ASNT STUDY GUIDE: Industrial Radiography Radiation
Safety With Questions And 100% SURE ANSWERS
Terms in this set (125)
THE SYMBOL (R) MEANS ROENTGEN
The acronym RAD means radiation absorbed dose
The roentgen (R) exposure is measured in AIR
The symbol mR means milliroentgen
One roentgen or 1 R is equal to 1 milliroentgen
The acronym rem stands for roentgen equivalent man
The initialism QF stands for quality factor
The quality factor for X-ray and gamma rays is 1
The quality factor for alpha (ray) particles is 1
Activity of radioactive material is measured in curies
Becquerels and curies are units of measurement decay rate
of:
ASNT STUDY GUIDE: Industrial Radiography Radiation Safety
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, Atoms that have excess energy and are unstable radioactive
are known as
Elementary particle units with a negative electrical electrons
charge and a mass approximately equal to 1/1840
that of a proton are
Positively charged elementary particles swith a protons
mass approximately equal to 1840 times that of an
electron, or 1 AMU, are known as
Uncharged elementary particles with a mass neutrons
nearly equal to that of a proton are called
The area known as the center of an atom is called nucleus
the
Any byproduct material that is encased in a sealed source
capsule designed to prevent leakage or escape of
the byproduct material is a:
A tube through which the radioactive source S tube
travels when inside a radiographic exposure
device is a/an
Survey meters must be calibrated at intervals not six months and/or after instrument servicing except for battery changes
to exceed:
A survey meter must becapable of measuring a 2 to 1000 mR/h (0.02 to 10 mSv/h)
range of
Becquerels and curies are units of measurement activity
of
An analog survey meter must be calibrated on 33% and 66% of the scale's potential
each scale at two points approximately
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