What does the radioactive hazard symbol mean?
The presence of this symbol (a magenta or black propeller on a yellow background) on a sign denotes the need for caution to avoid contamination with or undue exposure to atomic radiation.
What sign is hazards on?
Understanding the NFPA Hazard Diamond The hazard diamond on the caution sign uses a color-coded system with numbers to signal the degree of health hazard (blue), flammability hazard (red), and instability hazard (yellow). The color-coded number system was developed by the National Fire Protection Association (NFPA).
What is the symbol used for radiation?
trefoil
An officially prescribed magenta or black trefoil on a yellow background, which must be displayed where certain quantities of radioactive materials are present or where certain doses of radiation could be received.
What does the exclamation mark hazard symbol mean?
The symbol within the pictogram is an exclamation mark. This symbol indicates that hazardous products with this pictogram can cause certain health effects for example, skin irritation, eye irritation, and/or. skin sensitization.
When should the radiation hazard symbol be used?
The IAEA has recommended that the symbol be used on IAEA category 1, 2 and 3 sealed radiation sources (danger- ous sources that can cause death or serious injury).
Where should radiation warning signs be posted?
controlled radiation area
Warning signs must be posted in each controlled radiation area to indicate the presence and the degree of the hazard present in the area. Signs indicating “authorized personnel only” refer to approved radiation workers who directly report to the Radiation Supervisor assigned to the area by the RSC.
What are hazard codes?
Hazard statements are assigned a unique numerical code which can be used as a handy reference when translating labels and Safety Data Sheets written in other languages. The codes are not a substitute for writing out the entire text of the statement.
What color are radioactive signs?
Basic Radiation Tri-Foil Sign Symbol can be magenta or black, on a yellow background. Sign must be posted where radioactive materials are handled or where radiation-producing equipment is used. Sign is used as a warning to protect people from being exposed to radioactivity.
Where did the radiation symbol come from?
The life of the radioactive ‘trefoil’ began in 1946 at the University of California, Berkeley. The symbol was first ‘doodled’ by members of a research group headed by Nels Garden, who wrote in a letter that the symbol “would best symbolize the degree of hazard, type of activity, etc., but which was simple in design”.