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Aerial Lift Safety in Construction, (2-Hours)

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Module 9: RF Radiation

August 31, 2021

[vc_row][vc_column][ultimate_heading main_heading=”RF Radiation” alignment=”left”]The RF radiation hazard-warning symbol below shall be used in the identification of RF radiation hazards. Laser caution and warning signs shall be in accordance with ANSI Z136.1.[/ultimate_heading][vc_single_image image=”12055″ img_size=”full” alignment=”center”][vc_single_image image=”12056″ img_size=”full” alignment=”center”][vc_single_image image=”12059″ img_size=”full” alignment=”center” title=”USACE-NAVFAC RF Sign Requirements”][ultimate_heading main_heading=”Sign Posting” sub_heading_color=”#000000″ alignment=”left” main_heading_font_family=”font_family:Roboto|font_call:Roboto” sub_heading_font_family=”font_family:Roboto|font_call:Roboto”]The Radiation Safety Officer (RSO) must  post in a conspicuous location a sign or signs bearing the standard Laser Warning Symbol and the following appropriate words:[/ultimate_heading][vc_separator color=”black” border_width=”3″][vc_column_text]

Caution, Radiation Area

“Caution, Radiation Area” signs are used where the radiation field is equal to or greater than 5 mrem (0.05 mSv) in any 1 hour and less than 100 mrem (1 mSv) in any 1 hour at 30 cm from the radiation source.

Caution, High Radiation Area

“Caution, High Radiation Area” signs are used where radiation field is equal to or greater than 100 mrem (1 mSv) in any 1 hour at 12 in (30 cm) from the radiation source and less than 500 rads (5 Gy) in any 1 hour at 3.3 ft (1 m) from the radiation source

Grave Danger, Very High Radiation Area

“Grave Danger, Very High Radiation Area” signs are used in areas where the radiation field is equal to or greater than 500 rads (5 Gy) in any 1 hour

Caution, Airborne Radioactivity Area

“Caution, Airborne Radioactivity Area” signs are used in rooms and enclosures, or in areas where airborne radioactive material concentrations are greater than the derived air concentration (DAC) limits listed in 10 CFR 20, Appendix B or where concentrations (excluding Radon- 222) exist to such a degree that an individual present in the area without respiratory protective equipment could exceed, during the hours an individual is present in a week, an intake of 0.6% of the annual limit on intake (ALI) or 12 DAC-hours

Caution, Radioactive Material

The “Caution, Radioactive Material” sign is used in areas or rooms where quantities of radioactive materials in excess of ten times the 10 CFR 20, Appendix C quantities are used or stored.[/vc_column_text][vc_separator color=”black” border_width=”3″][vc_empty_space][ultimate_heading main_heading=”Module 9 Quiz” margin_design_tab_text=””]Time for the next short quiz. Click on the quiz link below to begin. A score of 70% or higher is required to pass. Once you are done, you will be taken to the next module. Good luck with the quiz and we’ll see you over in Module 10.[/ultimate_heading][/vc_column][/vc_row]