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Radar > Radiometric > Flashcards

Radiometric Flashcards

1
Q

What radiation field strength is proper for operation of PROTRAC detectors, in general?

A

0.05 to 1.5 mR/hr

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2
Q

Which source holder family can be loaded with more than a single source capsule?

A

SHLM

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3
Q

NORM is

A

Naturally occurring radioactive material

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4
Q

Per inch of vessel diameter, which application requires the highest source activity?

A

Density

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5
Q

40 inches is the practical maximum process path length for radiometric density measurement offered by VEGA because

A

Both source size and measurement resolution are the limiting factor

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6
Q

What benefit(s) does a radiometric process measurement provide?

A

Non - contact measurement
Maintenance free detectors
No process connection required

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7
Q

With the double encapsulation design of the source capsules, what can be said about their safety or design?

A

It is extremely unlikely for radioactive material to leak

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8
Q

On average, Americans receive about how much annual radiation dose just by living their everyday lives?

A

600 mREM/yr

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9
Q

What is the radiation specification for a typical source holder in North America?

A

5 mR/hr @ 1 foot

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10
Q

The Radiation Safety Principle known as “ALARA” stands for what?

A

As low as reasonably achievable

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11
Q

What are the 4 tools for Radiation Safety?

A

Time, Distance, Shielding, Planning

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12
Q

What is 1 of the 2 different types of licenses that a source holder can be distributed in the United States?

A

General or Specific licenses in the US

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13
Q

Radiometric continues level measurement is what type of measurement technique

A

an inferred

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14
Q

The ideal continuous level calibration linearizer should contain how many points?

A

5 to 10 gives good range

if you do more than 10 not providing a lot in your investment
less than 5 empty spots

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15
Q

True or False - Radiometric measurement systems are not accurate until a live calibration is performed on the process

A

True

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16
Q

When the level reading from a radiometric detector is in question, the first step should be:

A

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

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17
Q

Basic indisputable facts of radiometric measurement include:

A

Radiation doesn’t lie

infer measurement and the process value is determined based on the count rate

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18
Q

true for radiometric continuous level measurement:

A

Count rate is the foundation of the measurement
Radiometric systems tolerate high process pressures and temperatures
Calibration = linearization table

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19
Q

Advantage of VEGAs multi point density array system

A

They measure process density independently at each measurement point
a measurement error from one detector does not affect the other detectors from making measurements

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20
Q

Applications for Multi-Point Density Array system

A

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

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21
Q

What benefit(s) does a radiometric process measurement provide?

A

Non-contact measurement
Maintenance free detectors
No process connection required

22
Q

Radiometric continuous level measurement is _______ measurement technique

A

an inferred

23
Q

VEGA radiometric solutions make use of which two isotopes:

A

cobalt 60 and cesium 137

24
Q

In general, the proper radiation field strength for ProTrac detectors is:

A

0.05 to 1.5 mR/hr

25
Q

The heart of radiometric process measurement is:

A

count rate

26
Q

Which radiometric applications typically have 100% change in counts over span?

A

continuous level and point level

27
Q

Increased build-up inside the vessel will tend to cause the detector to read…

A

higher than it should

28
Q

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?

A

2 hours

29
Q

Low-hanging fruit on the radiometric sales tree is

A

detector upgrade business

30
Q

Which is the best-selling ProTrac continuous level detector?

A

FiberTrac 31

31
Q

To reduce CS137 radiation field strength by 50%, what thickness of steel shield is needed?

A

1/2”

32
Q

A change to which material property allows for radiometric measurement to be made?

A

Mass

33
Q

The ideal continuous level calibration linearizer should contain how many points?

A

5 to 10

34
Q

With the double-encapsulation design of the source capsules, what can be said about their safety or design?

A

it is extremely unlikely for radioactive material to leak

35
Q

If a radiometric level reads higher than it should, the problem might be:

A

someone installed new insulation between the vessel and detector
process material density decreased
a calibration (linearization) point is incorrect

36
Q

As the process material increases, the count rate:

A

decreases

37
Q

Which is the most sensitive ProTrac continuous level detector?

A

SoliTrac 31

38
Q

True or False: Radiometric measurement systems are not accurate until a live calibration is performed on the process.

A

true

39
Q

Which radiometric sensor is used for mass flow measurement of bulk solids?

A

weight trac 31

40
Q

Which output comes as a standard on every ProTrac detector:

A

relay

41
Q

The best data to collect in order to quote a ProTrac detector upgrade is:

A

survey meter reading at the existing detector

42
Q

The maximum operating temperature for ProTrac detectors is:

A

50 deg C for the FT 31 and 60 deg C for the others

43
Q

When our radiometric measurement systems ship out to the customer, they leave the factory in a condition that allows them to make ________ measurement:

A

a repeatable

44
Q

Which technologies offered by VEGA utilize electromagnetic energy to make the measurement:

A

radar

radiometric

45
Q

On average, Americans receive about how much annual radiation dose just by living their everyday lives?

A

600 mREM/yr

46
Q

When the level reading from a radiometric detector is in question, the first step should be:

A

Determine if the count rate change reliably indicates the process change

47
Q

A license from the NRC or a similar authority is required before we can deliver:

A

a source

48
Q

The Radiation Safety Principle known as ALARA stands for what?

A

As low as reasonable achievable

49
Q

ProTrac advantages over the competition include

A

Modern electronics packaging
easy setup with PLICSCOM, Bluetooth and PACTware
configuration using mobile app

50
Q

Industries that utilize radiometric process measurement systems include:

A

refining
mining
food processing

Radar (6 decks)

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