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Figure 3 - KEY ELEMENTS OF THE MODEL 989 EXPOSURE DEVICE
The Model 989 complies with ISO 3999:2004(E) requirements, except for the following:
•
5.4.2:
There is no secured position indicator when using pneumatic actuators. Direct radiation
surveys of the device are required to confirm the source is fully shielded.
•
5.5.1:
There is no device handle provided with the Model 989, however an optional handle assembly can
be obtained from QSA Global, Inc. When used without this optional handle assembly, the Model
989 does not fully comply with ISO 3999.
•
5.8.6:
Pneumatic actuation mode; damage to the air hose will cause loss of air pressure causing
the source assembly to be returned to the shielded position.
•
8:
The source identification tag including activity in Ci’s and Becquerels. (Curies are
provided). The Model 989 exposure device label provides the maximum capacity for
Se-75 in Curies and Becquerels.
Partial compliance with the requirements in ISO 3999:2004(E) is allowed for this device since it is classified as
Category X.
C. Model 989 System Components
1)
Model 989 Radiographic Exposure Device
The Exposure device with it’s key-lockable protective cover (see Figure 2) and reusable shipping case serves as
the storage and transport package for the radioactive source. The exposure device consists of a stainless steel
housing which contains a tungsten shield. When the source is in the proper shielded storage position in the
exposure device, the shielding properties of the tungsten reduce radiation intensities on the surface of the Model
989 to measurable radiation levels within the regulatory limits. The key-lockable Model 989 exposure device
placed within the lockable shipping case constitutes the Type A transport package.
Summary of Contents for 989
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