Henderson DUSEL Conceptual Design Mark Kuchta Minin

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Henderson DUSEL Conceptual Design

• Mark Kuchta
• Mining Engineering Department
• Colorado School of Mines
• Lee Petersen, CNA Consulting Engineers
• Greg Hulne, Miller Dunwiddie Architects
• Dale Holland, Dunham Associates
• John Jenkins, ILF
• Craig Covil, ARUP

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Engineering Design Team
Colorado School of Mines Mark Kuchta,
Scott Kieffer, (Mining Engineering, Geotechnical
Engineering) Henderson Mine
Chip deWolfe, Staff (Mining Engineering,
Safety) CNA Consulting Engineers Lee
Petersen (Engineering Team Leader, Civil
Engineering) Dunham Associates
Dale Holland (Mechanical/Electrical
Engineering) Miller Dunwiddie Architecture Greg
Hulne (Architect) ILF Consultants
John Jenkins (Internal Shaft Design) ARUP (Cost
review, construction management plan)
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Conceptual Design Overview

• Shared Mine Infrastructure
• Mine Services Summary
• Rock Conditions
• DUSEL Access Ramps
• Campus Layouts (Upper, Central, Lower, Outposts)
• Development Sequence
• System Design
• Fire and Life Safety Concepts and Code Review
• Surface Facilities

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Shared Mine Infrastructure

• Overriding design criteria
• Safety
• Share infrastructure that is of benefit to share
• Keep the DUSEL and mine operations as separate as
  possible

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Site Overview
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Shared Mine Infrastructure

• Ventilation
• 150,000 cfm available for DUSEL
• Electricity
• 14 MW with 14MW backup available for DUSEL.
• Mine Dewatering
• About 3000 gpm pumping capacity available for
  DUSEL
• DUSEL estimated need 500 gpm
• URAD Water Treatment
• About 2000 gpm in excess capacity available for
  DUSEL

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Shaft Schedule Man Cage

• Double Deck Man Cage
• Capacity 100 people
• Overall availability about 93.5
• Normally available 24/7
• Service Cage
• Capacity 100 People
• 30 Ton capacity
• Sling 50 tons with crosshead
• Cage 23 ft. long X 8.5 ft
• Wide X 13 ft high

• Can move DUSEL supplies at 1140 tons/week to 7500
  tons/week depending on shift schedule used.
• (SNOLab 336 tons/week)

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Rock Handling System
80 ton trucks dump rock at crusher. Gyratory
crusher reduces to 4 in. 1 mile PC1 and 10.5
mile long PC2 underground conveyors. 4 mile long
PC3 surface conveyor to mill site.

• 40,000 tons per day capacity
• Mine currently producing about 30,000 tons per
  day
• Maximum planned DUSEL production 3,000 tons per
  day
• DUSEL rock will be dumped at the crusher on the
  7065 level,
• A fee (/ton) will be charged for rock removal

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Henderson DUSEL Layout
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RQD DUSEL Exploration Hole 001
Section
Average RQD 92 (Very Good) Three lt 10 ft
fracture zones
Plan
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Henderson DUSEL Central Campus Access
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Access Ramps
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Ramps
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Internal Shaft (winze) Top at Central Campus

• 20 ft diameter
• Concrete lined
• Capacity 5 ton
• Capacity 20 people
• Sink top down
• Keep sinking bucket for hoisting Lower Campus
  excavation rock

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Shaft Cross Section
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Access Ramp Cross Sections
Muck Haulage
Shipping Container
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Upper Campus Layout
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Upper Campus Layout
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Central Lower Campus Isometric
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Central Lower Campus Building Blocks
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Central Campus Layout
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Central Campus Layout w/ Large Multi-Purpose
Detector
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Lower Campus
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Infrastructure Design Life Criteria

• Suggested initial design life (capacity only)
• Lab life50? years
• Drift cross sectionsized for full expansion
• Duct size20 years
• Power conductors20 years
• Power transformers10 years
• Chiller piping20 years
• Chiller plant10 years
• Communications10 years

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Lab vs. Infrastructure Development Plan
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Development Sequence
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Fire Life Safety Concept
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Lower Campus FLS Provisions
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Lower Campus FLS Provisions
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Fire Life Safety Next Steps

• Meeting with MSHA and OSHA Regional offices on
  March 30, 2006
• Meeting with Clear Creek County building code
  officials on March 31, 2006
• ObjectiveMOU defining jurisdictions, codes, etc.

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Henderson DUSEL System Design

• Ventilation System
• Electrical System
• Incl. redundant, backup and emergency systems
• Fire and Life Safety
• Compartmentalization
• Monitoring alarm
• Fire suppression
• Fire separations
• Egress routes exit indicators
• Security stations
• Refuge Chambers
• Evacuation Routes

• Water Wastewater Systems
• Data Systems
• Personnel control
• Control room w/ CCTV
• Cameras
• Personnel monitors
• Paging system
• Emergency rescue systems
• Ambulance fire truck
• Emergency cabinets
• Blast doors

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System Conceptual Design

• Basic services
• Provided to occupied Upper, Central and Lower
  campus areas
• Power, air, potable water, fiber communications,
  lighting, emergency safety systems and selected
  drainage
• Ventilation systems
• Provided to Upper, Central Lower Campuses
• Basic normal and emergency ventilation
• Distribution systems
• Central services
• Terminate at the experiment caverns for tenant
  connections
• Fresh air, chilled water, power, process piping,
  communications, and safety systems

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Ventilation Cooling Design Criteria

• Virgin rock surface temperatures
• 90F at upper campus
• 107F at central campus
• 142F at lower campus
• Projection of bore hole temperature readings
• Heat transfer coefficient
• 0.098 Btu / hr-ft2 -F after 720 days
• Based upon published data
• Mine ventilation air
• Supplied to the central campus at 78F

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Ventilation Systems

• Access egress tunnel ventilation
• Normal Upper, Central Lower campus ventilation
• Interconnecting drifts ventilated using mine air
  (no A.C.)
• Caverns have conditioned air (chilled water
  coils, electric heating coils to control
  humidity, filtration)
• Clean space ventilation system
• Safety ventilation systems
• Compartmentalization smoke ventilation
• Smothering gas ventilation
• Central exhaust system
• Special exhaust system
• Special process exhaust, toilets, flammable
  liquid, etc.
• 10,000 cfm each at Central Lower Campus

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Cooling

• Each campus will have a chilled water loop
• Estimated Immediate Cooling Load
• Upper Campus 25 Tons
• Central Campus 85 Tons
• Lower Campus 175 Tons
• Estimated Future Cooling Load
• Upper Campus 90 Tons
• Central Campus 395 Tons
• Lower Campus 430 Tons

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Plumbing

• Water systems
• Potable via bottles
• Non potable from mine system, stored in tanks
• Sanitary waste
• Lift station to a holding tank, periodic transfer
  to surface
• Gray water
• 500 gpm total flow
• Sumps at Central, Midway and Lower Campus
• Pumped into the Henderson mine water system

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Process Utilities Fire Protection System

• Process utilities
• Central nitrogen gas system
• Compressed gas system
• Clean dry compressed air
• Cryogen relief
• De-ionized water system
• Fire protection system
• Each campus will have a wet pipe sprinkler system
• Drift standpipe systems
• Fire protection water storage tanks

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Lighting

• Normal lighting
• Caverns 30 foot-candles (either metal halide or
  fluorescent depending upon height)
• Office, lunch, shops at 50 fc
• Miscellaneous at 20 fc
• Egress routes at 1 fc
• Emergency lighting

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Power

• New feed from the surface at 13,800 V
• Unit substations at each campus
• 277/480V for lighting power to mechanical
  systems
• 120/208V for receptacles
• Demand
• All campuses, immediate 2975 kVA
• All campuses, future increment 3990 kVA
• All campuses, total 6965 kVA

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Emergency Systems

• Emergency power
• Fire alarm system
• Surveillance cameras
• Access control
• Security
• Duress alarm
• Asset locator
• Personnel emergency device tracking

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Communications

• Backbone cabling
• Single-mode fiber
• 10-gigabit Ethernet
• 192 strands of fiber from surface and to each
  campus
• Campus cabling
• Category 6 unshielded twisted pair

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Site Placement

• Visitor Center Interface with Public
• Parking Relationship to Office
• Offices, Laboratories, Warehouse and Shops
  Achieve a campus grouping of buildings
• Dormitory Cafeteria - Location to be
  determined, near campus
• Future Expansion - Post Mine closure

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Surface Buildings

• Surface Building Program
• Visitors Center total 50,000 sf to yr 15 30,000
  sf
• Admin/Offices/Laboratories total 85,000 sf to yr
  15 65,000 sf
• Dormitory Cafeteria total 35,000 sf to yr 15
  35,000 sf
• Assembly, Shops Storage total 25,000 sf to yr
  15 25,000 sf
• Existing Facilities (available after about 2026)
• Office Building 87,759 sf
• Surface Shop 26,000 sf
• Shaft Hoist House 9,600 sf
• Surface Warehouse 14,000 sf
• Building reuse issues
• DUSEL program needs phased buildout
• Existing building locations

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Surface Building Phased Buildout Budget
in thousands, 2006
Between year 15 year 20, existing Henderson
Mine buildings become available for DUSEL
re-development