Radiation symbol

Figure 2. X-Ray data for NaY zeolite-V2Os (R = 0.50, Cu Ka radiation). Symbols are defined as follows , NaY zeolite A, V205 and , NaV6015.

Labeling. All analytical x-ray equipment shall be labeled with a readily discernible sign bearing the radiation symbol and the words (1) CAUTION - HIGH INTENSITY X-RAY BEAM on the x-ray source housing and (2) CAUTION RADIATION - THIS EQUIPMENT PRODUCES RADIATION WHEN ENERGIZED near any switch that energizes the x-ray tube. 

Radiation areas should be marked with the radiation symbol shown in Fig. 16.16 and with cautionary signs. If necessary, the radiation area should be roped off or, if it is a room, should be locked to keep people out. 

Figure 16.16 The standard radiation symbol with dimensions as shown has a yellow background, with the hatched area being magenta or purple.

Category I white radiation symbol black on white background... 

Fume hoods used for radioactive matedals should be marked RADIOISOTOPE HOOD and in addition should be labeled with a CAUTION—RADIOACTIVE MATERIALS sign bearing the standard radiation symbol. The isotopes being used should be identified on the label. Under some circumstances, specialized additional signs may be needed. 

Many laboratories conduct operations which do not require the use of radioactive materials, in the same space as those in which radioactive materials are employed. In many of these instances, different personnel are employed in the two programs. Nonusers of radioisotopes should be made sufficiently aware of the procedures required for the safe, legal use of radiation so that they will neither inadvertently violate any safety requirements for the use of byproduct radioactive materials, nor misunderstand any actions of the employees involved with radiation. While the licensed users of radioactive materials are present, they can and must take precautions to avoid exposing the other persons in the laboratory unnecessarily to radiation, but when they are not present, the nonusers need to be aware of the areas where radioactive sources and waste are stored and areas they should avoid if there is any possibility of contamination. If proper security procedures are followed, the latter should theoretically not be possible. Any area containing radioactive materials should be clearly marked with signs bearing the radiation symbol and the label ... 

The licenseemustposteach areaorroom in which an amount of licensed material more than 10 times the quantity specified in Appendix C to 10 CFR Part 20 is used or stored with a conspicuous sign or signs bearing the radiation symbol and the words CAUTION, RADIOACTIVE MATERIALS or DANGER, RADIOACTIVE MATERIALS. 

A Radiation Area within a restricted area is an area accessible to personnel where radiation exists (according to the legaldefinition)arising in whole orin part fromlicensed material at such levels that a major portion of the body could receive a dose of 5 mrem (0.05 mSv) in 1 hour, or in excess of 100 mrem (1 mSv) in 5 consecutive days. A Radiation Area must be conspicuously posted with one or more signs bearing the radiation symbol and the words... 

Warnings Warnings should mark locations and equipment where there are ionizing radiation sources. Figure 22-2 shows the standard ionizing radiation symbol. Packaging and... 

FIGURE 23.8 Radiation symbol used as a warning of its presence. 

Type of Radiation Symbols Mass Number Charge Composition... 

FIGURE 7.3.2.1 Radiation Symbol. This symbol is found on signs in laboratories where radiation is used. In the U.S. the symbol is often pink on a yellow background. This symbol is required to be used in radiation safety programs to identify sources of radiation. 

Type of Radiation Symbol Change in Nucleus Mass Number Charge... 

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION, Basic Ionizing Radiation Symbol, ISO 361, ISO, Geneva (1975). 

---