UNT Libraries Government Documents Department - 6 Matching Results

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D0 Silicon Upgrade: Calorimeter Installation Bridge Non-Destructive Test Result

Description: After the central calorimeter was installed on the center beam a cracked weld was found on the bridge. The weld was a partial penetration between the top rail plate and the T-1 steel nose section. The crack is fully across the width of the rail plate and the rail is depressed in a concave shape. That is, the depression is deeper in the center and feathers out to zero at the end of the rail. Upon close inspection it was obvious that there was no penetration of weld metal into the T-1 material. The assumption is that the T-1 was not properly pre-heated before welding. The reason for the concave depression comes from the fact that the rail plate rests on the flanges of the 'S' beams and that during welding the plate pulled off the beams. This weld failure can not propagate to any other welds and therefore, will not start a chain of failures. Clearly the failure of this weld did not hinder the installation of the central calorimeters. This weld failure occurred on both sides of the bridge. This failure did, however, alert us to check the critical weld on the bridge, S-beam webs to T-1 nose section, to assure us we had a sound weldment. (Note: it must be used again for both EC's). We contacted M.Q.S. Inspection Inc. (Lab contractor for N.D.T.). A technician from M.Q.S. came to DAB and performed an ultrasonic examination of the welds in question. The exam showed that we don't have a full penetration weld of the S Beam web, but that it is between 67-83%. A calculation was performed based on 67% penetration and the CC & EC loads. In both cases the weld stresses were well within acceptable limits (see calculations attached). Based on this result, it is ...
Date: October 29, 1990
Creator: Stredde, H. J.

Deactivation by carbon of iron catalysts for indirect liquefaction

Description: This report describes recent progress in a fundamental, three-year investigation of carbon formation and its effects on the activity and selectivity of promoted iron catalysts for synthesis, the objectives of which are: determine rates and mechanisms of carbon deactivation of unsupported Fe and Fe/K catalysts during CO hydrogenation over a range of CO concentrations, CO:H{sub 2} ratios, and temperatures; model the rates of deactivation of the same catalysts in fixed-bed reactors. During the fourteenth quarter design of software for a computer-automated reactor system to be used in the kinetic and deactivation studies was continued. Further progress was made toward the completion of the control language, control routines, and software for operating this system. Progress was also made towards testing of the system hardware and software. 47 refs.
Date: October 29, 1990
Creator: Bartholomew, C.H.

Development of improved iron Fischer-Tropsch catalysts

Description: The objective of proposed research is development of catalysts with enhanced slurry phase activity and better selectivity to fuel range products, through a more detailed understanding and systematic studies of the effects of pretreatment procedures and promoters/binders (silica) on catalyst performance.
Date: October 29, 1990
Creator: Bukur, D.B.

Development of improved iron Fischer-Tropsch catalysts. Quarterly technical progress report, 1 July 1990--30 September 1990

Description: The objective of proposed research is development of catalysts with enhanced slurry phase activity and better selectivity to fuel range products, through a more detailed understanding and systematic studies of the effects of pretreatment procedures and promoters/binders (silica) on catalyst performance.
Date: October 29, 1990
Creator: Bukur, D. B.

International oil and gas exploration and development activities

Description: This report is part of an ongoing series of quarterly publications that monitors discoveries of oil and natural gas in foreign countries and provides an analysis of the reserve additions that result. The report is prepared by the Energy Information Administration (EIA) of the US Department of Energy (DOE) under the Foreign Energy Supply Assessment Program (FESAP). It presents a summary of discoveries and reserve additions that result from recent international exploration and development activities. It is intended for use by petroleum industry analysts, various government agencies, and political leaders in the development, implementation, and evaluation of energy plans, policy, and legislation. 25 refs., 8 figs., 4 tabs.
Date: October 29, 1990

Monthly energy review, July 1990

Description: US total energy consumption in July 1990 was 6.7 quadrillion Btu Petroleum products accounted for 42 percent of the energy consumed in July 1990, while coal accounted for 26 percent and natural gas accounted for 19 percent. Residential and commercial sector consumption was 2.3 quadrillion Btu in July 1990, up 2 percent from the July 1989 level. The sector accounted for 35 percent of July 1990 total consumption, about the same share as in July 1989. Industrial sector consumption was 2.4 quadrillion Btu in July 1990, up 2 percent from the July 1989 level. The industrial sector accounted for 36 percent of July 1990 total consumption, about the same share as in July 1989. Transportation sector consumption of energy was 1.9 quadrillion Btu in July 1990, up 1 percent from the July 1989 level. The sector consumed 29 percent of July 1990 total consumption, about the same share as in July 1989. Electric utility consumption of energy totaled 2.8 quadrillion Btu in July 1990, up 2 percent from the July 1989 level. Coal contributed 53 percent of the energy consumed by electric utilities in July 1990, while nuclear electric power contributed 21 percent; natural gas, 12 percent; hydroelectric power, 9 percent; petroleum, 5 percent; and wood, waste, geothermal, wind, photovoltaic, and solar thermal energy, about 1 percent.
Date: October 29, 1990