Generic Radiation Worker Training Test
Questions and CORRECT Answers|
UPDATED
Alpha Radiation
Penetrating Ability: Least penetrating ability of the 4 types; travels approximately
1 inch in air
Shielded by: A piece of paper, lightweight clothing, or outer layer of skin
Type Hazard: Internal hazard - can result in a high dose to sensitive organs
Major Source: Nuclear Fuel
Beta Radiation
Penetrating Ability: Travels a few feet in the air
Shielded by: Lightweight plastic or aluminum
Type Hazard: Eyes and skin are most susceptible to beta radiation. It can be an
internal hazard
Major Source: Most beta particles come from activated corrosion and fission
products
Additional Info: Personnel must work close to a beta source to receive much dose
,Gamma Radiation
Penetrating Ability: Very high, penetrates the whole body
Shielded by: Very dense material; usually lead and steel
Type Hazard: Whole body dose hazard
Major Source: Fission, fission products, and activation products in the primary
system piping
Additional info: Has no mass or electrical charge - it is pure energy
Neutron Radiation
Penetrating Ability: Very high
Shielded by: Water, paraffin, or concrete
Type Hazard: whole body dose hazard
Major Source: Mainly a problem only near the reactor in operation
Additional Info: Neutrons are freed from the nucleus by decay or fission and have
no electrical charge
Define TEDE
Total Effective Dose Equivalent. This is the total of a person's external dose and
internal dose
, Define External Dose
Comes from radiation sources located outside the body. The entire body, inside
and out, receives the dose. Most of the dose received by nuclear workers is
external
Define Internal Dose
Comes from radioactive material deposited inside the body. The majority of this
dose is to the organ(s) where the radioactive material is deposited. This normally
occurs if a person gets radioactive material inside the body by breathing it in or
swallowing it.
When is the highest risk to a cell?
The highest risk to a cell from radiation exposure is during cell division
Define Chronic Radiation Exposure
A series of small doses spread out over a long period such as months or years
Define Acute Radiation Exposure
Questions and CORRECT Answers|
UPDATED
Alpha Radiation
Penetrating Ability: Least penetrating ability of the 4 types; travels approximately
1 inch in air
Shielded by: A piece of paper, lightweight clothing, or outer layer of skin
Type Hazard: Internal hazard - can result in a high dose to sensitive organs
Major Source: Nuclear Fuel
Beta Radiation
Penetrating Ability: Travels a few feet in the air
Shielded by: Lightweight plastic or aluminum
Type Hazard: Eyes and skin are most susceptible to beta radiation. It can be an
internal hazard
Major Source: Most beta particles come from activated corrosion and fission
products
Additional Info: Personnel must work close to a beta source to receive much dose
,Gamma Radiation
Penetrating Ability: Very high, penetrates the whole body
Shielded by: Very dense material; usually lead and steel
Type Hazard: Whole body dose hazard
Major Source: Fission, fission products, and activation products in the primary
system piping
Additional info: Has no mass or electrical charge - it is pure energy
Neutron Radiation
Penetrating Ability: Very high
Shielded by: Water, paraffin, or concrete
Type Hazard: whole body dose hazard
Major Source: Mainly a problem only near the reactor in operation
Additional Info: Neutrons are freed from the nucleus by decay or fission and have
no electrical charge
Define TEDE
Total Effective Dose Equivalent. This is the total of a person's external dose and
internal dose
, Define External Dose
Comes from radiation sources located outside the body. The entire body, inside
and out, receives the dose. Most of the dose received by nuclear workers is
external
Define Internal Dose
Comes from radioactive material deposited inside the body. The majority of this
dose is to the organ(s) where the radioactive material is deposited. This normally
occurs if a person gets radioactive material inside the body by breathing it in or
swallowing it.
When is the highest risk to a cell?
The highest risk to a cell from radiation exposure is during cell division
Define Chronic Radiation Exposure
A series of small doses spread out over a long period such as months or years
Define Acute Radiation Exposure
