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Section 12: Maintenance, Safety, and

Troubleshooting

standard also requires ovens to have two independent interlock systems

that prevent the oven from generating microwaves the moment that

the latch is released or the door of the oven is opened. The FDA has

stated that ovens that meet its standards and are used according to

the manufacturer's recommendations are safe for consumer and

industrial use. More information is available from: http://www.fda.gov/cdrh.

The EPA has, in the past, considered developing federal guidelines

for public exposure to RF radiation. However, EPA activities related

to RF safety and health are presently limited to advisory functions.

For example, the EPA now chairs an Inter-agency Radio frequency

Working Group, which coordinates RF health-related activities among

the various federal agencies with health or regulatory responsibilities

in this area.

OSHA is responsible for protecting workers from exposure to

hazardous chemical and physical agents. In 1971, OSHA issued a

protection guide for exposure of workers to RF radiation [29 CFR

1910.97]. However, this guide was later ruled to be only advisory

and not mandatory. Moreover, it was based on an earlier RF exposure

standard that has now been revised. At the present time, OSHA

uses the IEEE and/or FCC exposure guidelines for enforcement

purposes under OSHA's "general duty clause" (for more information

see: http://www.osha-slc.gov/SLTC/radiofrequencyradiation./index.html)

NIOSH is part of the U.S. Department of Health and Human Services. It

conducts research and investigations into issues related to occupational

exposure to chemical and physical agents. NIOSH has, in the past,

undertaken to develop RF exposure guidelines for workers, but

nal guidelines were never adopted by the agency. NIOSH conducts

safety-related RF studies through its Physical Agents Effects Branch in

Cincinnati,Ohio.

The NTIA is an agency of the U.S. Department of Commerce and

is responsible for authorizing Federal Government use of the RF

electromagnetic spectrum. Like the FCC, the NTIA also has NEPA

responsibilities and has considered adopting guidelines for evaluating

RF exposure from U.S. Government transmitters such as radar and

military facilities.

The Department of Defense (DOD) has conducted research on the

biological effects of RF energy for a number of years. This research is

now conducted primarily at the U.S. Air Force Research Laboratory

located at Brooks Air Force Base, Texas. The DOD Web site for RF

biological effects information is listed with other sites in conjunction

with a question on other sources of information, below.

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