Recent Remote Handling Experience at NuMI/ANU

RECENT REMOTE HANDLING EXPERIENCE AT NUMI/ANUNBI 2012 P. Hurh (FNAL)Nov. 10, 2012

Overview Experiences over past 2 years (since last

NBI) MiniBooNE NuMI Target Support NOvA Target Hall Re-configuration C-0 Remote Handling Facility

Future Concerns Support of future experiments Long Term Radioactive Storage and

Disposal Dose rate prediction tools

Over past 2 years MiniBooNE

Only maintenance and inspection activities No Horn/target replacement needed for ~8 years

NuMI/MINOS No Horn replacement needed Many Target problems (J. Hylen’s earlier talk) From the remote handling perspective:

Standard replacement procedures (5 replacements in 2 years was not standard!)

Specialized target autopsy tool successful

Residual Radiation

Horns and Targets supported on the bottom of large shielding modules Replaced in a simple work cell (no manipulators) where almost all

activities take place above the module through holes using specialized tools

Radioactive components are transported in end-loaded casks using a system designed by Vladimir Sidorov

Measured dose rates for NuMI Horn 1 water line repair (250 kW proton beam)

NuMI Work Cell

NuMI Target Hall

NuMI Horn Transport Cask

V. Sidorov’s Target Autopsy Tool Similar to a tubing cutter:

Target Cutting Tool Lined up to Target in NuMI Work Cell

NuMI Target NT-05 Cut-Apart

NOvA Target Hall Re-configuration Change to Medium Energy Optics for NOvA

requires moving the second horn location about 9 meters downstream

Target Chase area has been irradiated from many years of NuMI operation

Careful preparation and planning predicted total dose to worker of 2,495 mrem

Job was just completed in Sept-Oct 2012 with a measured dose of 1,538 mrem

Lead engineer: Salman Tariq

NOvA Target Hall Re-configuration

Clear out new location for Horn 2

Lower shielding blocks handled remotely

Storage for shield blocks

Horn 2 carriage installed

Temporary shielding to limit dose from upstream

T-block kinematic mounts

Horn 2 Lowered into carriage

T-Block Installation

Horn 2 installed (utilities yet to be connected)

C-0 Remote Handling Facility Needed to enable (while running beam):

Repairs Autopsies Volume reduction

Uses C-0 Detector Assy Bldg (from canceled B-Tev project) 10 m deep pit Triple redundant sump system Connected to Tevatron tunnel (future expansion

opportunity?)

C-0 Remote Handling Facility

Repair Cell Approximately 6m x 7m (internal

dimensions) Internal overhead crane (10 ton) and jib

crane (2 ton) Re-furbished Lead Glass Window

(PLUTO project- nuclear ramjet) 1 new manipulator, 1 surplus

manipulator Large sliding steel doors

Storage Bays 3 Large storage bays End load design allows for shielded

transfer Lead Engineer: Vladimir Sidorov

Lead Glass windows came from 1950’s era Project Pluto!

C-0 Repair Cell

C-0 RHF Storage Bays and Cask

C-0 Repair Cell

C-0 RHF Manipulators

C-0 RHF Remote Handling Tzar Sidorov

Future Concerns: Proposed Facilities Near & Mid-Term

NOvA (50-400 R/hr) Micro-BooNE (20-100 R/hr) Mu2e (300,000 R/hr!!) G-2 (12-60 R/hr) ORKA? NuSTORM?

Long Term (Project X) Four simultaneous running

target facilities at 1+ MW each!

Project X Reference Design

Project X Staging Layout

Future Target Facilities Impact:

Higher activity levels Multiple locations on site Increased frequency of handling

Requires: More sophisticated equipment More time for operations More and better-trained staff Better management of entire life cycle (LT

storage and disposal)

Long Term Storage and Shipment Facility

In order to handle the possibly hundreds of highly activated components from the rich Project X program, Fermilab is considering building a facility to: Safely and securely hold radioactive items

to decay Volume reduce large radioactive items Package decayed items for off-site disposal

Preliminary design features expandability to adapt to future needs

LTSF – Conceptual Design

Expandable end wall

Earth berm

Large Shielded

PitWork Cell

Large Item Bays

Control Room

LTSF - Expanded

Dose Rate Prediction Tools for Multiple Sources

What tools exist to predict dose rate at a point in space from multiple sources?

What can be developed?I v

neutrinos