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Operation
There are no ON/OFF Indicators to verify that the shutter or cable/rod mechanism is
working correctly or that the source is in the shielded position. When the source
shutter or positioning rod or cable is in the retracted position and the shutter is
closed, it is assumed that the source is in the shielded position.
Monitoring of the radiation levels by level detectors or other means is necessary to
ensure that the source is in the shielded position and not in the source well.
Keep the records of these tests, listing the date and name of the person
performing the test, for at least three years.
At the first indication that a shutter or cable/rod mechanism is not working
properly, contact the manufacturer for advice. A sticky shutter or a cable or rod
that will not retract is a warning that the proper operation is compromised and you
need to address the inoperable mechanism.
If the shutter or cable/rod mechanism becomes inoperable, contact your
regulator and manufacturer immediately for advice. DO NOT attempt to free up
the shutter or cable/rod by mechanical means with the use of wrenches, hammers,
channel locks, levers, etc., These devices may cause more damage and are
prohibited. Such actions have been known to shear shutter handle bolts,
damage shutter handles, and bend handle shafts.
If a device has an inoperable shutter or cable/rod, the source holder should not
be removed without consulting the manufacturer.
ON/OFF Indicator
On applicable source holders test the ON/OFF indicator every six (6) months.
Testing the ON/OFF indicator means that the shutter indicator must indicate ON
and OFF properly. You can observe this operation when testing the shutter as
described above.
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39089-US-210509
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