SIGMA 150Ci - Manual (Page 21)

STEP 5
2.11
OPERATING INSTRUCTIONS
Dismantling equipment
Remote control unit
Unlock the exposure device and then rotate the selector ring from LOCK to CONNECT.
The remote control connector will partially disengage from the exposure device's
locking mechanism.
Completely disengage the remote controls from the exposure device by disengaging the
control cable connector from the source assembly connector. Place the protective cover
over the remote control's connecting plug assembly to exclude dirt and protect the control
cable connector from damage. Roll the remote control conduits loosely for easier handling
and transport.
Reinstall the locking mechanism's protective cover, hold in place and rotate the selector
ring to the LOCK position. Push in the plunger lock and remove the key to lock the
exposure device.
Source guide tubes
Remove the source guide tube attached to the exposure device outlet port by:
1 Rotating the spring-loaded outlet cover 60 degrees in a counter-clockwise direction.
2 Grasp the source guide tube fitting and rotate a quarter of a turn in a clockwise direction.
This action will allow removal of the source guide tube from the outlet port.
3 Simultaneously pull and rotate the spring-loaded outlet port cover a quarter of a turn in a
counter-clockwise direction.
Place the protective covers on the fittings of each source guide tube used to exclude dirt and
protect the swaged fittings. Source guide tubes should be rolled up loosely for easier
handling and transport.
Surveying
After installing the locking mechanism’s protective cover and the outlet port cover, survey
the entire circumference of the exposure device with the survey meter to ensure the source
is fully shielded and properly secured. The survey should not measure more than 200mR/hr
(2mSv/hr) on any surface of the exposure device and should indicate the same measurement
as the initial survey.
Storage
Lock the exposure device and secure it in a clean dry storage area where it cannot
be tampered with or removed by unauthorized personnel. Perform a storage survey
on the surface of the exposure device to verify the dose rate is less than 200mR/hr
(2mSv/hr) and record.
A radioactive material warning notice must be posted on the door or entrance of
the storage area. The door or entrance must be locked to prevent access by
unauthorized personnel.