Code of Massachusetts Regulations › 105 CMR - DEPARTMENT OF PUBLIC HEALTH › Title 105 CMR 122.000 - Nonionizing Radiation Limits For: The General Public From Non-occupational Exposure To Electromagnetic Fields, Employees From Occupational Exposure To Electro-magnetic Fields, And Exposure From Microwave Ovens › Section 122.006 - Definitions

Current through Register 1525, July 5, 2024
As used in
				105 CMR 122.000, the
				following words and phrases shall have the following meanings:
Accessible to the Public
means areas
				not under the control of owner or operator of the facility.
Amateur
means a person owning or
				operating a radiofrequency machine as a hobby.
Declared pregnant woman
means a woman
				who has voluntarily informed her employer, in writing, of her pregnancy and the
				estimated date of conception.
Department
means the Massachusetts
				Department of Public Health.
Director
means the Director of the
				Radiation Control Program of the Massachusetts Department of Public
				Health.
Duty cycle
means the time that the RF
				field is on, divided by the sum of the time the RF is on and off, during the
				operation cycle.
Employer
means any person, firm,
				organization or other legal entity having the control or right to control a
				source of electromagnetic radiation, including but not limited to proprietor,
				lessee, and/or bailee.
Effective Radiated Power (ERP)
means
				the power supplied to an antenna multiplied by the relative gain of the antenna
				in a given direction compared to a reference antenna. Below 1 GHz, and if
				unspecified, the reference antenna is a dipole. For frequencies above or equal
				to 1 GHz, the reference antenna is an isotropic antenna. The term effective
				radiated isotropic power is customarily used for frequencies equal to or above
				1 GHz.
Exposure
occurs whenever and wherever
				an individual is subjected to electric, magnetic, or electromagnetic fields,
				taking into account both level of field strength and length of time.
External surface
means the outside
				surface of the cabinet or enclosure provided as part of the RF machine source,
				including doors, door handles, latches, and control knobs.
Facility
means any location in which
				one or more radiofrequency machine(s) is (are) located, and which is owned,
				controlled, or maintained by the same person. In the case where a structure has
				multiple sources, each person who owns, controls, or maintains a radiofrequency
				machine or machines shall be considered to have a separate facility at that
				same site.
Far Field Region
means the region in
				which an electromagnetic field is predominantly plane wave in character. There
				is no precise boundary between the non- far field regions and the far field
				region. The approximate distance from the radiating device at which the far
				field region may be considered to begin depends upon several factors, including
				the frequency of the electromagnetic radiation and the physical characteristics
				of the radiating device. In general this distance is approximately equal to
				2D2 /[LAMDA] where D is the largest dimension of the
				radiating device facing the direction of interest and [LAMDA] is the wave
				length.
FCC
means Federal Communications
				Commission.
Hertz
means unit of frequency equal to
				one cycle per second.
Individual
means any human
				being.
Industrial Establishments
shall
				include manufacturing facilities, factories, workshops, mechanical facilities,
				laboratories, mercantile facilities, educational institutions, medical
				facilities, and all other buildings or parts thereof where such operations or
				activities such as: manufacturing, assembly, storage, research, broadcasting,
				therapy, testing, transfer and removal are carried on.
Intermittent Operation
means an
				operation where the radiofrequency machine does not normally continually
				operate for a period of 30 minutes or more at one time and generally the
				transmitter operation is random in time.
Machine
means a machine that emits
				radiofrequency (RF) electromagnetic radiation during operation.
Microwave Oven
means a commercially
				manufactured oven which is designed to heat, cook, or dry food through the
				application of radiofrequency electromagnetic radiation, and which is designed
				to operate at a frequency of 915 MHz and/or 2450 MHz.
Near-field
means the region of the
				electromagnetic field around a radiofrequency radiator in which the electric
				and magnetic fields do not have a fixed ratio from point to point. The
				near-field can be considered to extend from the source to points where a
				far-field description is valid.
Nonionizing Radiation (NIR)
means the
				electromagnetic fields or energy in space for frequencies of the
				electromagnetic spectrum from ten kilohertz (kHz) to 100 Gigahertz (GHz). The
				measures of such "radiation", electromagnetic fields or energy are power flux
				(milliwatts per square centimeter), or mean-squared-electric-field
				(E)2,(V/m)2 or
				mean-squared-magnetic- field (H)2,
				(A/m)2. In some cases only
				(E)2 or (H)2 is
				applicable (e.g., certain near fields or fields at low frequency) and in other
				cases (e.g., the microwave far-field conditions) the power flux is more
				applicable. Even where only the measures of either
				(E)2 or (H)2 is of
				concern, it has become customary to express the field quantities in terms of
				equivalent (far-field, plane-wave) power densities. NIR is used interchangeably
				with the terms "RF radiation", "electromagnetic radiation" or "electromagnetic
				energy".
Nonionizing Radiation (NIR) Worker
means an individual who has been informed by his or her employer that
				activities inconnection with their employment potentially involve access to
				areas exposed to radiofrequency radiation resulting from operation of a machine
				at the Place of Employment, where the exposure may exceed that allowed by
				105
				CMR 122.015.
Person
means any individual, entity,
				corporation, partnership, firm, association, trust, estate, public or private
				institution, group, agency, political subdivision of this state, and other
				state or political subdivision or agency thereof, and any legal successor,
				representative agent or agency of the foregoing.
Place of Employment
means every place,
				whether indoors, or outdoors, or underground, and the areas appurtenant
				thereto, into, in or upon which any employee goes, or remains, either
				temporarily or regularly, in order to perform required duties in the course of
				his or her employment.
Personal Wireless Services (PWS)
means
				facilities licensed by the Federal Communications Commission under Title 47
				part 24.
Public or Member of the Public
means
				all members of society, including the unborn. As used in 105 CMR 122.006, it
				does not include employees of a facility who have been informed that their
				employment potentially involves being exposed to electromagnetic
				radiation.
Radiating Device
means the antenna,
				leakage port or other part of a radiofrequency machine which emits
				radiofrequency electromagnetic radiation, excluding:
(1) those machines radiating at frequencies between 300 kHz and
				100 GHz for which the effective radiating power is seven watts or less;
(2) machine components which are not in themselves capable of,
				or designed for, radiation of an RF field; and
(3) the signal generation portion of automatic or other test
				equipment designed to deliver a signal stimulus using coaxial or shielded
				cables to a device being tested.
Radiation Control Program
means the
				Radiation Control Program of the Massachusetts Department of Public
				Health.
Radiofrequency (RF)
means in the
				frequency range of 10 kilohertz (kHz) to 100 gigahertz (GHz).
Radiofrequency Exposure Limits (RFEL)
means the non-occupational limits for the general public to electromagnetic
				radiation in terms of the mean squared electric (E)2
				and magnetic (H)2 field strengths or in terms of the
				equivalent plane wave free-space power density (when applicable), as a function
				of frequency, as given in Table 1,
				105
				CMR 122.015 and the occupational limits for
				employees, as given exposure in Table 1,
				105 CMR
				122.100.
Radiofrequency (RF) Site
means a fixed
				structure whose sole purpose is to provide a location for RF facilities.
Radiating Device
means the antenna,
				leakage port or other part of a machine which emits radiofrequency
				electromagnetic radiation, excluding:
(1) Machine components which are not in themselves capable of,
				or designed for, producing an RF field; and
(2) The signal generation portion of automatic or other test
				equipment designed to deliver a signal stimulus using coaxial or shielded
				cables to a device being tested.
Radiofrequency (RF) Heater and RF
				Sealer
means devices operating between 300 kHz and 300 MHz used to
				heat, melt or cure materials such as plastic, rubber, or glue by subjecting the
				material to a RF energy field. Included in this category are dielectric and
				induction heating devices.
Radiofrequency Machine
means any fixed
				device, machine, equipment or installation which is capable of generating a
				radiofrequency electromagnetic field.
Regularly Occupied
refers to an
				enclosed area, building, or other freestanding structure which may, at any
				given point in time, be occupied by a given member of the public on a continual
				basis and excludes occasional visitors, passersby, and service
				personnel.
RF Safety Officer
refers to a person
				who by virtue of training or experience has acquired knowledge or instruction
				in RF electromagnetic fields and their measurement. The individual designated
				may be the Facility owner, an employee, or an agent hired by the
				employer.
Single Source Emitter
means a
				radiofrequency facility containing one or more radiofrequency machines only one
				of which is normally radiating at a given time.
Survey
means the measurement, by
				appropriate instrumentation, of the level of potential occupational RF
				radiation exposure incidental to the use of a machine.