Radiation Protection Practices and Limits.

Official Practice Quiz

Select the statements below that accurately describe an ALARA Program.

• Trigger levels should be established to identify when an ALARA TEDE Evaluation should be performed.

• An ALARA Program must be maintained to comply with 10CFR20.

• Actions to reduce collective and individual dose should be pursued regardless of cost.

• Worker dose is optimized when dose is minimized without sacrificing the benefits of authorized activities.

• The main purpose of an ALARA Program is to ensure workers do not exceed dose limits.

• Trigger levels should be established to identify when an ALARA TEDE Evaluation should be performed.

• An ALARA Program must be maintained to comply with 10CFR20.

• Worker dose is optimized when dose is minimized without sacrificing the benefits of authorized activities.

Radiation exposures to both individuals and groups of workers should be kept ALARA to minimize the overall risk of:

______

Stochastic Effects

The three main processes to ensure the dose to workers is maintained ALARA include work planning, administrative controls, and:

______

Engineering Controls

Select the true statements below regarding an ALARA TEDE Evaluation:

• It is during a comprehensive plan to keep exposures ALARA during a specific work activity.

• A plan must be developed for all work activities.

• It is developed during the work planning phase.

• It can be used in lieu of a Radiation Work Permit.

• It is during a comprehensive plan to keep exposures ALARA during a specific work activity.

• It is developed during the work planning phase.

Select the true statements below regarding General Area and contact dose rates.

• Contact dose rates are used to determine how an area should be posted.

• A general area dose rate is 30 cm from a component or a surface that the radiation penetrates.

• Contact dose rates can identify when a worker needs to wear extremity dosimetry.

• A general area dose rate is 30 cm from a component or a surface that the radiation penetrates.

• Contact dose rates can identify when a worker needs to wear extremity dosimetry.

Internal dose must be monitored and reported to the exposed individual and the NRC if the CEDE is greater than:

______

10% of 10CFR20

The term ALARA is an acronym that stands for:

• As Low As Reasonably Allowable

• As Low As Regulatory Approved

• As Low As Reasonably Achievable

• As Low As Required Acceptance

As Low As Reasonably Achievable

An RP technician providing radiological oversight of a work activity should help the workers by performing tasks for which they are not proficient.

• True

• False

False

Select the statements below that accurately describe loose versus fixed contamination.

• Loose surface contamination is also referred to as removable contamination.

• Fixed contamination can become airborne and increase the potential for an intake.

• Fixed contamination does not pose an external radiation hazard to workers.

• Activity on a surface after it has been thoroughly cleaned can be assumed to be fixed contamination.

• Fixed contamination can leach from the surface to become loose contamination.

• Loose surface contamination is also referred to as removable contamination.

• Activity on a surface after it has been thoroughly cleaned can be assumed to be fixed contamination.

• Fixed contamination can leach from the surface to become loose contamination.

Select the statement below that accurately describes concerns with alpha contamination (transuranics).

• Alpha emitters are large and heavy nuclei that do not tend to become airborne.

• Alpha emitters are rapidly eliminated from the body so dose from an intake is limited.

• Alpha radiation poses a significant potential for dose to the skin when exposed to fixed contamination.

• Alpha concentration limits are lower than beta-gamma limits because the Quality Factor for alpha is 20.

Alpha concentration limits are lower than beta-gamma limits because the Quality Factor for alpha is 20.

The term used to describe when loose surface contamination is allowed to contaminate a clean area or component is called:

______

Cross-Contamination

Select the statements below that describe activities that can spread contamination.

• Operating a valve in a radioactive system.

• Sweeping in a contaminated area.

• Bagging materials when removing them from a contaminated area.

• Removing insulation on a non-radioactive system.

• Disassembly of a component in a radioactive system.

• Sweeping in a contaminated area.

• Disassembly of a component in a radioactive system.

A Step-Off-Pad should always be used when workers are exiting a contaminated area.

• True

• False

True

What element, including isotopes, tend to concentrate in the thyroid if ingested or inhaled?

Iodine

Airborne noble gas presents a significant internal hazard if respiratory protection is not worn.

• True

• False

False

Select the isotopes below that can be sampled in air by drawing the air through a paper filter.

• Co-60

• I-131

• H-3

• Kr-85

• Am-241

• Co-60

• Am-241

Select the isotopes below that are a primary concern for airborne radioactivity in a nuclear power plant.

• Mn-56

• Ar-41

• Co-58

• Rn-222

• I-131

• Mn-56

• Co-58

• I-131

Select the statements below that describe the purpose of Radiation Work Permits (RWP).

• Ensure that everyone who enters a Radiologically Controlled Area understands radiological conditions.

• Identify important maintenance steps.

• Establish requirements to monitor radiation exposure.

• Identify potential fall hazards.

• Establish protective measures for radiological hazards.

• Ensure that everyone who enters a Radiologically Controlled Area understands radiological conditions.

• Establish requirements to monitor radiation exposure.

• Establish protective measures for radiological hazards.

Workers are not allowed to enter the Radiologically Controlled Area unless they have reviewed and understand the RWP governing their work.

• True

• False

True

The volume of radioactive waste can be minimized by preventing cross-contamination of materials and equipment.

• True

• False

True