1. 1 Homes take DUSEL NSF Preliminary Baseline Review - April 13-15, 2010 Bob Altes Engineer- ISE Water Shield Engineering Figure Courtesy PDG and LBNL Homestake DUSEL FAARM AARM Collaboration Meeting UC Berkeley March 19-20, 2010

2. 2 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010Overview Structure –Construction Concepts –Strength Issues Design issues Fabrication Transport Assembly Integration 4850 Level Campus 7400 Level Campus

3. 3 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010 Concepts Concepts Liquid/Metal Skin Modular –Structural modules-building blocks –Non structural modules-external structure Liquid/Plastic container modules –External structure requirements 4850 Level Campus 7400 Level Campus

4. 4 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010 Steel Modular Water Shield Six foot water shielded hot cell Chevron interfaces Mild steel-3/16in. Thick –Stiffened vertical plates for Hydrostatic pressure & Gravity loads Inside dimensions –5’x8’x12’ Air vented to top row of tanks 4850 Level Campus 7400 Level Campus

5. 5 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010 Tank Modular 4850 Level Campus 7400 Level Campus

6. 6 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010 Steel modular Water Shield 6 foot water shielded facility 4850 Level Campus 7400 Level Campus

7. 7 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010Concepts-Cont. Plastic Shielding –Type of material and implementation method –Availability –Castings Cast Block modules Panels (thick) built-up from thinner plates or castings –Sprayed in place Probably less dense than cast material Possible EH&S restrictions –External structural requirements 7400 Level Campus

8. 8 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010 Acrylic Panel Shield Concept 4850 Level Campus 7400 Level Campus

9. 9 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010 Strength Issues Walls –Vertical and Lateral stability –Bracing requirements Roof –Design for shielding wt. plus ancillaries –Tensile/compression and shear stress –Lateral stability-buckling –More challenging for plastic Cavity floor –Loading/stiffness requirements –Minimize mass of less radio pure materials

10. 10 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010 Cavity Floor Concept Removable Panels –Like Computer room floor –Box construction –Face thickness to support Concentrated loads –Web for support of Distributed Loads Box support structure below Panels-Stiff Piers below stiff support structure –Shimmed/grouted to module floor 4850 Level Campus 7400 Level Campus

11. 11 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010 Design for minimum “shine” Water/Steel or plastic containment Modules –Walls Venting and Head issues Stepped horizontal joints –Metal/metal, plastic to plastic gaps –Air voids –Hydrogenous thickness Roof –Stepped vertical joints –Hydrogenous thickness Utility penetrations 4850 Level Campus 7400 Level Campus

12. 12 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010 Tank Interfaces Horizontal interfaces –Metal/metal on shoulders-tolerances –Air removal on flat headers difficult –Possible hydrogenous 1/3-2/3 t Chevron Interfaces –Metal /metal contact through interface –Air removal easy-anything over 3 degrees good –Hydrogenous greater than ½ t 4850 Level Campus

13. 13 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010 Tank Interfaces Vertical Interfaces –Metal to metal on shoulders and lower vertical surfaces –Clearance on upper vertical surfaces –Clearance gaps filled with plastic plate/sheet (Polyethylene for example) –Hydrogenous shielding t/2 or greater in joint region

14. 14 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010 Fabrication and Transport Fabrication Materials and Equipment Transport Rely on 18000 kg (18 Ton) Yates Super Cage Dimensions: Height 4.9m,16 ft Length 4.1m,13.4ft Width 3.2m,10.5ft 4850 Level Campus Super Cage Auxiliary Hoist

15. 15 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010Fabrication-cont. Metal modules Fabrication at 4850 level –Plate and equipment size limits –Where? –Quality Control and EH&S issues o Material handling o Welding o Chemical cleaning and passivation type processes Vendor surface shops –Module finish size limits Structural Elements Vendor surface shops Yates lift limited (same as raw stock)

16. 16 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010Fabrication-cont. Plastic modules Plastic Panels –Vendor surface shops o Casting o Machining and module assembly /disassembly o Shipping Module assembly –Components and assemblies to 4850 –Yates size limit –Assembly in module 4850 Level Campus 7400 Level Campus

17. 17 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010 Assembly Integration Scheduling by module occupants –Staging area and crane use FAARM assembly plans –Water shield –Immersion tank –Ancillary equipment Cranes rigging and special fixtures –Module 30-40 ton monorail and 20 bridge –Small crane inside the water shield –Experiment supplied fixtures and rigging Many design related issues here 7400 Level Campus

18. 18 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010 Module Space/Crane Issue Layout assumptions –Design of Monorail can be brought back to 2m –Bridge crane available During assembly Risk –Assembly scheduling For 3 experiments –Bridge crane may be Blocked by other users –Agreements necessary among module occupants

19. 19 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010 Shielding Liquid Processing system Breech containment –Processing system –Shield volume 4850 Level Campus 7400 Level Campus

20. 20 Homestake DUSEL AARM Collaboration Meeting - March 19-20, 2010