Shielding materials Issues of Interst

1
Shielding materials Issues of Interst

• Radiation Interactions
• Shield effectiveness
• Secondary radiations
• Radiation damage
• Economic Considerations
• Raw materials cost
• Fabrication cost
• Installation costs
• Value of effected volume
• Maintenance Durability
• Decomissioning

2
Lead

• Density 11.34 g/cm3
• Melting point 327 C
• 1.25- 5 per pound
• Structural
• Availability
• Fabrication

3
DU

• Density 18.95 g/cm3
• Melting point 1132 C
• Costs?
• Structural
• Availability
• Fabrication

4
Tungsten

• Density 19.39 g/cm3
• Melting point 3410 C
• 5 per pound
• Structural
• Availability
• Fabrication

5
Steel Alloys

• Density 7.86 g/cm3
• Melting point 1400 C
• .75- 2.50 per pound
• Structural
• Availability
• Fabrication

6
Aluminum

• Density 2.7 g/cm3
• Melting point 660 C
• 2 per pound
• Structural
• Availability
• Fabrication

7
Concrete

• Density 2.35 g/cm3
• Temp limit 150-200 C
• .70 per yard
• Structural
• Availability
• Fabrication

8
Earth

• Density 1.8 g/cm3
• Temp limits variable
• Cost ?
• Structural
• Availability
• Fabrication

9
Graphite

• Density 1.7 g/cm3
• Melting point 1500 C
• Structural
• Availability
• Fabrication

10
Water

• Density 1 g/cm3
• Melting point 0 C
• Structural
• Availability
• Fabrication

11
Specialized Shielding Materials

• Loaded Concrete
• Lead Glass
• Low Density Pb Bricks
• Borated polyethylene

12
Commercially available materials

• Ledite
• Ducrete
• High Density Aggregates Concrete
• Lead Lined Drywall
• Borated Polyethylene