scholarly journals Renewal of the Control System and Reliable Long Term Operation of the LHD Cryogenic System

2015 ◽  
Vol 67 ◽  
pp. 77-82 ◽  
Author(s):  
T. Mito ◽  
A. Iwamoto ◽  
K. Oba ◽  
S. Takami ◽  
S. Moriuchi ◽  
...  
Keyword(s):  
Control System ◽  
Cryogenic System ◽  
Term Operation

The investigation of the sludge reduction efficiency and mechanisms in oxic–settling–anaerobic (OSA) process

2016 ◽  
Vol 73 (10) ◽  
pp. 2311-2323 ◽  
Author(s):  
Özlem Demir ◽  
Ayşe Filibeli
Keyword(s):  
Control System ◽  
Volume Index ◽  
Endogenous Respiration ◽  
Sludge Reduction ◽  
Capillary Suction ◽  
Term Operation ◽  
Effluent Quality ◽  
Conventional Activated Sludge ◽  
Reduction Mechanisms

This paper aims to provide a full understanding of the sludge reduction mechanisms in the oxic–settling–anaerobic (OSA) process and presents an evaluation of the sludge reduction efficiencies and sludge characteristics in this process compared to the conventional activated sludge process. Fifty-eight percent reduction in observed yield in the OSA process was achieved compared to the control system at the end of the operational period with no deterioration of effluent quality. The settleability of sludge in the OSA process was also found to be better than that of the control system in terms of sludge volume index. In long-term operation, capillary suction time and specific resistance to filtration values confirmed that the OSA process showed good filterability characteristics. The results of batch experiments showed that higher endogenous respiration in the systems might lead to lower sludge production and that energy uncoupling had only a limited impact on sludge reduction.

Mechanical behavior of magnetorheological dampers after long-term operation in a cable vibration control system

2018 ◽  
Vol 26 (1) ◽  
pp. e2280 ◽  
Author(s):  
Wenxi Wang ◽  
Xugang Hua ◽  
Xiuyong Wang ◽  
Jiali Wu ◽  
Hongxin Sun ◽  
...  
Keyword(s):  
Control System ◽  
Mechanical Behavior ◽  
Vibration Control ◽  
Magnetorheological Dampers ◽  
Cable Vibration ◽  
Term Operation

scholarly journals Reliable Long-Term Operation of the Cryogenic System for the Large Helical Device

2000 ◽  
pp. 1253-1260 ◽  
Author(s):  
T. Mito ◽  
R. Maekawa ◽  
T. Baba ◽  
S. Moriuchi ◽  
A. Iwamoto ◽  
...  
Keyword(s):  
Cryogenic System ◽  
Term Operation

scholarly journals The Detector Control System of the New Small Wheel for the ATLAS experiment

2021 ◽  
Vol 2105 (1) ◽  
pp. 012025
Author(s):  
Polyneikis Tzanis
Keyword(s):  
Control System ◽  
Continuous Monitoring ◽  
Automatic Processes ◽  
High Luminosity ◽  
Central System ◽  
Term Operation ◽  
Atlas Experiment ◽  
Data Rates ◽  
Detector Control System

Abstract The ATLAS Muon Spectrometer is going through an extensive Phase I upgrade to cope up with the future LHC runs of high luminosity of up to instantaneous luminosity of 7.5 × 1034cm−2s−1. The luminosity increase drastically impacts the ATLAS trigger and readout data rates. The present ATLAS Small Wheel Muon detector will be replaced with a New Small Wheel (NSW) detector which is expected to be installed in the ATLAS underground cavern by the end of the Long Shutdown 2 of the LHC. Due to its complexity and long-term operation, the NSW requires the development of a sophisticated Detector Control System (DCS). The use of such a system is necessary to allow the detector to function consistently and safely as well as to function as a seamless interface to all sub-detectors and the technical infrastructure of the experiment. The central system handles the transition between the probe’s possible operating states while ensuring continuous monitoring and archiving of the system’s operating parameters. Any abnormality in any subsystem of the detector triggers a signal or alert (alarm), which alerts the user and either adapts to automatic processes or allows manual actions to reset the system to function properly.

Analysis of crystallite size changes in a hematite and magnetite formed on steel used in the power idustry

2017 ◽  
Vol 1 (21) ◽  
pp. 65-73
Author(s):  
Monika Gwoździk
Keyword(s):  
Elevated Temperature ◽  
Oxide Layer ◽  
Cross Section ◽  
X Ray ◽  
Term Operation ◽  
Diffraction Line Profile ◽  
Crystallite Sizes ◽  
Scherrer Formula ◽  
Pipe Outlet

The paper presents results of studies on the crystallite sizes of oxide layer formed during a long-term operation on 10CrMo9-10 steel at an elevated temperature (T = 545° C, t = 200,000 h). This value was determined by a method based on analysis of the diffraction line profile, according to a Scherrer formula. The oxide layer was studied on a surface and a cross-section at the outer and inner site on the pipe outlet, at the fire and counter-fire wall of the tube. X-ray studies were carried out on the surface of a tube, then the layer’s surface was polished and the diffraction measurements repeated to reveal differences in the originated oxides layer.

Sign in / Sign up

Export Citation Format

Share Document