics of these materials. particularly to determine whether such characteristics are dependent on the rate of loading. This report describes an 11-foot drop-testing device which was built and put into operation early in the program so that initial testing could be done on small- scale cushion samples at loading rates up to 25 ft/sec. (auth)
  • Based upon the presented sensitivity data for the examined calcium nitrate mixtures using sugar and sawdust, contact handling/mixing of these materials does not present hazards greater than those occurring during handling of dry PETN powder. The aluminized calcium nitrate mixtures present a known ESD fire hazard due to the fine aluminum powder fuel. These mixtures may yet present an ESD explosion hazard, though this has not been investigated at this time. The detonability of these mixtures will be investigated during Phase III testing.
  • Eight tests using different HLW feeds were conducted on the DM100-BL to determine the effect of variations in glass properties and feed composition on processing rates and melter conditions (off-gas characteristics, glass processing, foaming, cold cap, etc.) at constant bubbling rate. In over seven hundred hours of testing, the property extremes of glass viscosity, electrical conductivity, and T{sub 1%}, as well as minimum and maximum concentrations of several major and minor glass components were evaluated using glass compositions that have been tested previously at the crucible scale. Other parameters evaluated with respect to glass processing properties were +/-15% batching errorsmore » in the addition of glass forming chemicals (GFCs) to the feed, and variation in the sources of boron and sodium used in the GFCs. Tests evaluating batching errors and GFC source employed variations on the HLW98-86 formulation (a glass composition formulated for HLW C-106/AY-102 waste and processed in several previous melter tests) in order to best isolate the effect of each test variable. These tests are outlined in a Test Plan that was prepared in response to the Test Specification for this work. The present report provides summary level data for all of the tests in the first test matrix (Matrix 1) in the Test Plan. Summary results from the remaining tests, investigating minimum and maximum concentrations of major and minor glass components employing variations on the HLW98-86 formulation and glasses generated by the HLW glass formulation algorithm, will be reported separately after those tests are completed. The test data summarized herein include glass production rates, the type and amount of feed used, a variety of measured melter parameters including temperatures and electrode power, feed sample analysis, measured glass properties, and gaseous emissions rates. More detailed information and analysis from the melter tests with complete emission chemistry, glass durability, and melter operating details will be provided in the final report. A summary of the tests that were conducted is provided in Table 1. Each of the seven tests was of nominally one hundred hours in duration. Test B was conducted in two equal segments: the first with nominal additives, and the second with the replacement of borax with a mixture of boric acid and soda ash to determine the effect of alternative OPC sources on production rates and processing characteristics. Interestingly, sugar additions were required near mid points of Tests W and Z to reduce excessive foaming that severely limited feed processing rates. The sugar additions were very effective in recovering manageable processing conditions, albeit over the relatively short remainder of the test duration. Tests W and Z employed the highest melt viscosities but not by a particularly wide margin. Other tests, which did not exhibit such foaming Issues, employed higher concentrations of manganese or iron or both. These results highlight the need for the development of protocols for the a priori determination of which HLW feeds will require sugar additions and the appropriate amounts of sugar to be added in order to control foaming (and maintain throughput) without over-reduction of the melt (which could lead to molten metal formation). In total, over 8,800 kg of feed was processed to produce over 3200 kg of glass. Steady-state processing rates were achieved, and no secondary sulfate phases were observed during any of the tests. Analysis was performed on samples of the glass product taken throughout the tests to verify composition and properties. Sampling and analysis was also performed on melter exhaust to determine the effect of the feed and glass changes on melter emissions.« less
  • Brief summaries of work currently underway or completed in the period from 1 January to 31 March 1979 are presented. One describes the development and testing of small spherical charges which will be emplaced in concrete blocks in the laboratory to simulate large explosions. A second section discusses an analysis of the free-field data from the MERLIN event. The other three sections are concerned with finite difference simulations of explosion and earthquake sources. These include results from calculations of PILEDRIVER and of decoupled explosions in salt. Also is described is a fracture criterion for three-dimensional finite difference modeling of earthquakemore » faulting.« less