Model 3430 Plus & 3440 Plus
GAUGE USE PRECAUTIONS
The following precautions should be observed when transporting,
storing, maintaining, or operating the gauge.
♦
Never touch the unshielded tip of the source rod with your bare
hands. The dose rates on contact with the source rod tip can
result in exposures exceeding the annual dose limits to the skin
of the extremities within a short time period (about 1 hour).
♦
When not taking readings, always keep the source rod in the
SAFE (shielded) position. For added user safety, the source rod
automatically retracts to the SAFE position when the gauge is
lifted by the handle.
♦
If you do not hear a click when the gauge is raised to the SAFE
position, look at the bottom of the gauge to verify that the
tungsten sliding block is completely closed. If the gauge base
opening is not completely closed by the sliding block, the
sliding block may require cleaning. Refer to page A–11 for
cleaning instructions.
♦
Do not store or transport the gauge unless the sliding block is
completely closed. Increased radiation levels may cause
excessive personnel radiation exposure and may violate
transportation regulations.
♦
When preparing a test site, use the drill rod assembly to drill the
test hole. Under no circumstances should the source rod of
the gauge be used to drill holes.
♦
Do not tamper with or modify the gauge. Also, do not remove
the sealed source from the gauge. Tampering with or modifying
the gauge or removing the sealed source can be dangerous. Such
actions are illegal unless authorized by your radioactive
materials license.
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