IEEE C95.1-2345-2014 pdf free download.IEEE Standard for Military Workplaces—Force Health Protection Regarding Personnel Exposure to Electric, Magnetic, and Electromagnetic Fields, 0 Hz to 300 GHz.
NOTE—The time duration (t 2 – t 1 ) could be source related (e.g., the source repetition period, duty factor) or use related (e.g., the averaging time associated with the ERLs). average (temporal) power density: The instantaneous power density in a propagating wave integrated (averaged) over a specific time duration. The time duration could be source related, e.g., the source repetition period, or use related, e.g., the averaging time specified in exposure guidelines. The SI unit of average power density is watt per square meter (W/m 2 ). averaging distance: The distance over which the in situ electric field is averaged when determining compliance with dosimetric reference limits (DRLs) for electrostimulation. averaging time (T avg ): The appropriate time period over which the exposure is averaged for purposes of determining compliance with the appropriate exposure reference level (ERL). averaging volume: The volume over which the peak spatial-average specific absorption rate is averaged when determining compliance with a dosimetric reference limit (DRL). axial cross section: A cross section of the body taken in a plane perpendicular to its long axis. axial exposure: Exposure by an electric, magnetic, or electromagnetic field perpendicular to the axial cross section. axon: The long extension of a neuron that conducts electrical impulses. biological effect: An effect caused by, or in response to, exposure to a biological, chemical, or physical agent, including electromagnetic energy. NOTE 1—Biological effects are alterations of the structure, metabolism, or functions of a whole organism, its organs, tissues, and cells. NOTE 2—Biological effects may occur without adverse health effects, or may even be beneficial; they may also cause harm in the short-term (e.g., a burn) without long-term consequences. NOTE 3—Biological effects also can include sensation phenomena and adaptive responses.
biphasic: A waveform that has a reversal of polarity. cardiac excitation: The electrical stimulation of a cardiac contraction. central nervous system (CNS): The portion of the vertebrate nervous system consisting of the brain and spinal cord, but not including the peripheral nerves. cerebral cortex: The convoluted thin layer of brain cells (gray matter) forming the outer surface of each cerebral hemisphere. chronic exposure: A sequence of many repeated or continuous exposures over a long period of time, e.g., months to years, depending on the biological system being considered and its lifespan. conductivity: A property of materials that determines the magnitude of the electric current density when the material is exposed to an electric field, expressed in units of siemen per meter (S/m); the inverse of resistivity. contact current: Current flowing through a person touching a charged conducting object. contact voltage: For purposes of this standard, an open-circuit voltage between two conducting objects, that when bridged by a human would produce contact current. See: open-circuit voltage. continuous exposure: For purposes of this standard, exposure for durations exceeding the corresponding averaging time. NOTE—In this context, exposure for less than the averaging time is considered a short-term exposure . controlled environment: Deprecated. See exposure environment. corona (air): A luminous discharge due to ionization of the air surrounding a conductor caused by a voltage gradient exceeding a certain critical value. Corona by-products may include radio frequency (RF), audible noise, and trace amounts of ozone. coronal cross section: A cross section taken through the long axis of the body in a plane parallel to its front view.
coronal exposure: Exposure by an electric, magnetic or electromagnetic field perpendicular to the coronal cross section. current density: The ratio of the current flowing to the cross-sectional area perpendicular to the direction of the current, expressed in units of ampere per square meter (A/m 2 ). depolarization (cellular): The reduction of the potential across a cellular membrane relative to its resting value. direct electrostimulation: Deprecated. See: induced electrostimulation. dosimetric reference limits (DRL): Limits relative to dosimetric thresholds for established adverse health effects that incorporate appropriate safety factors. DRLs are expressed in terms of the in situ electric field strength (0 Hz to 5 MHz), specific absorption rate (100 kHz to 3 GHz), or incident power density (3 GHz to 300 GHz) with the associated averaging times. DRLs are equivalent to the quantity previously referred to as basic restrictions. NOTE—Because of the small penetration depth at frequencies above 3 GHz, the exposure reference levels (ERLs) expressed in terms of power density, are also the DRLs.