Annual Maintenance For Source Guide Tubes - QSA Global SENTINEL SENTRY 330 Manual

Do not over-tighten these fittings.
Perform a "misconnect test" (see Sections 4.1.4 and 4.6.4) of the serviced remote controls on a QSA
Global Inc. gamma-ray source projector locking mechanism to confirm the remote control assembly is
free from long term wear or damage could cause a failure of the interrelated failsafe system that includes
the control drive cable connector, safety plug assembly, device locking mechanism and sealed source
connector.
Replace the protective rubber cap over the end of the safety connector assembly.
Record all inspections conducted, all maintenance performed and components that were replaced on the
remote controls. Identify the remote controls with the serial number that is etched on the stainless steel
drive gear cover. See "Annual Maintenance Records" section.
Extreme controls descriptive: The lightweight, extreme controls were designed for operation in -40°C to
100°C temperatures while providing users with a rugged, water-resistant, crush-resistant weld-joined
control housings matched to an ergonomically designed hand crank. The extreme remote controls are
compatible with all QSA Global, Inc. crank-out radiographic gamma-ray source projectors.

4.6 Annual Maintenance for Source Guide Tubes

4.6.1 Maintenance Tools

A424-13XL or A424-14XL mock source assembly to perform function tests after cleaning and
inspection.

Length of clean control cable to push A424-13XL (or A424-14XL) through a 7 ft (2.1 m)
source guide tube.

1 in-18 tap and 1 in-18 die for male and female threads of the source guide tubes, if required.
4.6.2 Maintenance Materials

Solvent: Clean mineral spirits to clean the source guide tubes internally.

Clean lint-free cloths and detergent to clean the exterior of the source guide tubes.

Mil-spec grease MIL-G-23827B (or C), MIL-PRF-23827C (or equivalent radiation resistant
grease) to lubricate the swage fittings on the source guide tubes.

Source of compressed air and hand nozzle to blow dry the internal conduit of the source
guide tubes.

3M™ yellow polyvinyl tape (or black polyvinyl electrical tape) for repair of cuts in the source
guide tubes.

Loctite TM 242 (GLU031) temporary thread sealant or equivalent for bayonet adaptor threads.
4.6.3 Source Guide Tube Maintenance
a. Clean the exterior of all the source guide tubes thoroughly using clean cloths and a detergent.
Remove all dirt, grease and grime from the yellow polyvinyl source guide tubes and the swage
fittings.
b. (Use of Safety Glasses is recommended for this step.) Clean the interior of each source guide
tube by pouring 4-5 oz (100 ml) of clean solvent into one end. Manipulate the source guide tube back
and forth to cause the solvent to wash the interior of the entire length of source guide tube. Pour the
QSA Global, Inc.  40 North Avenue Burlington, MA 01803
Operations Manual  MAN-038 March 2019
CAUTION
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