Safety Guidelines for Radio-frequency Radiation Exposure

Radiation Safety UpdateWeb

High powered wireless antennas have been recently installed in some areas on UCSF campuses, e.g., Milberry Union east tower roof.

When active, these antennas produce radiofrequency radiation (RF) which is regulated by the Federal Communications Commission (FCC) and CalOSHA.

Exposure limits/Health Effects/ Cal OSHA limits average maximum power density of 10 mW/cm2 (milliwatts per square cm)

Multilingual warning signs will be placed so that they may be clearly seen at the approach to the exposure zone where the base station antennas are installed.  The exposure zones delineate areas where RF exceeds allowable exposure limits and will be clearly marked by tape or paint.

The warning sign will indicate cellular company and EH&S contact information for questions or concerns. 

Example:

Radio Frequency Sign

FM and/or contractors must make arrangements with the cellular company to have the antenna turned off prior to entry into identified exposure zones on campus.

References: 

FCC RF Regulations

California Code of Regulations, Title 8, Section 5085. Radiofrequency and Microwave Radiation.

ANSI Standards