
RBC Shield, LLC
"The Complete WMD Protection Solution"
RBC Shield, LLC
Jim Rodgers
MS, CFE, CHS-III
Managing Member
JRodgers@rbcshield.com
443.745-7752
Introduction to Shelter-in-Place (S.I.P) Shielding Calculation
On the following page you will be able to determine how long you can stay in an RBC Shield® enhanced shelter before you reach the limit of annual radiological exposure deemed acceptable by OSHA. Beyond that time, the shelter should be evacuated and the occupants re-located to a point outside the danger zone.
Using a scientifically and mathematically based calculating tool, you can adjust the three most important variables that impact your S.I.P. time: amount of radiation, amount of lead shielding, distance from the radioactive source.
Using the RBC Shield® S.I.P. Calculator you can:
Once you have made your choices, and press "CALCULATE S.I.P" you will get an immediate display of the number of days it is safe to stay in your RBC Shield® enhanced shelter under the conditions you have selected.
IMPORTANT: The calculated result assumes you have an adequate air supply!
A note to mathematicians: When distances are doubled, the amount of time one can remain in a shelter is quadrupled. The calculator formulas apply the "law of inverse squares" because of the nature of radioactivity and the impact on exposure caused by distance.