DAILY INSPECTION INSTRUCTIONS

Exposure mode

When the source assembly reaches the exposure head at the radiographic working position, the odometer will indicate (in feet and tenths of a foot) the approximate distance the sealed source has traveled. (See figure 3.4)

To return the source assembly to the exposure device the crank handle is rotated in the RETRACT direction (clockwise). When the source assembly is returned to the fully shielded position within the exposure device, the locking mechanism automatically secures the source assembly. The automatic securing mechanism will not permit exposure of the source assembly unless the radiographer pushes the lock slide into the expose position.

The remote controls cannot be disconnected from the source assembly unless the source assembly is fully retracted into the shielded position in the exposure device.

The system is designed for safe and reliable operation provided the system is properly used and maintained.

Source assembly

Sealed source

 

 

Control cable

Exposure device

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Remote

Locking

Shield

Outlet port

Source

control crank

mechanism

 

 

guide tubes

Figure 3.4 Sealed source in the exposure mode

3.5