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Online since: April 2018
Authors: Bebe Adrian Olei, Sorin Vasile Savu, Ion Ciupitu, Gabriel Constantin Benga
Introduction
Introduction of LNG as a fuel to power ships sailing on inland waters led to the emergence of new problems, namely, competent seafarers in the field of liquefied gas.
The overall aim of STCIN is the creation of a “level playing field” by establishing common standards with regards to the professional competencies of nautical personnel, quality criteria of teaching instructors or the attributes of learning tools such as simulators, training ships or practical learning equipment.
the risk accompanied with the characteristics of LNG Explain the term ‘Rapid Phase Transition’ (RPT) Describe ‘Boil Off Gas’ Describe “roll over” and sloshing (if applicable) Explain the danger of cloud formation when LNG comes into contact with outside air and hot surfaces Describe the hazard associated with handling LNG (e.g. asphyxia, low temperatures) Describe dangers and risks related to electrostatic electricity and ignition sources Explain the term ‘cryogenic’ and the risks presents for humans Explain the risks of expanding trapped liquid / BLEVE To recognize dangerous situations and take adequate countermeasures Describe the hazard associated with handling LNG (e.g. asphyxia, low temperatures) Explain the risks of expanding trapped liquid / BLEVE Describe the hazardous areas/EX-zones in relation to LNG and operational limitations in those zones Define which approval tools, equipment and instruments need to be used in Ex-zones Describe the behavior of LNG when discharged (into water
systems, LNG) Recognize the increased risk of gas leakage in the tank connection space Perform basic first aid in case of injuries/physical problems due to LNG exposure Describe how cryogenic properties of LNG affect standard steel components upon contact Propose solutions and measures when encountering unsafe situations not covered in QC and QM To describe and apply the safety and security plan Describe the hazardous areas/EX-zones in relation to LNG and operational limitations in those zones To operate safety devices during an bunkering Act in accordance with applicable contingency plan in case of an emergency Determine a safe position on board in case of an LNG release, emergency discharge or spill Determine the most suitable vessel position/vessel orientation considering environmental conditions in case of an LNG release or spill Describe the actions required to mitigate spills Demonstrate the proper way to handle an LNG-spill Demonstrate directing a gas-cloud using the effect of water
level, meteorological conditions) permit operations Explain the difficulty of calculating quantity of LNG bunkers Explain the procedure for bunker quantity calculations as defined by the company Check specification of LNG with agreed order Describe the physical properties of bunkers Interpret readings from level gauging equipment Interpret readings from metering equipment Perform Emergency Shut Down tests Describe the tasks and responsibilities of both crew and bunkering personnel during preparation and bunkering operation Determine the conditions of bunker-tanks Explain the importance of earthing/grounding and the role in ESD Describe measures taken on board to ensure proper grounding and static discharge during operations/bunkering Determine the need for inerting/purging of the filling lines in prior to the bunker transfer Describe measures taken to be prepared for incidents and emergencies (firefighting equipment, drip trays, water curtain) To explain the nature of safety devices and
The overall aim of STCIN is the creation of a “level playing field” by establishing common standards with regards to the professional competencies of nautical personnel, quality criteria of teaching instructors or the attributes of learning tools such as simulators, training ships or practical learning equipment.
the risk accompanied with the characteristics of LNG Explain the term ‘Rapid Phase Transition’ (RPT) Describe ‘Boil Off Gas’ Describe “roll over” and sloshing (if applicable) Explain the danger of cloud formation when LNG comes into contact with outside air and hot surfaces Describe the hazard associated with handling LNG (e.g. asphyxia, low temperatures) Describe dangers and risks related to electrostatic electricity and ignition sources Explain the term ‘cryogenic’ and the risks presents for humans Explain the risks of expanding trapped liquid / BLEVE To recognize dangerous situations and take adequate countermeasures Describe the hazard associated with handling LNG (e.g. asphyxia, low temperatures) Explain the risks of expanding trapped liquid / BLEVE Describe the hazardous areas/EX-zones in relation to LNG and operational limitations in those zones Define which approval tools, equipment and instruments need to be used in Ex-zones Describe the behavior of LNG when discharged (into water
systems, LNG) Recognize the increased risk of gas leakage in the tank connection space Perform basic first aid in case of injuries/physical problems due to LNG exposure Describe how cryogenic properties of LNG affect standard steel components upon contact Propose solutions and measures when encountering unsafe situations not covered in QC and QM To describe and apply the safety and security plan Describe the hazardous areas/EX-zones in relation to LNG and operational limitations in those zones To operate safety devices during an bunkering Act in accordance with applicable contingency plan in case of an emergency Determine a safe position on board in case of an LNG release, emergency discharge or spill Determine the most suitable vessel position/vessel orientation considering environmental conditions in case of an LNG release or spill Describe the actions required to mitigate spills Demonstrate the proper way to handle an LNG-spill Demonstrate directing a gas-cloud using the effect of water
level, meteorological conditions) permit operations Explain the difficulty of calculating quantity of LNG bunkers Explain the procedure for bunker quantity calculations as defined by the company Check specification of LNG with agreed order Describe the physical properties of bunkers Interpret readings from level gauging equipment Interpret readings from metering equipment Perform Emergency Shut Down tests Describe the tasks and responsibilities of both crew and bunkering personnel during preparation and bunkering operation Determine the conditions of bunker-tanks Explain the importance of earthing/grounding and the role in ESD Describe measures taken on board to ensure proper grounding and static discharge during operations/bunkering Determine the need for inerting/purging of the filling lines in prior to the bunker transfer Describe measures taken to be prepared for incidents and emergencies (firefighting equipment, drip trays, water curtain) To explain the nature of safety devices and
Online since: January 2014
Authors: Zhi An Huang, Huan Yong E, Yu Kun Gao, Ying Hua Zhang, Ming Shan Gong
What is more, at the northwest of the pit, lithology with water was composed of alluvial deposits and broken sediments, the depth of the strata with water is more than 80 miles.
So the impact of water on slope stability should be fully considered during mining process.
These two aquifers can’t constitute a major deposit water-filled aquifer because either rich water ability or water permeability is weak.
The gully contained water is composed of sediments and residual talus.
The depth of strata with water is more than 80 miles.
So the impact of water on slope stability should be fully considered during mining process.
These two aquifers can’t constitute a major deposit water-filled aquifer because either rich water ability or water permeability is weak.
The gully contained water is composed of sediments and residual talus.
The depth of strata with water is more than 80 miles.
Online since: August 2019
Authors: Jana Boháčová, Lukáš Prochazka
It is a natural quartz sand, which is folded of rounded particles and the silica content is min. 98 %, fraction 0/2 mm and a moisture content of less than 0.2 %. [5]
The water was used from the water supply line.
This water is considered to be suitable according to ČSN EN 1008: Mixing water for concrete - Specification for sampling, testing and assessing the suitability of water, including water recovered from processes in the concrete industry, as mixing water for concrete [4] Activators are alkaline substances that bring into the system the alkaline environment that is required to start the hydration processes of blast furnace slag.
Sodium water glass and a anhydrous sodium metasilicate were used in the experiment.
All mixtures based on MKS reached higher values than those prepared with sodium water glass.
Greater deflection was achieved with the sodium water glass-activated mixture.
This water is considered to be suitable according to ČSN EN 1008: Mixing water for concrete - Specification for sampling, testing and assessing the suitability of water, including water recovered from processes in the concrete industry, as mixing water for concrete [4] Activators are alkaline substances that bring into the system the alkaline environment that is required to start the hydration processes of blast furnace slag.
Sodium water glass and a anhydrous sodium metasilicate were used in the experiment.
All mixtures based on MKS reached higher values than those prepared with sodium water glass.
Greater deflection was achieved with the sodium water glass-activated mixture.
Online since: October 2013
Authors: Pei Hua Liu, Hong Nian Chen
For instance, in a professional football game which is called the world top sport, a great number of fans and spectators are gathered in the competing spot within a short time, leading to a crowded city and traffic jams with sharp increase in vehicle exhaust, and each day, a great deal of living waste is produced in the court and other places in the city by the crowded, which increase the labor by a large amount to clean the waste and badly pollutes local environment.
Water sports such as motor boats and water skiing cause pollution to local waters.
As can be seen in Fig.3, polluted water and rubbish produced in touring is scattered everywhere.
Fig.3 The polluted water and rubbish produced in tourism Environmental Problems Resulting from Golf Playing.
The toxic chemicals from the used fertilizers and pesticides eventually flow into ground, nearby ponds, lakes, rivers or ocean, which makes the nearby and underground water resources badly polluted.
Water sports such as motor boats and water skiing cause pollution to local waters.
As can be seen in Fig.3, polluted water and rubbish produced in touring is scattered everywhere.
Fig.3 The polluted water and rubbish produced in tourism Environmental Problems Resulting from Golf Playing.
The toxic chemicals from the used fertilizers and pesticides eventually flow into ground, nearby ponds, lakes, rivers or ocean, which makes the nearby and underground water resources badly polluted.
Online since: May 2011
Authors: Xiao Ying He, Hong Kai Chen, Guang Ju Wen, Hong Mei Tang
Introduction
Under soakage effect, the water-soil polymer-composite composed of incompact substance on slope flow along the slope which forme the slope debris flow.
Compbell holds that slope debris flow is a type of shallow landslide essentially, while, the shallow landslide is caused by reduction of soil shear strength because of the ascending pore water pressure[1].Thomas K.
(1) Strength attenuation—microcrack silding nucleation stage In rainstorm state,surface water infiltrates into redbeds, molecular force between crystal lattice layer reduces because of infiltration,crystal lattice expands.The volume of rock and soil mass on slope expands after its clay mineral crystal lattice saturated for poor permeability and good water retention of redbeds.
In this stage,the extensive speed of crack expedites,meanwhile, rip crack appears on slope,whose direction is approximate to perpendicular with the maximum gradient direction.Surface water infiltrates into cracks,which engenders big osmotic pressure[11].As well as the expansive force of clay mineral increased,which accelerates the formation and transfixion of crack,the debris flow body exists local glide shown in Fig.13
References [1] Campbell R M: Geological Survey Professional .
Compbell holds that slope debris flow is a type of shallow landslide essentially, while, the shallow landslide is caused by reduction of soil shear strength because of the ascending pore water pressure[1].Thomas K.
(1) Strength attenuation—microcrack silding nucleation stage In rainstorm state,surface water infiltrates into redbeds, molecular force between crystal lattice layer reduces because of infiltration,crystal lattice expands.The volume of rock and soil mass on slope expands after its clay mineral crystal lattice saturated for poor permeability and good water retention of redbeds.
In this stage,the extensive speed of crack expedites,meanwhile, rip crack appears on slope,whose direction is approximate to perpendicular with the maximum gradient direction.Surface water infiltrates into cracks,which engenders big osmotic pressure[11].As well as the expansive force of clay mineral increased,which accelerates the formation and transfixion of crack,the debris flow body exists local glide shown in Fig.13
References [1] Campbell R M: Geological Survey Professional .
Online since: December 2012
Authors: M.A. Megat Johari, B.H. Abu Bakar, Bassam A. Tayeh, A.M. Zeyad
The properties of RPC can be improved by reducing the amount of water, removing all of the coarse aggregate , using highly refined silica fume and introducing steel fibers [4].
After 24 hours the OC specimens were demoulded, cleaned and cured for another two days in a water curing tank.
At the age of three days, the OC substrate specimens were taken out from the water tank for surface preparation.
Then the OC specimens were further cured in a water tank until the age of 28 days since the OC casting date.
Interview held at University of Wisconsin, Madison Engineering Professional Development, MD, WI,< http://epdweb.engr.wisc.edu/AEC_Articles/07_Concrete_Repair_text.html> (2003) Accessed at (Jan., 2012) [2] G.
After 24 hours the OC specimens were demoulded, cleaned and cured for another two days in a water curing tank.
At the age of three days, the OC substrate specimens were taken out from the water tank for surface preparation.
Then the OC specimens were further cured in a water tank until the age of 28 days since the OC casting date.
Interview held at University of Wisconsin, Madison Engineering Professional Development, MD, WI,< http://epdweb.engr.wisc.edu/AEC_Articles/07_Concrete_Repair_text.html> (2003) Accessed at (Jan., 2012) [2] G.
Online since: April 2014
Authors: Xue Lei Tian, Hong Liang Zheng, Lin Li, Xin Xin Yuan
The other part explores the change of the diffusion coefficient with different carbon contents by water quenching to save the organization in the solidification.
The rest were used for water quenching.
The water quenching began when the specimens cooled to 1120℃, and the time interval was 25 seconds.
All these samples then are analyzed by professional image analyze software to obtain the average diameter of graphite nodules.
The rest were used for water quenching.
The water quenching began when the specimens cooled to 1120℃, and the time interval was 25 seconds.
All these samples then are analyzed by professional image analyze software to obtain the average diameter of graphite nodules.
Online since: March 2014
Authors: Andréa A.R. Corrêa, Lina Bufalino, Thiago de Paula Protásio, Marcelo X. Ribeiro, Danilo Wisky, Lourival Marin Mendes
It is a high-concentrated liquid product, water soluble, non-toxic, non-corrosive, and non-flammable.
On average varies from 0.6 to 2.0 MPa [1], which shows apparently low values but viable building that has since monitoring of professional technical responsibility.
Several factors contribute to this variation of resistance: soil characteristics; type of stabilization; craft production; amount of water in the mixture; drying process among others.
Treatments DS328® DS328® (%) DS328® 10% (ml) Water (l) Soil (kg) Adobes (units) T1S - 0 0 50 143,136 26 T2A 1:2000 0.05 613 40 122,688 23 T2B 1:1500 0.07 818 35 122,688 23 T2C 1:1000 0.10 1.431 46 143,136 25 T2D 1:500 0.20 2.862 32 143,136 22 The ideal moisture was determined by field test [1,6] and timber shapes were castings with dimensions 30x15x8cm according relative ratio of length, width and height [7].
The production of adobes had the following procedures: weighing the soil, placed on the wooden platform; addition of the solution of DS328; homogenization; addition of the reagent solution; homogenization, addition of water until the ideal moisture [8].
On average varies from 0.6 to 2.0 MPa [1], which shows apparently low values but viable building that has since monitoring of professional technical responsibility.
Several factors contribute to this variation of resistance: soil characteristics; type of stabilization; craft production; amount of water in the mixture; drying process among others.
Treatments DS328® DS328® (%) DS328® 10% (ml) Water (l) Soil (kg) Adobes (units) T1S - 0 0 50 143,136 26 T2A 1:2000 0.05 613 40 122,688 23 T2B 1:1500 0.07 818 35 122,688 23 T2C 1:1000 0.10 1.431 46 143,136 25 T2D 1:500 0.20 2.862 32 143,136 22 The ideal moisture was determined by field test [1,6] and timber shapes were castings with dimensions 30x15x8cm according relative ratio of length, width and height [7].
The production of adobes had the following procedures: weighing the soil, placed on the wooden platform; addition of the solution of DS328; homogenization; addition of the reagent solution; homogenization, addition of water until the ideal moisture [8].
Online since: November 2013
Authors: Ying Jun Li, Yan Fei Gao, Guo Ping Li, Chun Dong Jiang
PLC controls rough brush motor, high-pressure water cleaning motor, water drying valve, oil drying valve through I/O module.
Professional research institutions of wire ropes at home and aboard are making the corresponding industry safety regulations and national testing standards in order to ensure the production safety.
In the high pressure water cleaning device, it uses high pressure water jet for washing wire ropes.
In the water drying device, it removes water on the surface of wire ropes via the air compression.
The operation control of system includes rough brush motor running, temperature parameters setting, water drying, oil drying, high pressure cleaning motor running, water heating, oil heating, take-up motor running.
Professional research institutions of wire ropes at home and aboard are making the corresponding industry safety regulations and national testing standards in order to ensure the production safety.
In the high pressure water cleaning device, it uses high pressure water jet for washing wire ropes.
In the water drying device, it removes water on the surface of wire ropes via the air compression.
The operation control of system includes rough brush motor running, temperature parameters setting, water drying, oil drying, high pressure cleaning motor running, water heating, oil heating, take-up motor running.
Online since: September 2019
Authors: Bachir Merzoug, Yassine Djebbar, Abdelmoumene Guedri, Racim Boutelidja
In the piping of a boiling water reactor, the sensitive material near welds is the stainless steel.
(3) where O2 is the oxygen concentration (ppm), T the temperature in centigrade degrees, and γ is the water conductivity in (µs/cm).
The diverse professionals in the fields of finance, project management, energy, production, engineering, research and development, insurances, gas and oil industry, transportation and environment, have recourse to this technique.
Ford, "Prediction of Corrosion Fatigue Initiation in Low Alloy Steel and Carbon Steel/Water Systems at 2880C," Proceedings of Fourth International Symposium on Environmental Degradation in Nuclear Power Systems - Water Reactors, Jekyll Island, August 6-10, 1989.
Ohtomo, "Evaluation of the Factor of Improvement for the Intergranular Stress Corrosion cracking Life of Sensitized Stainless Steels in High-Temperature, High-Purity Water Environment," Journal of the Society of Materials Science of Japan,36, 59, 1987
(3) where O2 is the oxygen concentration (ppm), T the temperature in centigrade degrees, and γ is the water conductivity in (µs/cm).
The diverse professionals in the fields of finance, project management, energy, production, engineering, research and development, insurances, gas and oil industry, transportation and environment, have recourse to this technique.
Ford, "Prediction of Corrosion Fatigue Initiation in Low Alloy Steel and Carbon Steel/Water Systems at 2880C," Proceedings of Fourth International Symposium on Environmental Degradation in Nuclear Power Systems - Water Reactors, Jekyll Island, August 6-10, 1989.
Ohtomo, "Evaluation of the Factor of Improvement for the Intergranular Stress Corrosion cracking Life of Sensitized Stainless Steels in High-Temperature, High-Purity Water Environment," Journal of the Society of Materials Science of Japan,36, 59, 1987