NDT RT 1 QUIZ 3 RADIATION SAFTEY
How many becquerels (Bq) are in a curie? - ANS-37 X 109 Bq or 37 GBq... (*1 Ci)
A curie is the original unit of radioactivity defined because the radiation emitted by way of
one gram of: - ANS-radium
A dose of 2 rad of alpha particles is absorbed by means of human tissue. The equivalent
dose acquired by way of the tissue is: - ANS-four hundred mSv
ANS, an SI unit of dose absorbed, is a sievert. Exposure to radiation is measured in: -
ANS-roentgens or sieverts
For a radiation operator, the once a year dose restriction allowed for the lens of the attention
is: - ANS-15 rem
Gamma resources have one essential safety issue that X-ray devices don't, that is: -
ANS-gamma radiation can not be shut off
How many survey meters are required to be present on a process site in line with radiation
source, until in any other case said in an character's working and emergency (O&E)
procedures guide? - ANS-as a minimum 1
Radiation can't be detected through which of the following? - ANS-Human senses (scent,
flavor, sight, listening to and touch)
When operating with gamma and X-ray assets, radiation protection is critical because it can
harm: ANS-living cells Roentgen equivalent mammal or man (rem) in the International
System of Units is expressed in: - ANS-sieverts
Roentgen equivalent mammal or man (rem) is calculated the usage of which formula? -
ANS-rem = rad X QF
Since X-ray and gamma ray radiation have a first-class aspect of 1 and 1 R = 1 rad, what
would be the rem for 1 R publicity? - ANS-1 rem
The definition of a radiation absorbed dose (rad) is: - ANS-the unit dimension of radiation
absorption by using human beings
The dose fee a radiographer obtained is 15 mR/h the usage of an iridium-192 source. To
lessen the publicity to much less than 2 mR/h, what number of lead 1/2-existence fee layers
are required? - ANS-4 The nice thing for X-rays is: - ANS-1
The radiation degree at a area is 6 mR/h (60 uSv/h). If someone is permitted a maximum
dose of 60 uSv, how long may she or he stay there? - ANS-60 min
The SI unit for radioactivity is the becquerel (Bq), which is same to: - ANS-one disintegration
per 2d
The unit of measure used for exposure to radiation in air that produces 1 esu is the: -
ANS-roentgen (R)
Three methods of minimizing radiation publicity are: - ANS-Time, distance, protecting
What is the most calibration c program languageperiod for pocket dosimeters? - ANS-365
days
What is the maximum radiation degree authorised in an unrestricted vicinity? - ANS-2 mR/h
or 0.02 mSv/h
What is the permissible overall powerful dose for a radiographer in line with yr? - ANS-5 rem
(zero.05 Sv)
How many becquerels (Bq) are in a curie? - ANS-37 X 109 Bq or 37 GBq... (*1 Ci)
A curie is the original unit of radioactivity defined because the radiation emitted by way of
one gram of: - ANS-radium
A dose of 2 rad of alpha particles is absorbed by means of human tissue. The equivalent
dose acquired by way of the tissue is: - ANS-four hundred mSv
ANS, an SI unit of dose absorbed, is a sievert. Exposure to radiation is measured in: -
ANS-roentgens or sieverts
For a radiation operator, the once a year dose restriction allowed for the lens of the attention
is: - ANS-15 rem
Gamma resources have one essential safety issue that X-ray devices don't, that is: -
ANS-gamma radiation can not be shut off
How many survey meters are required to be present on a process site in line with radiation
source, until in any other case said in an character's working and emergency (O&E)
procedures guide? - ANS-as a minimum 1
Radiation can't be detected through which of the following? - ANS-Human senses (scent,
flavor, sight, listening to and touch)
When operating with gamma and X-ray assets, radiation protection is critical because it can
harm: ANS-living cells Roentgen equivalent mammal or man (rem) in the International
System of Units is expressed in: - ANS-sieverts
Roentgen equivalent mammal or man (rem) is calculated the usage of which formula? -
ANS-rem = rad X QF
Since X-ray and gamma ray radiation have a first-class aspect of 1 and 1 R = 1 rad, what
would be the rem for 1 R publicity? - ANS-1 rem
The definition of a radiation absorbed dose (rad) is: - ANS-the unit dimension of radiation
absorption by using human beings
The dose fee a radiographer obtained is 15 mR/h the usage of an iridium-192 source. To
lessen the publicity to much less than 2 mR/h, what number of lead 1/2-existence fee layers
are required? - ANS-4 The nice thing for X-rays is: - ANS-1
The radiation degree at a area is 6 mR/h (60 uSv/h). If someone is permitted a maximum
dose of 60 uSv, how long may she or he stay there? - ANS-60 min
The SI unit for radioactivity is the becquerel (Bq), which is same to: - ANS-one disintegration
per 2d
The unit of measure used for exposure to radiation in air that produces 1 esu is the: -
ANS-roentgen (R)
Three methods of minimizing radiation publicity are: - ANS-Time, distance, protecting
What is the most calibration c program languageperiod for pocket dosimeters? - ANS-365
days
What is the maximum radiation degree authorised in an unrestricted vicinity? - ANS-2 mR/h
or 0.02 mSv/h
What is the permissible overall powerful dose for a radiographer in line with yr? - ANS-5 rem
(zero.05 Sv)
