Capstone Workshop Closing Session Henderson DUSEL Conceptual Design

Capstone Workshop Closing Session Henderson DUSEL Conceptual Design Summary of Comments & Inputs 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

Topics & Approach Capstone Workshop Closing Session • Summarize current feedback & solicit feedback on: • Access to Central & Lower Campus • Upper Campus • Lower Campus • Fire & Life Safety Concept • Infrastructure systems • Construction schedule • Surface facilities • Approach • Briefly summarize baseline • Summarize current feedback and ask for your feedback 2

Capstone Workshop Closing Session Henderson DUSEL Central Campus Access 7625 shaft station 7500 shaft station PC 2 Conveyor to Mill Site Central Campus Elev. 6, 800 ft (4300 mwe) LA Ramp DC 1 Ramp Dedicated Exhaust Drift Primary Access Ramp Fresh air Exhaust air Secondary Access Ramp Crusher 7065 Level PC 1 Conveyor 3

Access Ramps Capstone Workshop Closing Session 7500 Level 1 st Drill Hole Primary Access Ramp 7065 Level Secondary Access Ramp Central Campus Elev. 6800 ft Earth. Lab/ Geoscience Area Midway Campus Elev. 5850 ft Internal Shaft 2 nd Drill Hole Lower Campus Elev. 4900 ft 4

Capstone Workshop Closing Session Internal Shaft (winze) 5

Feedback on Access Concept Capstone Workshop Closing Session • Use of 7625 shaft station & DC 1 ramp • Separation from mining activity, but longer travel time • No feedback so far • Primary, Secondary & other ramps • Location & arrangement • Ramp grade & cross section • Cutouts & outposts • No feedback so far • Internal shaft (winze) • Cross section & usage cycle • No feedback so far 6

Capstone Workshop Closing Session Upper Campus Layout 7

Feedback on Upper Campus Layout Capstone Workshop Closing Session • • Upper Campus • Location, baseline size, layout of spaces, size of laboratories Feedback • • • How can we facilitate Upper Campus usage for specific experiments? (size, shape, infrastructure) Large segment of UC at Class 10, 000 Need a wet lab & clean room (Class 10 -100, radon suppression) Larger LBCF facility? , new excavation(s)? Larger baseline design? Better timeline information for the initial use? More storage for detector components? Are facilities permanent or do activities transfer to CC/LC? Other feedback? 8

Capstone Workshop Closing Session Central Campus Layout 9

Feedback on Central Campus Layout Capstone Workshop Closing Session • Central Campus Layout • Interaction with access ramps & shaft • Location & depth • Baseline size • Relative layout of spaces • Size of laboratories • Feedback • Is the baseline number & size of caverns appropriate? • Initial suite = Baseline design • Is LBCF & special support systems adequate? • Other feedback? 10

Capstone Workshop Closing Session Lower Campus 11

Feedback on Lower Campus Layout Capstone Workshop Closing Session • Lower Campus Layout • Interaction with access ramps • Location & depth • Baseline size • Relative layout of spaces • Size of laboratories • Feedback • Is the baseline number & size of caverns appropriate? • Does the Deep Drilling Lab concept suit your needs? • Other feedback? 12

Capstone Workshop Closing Session Fire & Life Safety Concept 13

Capstone Workshop Closing Session FLS Feedback • Feedback? 14

System Design Concept Capstone Workshop Closing Session • • • 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 15

System Conceptual Design Feedback Capstone Workshop Closing Session • Topics • Radon-free air • Fire suppression • Power consumption • Infrastructure design life • Feedback • How should radon-free air be provided? • Is wet-pipe fire suppression system appropriate for the • baseline design? Need a water purification system: centralized/distributed, UC? , CC? , LC? 16

Capstone Workshop Closing Session Conceptual Design Construction Schedule 17

Schedule Feedback Capstone Workshop Closing Session • Feedback • Can we reduce time to Lower Campus availability? • Commissioning and shakedown time needs to be accounted • for? Experiment (tenant) Outfitting? 18

Surface Buildings Capstone Workshop Closing Session • Surface Building Program • • Visitor’s Center total 50, 000 sf Admin/Offices/Laboratories total 85, 000 sf Dormitory & Cafeteria total 35, 000 sf Assembly, Shops & Storage total 25, 000 sf • Regular & visiting staff & users to yr 15 30, 000 sf to yr 15 65, 000 sf to yr 15 35, 000 sf to yr 15 25, 000 sf • Surface & underground • 220 daily users • Roughly 130 permanent, 90 visitors • 100 dorm rooms • Feedback • Science staff portion is low 19

Capstone Workshop Closing Session Other Feedback • Limited time right now • Later today • Send feedback to the committee chairs • Time is now very limited 20

21 Capstone Workshop Closing Session

Capstone Workshop Closing Session 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 22

Ramps Capstone Workshop Closing Session Primary Access Ramp (to main shaft) Central Campus Elev. 6800 ft Secondary Access Ramp (to crusher) Exhaust Drift Ramp to Midway Campus Internal Shaft 23

Capstone Workshop Closing Session Shaft Cross Section 24

Capstone Workshop Closing Session Access Ramp Cross Sections Muck Haulage Shipping Container 25

Upper Campus Layout Capstone Workshop Closing Session Ventilation Shaft #2 Shaft 8100 Shop (2500 mwe) PC 2 Conveyor to Mill Site Mining Area 7500 Level (3300 mwe) 26

Capstone Workshop Closing Session Central & Lower Campus Building Blocks 27

Capstone Workshop Closing Session Central Campus Layout w/ Large Multi-Purpose Detector 28

Infrastructure Design Life Criteria Capstone Workshop Closing Session • Suggested initial design life (capacity only) • Lab life— 50? years • Drift cross section—sized for full expansion • Duct size— 20 years • Power conductors— 20 years • Power transformers— 10 years • Chiller piping— 20 years • Chiller plant— 10 years • Communications— 10 years 29

Capstone Workshop Closing Session Lab vs. Infrastructure Development Plan 30

Capstone Workshop Closing Session Lower Campus FLS Provisions 31

Capstone Workshop Closing Session Lower Campus FLS Provisions 32

System Conceptual Design • Basic services: Capstone Workshop Closing Session • 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 33

Ventilation & Cooling Design Criteria Capstone Workshop Closing Session • Virgin rock surface temperatures: • 90°F at upper campus • 107°F at central campus • 142°F at lower campus • Projection of bore hole temperature readings • Heat transfer coefficient • 0. 098 Btu / hr-ft 2 -°F after 720 days • Based upon published data • Mine ventilation air • Supplied to the central campus at 78°F 34

Ventilation Systems Capstone Workshop Closing Session • 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 35

Capstone Workshop Closing Session 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 36

Plumbing Capstone Workshop Closing Session • 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 37

Process Utilities & Fire Protection System Capstone Workshop Closing Session • 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 38

Lighting • Normal lighting Capstone Workshop Closing Session • 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 39

Capstone Workshop Closing Session Power • New feed from the surface at 13, 800 V • Unit substations at each campus • 277/480 V for lighting & power to mechanical systems • 120/208 V for receptacles • Demand • All campuses, immediate: 2975 k. VA • All campuses, future increment: 3990 k. VA • All campuses, total: 6965 k. VA 40

Capstone Workshop Closing Session Emergency Systems • Emergency power • Fire alarm system • Surveillance cameras • Access control • Security • Duress alarm • Asset locator • Personnel emergency device & tracking 41

Communications Capstone Workshop Closing Session • 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 42

Capstone Workshop Closing Session Site Placement • • • Visitor Center – Interface with Public Parking – Relationship to Offices, Laboratories, Warehouse and Shops – Achieve a campus grouping of buildings Dormitory & Cafeteria - Location to be determined, near campus Future Expansion - Post Mine closure 43