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

4.1 Routine (Quarterly) Maintenance Requirements

4.1.1 Remote Controls
Disassemble, clean, inspect and maintain the remote control crank, control conduits and control
cable according to the complete service section. Record the results of the inspection and any
repairs that are performed. Any components found to be deficient during the inspection must be
removed from service until repaired or replaced. Deficient components must be labeled with a
status indicator to prevent inadvertent use.
4.1.2 Source Guide Tubes
Clean and inspect the source guide tubes in accordance to the "Quarterly and annual
maintenance for source guide tubes" section of this manual. Record the results of the inspection
and any repairs that are performed. All source guide tubes found to be deficient during this
inspection must be removed from service and sent to a service center for repairs. Deficient
components must be tagged with a status indicator to prevent inadvertent use.
4.1.3 Radiographic Gamma-ray source projector
Clean and inspect the gamma-ray source projector/transport container for wear and obvious
damage. Record any defects that might affect safe operation of the gamma-ray source projector
or contribute to unsafe transport of the device in the container. If deficiencies are found during
this maintenance, the gamma-ray source projector must be removed from service until repairs are
accomplished and the results of subsequent operational tests and inspection are satisfactory.
Inspect the radiography system for the following details using a 'satisfactory' or 'deficient' criteria:
a. Survey the surface of the container to ensure the measurable dose/rate is less than 2 mSv/hr
(200 mR/hr) and less than 50 µSv/hr (5 mR/hr) at 1 meter (to comply with ANSI/ISO
requirements). Remove the device from service if the measured dose/rate exceeds these
limits. Contact QSA Global, Inc. for guidance.
b. Ensure the metal identification tag for the radioisotope is legible and securely fastened to the
gamma-ray source projector. Do not cover the tag with any other labels.
c. Ensure the label containing the device model number, serial number, Type B(U) certification
number (or Type A specification identification) and the trefoil with the warning 'Caution or
Danger, Radioactive Material' is legible from a distance of 3 ft (approximately 1 m) and
securely fastened to the container. Do not cover the required warnings with any other labels.
Ensure the labels applied for transportation are legible. As required, ensure the label that
provides the owner's name (company name), address and telephone number is legible and
affixed to the gamma-ray source projector.
d. Check the welded stainless steel tube extensions of the gamma-ray source projector for weld
failure (cracks, etc.) which protect the rear plate (locking mechanism) or the front plate (outlet
port). Verify all bolts securing the locking mechanism and outlet port plates to the projector
body are present and secured. Verify the plunger lock is properly engaged when the key is
removed. Ensure the top, the bottom contact surfaces and the sides comprising the handling
rib assembly of the gamma-ray source projector are intact and will not compromise safety
when lifted or secured to the mobile cart. Check the bottom contact surfaces of the handling
rib assembly to ensure the contact area is not excessively worn allowing contact of the
stainless steel body with the work surface.
inspection, repairs can be accomplished at a QSA Global service center.
QSA Global, Inc.  40 North Avenue Burlington, MA 01803
Operations Manual  MAN-038 March 2019
If any deficiencies are found during this
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