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Pneumatic Transfer Tube

Fluence Rates at 1 MWth
Thermal Neutron
Fluence Rate
(n cm-2 s-1)
Epi-thermal Neutron
Fluence Rate
(n cm-2 s-1)
Cadmium
Ratio
for Gold
1.0 x 1013
4.0 x 1011
2.6


Usable Dimensions

Short Polyethylene Pneumatic Transfer Tube: Inside Dimensions
Diameter:
 0.75 inches OR Diameter: 0.60 inches
Length:
 1.80 inches
Length:
 2.15 inches

Long Polyethylene Pneumatic Transfer Tube: Inside Dimensions
Diameter: 0.60 inches
Length:
 4.40 inches

Encapsulation Requirements
Facility: Pneumatic Transfer Tube (Rabbit)
Physical Form
of Material
Irradiation
(MWh)
Minimum Containment
Primary
Secondary
Without
Cadmium
Covers
Stable Solid
< 1
< 2 dram polyethylene vial
Not required
Liquid,
Powder, or
Other loose
Solid Material
< 1
< 2 dram polyethylene vial
< 2 dram polyethylene vial
With
Cadmium
Covers(1)(2)
Stable Solid
< 0.1
< 2/5 dram polyethylene
vial, or aluminum foil wrap
inside cadmium cover
inside < 2 dram
polyethylene vial
Not required
Liquid,
Powder, or
Other loose
Solid Material
< 0.1
< 2/5 dram polyethylene vial
< 2 dram polyethylene vial
Footnotes:
(1) A standard cadmium cover referenced in the table consists of a small cadmium box and cover which is capable of holding a conventional 2/5 dram or 2/27 dram polyethylene vial.
(2) Cadmium covers referenced in the above table have no specific shape or form requirements other than those imposed by the dimensions of the primary and secondary containment.

See also General Limitations on Experiments Performed.
 

Radiation Center, 100 Radiation Center
Oregon State University, Corvallis, OR 97331-5903
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