The RF impedance of the sector isolation valve of the APS storage ring system was measured by the wire method with a synthetic pulse technique [1]. The coupling impedance as well as the energy loss of the isolation valve with and without an RF liner or screen, and the flange gap of the various sizes was calculated from the measurements. There appear to be resonances at certain frequencies in th...

Two-dimensional neutronics calculations have been performed to determine the nuclear radiation environment at selected locations in the FIRE diagnostics penetrations and to assess the impact of streaming on average flux outside the port flange. The total neutron flux (integrated over all energies), the fast neutron flux (E > 0.1 MeV) and the total gamma flux were calculated at the front of the ...

This paper describes the results of an experimental study to verify proposed design requirements for eccentrically braced frame links with hollow rectangular i.e., tubular cross sections. Twelve primary link specimens and two supplementary links that have different end connections are tested. Three cross sections and four normalized link lengths are considered. Two of the cross sections have we...

Abstract In empty well killing, in order to save the time and cost of killing well, dynamic replacement method is often used kill well. The main problem for wells how avoid terrible working conditions caused by flooding, such as gas carrying fluid, fluid being brought wellhead. Based on principle flooding formation basic tenets correlation experiment method, this paper incorporates viscosity, s...

a general robotic mechanism was presented for in-pipe inspection oflevel pipes with varied diameter or curved pipelines. the robot employed three legs comprised of parallelogram linkages mechanism which enables adapting to various elbow joints in the piping systems. the curvatures in pipeline are the most important constraints in front of the robot through navigation process. to study the adapt...

Recently, the vacuum technology has gained a significant relevance in many areas of basic research and applied science. Low-pressure environment of various quality is in common use in the top technology industrial applications. In the most cases, the leaks are the most common sources of deterioration in quality of vacuum. Therefore, the leak detection and consequential leak localization become ...

V-band clamps offer an efficient clamping solution in diverse applications including process equipment, exhaust systems and air handling. This paper studies the distribution of interface contact pressure between the V-band and flange when the coupling is established. The determination of the contact area and pressure distribution in a joint is essential information, as it determines the integri...