1-10 FT-100/CI and FT-170/CI Operation Guide
Document 40275-0913
• Opens to allow radiation to move from the gamma source
container thereby producing the inspection beam.
• Closes to seal the container and stop radiation moving from
the gamma source container thereby stopping the inspection
beam.
1.6.3 How the FT-100/CI Provides Safety From Gamma
Radiation
The filtec FT-100/CI utilizes a small quantity of the radioisotope
Americium-241 to produce low level gamma radiation. The
Americium-241 is in ceramic enamel form and its melting range is
in the region of 900 degrees to 1050 degrees centigrade.
The Americium-241 is sealed inside a special type 304 stainless
steel capsule that is double-fusion welded. This capsule is
mounted in a stainless steel enclosure inside the FT-100/CI
inspection head.
A radiation safety shutter, when opened, permits a narrow beam
of radiation to pass through the plastic radiation window in the
enclosure. When the safety shutter is closed all radiation is
contained within the source enclosure.
There are two possible ways to be exposed to hazardous levels of
radioactive material using this equipment: externally, through
excessive exposure to a radiation source outside the body, and
internally by ingesting radioactive material.
The FT-100/CI is unlikely to create hazardous radiation levels for
the following reasons:
• The FT-100/CI’s radiation source produces a relatively weak
source of low energy (low penetrating power) gamma
radiation. To receive a hazardous dose of radiation from this
low energy source would take extremely long exposure
directly to the main radiation beam.
• While we warn against placing hands or other body parts in
front of the gamma beam when it is turned on, it would take
several hours of exposure for the hand to receive an excessive
radiation dose.
To Next Page
Loading...
