Quantcast External and Internal Radiation Dose Reduction - hdbk-1130-98_ch10230

 

Click here to make tpub.com your Home Page

Page Title: External and Internal Radiation Dose Reduction
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home

   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Back
Responsibilities for the ALARA Program - hdbk-1130-98_ch10229
Up
Radiological Worker Training - index
Next
Proper uses of shielding - hdbk-1130-98_ch10231


DOE-HDBK-1130-98
1.
Basic protective measures used to minimize external dose include:
Minimizing time in radiation areas
Maximizing the distance from a source of radiation
Using shielding whenever possible
Reducing the amount of radioactive material (source reduction)
a.
Methods for minimizing time
Reducing the time spent in a field of radiation will lower the dose received by the
workers.
1)
Plan and discuss the task thoroughly prior to entering the area. Use only the
number of workers actually required to do the job.
2)
Have all necessary tools present before entering the area.
3)
Use mock-ups and practice runs that duplicate work conditions.
4)
Take the most direct route to the job site if possible and practical.
5)
Never loiter in an area controlled for radiological purposes.
6)
Work efficiently and swiftly.
7)
Do the job right the first time.
8)
Perform as much work outside the area as possible. When practical, remove parts
or components to areas with lower dose rates to perform work.
9)
Do not exceed stay times. In some cases, the Radiological Control Organization
may limit the amount of time a worker may stay in an area due to various reasons.
This is known as "stay time." If you have been assigned a stay time, do not exceed
this time.
10)
(Insert facility-specific information.)
b. Methods for maximizing distance from sources of radiation
The worker should stay as far away as possible from the source of radiation.
1)
Stay as far away from radiation sources as practical given the task assignment. For
point sources (such as valves and hot spots), the dose rate follows a principle called
the inverse square law. This law states that if you double the distance, the dose
rate falls to 1/4 of the original dose rate. If you triple the distance, the dose rate
falls to 1/9 of the original dose rate.
37


Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc.