Troxler Enhanced RoadReader Plus 3451, Manual Of Operation And Instruction

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Appendix A–14
LEAK TESTING
The 3451 gauge contains two radioactive sources that must be
periodically leak tested. The purpose of leak testing is to verify the
integrity of the source encapsulation. Because the source capsules
are not directly accessible to users, the leak test is performed
indirectly by testing gauge components near the capsules for
contamination. Unless specified otherwise by your radioactive
material license, the gauge must be leak tested at intervals not
exceeding 12 months to verify the integrity of the radioactive
sources contained in the gauge. In the United States, leak tests may
only be performed by an organization licensed to provide leak test
kits to licensees and to analyze leak test samples.
To perform a leak test, use the Troxler Model 3880 Leak Test Kit
(PN 102868) and accompanying instructions to perform the
following procedure:
✓
Write the gauge model and serial number on the wipe disk.
✓
Ensure that the source rod is latched in the SAFE (shielded)
position.
✓
Wipe the area where the plastic top shell joins the metal base on
both sides of the gauge. This is the location nearest the
Am-241:Be source.
✓
Turn the gauge on its side and locate the opening on the bottom
of the gauge through which the source rod would protrude.
✓
Holding the wipe disk with the tongs, wipe around and in this
opening. This is the area nearest the Cs-137 source.
✓
Pack the disk in the envelope as instructed in the leak test kit,
and mail to Troxler Electronic Laboratories, Inc. for analysis.
✓
Secure the gauge properly.
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