Dismantling the Proton Hall

Proton Hall 1974

ARIEL (Advanced Rare IsotopE Laboratory)

The Experimental Hall

Whose equipment is this?

Created site awareness

Recover personal equipment

Opportunity to take abandoned equipment

What should we do with these?

Variable Speed Drives

Bender magnet

SASP and MRS

SASP and MRS

Neutron Collimator

•Weighed the practicality and benefit versus cost of recovery

•Obsolete

•Equipment too specific to a certain experiment What should we

discard?

What should we discard?

•Valves•Electric

al receptacles, conduit and connectors

Costly to recover

•Services

•Cables and cable trays

Impractical to keep

•Scattering chambers

•Beam dumps

No foreseeable repurpose

What should we keep?

•Determined what could be reused or repurposed

•Standardized

•Highly specialized expensive equipment

What should we keep?

Flow meters

Magnets

Power Supplies

How do we handle the radioactivity?

Surveys done of the area

Determine activity of equipment

Plan to minimize disposal

How do we handle the radioactivity?

Beam pipes

Concrete shielding

blocks

TISOL beam dump

TargetsSlightly active steel

Beam Dump Activities

BL4B BL4A/2 BL4B/2 TISOL

0

50

100

150

40

1.5 15

140

Dose Rates On Contact

uSv/hr

•Cutting live wires

•Cutting wrong cables

•Lead pigs left behind containing active foils

•Handling of active waste

Other Surprises

Other Challenges

•Evolution of media

•Lack of controlled documentation

• Budget

• Creating a “team”

Design Considerations for

the New Facility

• Alterations to roof beams

• Tunnel and hatches

• Ariel target area

Tunnel – Before and After

Conclusion