Brazil's Dam Collapse Underscores Need for Improved Safety Standards
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A Wild Ride Foundations of a Company Coming of Age
What still stands is what we created. The dams, the roads, the bridges, the schemes, The idea of forming consortiums always struck me as a good one, as problems The more difficult projects in which I was involved required detailed attention by me. That wasn’t My boss asked if I would be interested in working in Africa and got me a job interview with A valley failed where a company was building a mining tailings dam in Papua New Guinea called Ok When I joined Klohn Leonoff, I brought a capability in rock mechanics and a background in tunnelling. The variety of clients and market sectors is a driver as to why I came back into consulting We realized in the early 2000s that we had to fundamentally change the culture of the company to survive. That meant teaching professional engineers and I have found KCB to be a company that values the “why.” Our focus is on understanding the problems and KCB is a purpose-driven enterprise. Our purpose is the application of engineering and science for the betterment of our world. We and all the construction did not disappear with the company. These structures show FOUNDATIONS OF A COMPANY could be ironed out around the Board table. When there were problems on site dictated by me—it was dictated by the projects. The concentration that was required on these projects METAMORPHOSES COMING OF AGE PROJECTS AND PROGRESS ONE CHAPTER CLOSES A NEW MILLENNIUM A WILD RIDE C.B.A. Engineering. Don Bazett hired me and sent me to be the dam engineer on the Hadejia Tedi. -
Flooding the Missouri Valley the Politics of Dam Site Selection and Design
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Great Plains Quarterly Great Plains Studies, Center for Summer 1997 Flooding The Missouri Valley The Politics Of Dam Site Selection And Design Robert Kelley Schneiders Texas Tech University Follow this and additional works at: https://digitalcommons.unl.edu/greatplainsquarterly Part of the Other International and Area Studies Commons Schneiders, Robert Kelley, "Flooding The Missouri Valley The Politics Of Dam Site Selection And Design" (1997). Great Plains Quarterly. 1954. https://digitalcommons.unl.edu/greatplainsquarterly/1954 This Article is brought to you for free and open access by the Great Plains Studies, Center for at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Great Plains Quarterly by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. FLOODING THE MISSOURI VALLEY THE POLITICS OF DAM SITE SELECTION AND DESIGN ROBERT KELLEY SCHNEIDERS In December 1944 the United States Con Dakota is 160 feet high and 10,700 feet long. gress passed a Rivers and Harbors Bill that The reservoir behind it stretches 140 miles authorized the construction of the Pick-Sloan north-northwest along the Missouri Valley. plan for Missouri River development. From Oahe Dam, near Pierre, South Dakota, sur 1946 to 1966, the United States Army Corps passes even Fort Randall Dam at 242 feet high of Engineers, with the assistance of private and 9300 feet long.! Oahe's reservoir stretches contractors, implemented much of that plan 250 miles upstream. The completion of Gar in the Missouri River Valley. In that twenty rison Dam in North Dakota, and Oahe, Big year period, five of the world's largest earthen Bend, Fort Randall, and Gavin's Point dams dams were built across the main-stem of the in South Dakota resulted in the innundation Missouri River in North and South Dakota. -
Policy for Dam Safety and Geotechnical Mining Structures
Policy for Dam Safety and Geotechnical Mining Structures DCA 108/2020 Rev.: 00 – 08/10/2020 Nº: POL-0037- G PUBLIC Objective: To establish guidance and commitments for the Safe Management of Dams and Geotechnical Mining Structures such that critical assets are controlled as well as to deal with the risk controls associated with the implemented Management Systems. Aplicação: This Policy applies to Vale and its 100% controlled subsidiaries. It must be reproduced for its direct and indirect subsidiaries, within Brazil and overseas, always in compliance to the articles of incorporation and the applicable legislation. Its adoption is encouraged at other entities in which Vale has a shareholding interest, in Brazil and overseas. References: • POL-0001-G – Code of Conduct • POL-0009-G – Risk Management Policy • POL-0019-G – Sustainability Policy • ABNT NBR ISO 9001:2015 – Sistema de Gestão da Qualidade (SGQ). • Technical Bulletin – Application of Dam Safety Guidelines to Mining Dams from the Canadian Dams Association (CDA). • Guidelines on Tailings Dams – Planning, Design, Construction, Operation and Closure from the Australian Committee on Large Dams (ANCOLD). • Tailings Dam Safety Bulletin from the International Committee on Large Dams (ICOLD). • Guide to the Management of Tailings Facilities & Developing an Operation, Maintenance, and Surveillance. • Manual for Tailings and Water Management Facilities (the OMS Guide) from the Mining Association of Canada (MAC). • Global Industry Standard on Tailings Management (GISTM) from the Global Tailings Review (ICMM-UNEP-PRI) & Tailings Management: Good Practice Guides from the International Council on Mining and Metals (ICMM). • Slope Design Guidelines for Large Open Pit Project (LOP) from the Commonwealth Scientific and Industrial Research Organization (CSIRO da Australia). -
Good and Bad Dams
Latin America and Caribbean Region 1 Sustainable Development Working Paper 16 Public Disclosure Authorized Good Dams and Bad Dams: Environmental Criteria for Site Selection of Hydroelectric Projects November 2003 Public Disclosure Authorized Public Disclosure Authorized George Ledec Public Disclosure Authorized Juan David Quintero The World Bank Latin America and Caribbean Region Environmentally and Socially Sustainable Development Department (LCSES) Latin America and the Caribbean Region Sustainable Development Working Paper No. 16 Good Dams and Bad Dams: Environmental Criteria for Site Selection of Hydroelectric Projects November 2003 George Ledec Juan David Quintero The World Bank Latin America and the Caribbean Region Environmentally and Socially Sustainable Development Sector Management Unit George Ledec has worked with the World Bank since 1982, and is presently Lead Ecologist for the Environmen- tally and Socially Sustainable Development Unit (LCSES) of the World Bank’s Latin America and Caribbean Re- gional Office. He specializes in the environmental assessment of development projects, with particular focus on biodiversity and related conservation concerns. He has worked extensively with the environmental aspects of dams, roads, oil and gas, forest management, and protected areas, and is one of the main authors of the World Bank’s Natural Habitats Policy. Dr. Ledec earned a Ph.D. in Wildland Resource Science from the University of California-Berkeley, a Masters in Public Affairs from Princeton University, and a Bachelors in Biology and Envi- ronmental Studies from Dartmouth College. Juan David Quintero joined the World Bank in 1993 and is presently Lead Environmental Specialist for LCSES and Coordinator of the Bank’s Latin America and Caribbean Quality Assurance Team, which monitors compli- ance with environmental and social safeguard policies. -
BHP “Extreme” Consequence Tailings Dams with Potential to Cause Fatality of 100 Employees
BHP “Extreme” consequence tailings dams with potential to cause fatality of 100 employees: Briefing Paper by David Noonan, Independent Environment Campaigner - 22 May 2020 BHP has Questions to answer on Worker Safety, Transparency and Accountability at Olympic Dam BHP took over Olympic Dam copper-uranium mine in 2005, operating the mine for a decade before a GHD “TSF Dam Break Safety Report”1 to BHP in August 2016 concluded all existing Tailings Storage Facilities (TSFs) are “Extreme” consequence tailings dams with a failure potential to cause the death of 100 BHP employees: “BHP OD has assessed the consequence category of the TSFs according to ANCOLD (2012a,b). A dam break study, which considered 16 breach scenarios of TSFs 1 to 5, was completed by GHD (2016) and indicated a potential for tailings and water flow into the mine’s backfill quarry and underground portal. The following conclusions were drawn: • The population at risk (PAR) for a TSF embankment breach is greater than 100 to less than 1000 mine personnel primarily as a result of the potential flow of tailings into the adjacent backfill quarry and entrance to the underground mine. • The financial cost to BHP OD for a tailings dam failure was assessed by BHP OD to be greater than US$1B, a “catastrophic” loss according to ANCOLD guidelines (2012a,b). Based on these criteria, the TSFs at Olympic Dam have been given a consequence category of “Extreme” to guide future assessments and designs. Note that this is an increase compared to the assessment prior to the FY16 Annual Safety Inspection and Review (Golder Associates, 2016a) which classified TSF 1-4 and TSF 5 as “High A” and “High B”, respectively. -
Be Aware of Potential Risk of Dam Failure in Your Community
Be Aware of Potential Risk of Dam Failure in Your Community Approximately 15,000 dams in the United States are classified as high-hazard potential (HHP), meaning that their failure could result in loss of life. Dams can fail for a number of reasons, including overtopping caused by floods, acts of sabotage, or structural failure of materials used in dam construction. The worst dam failure in the United States occurred in 1889 in Johnstown, Pennsylvania. Over 2,200 died, with many more left homeless. Dams present risks but they also provide many benefits, including irrigation, flood control, and recreation. Dams have been identified as a key resource of our national infrastructure that is vulnerable to terrorist attack. States have the primary responsibility for protecting their populations from dam failure. Of the approximately 94,400 dams in the United States, State governments regulate about 70 percent. About 27,000 dams throughout our Nation could incur damage or fail, resulting in significant property damage, lifeline disruption (utilities), business disruption, displacement of families from their homes, and environmental damage. The most important steps you can take to protect yourself from dam failure are to know your risk. Contact government offices to learn if an Emergency Action Plan (EAP) is in place and to evacuate when directed by emergency response officials. An EAP is a formal document that identifies potential emergency conditions at a dam and specifies preplanned actions to be followed by the dam owner to reduce property damage and loss of life. The plan may save lives and property damage through timely evacuations of those who live, work, or enjoy recreation near a high-hazard potential dam. -
Effects of the Glen Canyon Dam on Colorado River Temperature Dynamics
Effects of the Glen Canyon Dam on Colorado River Temperature Dynamics GEL 230 – Ecogeomorphology University of California, Davis Derek Roberts March 2nd, 2016 Abstract: At the upstream end of the Grand Canyon, the Glen Canyon Dam has changed the Colorado River from a run-of-the-river flow to a deep, summer-stratified reservoir. This change in flow regime significantly alters the temperature regime of the Colorado River. Seasonal temperature variation, once ranging from near to almost , is now limited to 7 . The lack of warm summer temperatures has prevented spawning of endangered 0℃ 30℃ humpback chub in the Colorado River. Implementation of a temperature control device, to − 14℃ allow for warmer summer releases to mitigate negative temperature effects on endangered fish, was considered by the federal government. Ultimately, this proposal was put on indefinite hold by the Bureau of Reclamation and U.S. Fish and Wildlife Service due to concerns of cost and unintended ecological consequences. The low-variability of the current dam-induced Colorado River temperature regime will continue into the foreseeable future. Agencies are reviewing humpback chub conservation efforts outside of temperature control. Keywords: Colorado River, Grand Canyon, Glen Canyon Dam, thermal dynamics 1.0 Introduction Temperature in natural water bodies is a primary driver of both ecological and physical processes. Freshwater plant and animal metabolisms are heavily affected by temperature (Coulter 2014). Furthermore, the thermal structure of a water body has significant impacts on the physical processes that drive ecosystem function (Hodges et al 2000); fluid dynamics drive transport of nutrients, oxygen, and heat. Human action, often the introduction of dams or industrial cooling systems, can alter the natural thermal regimes of rivers and lakes leading to reverberating impacts throughout associated ecosystems. -
Hydroelectric Power -- What Is It? It=S a Form of Energy … a Renewable Resource
INTRODUCTION Hydroelectric Power -- what is it? It=s a form of energy … a renewable resource. Hydropower provides about 96 percent of the renewable energy in the United States. Other renewable resources include geothermal, wave power, tidal power, wind power, and solar power. Hydroelectric powerplants do not use up resources to create electricity nor do they pollute the air, land, or water, as other powerplants may. Hydroelectric power has played an important part in the development of this Nation's electric power industry. Both small and large hydroelectric power developments were instrumental in the early expansion of the electric power industry. Hydroelectric power comes from flowing water … winter and spring runoff from mountain streams and clear lakes. Water, when it is falling by the force of gravity, can be used to turn turbines and generators that produce electricity. Hydroelectric power is important to our Nation. Growing populations and modern technologies require vast amounts of electricity for creating, building, and expanding. In the 1920's, hydroelectric plants supplied as much as 40 percent of the electric energy produced. Although the amount of energy produced by this means has steadily increased, the amount produced by other types of powerplants has increased at a faster rate and hydroelectric power presently supplies about 10 percent of the electrical generating capacity of the United States. Hydropower is an essential contributor in the national power grid because of its ability to respond quickly to rapidly varying loads or system disturbances, which base load plants with steam systems powered by combustion or nuclear processes cannot accommodate. Reclamation=s 58 powerplants throughout the Western United States produce an average of 42 billion kWh (kilowatt-hours) per year, enough to meet the residential needs of more than 14 million people. -
Blackstone State Park to Pratt Dam – Intermediate Tours, Rhode Island
BLACKSTONE RIVER & CANAL GUIDE Blackstone State Park to Pratt Dam – Intermediate Tours, Rhode Island [Map: USGS Pawtucket] Level . Intermediate Start . Ashton Dam / Lincoln Ashton Dam End . Lonsdale Village Portage River Miles Approx. 3 miles each way (6 mile loop) Ro River Time . 1 hour / 2 hour loop ut e 116 Access 0 miles Bikeway Description Quickwater, Class I-II (in river); II Flatwater (in canal) Parking Scenery . Towns, mills, wetlands 6 2 Portages. One portage from River to Canal for loop; portage over Pratt 1 Kelly House Bikeway Parking e Dam to continue downriver or take out t Transportation u o Museum Ashton Mill R Rout Blackstone Canal e 116 The heart of Rhode Island’s Blackstone River State Park, with a choice between the river and canal or a river to canal trail “loop”. Blackstone River State Park This section can be navigated either in the river or in the canal. Paddlers Blackstone can also make this a water trail loop by paddling down the Blackstone River River and back up the Blackstone Canal to the Kelly House Canal Quinnville d Ashton R oa Museum. o u R t r e e v 1 i NOTE: Currently (2005-06), construction at the Martin Street Bridge 26 R r e does not allow paddlers access through the canal. Check on the status of w o Martin L the construction before planning your trip. 1 Street Bridge RIVER ROUTE / RIVER AND CANAL TRAIL LOOP To put-in the Blackstone River, carry up the road under the viaduct Ma towards the dam where there is a portage trail to the right just past the rtin St R o pedestrian bridge or put-in just below the bikeway bridge behind the u t e Blackstone River State Park’s Kelly House Museum 1 2 2 The Wilbur Kelly House Museum describes the evolution of transportation M in the Blackstone River Valley, from primitive trails through the canal, the e n d railroad and on to modern highways. -
Tailings Facilities Disclosure: Response to the Church of England Pensions Board and the Council on Ethics Swedish National Pension Funds
BHP Tailings Facilities Disclosure Tailings Facilities Disclosure: Response to the Church of England Pensions Board and the Council on Ethics Swedish National Pension Funds 7 June 2019 In April 2019, the Church of England Pensions Board and the Council on Ethics Swedish National Pension Funds wrote to approximately 700 mining firms to request specific disclosures of their tailings facilities. This document contains the response of BHP and that of our Non-operated joint ventures to this request. This disclosure has been certified by BHP’s Chief Executive Officer, in line with this request. BHP Tailings Facilities Disclosure DISCLAIMER Forward-looking statements This document contains forward-looking statements, which may include statements regarding: trends in commodity prices and currency exchange rates; demand for commodities; plans, strategies and objectives of management; closure or divestment of certain operations or facilities (including associated costs); anticipated production or construction commencement dates; capital costs and scheduling; operating costs and shortages of materials and skilled employees; anticipated productive lives of projects, mines and facilities; provisions and contingent liabilities; tax and regulatory developments. Forward-looking statements can be identified by the use of terminology including, but not limited to, ‘intend’, ‘aim’, ‘project’, ‘anticipate’, ‘estimate’, ‘plan’, ‘believe’, ‘expect’, ‘may’, ‘should’, ‘will’, ‘continue’, ‘annualised’ or similar words. These statements discuss future expectations concerning the results of operations or financial condition, or provide other forward- looking statements. These forward-looking statements are not guarantees or predictions of future performance, and involve known and unknown risks, uncertainties and other factors, many of which are beyond our control, and which may cause actual results to differ materially from those expressed in the statements contained in this presentation. -
The Effects of Glen Canyon Dam on the Colorado River
THE EFFECTS OF GLEN CANYON DAM ON THE COLORADO RIVER. by Margaret Gebren A SENIOR THESIS m GENERAL STUDIES Submitted to the General Studies Council in the College of Arts and Sciences at Texas Tech University in Partial fulfillment of the Requirements for the Degree of BACHELOR OF GENERAL STUDIES Approved Dr. JeffLee Depal'tmenr of Economics and Geography Co-Chair of Thesis Committee Dr. Rob Mitchell Department of R WFM Co-Chair of Thesis Committee ----~~------- Dr. Dale Davis Director of General Studies May 1999 /ILZ ''55< ' / 7 3 ACKNOWLEDGMENTS I wish to express my deep gratitude to Dr. Lee and Dr. Mitchell for taking time out to read and critique my work and also for their commitment to teaching, which is greatly underrated. Thanks also to my family, for graciously correcting my grammar and spelling all these years! TABLE OF CONTENTS ACKNOWLEDGMENTS ii CHAPTER I. INTRODUCTION 1 II. HISTORY OF THE DAM 4 III. LIFE BEFORE THE DAM 7 IV. FORMATION OF THE GRAND CANYON 9 V. LIFE AFTER THE DAM 14 Lake Powell 14 Water Releases 15 Rapids 16 Sand and Sediment 16 Vegetation 17 Backwaters 18 Water Chemistry and Temperature 18 Heavy Metals 19 Salinity 20 Endangered Species 21 VI. THE PLAN 24 VII. THE EXPERIEMENT 27 VIII. RESULTS 30 Sandbars and Sediment Transportation 30 Rapids 31 ni Camping Beaches 31 Backwater Habitats 32 Geochemistry 33 Fisheries 33 Riparian Vegetation and Resources 34 Cultural Resources 34 IX. CONCLUSIONS 35 BIBLIOGRAPHY 36 IV CHAPTER 1 INTRODUCTION Mankind has become so used to controlling nature that we often forget or over-look the consequences of our handiwork. -
Deep Into the Mud: Ecological and Socio-Economic Impacts of the Dam
n a t u r e z a & c o n s e r v a ç ã o 1 4 (2 0 1 6) 35–45 Natureza & Conservação Brazilian Journal of Nature Conservation Supported by Boticário Group Foundation for Nature Protection http:/ /www.naturezaeconservacao.com.br Essays and Perspectives Deep into the mud: ecological and socio-economic impacts of the dam breach in Mariana, Brazil a,b,∗ c d Geraldo Wilson Fernandes , Fernando F. Goulart , Bernardo D. Ranieri , a,e f g h Marcel S. Coelho , Kirsten Dales , Nina Boesche , Mercedes Bustamante , a i b j Felipe A. Carvalho , Daniel C. Carvalho , Rodolfo Dirzo , Stephannie Fernandes , b,k g g k Pedro M. Galetti Jr. , Virginia E. Garcia Millan , Christian Mielke , Jorge L. Ramirez , a g l m c Ana Neves , Christian Rogass , Sérvio P. Ribeiro , Aldicir Scariot , Britaldo Soares-Filho a Evolutionary Ecology & Biodiversity, Department of General Biology, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil b Department of Biology, Stanford University, Stanford, United States c Master in Modeling and Analysis of Environmental Systems, Center for Remote Sensing, Department of Cartography, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil d Norman B. Keevil Institute of Mining Engineering, University of British Columbia, Vancouver, Canada e Laboratory of Phenology, Department of Botany, Instituto de Biociências (IB), Universidade Estadual Paulista (UNESP), Rio Claro, SP, Brazil f Canadian International Resources & Development Institute, University of British Columbia, Vancouver, Canada g Helmholtz