longwall hydraulic system safety
® customized systems for longwall mining range from hydraulic roof supports and automated plow systems to shearers, ... ® customized systems for longwall mining range from hydraulic roof supports and automated plow systems to shearers, face conveyors and roof support carriers. ... Underground - Longwall.
Longwall Hydraulics is the agent for the Australian sales and distribution of Weinhold Pipe. Weinhold is a family owned business based in Neuss Germany. The Weinhold pipe has significant safety, economic and performance advantages over comparable hose systems and has many applications for use in longwall mining and other industries.
Nov 14, 2014· Longwall mining demands safety and reliability in equipment. ... In this mining system, hydraulic power is required for a range of equipment – including roof support structures – and it must ...
Recommended for high-pressure hydraulic lines in longwall mining equipment and roof-support systems; petroleum-based or water emulsion ﬂuids. Four spiral wire construction with static and dynamic pressure ratings listed on the hose. Couplings: GS (-8, -12, -16, -20) GSP (-24 and -32). Superior to SAE and ISO Specifications. Dynamic working pressure means frequent pressure surges.
Longwall automation benefits in underground mining go beyond increased production. Longwall system automation is moving toward full gate end automation, teleremote operation and, ultimately, fully autonomous operation. That means increased safety and efficiency as well.
Unless you are bleeding the hydraulic system, do not run the machine engine when you are servicing the system. Hydraulic fluid can be extremely hot and can cause severe burns, so let the hydraulic system cool before changing lines, connections, filters, or fittings.
Longwall Hydraulics provides an overhaul service for our pumps, pump stations, monorail systems and other components and have the capacity to perform complete or partial overhauls, based on equipment condition, within time frames to minimise costs and potential equipment down times.
Longwall hydraulic system over-pressurised . INCIDENT A longwall hydraulic system became over-pressurised, resulting in the catastrophic failure of hydraulic isolation valves and other fittings in the pump station. These failures released fluid under high pressure. While no person was injured, the uncontrolled release of high pressure fluid in
As an innovative system supplier for filtration technology, Seebach and Longwall Hydraulics are your perfect partner. Water filters, high-pressure filters, downstream filters and by pass filters, as well as last-chance filters and inline filters by Seebach ensure the necessary cleanliness of the operating medium in sensitive hydraulic circuits.
ports on each leg support cylinder, the hydraulic system depressurized, causing the shield's canopy to collapse (see the drawing in Appendix B). MSHA Technical Support determined there were no defects in the design or function of longwall shield 171. Accident Site Observations The accident occurred on the 17 East Longwall Panel set-up face.
Longwall Hydraulics Project Team consists of experienced professional engineering and management staff with proven design-technical abilities coupled with strong quality and safety ethics. The team manages Pump Station and Monorail Projects to ensure they are delivered to our customer's expectations, on time and within budget.
Hydraulic Hoses Alert Recently, a miner was seriously injured when he opened a filter backflush valve for a longwall shield hydraulic system. The discharge end of the backflush hose was installed through a hole in the stageloader cover plate without being securely fastened. 15 Kb: Hydraulic Hose Safety
The movable hydraulic shields in longwall mines advance with the shearer throughout the mining process, enabling increased productivity as well as improved safety for miners. Safety is imperative in the mining industry, particularly when it comes to the dangers of roof falls and lack of clean air in underground coal mines.
This system uses a range of data supplied from equipment used in the process of continuous longwall mining and uses it to calculate the changes in demand for hydraulic fluid before they occur. In this way ODIN can modulate the pump speed and change the flow and pressure characteristics to meet demand in the most responsive way possible.
Hauhinco designs complete water hydraulic systems for underground longwall mining and industrial applications. Hauhinco high-pressure stations for longwall hydraulics are premium, certified systems with all the necessary approvals.
The PMC-R electro-hydraulic longwall face control system represents the cutting edge in longwall automation technology and facilitates full automation, monitoring and remote diagnostics for all face equipment. All information can be transferred to the surface in real time to allow maximization of longwall performance. Control System Benefits:
Longwall mining has traditionally been a manual process in which alignment of the face equipment was done with string lines. Technologies have been developed which automates several aspects of the longwall mining operation, including a system that aligns the face of the retreating longwall panel perpendicularly to the gate-roads.
Mining Safety Solutions and Expertise at Longwall USA 2017. June 6, 2017 at 10:00 AM EDT ... Storm water systems, tunnels, manholes, and underground vaults ... Quaker's dust suppressants, ground control agents, and entire mining portfolio ranging from fire-resistant longwall hydraulic fluids, greases, gear lubricants, and cleaners ...
Oct 18, 2016· is one of the leading global suppliers for complete longwall mining systems. All over the world, ® equipment and systems are meeting the …
Mine personnel reported that the longwall mining system used approximately a 97% water – 3% hydraulic fluid emulsion in the system's hydraulic circuit. Three pumps provided hydraulic pressure. One pump's relief valve was reportedly set at 4500 psi (pounds per square inch), the second at 4300 psi, and the third was set at 4100 psi.
Longwall Pump Stations. ... transportable pods or even suspended from the monorail system; they typically incorporate the following services: ... Each system is designed and manufactured to achieve the highest levels of quality with a strong focus on safety, efficiency and reliability. Each system has the following integrated minimum features:
the-art longwall shields, but typically are not analyzed to evaluate shield performance. The National Institute for Occupational Safety and Health (NIOSH) Shield Hydraulics Inspection and Evaluation of Leg Data (SHIELD) program is a Visual Basic software system that is designed to analyze leg pressure data and identify shields that are
NSW MDG 41 - Guideline for Fluid Power System Safety at Mines is a valuable reference tool for developing site management plans and strategies. This project is part of an ongoing ACARP research program aiming to assist the industry in risk management of longwall hydraulic system uncontrolled release of high pressure fluids.
The control system for longwall mining technology consists of three parts. In the aboveground part of the mine there is a central computer, a Surface Monitoring System (SMS) intended for remote monitoring and administration of the equipment located underground. In the main gallery near the longwall (usually
Quick Facts Popular hydraulic systems must store fluid under high pressure. Three kinds of hazards exist: burns from the hot, high pressure spray of fluid; bruises, cuts or abrasions from flailing hydraulic lines and hydraulic injection of fluid into the skin. Safe hydraulic system performance requ
• Explain safety points and pre and post startup checks as well as pre-shutdown checks on a coal clearance system. • Identify and describe basic electrical components used in the Coal Clearance System on a Longwall • Identify the main mechanical and hydraulic features of …
Underground - Longwall. ® customized systems for longwall mining range from hydraulic roof supports and automated plow systems to shearers, face conveyors and roof support carriers. ... ® customized systems for longwall mining range from hydraulic roof supports and automated plow systems to shearers, face conveyors and roof support ...
The PMC-R electro-hydraulic longwall face control system represents the cutting edge in longwall automation technology and facilitates full automation, monitoring and remote diagnostics for all face equipment. All information can be transferred to the surface in real time to allow maximization of longwall …
William Bonner, Longwall Foreman, held a safety meeting with the longwall set-up crew. Donnie Tisdale, General Inside Laborer, and Brandon Wright, Longwall Mechanic, were assigned to work with Qian and Liang. While Tisdale and Wright gathered hand tools, Qian and Liang walked to the set-up face with Jack Rexrode, Maintenance Foreman.
In order to guarantee this, even in different operating states and with changing consumption requirements, the design must ensure that the high-pressure pump and valve systems are compatible. Depending on the application, directional-control valves, pressure-control valves, by-pass valves, as well as safety valves, are used.
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