BE Magazine - Volume 6, Issue 1 - (Page 31)

Best Practices – Metals and Mining so the challenge was to design the most compact plant layout possible while providing maintenance access and safe operation. “The Bentley suite of products provided a user-friendly means of delivering a complex 3D project,” said Glen Sakaki, Hatch’s project controls, procurement, and construction supervision. Central data storage enabled fast, accurate, and up-to-date information transfer between disciplines. Continuous redesign as information became available was undertaken with ingenuity and a collaborative approach by the entire project team. The 3D environment allowed the team to develop a compact layout, general arrangements, and isometric drawings by extraction; import terrain maps, structural steel, and concrete models; and produce integrated models for design reviews, presentations, and clash detection that saved 2 percent of construction costs in ﬁeld rework. managing director of project execution. “The 3D environment allowed us to produce integrated models for design reviews, presentations to clients, and clash detection. Without these capabilities, such a complex project would take longer to execute and require more staff for coordination, checking, and supervision.” Visualizing a compact design The chemical process used to extract gold from refractory sulphide ores liberates submicron-sized gold by oxidizing the sulphides with high-purity oxygen at a temperature of 230 degrees Celsius and a pressure of 40 atmospheres. The process takes place in four massive pressure vessels called autoclaves, each with a capacity of more than 600 m³ and a gross operating weight of 2,300 tons. The vessels are protected by a lead membrane and an acidresistant brick lining. Gas dispersion is done by seven agitators per vessel. Each vessel processes approximately 6,000 tons per day of ore feed, extracting 200,000 to 250,000 ounces of gold per annum. When constructed, these vessels will be the largest refractorylined autoclaves in the world. The use of PlantSpace and other Bentley products allowed all disciplines—civil, structural, mechanical, piping, electrical, and controls—to work simultaneously while sharing design information on a real-time basis. The design team included more than 55 engineers, designers, and specialists; ﬁve CAD systems and IT support personnel; and up to 50 members in management, Executing the plant design on schedule will enable the project owner to adhere to a timeline intended to take advantage of current high gold prices. Gold often rises in times of economic turmoil or when the U.S. dollar falls. Higher gold prices have outpaced the rising costs of gold production, according to Barrick’s second quarter report released July 31, 2008—when spot gold was priced at US$916 an ounce. Barrick estimated it will cost about $3 billion to bring the Pueblo Viejo mine to full production, with initial cash costs at the mine likely to be in the range of $275 to $300 an ounce, up from the previous estimate of $250 an ounce. Since Barrick is committed to bringing long-term sustainable beneﬁts to the communities in which it operates, the economic, social, and environmental beneﬁts of this large-scale project will come about as a result of Barrick’s commitment to operating in a socially responsible manner in the Dominican Republic. Barrick’s socially responsible mining approach includes local, regional, and national initiatives to improve education and infrastructure in the countries in which it operates. During the threeand-a-half year construction period, the Pueblo Viejo project is expected to create 3,500 jobs. Area bridges, highways, and overpasses will receive more than $20 million in upgrades as a result of the project. Volume 6 Issue 1 | Be Magazine 31 http://www.bentley.com/en-US/Products/Plant Design and Engineering/

Table of Contents Feed for the Digital Edition of BE Magazine - Volume 6, Issue 1

BE Magazine - Volume 6, Issue 1 Contents Anticipation’s Name Is V8i Be Awards of Excellence Kicks Off Competition Bentley Launches the Most Comprehensive SoftwarePortfolio for Infrastructure Ever Assembled in a Single Release MicroStation V8i Up Close & Personal Is Water the New Oil? How Does Intent Become Reality? Does Performance Create Sustainability? Renewing Confidence in Public Highway Infrastructure Enterprisewide System Manages International Airport Standardized CAD/GIS Platform Streamlines Infrastructure Engineering 3D Modeling Refines Reusable Design for Plant Prototype Lean Teams Deliver Automotive Assembly Plants Through Innovative Use of BIM Integrated 3DModels Enable Compact and Safe Plant Design Sustainable Development Supports Thriving Community Terminal Pumps Natural Gas Through Longest Subsea Pipeline Large UtilityWorks To Reduce SO2 Emissions Aging Power Station Boosts Engineering Productivity Hydropower Dam To Fuel Growing Economy Collaboration Tools Accelerate Chinese Railway Electrification System Design Rapid Rail Link To Meet Socio-Economic Development Goals High-CapacityWastewater Treatment Facility ReclaimsWater Resources City ExpandsWater SupplyWithout Deploying AdditionalWater Resources Private Calling Meets Public Service Learning Paths Map Skill Development for Infrastructure Professionals A Contemporary Approach to Site Design The Art of Visualization Special Feature: Be Communities Physical + Digital Investments = Intelligent Infrastructure

BE Magazine - Volume 6, Issue 1

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