Tevatron Decommissioning Rich Stanek Fermilab Institutional Review June 6-9, 2011

1. Tevatron DecommissioningRich StanekFermilab Institutional ReviewJune 6-9, 2011

2. Outline Introduction Establishing the new D&D Plan (Two Phases) Fermilab Visitor Program Phase 1 – Secure, Reuse & Display Phase 2 – Full Disassembly & Disposal Summary

3. Introduction TeV, CDF and D0 decommissioning will begin in FY12 • Work starts after required calibration/survey work is completed No longer planning to keep TeV at 80K  opens up an unique opportunity to display the TeV and the collider detectors to our visitors • Distinctive communication opportunity for the public • Exceptional educational experience for students Task Force formed (Feb 2011) to prepare a plan • Representatives from the Divisions/Sections plus technical Subject Matter Experts and management representatives • Develop two phased approach which initially puts detectors and a part of TeV on display for our visitors and defers full D&D until a later time

4. TeV Decom Task Force Membership Marge BardeenPeter CooperDonald CossairtPaul CzarapataBill ShullGeorge GintherJack KellyJonathan LewisRhonda MerchutRon Moore Kurt RiesselmannRuss RucinskiPhilip SchlabachRich StanekKatie Yurkewicz Young-Kee Kim Greg Bock Peter Garbincius Michael Lindgren Randy Ortgiesen Scientists, engineers, materials handling specialist, ES&H rep, facilities engineers (incl. IARC rep), Office of Communication, Education Office and management

5. Methodology for Establishing the Plan Establish a conceptual plan Build consensus • Disseminate information about the plan to interested parties • Receive feedback and suggestions for improvements • Solicit agreement from management (DOE, Lab, and collaborations) Employ a project-like approach to TeV Decom work • WBS defining the Scope of Work • List of Assumptions • Include agreed upon reuse of space inside buildings • Interaction with IARC (CDF) and future LAr work (D0) • Understand ES&H issues associated with this work • List of Reusable Components • Work with collaborators and future experiments • High-level Cost Estimate/Preliminary Schedule (presented today) • Resource Loaded Schedule

6. TeV Decommissioning Plan Phase 1 Secure, Reuse & Display • Secure and stabilize systems • Eliminate or mitigate hazards • Put systems into long term storage mode • Cleanout support areas and harvest useable components • Coordinated effort to remove equipment and cleanout areas that have an agreed upon reuse • Setup TeV, CDF and D0 to be a bigger part of visitor program • Basic Display - make required Life Safety improvements, utilize existing hardware exhibits and begin scheduling visitor tours • Full Display - build out displays/exhibits, improve accessibility… Phase 2 Full Disassembly & Disposal • TeV Tunnel – clean out complete TeV tunnel except for beamlines to AP0 and Switchyard. Concrete tunnel sections remain in place • TeV Surface Bldgs. – continue to store reusable cryo/elect equipment • CDF and D0 – disassemble and dispose of detectors

7. Reuse of CDF and D0 Buildings 1 kton LAr TPC prototype in D0 Assembly Building IARC and CDF

8. Fermilab Visitor Tour Program Goals of the Visitor Program Allow visitors to gain appreciation for Fermilab science and technology and the importance of particle physics research View as much real science as possible, to learn • Type of work done by the Fermilab technical workforce • Scale and complexity of instruments/experiments • International make up of HEP collaborations Opportunity to meet members of the technical staff Total Fermilab Visitor Program ~ 12,000 visitors per year • Split evenly between K-12 students & adults • Size varies from 120 middle school students to groups of 10-20 college students or adults. • Docents divide large groups in smaller groups of 20 20 VIP Tours per year (small groups) Envision Collider Tours to be a subset of the Total Visitor Program

9. Post-Tevatron Opportunity Tell an in-depth science story about the premier US High Energy Physics Lab. Allow visitors up close and personal access to the tools we use to perform our work.

10. CDF and D0 Displays Each detector offers its own unique experience • CDF  tour inside the Collision Hall • Technology  Silicon and wire chamber tracking, plastic scintillator calorimetry with modular muon coverage • Access  Detailed inner detector tour including access to TeV tunnel • Emphasize  Past (TeV Collider) versus present applications (IARC) • D0  impressive view from the overlook and from the ground level of Assembly Hall • Technology  Silicon and scintillator fiber tracking, LAr calorimetry with hermetic muon detector coverage • Access  View of detector facilitated by partial removal of the shield wall. Detailed inner detector tour reserved for VIP tours • Emphasize  LAr technology present & future as well as Project X Visitor experience will be complementary

11. Tour Area Objectives Preserve working atmosphere • This is what tour groups are interested in seeing Provide space at CDF and D0 for ~60 visitors/tour • Broken into three smaller groups Use conference rooms for orientation and “discussion with a scientist” Develop points of interest: • Control room (plus trigger room): Analysis & discovery • Collision hall/detector: Detector technology • Exhibit area: Artifacts & evolving research program • Tevatron: Accelerator technology Both areas offer opportunity to view history and future • CDF – CDF detector/TeV tunnel + IARC • D0 – D0 detector + future LAr development + Project X

12. Display Concepts Basic Display Program • Use as much of the existing exhibit material as possible • Create new posters, videos and other materials as needed • Develop complementary tour programs at CDF and D0 • CDF – detailed detector tour plus short TeV tunnel access combined with tour of control room • D0 – limit detailed detector tours to VIP visits, concentrate on grand view of detector open to the assembly hall and accessible parts of facility infrastructure • Offer tours as soon as spaces are secured and ready (~ 1 year) • Start slow and increase frequency of tours with time Full Display Program • “Build out” the points of interest with hands-on exhibits • Develop materials for evolving research program • Increase accessibility to detector areas

13. What are the Benefits? Unique opportunity to present the complexity and importance of particle physics research Greatly enhances existing visitor program (adding a huge “wow factor”) • See real scientific instruments at HEP scales • Go inside a previously inaccessible scientific workplace • Compare/contrast Tevatron experiments with current projects Builds community awareness of Fermilab’s future • Ties the past and present to the future including ties to LHC Builds support for and awareness of the value of scientific research Helps people get an idea of what it means to be a scientist . . . you don’t need a white coat

14. This is why we do it ! Subject: Fermi lab student visit 5/18 Nancy, Thank you SO MUCH for hosting our group last Wednesday - the students had a fantastic time, and it really helped sort out the future physicists from the 'other' sciences - we have at least three now who are convinced that physics is their “calling”. :-) Anyway, I wanted to say "thank you" to you, and to our guide, and also to the physicist on staff that was willing to speak to the students during his 'after hours' time! THANKS!!! Laura Forbes Science Instructor MOISD Math Science Technology Center

15. Tevatron Scope of Work for Phase 1 is well understood • Secure & Stabilize part is similar to work required for a long shutdown but with more permanent disconnection of energy sources/removal of hazards • Display concept only affects a small section of tunnel • Rest of tunnel will be positively isolated • Developing estimates for continued annual maintenance • Maintain services to areas as required • Parts of TeV tunnel still used for operation • Keep the tunnels in reasonable shape • Address long term site issues and development plans Phase 2 estimate has been revisited • Included costs to remove all components (incl. old MR magnets) • Developed an estimate for removal on a “per house” basis • Allows Phase 2 Full TeV D&D to begin when funding is available

16. CDF Scope of Work for Phase 1 • Secure & Stabilize is well understood • Cleanout & Harvest Components is taking shape • Working out many details on how spaces will be reused • Setup for display/visitors • Several possible life safety projects are being investigated • Engaged fire protection consultant and Lab’s official “Authority Having Jurisdiction” (AHJ) for walkthroughs of areas Interaction with IARC building construction • Working on integrating milestones from IARC construction schedule with Phase 1 schedule In the short term, continue to make effective use of space • While IARC develops, Particle Physics Division will continue to use west high bay/part of assembly pit (efforts are coordinated) Phase 2 estimate remains essentially unchanged from last year

17. D0 Scope of Work for Phase 1 well defined • Secure & Stabilize well understood • D0 plans on 12 weeks of cosmics and calibration runs after TeV shutdown • Maintain appropriate environment for depleted uranium once the detector is warm • Cleanout and Harvest stage is relatively well understood • Firm plan for the visitors program Interaction with future LAr development work • Future use is consistent with current infrastructure • Many D0 technical experts are involved with future LAr projects Only minor modifications to the Phase 2 cost estimate relative to last year’s estimate

18. WBS WBS has been developed for each of the three areas Developing Work Packages for detailed tasks (D0 Secure Detector Systems) and Planning Packages for future work that still needs more definition (CDF cable carrier removal)

19. List of Assumptions/Requirements List continues to grow as work gets more defined Sorted by System Phase Key Word Partial list shown

20. Reuse Lists (still growing) Want to assure that valuable components that have intended reuse are identified and preserved

21. TeV Cryo System Work List -Secure & Stabilize

22. CDF/ D0 Life Safety/Display Work List Work lists and initial cost estimates generated (based on a walk through of area) Final life safety work list will be compiled after consultation with Fire Safety consultant Partial list shown

23. Use of Consultants - Aldrich Pears Preliminary Report

24. Overview of Applicable Fermilab ES&H Policies The Fermilab Environment, Safety, & Health Manual (FESHM) contains the relevant policies including the Fermilab Radiological Control Manual (FRCM) FESHM Chapters of particular relevance • 1000 series – roles, responsibilities, authorities • 2010 – accelerator safety; safety assessment documents (SADs) • 2060 – work planning, hazard analysis • 5000 series – worker safety during “deconstruction” • 6000 series – fire safety; altered uses of space • 7000 series – construction safety; “deconstruction” • 8020 series – waste management (4 chapters) • 8060 – National Environmental Policy Act (NEPA) • 8070 – facility decontamination & decommissioning • 11010 – ES&H access control; tour group policy

25. Specific DOE Requirements Related to D&D Mostly applicable to Phase II DOE Order 430.1B Real Property and Asset Management • A collection of more than 30 DOE Guidance documents accompany this order. • Many aspects of this order apply to D&D actions. DOE Order 458.1 Radiation Protection of the Public and the Environment • Covers disposition of potentially radioactive materials and their release to the public.

26. ES&H Major Challenges Radiation Issues • FRCM Chapters of particular relevance • Chapter 2 – radiological standards; dose limits, • Chapter 4 – standards on radioactive materials (sealed sources) • Chapter 9 – policies on “radiation” & tour groups Material Disposal • Rad Waste / Mixed Waste • Regulated Chemical Waste • Depleted Uranium Life Safety / Building Occupancy Issues • Working with AHJ and Fire Safety Consultant Mechanical /Electrical Disassembly Issues • Work planning, Job Hazard Analysis… • Coordination with other ongoing activities in the area NEPA Assessment

27. Cost Estimate for Phase 1 Majority of the cost estimate based on engineer or scientist estimates Contingency is estimated at 50 to 70% Setting up Basic Display adds $3M to Phase 1 cost (~2/3 of this total are building improvements related to the dual use of the areas)

28. Phase 1 Timeline Full Resource Loaded Schedule is being developed

29. Phase 2 Full Disassembly & Disposal Remove, disassemble and dispose of components in the TeV tunnel, CDF and D0 Collision Halls as well as all elements of the display Estimates are based on previous work Take into account • Clean out work already performed as part of Phase1 • Intended reuse of buildings and possibly the tunnel • Maintain infrastructure that has future use  not going to a “green field” site • Any new information regarding disassembly or disposal Outstanding issues include • Better understanding of disposal methods/costs associated with slightly radioactive material and depleted uranium from D0 • Availability of technical experts/fixtures when Phase 2 begins

30. Phase 2 TeV Full D&D TeV – Previous D&D plan was revisited • Scope of Work includes removing and disposing of everything except the tunnel sections • Old Main Ring magnets and buss work, Tevatron magnets and equipment, cryogenics, piping and cable tray systems • Detailed list of all components exists • Removal times based on experience of having changed components over the operational lifetime of the machine • Developed an estimate on a per house basis • All houses are not identical but are similar enough for this to represent a good average cost • Multiply per house cost by 24 but then take into account economies of scale if entire tunnel done at once

31. Tevatron Phase 2 Estimate (per house estimate) • Fermilab personnel involved in supervision of the work, some disconnects, transportation and disposal of components • Mechanical, electrical and cryo technical staff oversight (6.5 FTE) • Plan, develop JHA/procedures, supervise and control the work… • Truck driver and 3 person crew to pack, categorize, and transport waste to railhead

32. Phase 2 D0 Full D&D • D0 detector elements • Tracking, solenoid and toroid magnets, calorimeters, muon, trigger • 40 foot tall, 40 foot wide, and 60 foot long • Dealing with heavy objects  5500 tons • Detector platform 80 tons • Central calorimeter cryostat 420 tons incl. LAr • End calorimeter cryostats 260 tons each incl. LAr • Central Irons (Toroid) 1000 tons each • End Field Irons (Toroid) 930 tons each • C Layer Iron Trusses 18 tons each • Muon shielding iron nose piece 63 tons each • Muon shielding clam shell ass’y 39 tons each

33. D0 Full D&D Conceptual Plan • Roll out detector and cut the major pieces of iron into sections that can be lifted by the 50 ton crane • Open the calorimeter cryostat vacuum vessels in the DØ Assembly Building pit surrounded by a local contamination containment area • Disassemble the calorimeters into modules and dispose of the resulting material • Assumptions • Uranium handling at Fermilab will not be significantly more complex than it was when the EC modules were assembled at IB-4. • Unstacking of the various calorimeter modules and disassembly will occur in a serial manner (resulting in the long duration in the schedule) • Existing clean room can be readily outfitted to serve as the primary disassembly area

34. Phase 2 CDF Full D&D Once again, large heavy objects • Muon walls 300 tons each • Toroids 400 tons each • Central arches 200 tons each

35. CDF Full D&D Conceptual Plan Calorimeters and Muon Walls • Roll out detector • Disassemble CMX (muon) arches • Dismount CMP and BMU muon chambers • Unstack Central Calorimeter arches and strip down wedges • Remove and rotate plugs • Strip scintillator • Remove and strip Endwall Calorimeter Modules Central Detector (including solenoid) • Reverse the assembly process • Using original assembly fixtures will help

36. Cost Estimate for Phase 2 Contingency is high (100%) due to several higher risk items and the fact that the plan is still developing • What will be rules in place (at the time of Phase 2) for material disposal? • Will there be additional calls for some of the detector components? • Will systems come apart “as easy” as they went together? Cost might be reduced • By making use of specialized outside contractors for bulk removal (under proper supervision by trained Lab technical staff) • By bundling more work together may find economies of scale

37. Timeline for the Near Term Continue to refine work details and improve cost estimate Develop the full Resource Loaded Schedule (RLS) including interface with IARC construction schedule • Complete RLS by August 12th Perform more detailed contingency analysis (lower level) • Complete by August 31st Clarify line organization responsibilities for executing work • Complete by September 2nd Perform internal Director’s Review of the D&D Program • Week of September 12th – 16th Begin Phase 1 work • October 3rd barring any changes in operating schedule

38. Summary Tevatron will be shutoff at the end of FY11 Decommissioning will begin in FY12 (after required calibration runs and surveys) Two-phased decommissioning plan is proposed • Phase 1 Secure, Reuse & Display • Takes advantage of an unique opportunity to strengthen our visitor program • Phase 2 Full Disassembly & Disposal • Takes into account the intended reuse of facilities/equipment Preliminary cost estimate and schedule are presented for both Phases • Contingency is high due to some higher risk items and the need to perform additional engineering and work analysis