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MERIT Equipment Disposal

This document outlines the equipment disposal process for the MERIT project, including dismantling and removal of equipment, draining and storage of mercury, inspection of the primary and secondary containment, and final disposal at a licensed facility. It also discusses the remaining equipment and options for salvage or shipment.

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MERIT Equipment Disposal

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  1. MERIT Equipment Disposal Van Graves MERIT Video Conference September 1, 2010

  2. MERIT Equipment Chronology

  3. Syringe pump dismantled & removed from secondary containment Hydraulic fluid drained & cylinders removed Dismantlement

  4. Mercury located in jet return piping (corrugated) and sump tank / drain All visible liquid removed and stored for reuse in SNS cavitation erosion experiments Mercury Draining

  5. All syringe pump components placed back into MERIT secondary containment box Box placed into B-25 overpack container for shipping Equipment Packing Mercury Cylinder & Sump Hydraulic Cylinder Filled Secondary Containment Secondary Containment

  6. Mercury Primary Containment Inspection – Viewport 2 Jet & Beam Jet & Beam Jet & Beam • Sapphire windows removed • No obvious surface damage noted • Higher quality photographs to be obtained Mercury Beads Sapphire Window Gasket

  7. Final Disposition • Equipment will be shipped to EnviroCare (Clive, UT) • Probably in Sept, but possibly in October • Only commercial facility in US licensed by NRC to accept low-level mixed waste • Disposal method: macroencapsulation • Developed by BNL • Molten polyethylene poured into container, then solidifies • Solidified box to be buried

  8. Disposal Costs • Through FY10, ORNL paying for actual disposal costs • FY11, that cost burden transfers to projects • MERIT funds paid for waste preparation paperwork, RCT support, dismantlement, surveying & sampling, packing, shipping container, etc. • Per ORNL Waste Services, disposal cost is based on burial volume (154 ft3 for B25 overpack) • $141 / ft3 -> ~$22k paid by ORNL

  9. What's Left • Hydraulic Power Unit (HPU) • Optics – fiber cables, mirrors, sapphire windows, optical shelf with prisms • Titanium beam windows (upstream secondary, downstream primary & secondary) • Nozzle piping & "pie plate" beam window Optics Shelf Secondary Beam Windows Primary Beam Window

  10. Hydraulic Power Unit (HPU) • HPU fluid sampled by ORNL – determination was No Radiation Added • Fluid sent to local oil recycler for reuse • HPU surface contamination check completed (negative), HPU is available for salvage or shipment

  11. Equipment Radiation Levels * Left/Right as seen by traveling along beam

  12. Equipment Radiation Levels (cont.)

  13. What to Keep? • Activated components will have to be shipped as radioactive • Only optical fibers can be shipped using normal channels • HPU available but no particular need defined for its future use • Short-term storage available at ORNL, but not long-term

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