Radiometric Flashcards
What radiation field strength is proper for operation of PROTRAC detectors, in general?
0.05 to 1.5 mR/hr
Which source holder family can be loaded with more than a single source capsule?
SHLM
NORM is
Naturally occurring radioactive material
Per inch of vessel diameter, which application requires the highest source activity?
Density
40 inches is the practical maximum process path length for radiometric density measurement offered by VEGA because
Both source size and measurement resolution are the limiting factor
What benefit(s) does a radiometric process measurement provide?
Non - contact measurement
Maintenance free detectors
No process connection required
With the double encapsulation design of the source capsules, what can be said about their safety or design?
It is extremely unlikely for radioactive material to leak
On average, Americans receive about how much annual radiation dose just by living their everyday lives?
600 mREM/yr
What is the radiation specification for a typical source holder in North America?
5 mR/hr @ 1 foot
The Radiation Safety Principle known as “ALARA” stands for what?
As low as reasonably achievable
What are the 4 tools for Radiation Safety?
Time, Distance, Shielding, Planning
What is 1 of the 2 different types of licenses that a source holder can be distributed in the United States?
General or Specific licenses in the US
Radiometric continues level measurement is what type of measurement technique
an inferred
The ideal continuous level calibration linearizer should contain how many points?
5 to 10 gives good range
if you do more than 10 not providing a lot in your investment
less than 5 empty spots
True or False - Radiometric measurement systems are not accurate until a live calibration is performed on the process
True
When the level reading from a radiometric detector is in question, the first step should be:
Determine if the count rate change reliably indicates the process change
DO NOT just get in another liniarizer - or put in a new calibration point
Basic indisputable facts of radiometric measurement include:
Radiation doesn’t lie
infer measurement and the process value is determined based on the count rate
true for radiometric continuous level measurement:
Count rate is the foundation of the measurement
Radiometric systems tolerate high process pressures and temperatures
Calibration = linearization table
Advantage of VEGAs multi point density array system
They measure process density independently at each measurement point
a measurement error from one detector does not affect the other detectors from making measurements
Applications for Multi-Point Density Array system
Desalters (refining - separate the cruide oil from the water and salt)
Acid Settlers (HF) (refining- alkylation produces additive to increase octane rating of fuel)
Free water knockout vessels (3 phase separator)
reactor vessels - thick walled vessel, high temperatures and pressures
What benefit(s) does a radiometric process measurement provide?
Non-contact measurement
Maintenance free detectors
No process connection required
Radiometric continuous level measurement is _______ measurement technique
an inferred
VEGA radiometric solutions make use of which two isotopes:
cobalt 60 and cesium 137
In general, the proper radiation field strength for ProTrac detectors is:
0.05 to 1.5 mR/hr
The heart of radiometric process measurement is:
count rate
Which radiometric applications typically have 100% change in counts over span?
continuous level and point level
Increased build-up inside the vessel will tend to cause the detector to read…
higher than it should
If you are in North America and standing 12” from a VEGA source holder containing the maximum source size, how long would you need to stand there to get the same radiation exposure as an X-ray?
2 hours
Low-hanging fruit on the radiometric sales tree is
detector upgrade business
Which is the best-selling ProTrac continuous level detector?
FiberTrac 31
To reduce CS137 radiation field strength by 50%, what thickness of steel shield is needed?
1/2”
A change to which material property allows for radiometric measurement to be made?
Mass
The ideal continuous level calibration linearizer should contain how many points?
5 to 10
With the double-encapsulation design of the source capsules, what can be said about their safety or design?
it is extremely unlikely for radioactive material to leak
If a radiometric level reads higher than it should, the problem might be:
someone installed new insulation between the vessel and detector
process material density decreased
a calibration (linearization) point is incorrect
As the process material increases, the count rate:
decreases
Which is the most sensitive ProTrac continuous level detector?
SoliTrac 31
True or False: Radiometric measurement systems are not accurate until a live calibration is performed on the process.
true
Which radiometric sensor is used for mass flow measurement of bulk solids?
weight trac 31
Which output comes as a standard on every ProTrac detector:
relay
The best data to collect in order to quote a ProTrac detector upgrade is:
survey meter reading at the existing detector
The maximum operating temperature for ProTrac detectors is:
50 deg C for the FT 31 and 60 deg C for the others
When our radiometric measurement systems ship out to the customer, they leave the factory in a condition that allows them to make ________ measurement:
a repeatable
Which technologies offered by VEGA utilize electromagnetic energy to make the measurement:
radar
radiometric
On average, Americans receive about how much annual radiation dose just by living their everyday lives?
600 mREM/yr
When the level reading from a radiometric detector is in question, the first step should be:
Determine if the count rate change reliably indicates the process change
A license from the NRC or a similar authority is required before we can deliver:
a source
The Radiation Safety Principle known as ALARA stands for what?
As low as reasonable achievable
ProTrac advantages over the competition include
Modern electronics packaging
easy setup with PLICSCOM, Bluetooth and PACTware
configuration using mobile app
Industries that utilize radiometric process measurement systems include:
refining
mining
food processing
