Occupied work areas surveys should be performed on a daily routine basis.
Most of the dose received by man-made sources of radiation is due to medical applications of radiation and radioactive materials.
General area dose rates should be recorded as the highest dose rate between the head and knee.
Attempting to remove contamination prior to maintenance is the most desirable method to provide radiological protection during maintenance on a highly contaminated component.
When removing radioactive contamination from the skin, your best choice would be a mild soap and warm water.
Tools or equipment are transferred from a contaminated area sealed in clear plastic bags.
Swipes/smears in a loose surface contamination survey should be kept separate from one another to avoid cross contamination.
If the skin is accidentally broken when working with a radioactive substance, immediately wash the wound under running water.
The basic principals of protection against external radiation hazards are Time, Distance, and Shielding. (ALARA)
ALARA paint is not a source of loose surface contamination.
Air showers are not a method of controlling exposure to airborne radioactivity.
A valid reason for performing radiation surveys is when shipping or receiving radioactive material.
The access route into a contaminated area is normally across a step off pad.
A contamination survey requires the following steps be preformed in this order: Get smears and a map, pre number smears and the map, dress properly and enter the area, pick survey spots on floor walls and equipment, drag smear in a 'S' pattern of 18 inches, fold smear and record data.
You would exercise 'Stop work authority' if the job coverage CAM trending up and the last two pipe fitters have facial contamination on their exit frisk.
ALARA concept is, follow the ALARA program determining if all administrative, engineering, operational and radiological controls and procedures are in place and being followed.
Temperature inversion is not a source of radioactive contamination. When a worker reports to the control point with lost dosimetry, you would not issue stop work authority.
Inner pair of gloves is the last thing you remove when undressing.
The primary responsibility for control of a workers exposure lies with the worker.
The purpose of any radiation protection program is the subsequent protection and dose assessment of plant personnel from the collective radiation, both atomic and nuclear in origin.
An RWP is designed to specify radiation safety and control requirements in areas where a significant exposure to personnel is possible. It also provides an exposure recording system and a system for recording sources, job types and functions where personnel exposures occur.
Valid reasons to perform a radiological survey are: provide information for RWP's, give current radiological data, and document compliance with regulations.
