Sigma projetor Step, Dismantling equipment Remote control unit, Source guide tubes, Surveying

OPERATING INSTRUCTIONS

STEP 5

Dismantling equipment

Remote control unit

Unlock the exposure device and then rotate the selector ring counter-clockwise 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 clockwise 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:

1Rotating the spring-loaded outlet cover 60 degrees in a counter-clockwise direction.

2Grasp 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.

3Simultaneously 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 2 mSv/hr (200 mR/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 2 mSv/hr (200 mR/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.

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