Download or read book Best Practice Guidance for Effective Management of Coal Mine Methane at National Level written by United Nations Publications and published by . This book was released on 2022-04 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: While Methane (CH4) is the second most prevalent anthropogenic greenhouse gas (GHG) after carbon dioxide (CO2), the Global Warming Potential (GWP) of the former is 28-34 times higher than that of the latter. Coal mining is a major source of methane emissions, accounting for about 12% of global total anthropogenic emissions of that gas. Most emissions come from underground working mines, but those from abandoned mines are raising. Action on methane requires a solid understanding of emission sources at national, subnational, and local levels. Only with reliable emissions data, can policymakers design effective GHG policies, evaluate mitigation opportunities, and comply with their international climate commitments. National monitoring, reporting, and verification (MRV) programs can not only help countries better understand the contribution of coal mining to their overall methane and GHG emissions, but also identify opportunities for mitigation. In particular, MRV can help assess and track the effectiveness of the adopted climate policies. Setting up efficient MRV schemes is also important to deliver on international climate commitments in the context of the Paris Agreement.
Download or read book Best Practice Guidance for Effective Management of Coal Mine Methane at National Level written by and published by . This book was released on 2021 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Best Practice Guidance for Effective Methane Drainage and Use in Coal Mines written by United Nations. Economic Commission for Europe and published by United Nations Publications. This book was released on 2010 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal mines are not only a safety management challenge but also a major source of greenhouse gas emissions. Methane release during coal mining creates unsafe working conditions in underground coal mines around the world. This Guidance is intended to provide a genuine contribution to improve mine safety practices at active underground coal mines, by supporting safer mining practices to reduce fatalities, injuries, and property losses, while encouraging the use of coal mine methane (CMM) to reduce greenhouse gas emissions and utilize otherwise - wasted energy resources.
Download or read book Best Practice Guidance for Effective Methane Drainage and Use in Coal Mines written by United Nations Publications and published by UN. This book was released on 2016 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today coal supplies around 30 per cent of global primary energy and 40 per cent of global electricity. Coal extraction has become increasingly challenging as shallow reserves are exhausted and deeper seams, with significant content of methane, are mined. Societies are demanding and expecting safer mine working conditions, and greater environmental stewardship from the coal industry. The global coal industry, national governments, trade unions, and worker safety advocates are concerned that the frequency and severity of methane explosions, especially in emerging economies, are unacceptably high. Coal mine methane (CMM) only becomes flammable and creates an explosion hazard when allowed to mix with air. Methane-rich gases, generally containing 80 per cent to 95 per cent methane at underground mining depths, occur naturally in coal seams and are released as CMM when coal seams are disturbed by mining activities. Methane is an explosive gas in the range of 5 per cent to 15 per cent methane in air. The application of best practices for methane drainage and use is critical to reduce methane-related accidents and explosions that all too often accompany coal mining, while also contributing to environmental protection through reduction of greenhouse gas (GHG) emissions. Good mining practices need to be transferred to all countries to ensure that risks are managed professionally and effectively. No mine, even in the most developed countries, is free from safety risks. Regardless of location or mining conditions, it is possible to significantly reduce the risk of methane related incidents and explosions. Good safety practice in coal mines is to reduce explosion risk by preventing the occurrence of explosive mixtures and, where practical, by monitoring and rapidly diluting explosive mixtures to safe concentrations.
Download or read book Best Practice Guidance for Effective Methane Recovery and Use from Abandoned Coal Mines written by United Nations Publications and published by . This book was released on 2020-04-13 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal production, transportation, storage and use account for roughly 40% of global greenhouse gas emissions. Methane, which is a potent greenhouse gas with a 100-year global warming potential 25 times that of carbon dioxide (CO2) and a 100-year global temperature potential 6-fold greater than CO2, once released from coal seams in which it is trapped creates number of problems even after cessation of mining activities. Following mine closure, methane emissions decrease, but do not stop completely. They initially decline, but can later stabilize and maintain a near-constant rate for an extended period of time. The document presents recommended principles and standards for effective methane recovery and use from abandoned coal mines in a clear and succinct way, providing decision-makers with a solid base of understanding from which to direct policy and commercial decisions. The Best Practice Guidance does not replace or supersede laws and regulations or other legally binding instruments, whether national or international. The principles outlined therein are intended to complement existing legal and regulatory frameworks and to support development of safer and more effective practices where industry practice and regulation continue to evolve. At the same time, being envisioned primarily as a tool to support performance- and principle-based regulatory programmes, the Best Practice Guidance can also complement more prescriptive regulation and support transition to performance-based regulation.
Download or read book Best Practice Guidance for Effective Methane Management in the Oil and Gas Sector written by United Nations Publications and published by . This book was released on 2022-09-07 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The document provides guidance for developing and implementing effective practices for monitoring, reporting and verifying (MRV) methane emissions from the oil and gas sector. It also provides guidance on remediation practices. The document is meant to serve as a resource for a broad audience, including owners and operators of oil and gas facilities and policymakers at all levels of government. Its discussion of MRV and mitigation opportunities is intentionally "principles-based", recognizing that conditions vary greatly across oil and gas facilities and that legal, political and institutional aspects differ by jurisdiction. The oil and gas industries are important sources of anthropogenic methane emissions and, though methane has a relatively short residence time in the atmosphere, its volumes are replenished continuously. Methane, the primary component of natural gas, can be released to the atmosphere during oil and gas production, processing, storage, transmission, distribution, and use. Because methane has a much higher warming potential than CO2, effective management is important for countries' climate change mitigation strategies and is one of the few approaches that represents a significant, cost-effective, and near-term opportunity. Oil and gas will play a key role in the future sustainable energy system even under a scenario that meets stringent climate objectives - the sector will continue to support economic growth and social progress as alternatives to oil and gas will take time to emerge and achieve global scale. Addressing the methane challenge will improve the sector's sustainability credentials."--Publisher's description.
Download or read book Best Practice Guidance for Effective Methane Drainage and Use in Coal Mines Second Edition written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Best Practice Guidance for Effective Methane Management in the Oil and Gas Sector written by Vereinte Nationen Wirtschaftskommission für Europa and published by . This book was released on 2020 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: Executive Summary -- Monitoring, reporting and verification (MRV) -- Acronyms and Abbreviations -- Mitigation -- References -- Foreword -- Conclusions and summary for policy makers -- Introduction -- Emission source categories along the value chain -- Acknowledgements -- Methane emissions in the oil and gas industry -- Mature detection and quantification technologies -- Glossary and Terms.
Download or read book Guidelines for the Control and Monitoring of Methane Gas on Continuous Mining Operations written by Department of Health and Human Services and published by CreateSpace. This book was released on 2013-10 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until the early 1980s, mine face ventilation systems were designed for ventilating cutting depths up to 20 feet. Since that time, use of remotely operated mining machines have allowed cutting depths to increase to 40 ft, increasing concerns about the effects on methane levels at the mine face area. The principles for efficient methane control during deeper cutting remained the same, namely • Move a sufficient quantity of intake air from the end of the tubing or curtain to the face. • Mix intake air with methane gas liberated at the face. • Move methane contaminated air away from the face. However, when cutting to depths greater than 20 ft (known as deep-cut mining), airflow quantities reaching the face area often decreased because it was difficult to maintain tubing or brattice setback distances. Earlier research showed that use of machine-mounted scrubbers and water sprays increased airflow at the face area during deep cutting. NIOSH research examined how these and other factors affected face airflow. A full-scale ventilation test gallery was used to study how different operating conditions caused airflow patterns and methane distributions near the face to vary. The research results showed that during deep-cut mining • Without additional controls, only a small percentage of the air delivered to the end of the tubing or curtain reached the face area. • Operation of a machine-mounted scrubber increased airflow and reduced methane levels at the face area as long as the quantity of intake air delivered to the end of the curtain or tubing was not reduced. • Operation of water sprays did not significantly increase the volume of air reaching the face but did improve mixing of methane and intake air at the face. Methane monitoring requirements remained the same for deep cutting, but the possibility of rapidly changing conditions at the face increases the need for accurate estimates of face methane concentration. Research examined currently available instrumentation and sampling methods for monitoring methane at the face. In this report several practical guidelines are recommended for controlling and monitoring methane levels in the face areas of underground coal mines.
Download or read book Best Practice Guidance for Effective Methane Recovery and Use from Abandoned Coal Mines written by and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guidelines for the Control and Monitoring of Methane Gas on Continuous Mining Operations written by Charles Darrell Taylor and published by Createspace Independent Pub. This book was released on 2010-04-30 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Until the early 1980s, mine face ventilation systems were designed for ventilating cutting depths up to 20 feet. Since that time, use of remotely operated mining machines have allowed cutting depths to increase to 40 ft, increasing concerns about the effects on methane levels at the mine face area. The principles for efficient methane control during deeper cutting remained the same, namely: 1. Move a sufficient quantity of intake air from the end of the tubing or curtain to the face. 2. Mix intake air with methane gas liberated at the face. 3. Move methane contaminated air away from the face. However, when cutting to depths greater than 20 ft (known as deep-cut mining), airflow quantities reaching the face area often decreased because it was difficult to maintain tubing or brattice setback distances. Earlier research showed that use of machine-mounted scrubbers and water sprays increased airflow at the face area during deep cutting. NIOSH research examined how these and other factors affected face airflow. A full-scale ventilation test gallery was used to study how different operating conditions caused airflow patterns and methane distributions near the face to vary. The research results showed that during deep-cut mining: 1. Without additional controls, only a small percentage of the air delivered to the end of the tubing or curtain reached the face area. 2. Operation of a machine-mounted scrubber increased airflow and reduced methane levels at the face area as long as the quantity of intake air delivered to the end of the curtain or tubing was not reduced. 3. Operation of water sprays did not significantly increase the volume of air reaching the face but did improve mixing of methane and intake air at the face. Methane monitoring requirements remained the same for deep cutting, but the possibility of rapidly changing conditions at the face increases the need for accurate estimates of face methane concentration. Research examined currently available instrumentation and sampling methods for monitoring methane at the face. The results from this NIOSH research program demonstrate how existing and new engineering controls can be used to (educe face methane levels. The sampling methods that were investigated can provide better ways to measure methane levels near the front of the continuous mining machine. In this report several practical guidelines are recommended for controlling and monitoring methane levels in the face areas of underground coal mines. Most of the recommendations were based on studies conducted in the NIOSH ventilation test gallery. 1. Free-standing fans can be used to ventilate empty headings in coal mines; a) The fan nozzle should be designed to provide maximum throw distance. b) Recirculation should be minimized by proper placement of fan inlet and or by placing curtains partway across the entry. 2. With blowing systems, the single most important factor on face methane dilution is the velocity of the air directed toward the face; a) For the same airflows, use of tubing rather than a curtain usually provides better control of face methane, especially at longer setback distances. 3. With blowing and exhausting systems, and with the mining machine at the face, use of scrubbers increases the amount of intake airflow reaching the mining face; a) Scrubber and spray systems should be designed to achieve efficient face ventilation for the effective removal of gas from the face. 4. Measurement of airflow speed and direction between the curtain and the face helps to predict methane concentrations in the face area; a) In empty entries, airflow velocity is much lower in narrower entries. More airflow should be provided during box cuts to prevent higher methane levels. 5. Regardless of intake flow quantity, increasing scrubber flow will reduce face methane levels if recirculation is controlled. Recirculation can be controlled by; a) Minimizing leakage around the ventilation curtain; b) Directing scrubber exhaust away from the blowing curtain. With exhaust systems the mouth of the curtain should always be outby the scrubber exhaust. 6. Water sprays on the mining machine should be directed to provide the best airflow across the entire face. 7. Methanometer response times can be measured using either of two techniques developed by NIOSH. Instruments with shorter response times more accurately measure current methane levels. Dust cap design has the greatest effect on response times; a) When selecting a methanometer the dust cap design should be examined. The cap should protect the methane sensor from dust and water but not significantly increase the response time. 8.Alternative methane sampling locations on the mining machine should be compared and selected based on the relative protection provided to the face workers. 9. Mine personnel should be provided with methane monitors that can be worn while working in areas that cannot be regularly monitored. Audible, visual, and vibratory alarms for the monitors should be evaluated based on the environment in which the instruments are used. 10. Miners must be safely removed from a mine without exposure to excessive methane following stoppage of a main fan; a) Mines should be evaluated for the most likely area where methane gas can accumulate following stoppage of a main mine fan. 11. In areas between the mouth of the ventilation curtain and the face, airflow direction is constantly changing and it is difficult to accurately measure flow velocity with a single-axis anemometer (e.g., a vane anemometer); a) Following approval for underground use, multi-axis anemometers should be used to monitor airflow direction and velocity between the mouth of the ventilation curtain or tubing and the face. Multi-axis instruments should also be used to monitor flow at locations outby the mining face. 12. During roof bolting, if it is not practical to monitor methane levels at the mining face, methane levels should be measured with a bolter machine-mounted monitor and a detector held 16 ft inby the last row of bolts using a extensible pole." - NIOSHTIC-2
Download or read book Methane Management in Underground Coal Mines Best Practice and Recommendations written by Department of Natural Resources, Mines and Energy and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coal written by National Research Council and published by National Academies Press. This book was released on 2007-12-21 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal will continue to provide a major portion of energy requirements in the United States for at least the next several decades. It is imperative that accurate information describing the amount, location, and quality of the coal resources and reserves be available to fulfill energy needs. It is also important that the United States extract its coal resources efficiently, safely, and in an environmentally responsible manner. A renewed focus on federal support for coal-related research, coordinated across agencies and with the active participation of the states and industrial sector, is a critical element for each of these requirements. Coal focuses on the research and development needs and priorities in the areas of coal resource and reserve assessments, coal mining and processing, transportation of coal and coal products, and coal utilization.
Download or read book Advances in Productive Safe and Responsible Coal Mining written by Joseph Hirschi and published by Woodhead Publishing. This book was released on 2018-08-18 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Productive, Safe, and Responsible Coal Mining covers the latest advancements in coal mining technology and practices. It gives a comprehensive introduction to the latest research and technology developments, addressing problems and issues currently being faced, and is a valuable resource of complied technical information on the latest coal mining safety and health research. As coal's staying power has been at the forefront of the world’s energy mix for more than a century, this book explores critical issues affecting coal mining, including how to maintain low-cost productivity, address health and safety hazards, and how to be responsible environmental stewards. This book takes a holistic approach in addressing each issue from the perspective of its impact on the coal mining operation and industry as a whole. Explains how to effectively produce coal within existing environmental constraints Encapsulates the latest health and safety research and technological advances in the coal mining industry Written by authors who have developed the latest technology for coal mines
Download or read book A Strategy for Coal Bed Methane and Coal Mine Methane Development and Utilization in China written by Energy Sector Management Assistance Program and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: China is short of clean energy, particularly conventional natural gas. The proven per capital natural gas reserve is only 1/12th of the world average. However, China has large coal bed methane (CBM) resources with development potential which can be recovered from surface boreholes independent of mining and in advance of mining, and also captured as a part of underground coal mining operations. However, in order to meet its targets, the government must improve the administrative framework for CBM resource management, introduce more effective CBM or coal mine methane (CMM) development incentives, raise the technical capacity of the mining sector, expand gas pipeline infrastructure and promote gas markets in coal mining areas. In order to significantly reduce methane emission from coal mines and better exploit the gas recoverable from coal seams, the government should introduce measures to: strengthen the CBM/CMM policy, legal and regulatory framework to improve resource management; improve CMM availability and quality so more can be utilized; enhance incentives to promote expansion of CBM/CMM exploitation and destruction of surplus drained CMM; and Promote development of regional development strategies to take advantage of specific local advantages.
Download or read book The Greenhouse Gas Protocol written by and published by World Business Pub.. This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The GHG Protocol Corporate Accounting and Reporting Standard helps companies and other organizations to identify, calculate, and report GHG emissions. It is designed to set the standard for accurate, complete, consistent, relevant and transparent accounting and reporting of GHG emissions.
Download or read book Improving Characterization of Anthropogenic Methane Emissions in the United States written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2018-08-25 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding, quantifying, and tracking atmospheric methane and emissions is essential for addressing concerns and informing decisions that affect the climate, economy, and human health and safety. Atmospheric methane is a potent greenhouse gas (GHG) that contributes to global warming. While carbon dioxide is by far the dominant cause of the rise in global average temperatures, methane also plays a significant role because it absorbs more energy per unit mass than carbon dioxide does, giving it a disproportionately large effect on global radiative forcing. In addition to contributing to climate change, methane also affects human health as a precursor to ozone pollution in the lower atmosphere. Improving Characterization of Anthropogenic Methane Emissions in the United States summarizes the current state of understanding of methane emissions sources and the measurement approaches and evaluates opportunities for methodological and inventory development improvements. This report will inform future research agendas of various U.S. agencies, including NOAA, the EPA, the DOE, NASA, the U.S. Department of Agriculture (USDA), and the National Science Foundation (NSF).
