Routine (Annual) Maintenance Requirements - QSA Global SENTINEL SENTRY 330 Manual

The test should only be performed by personnel that are formally trained, authorized and thoroughly
familiar with annual maintenance procedures. This test is performed by engaging the remote control
connecting plug assembly into the exposure device's locking mechanism WITHOUT first engaging the
control cable connector within the source assembly connector.
The ability to then rotate the locking mechanism from the CONNECT position towards the LOCK
position indicates critical dimensions of the locking system are excessively worn to an unsafe condition.
Extreme care should be exercised to prevent rotating the locking mechanism's selector ring
beyond the LOCK position (see WARNING above). If the locking mechanism and remote controls
fail a misconnect test the equipment must be removed from radiographic operations. The equipment
must not be used until repairs are performed and misconnect test results are satisfactory.
During the performance of the misconnect test there is a risk of losing control of the
radioactive source assembly if:

the components are excessively worn or damaged

the person performing the test intentionally or inadvertently rotates the selector ring from the
CONNECT position to the OPERATE position

the person performing the test intentionally or inadvertently pushes the lock slide into the
EXPOSURE mode.
Contact a QSA Global, Inc. service center if you have questions regarding the misconnect test.
4.1.5 Routine (Quarterly) Maintenance Records
Records of all equipment inspected and maintained during the routine maintenance must be
recorded. The records should indicate:

The date of inspection and maintenance.

Name and signature of the qualified individual performing the required inspections.

Problems found and maintenance or repairs performed.

Model number and serial number of the gamma-ray source projector and transport container.

Associated equipment that was inspected and maintained.

Part numbers and associated lot numbers or serial numbers of replacement parts installed.
These inspection and maintenance records must be retained according to the record keeping
requirements of the applicable regulatory jurisdiction.

4.2 Routine (Annual) Maintenance Requirements

Radiographic gamma-ray source projectors used under normal environmental conditions should only
require complete maintenance once a year. Complete maintenance on the associated equipment
including the remote controls and source guide tubes should be performed every three months to prevent
corrosion, detect any damage and any deficiencies related to the long-term wear of components that
could compromise safety.
The complete maintenance of the gamma-ray source projector requires the disassembly of the gamma-
ray source projector to enable a detailed inspection of all major components. Therefore, the inspection
and maintenance requires transfer of the source assembly from the gamma-ray source projector into a
QSA Global, Inc. 
WARNING
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Operations Manual  MAN-038 March 2019
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