QTP4B051-15 — Air Force Specialty Code 4b051 Bioenvironmental Engineering Electro-magnetic Frequency (emf)

QTP4B051-15 governs EMF exposure limits, hazard-distance calculations, measurement surveys, instrumentation, and probe burnout.

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  • Publication number: QTP4B051-15
  • Title: AIR FORCE SPECIALTY CODE 4B051 BIOENVIRONMENTAL ENGINEERING ELECTRO-MAGNETIC FREQUENCY (EMF)
  • Date: 2024-03-06

View QTP4B051-15 on armypubs.army.mil

QTP4B051-15 covers emitter data, field selection, tier environments, MPE calculations, EMF surveys, probe orientation, and measurement recording. It requires calculation of duty factor and PDmax for pulsed emitters and use of applicable OEHMIS, DOEHRS, or an equivalent system.

Topics covered

  • EMF maximum permissible exposure limits
  • EMF hazard distances
  • EMF measurement surveys
  • EMF survey instruments
  • Probe orientation
  • Duty factor
  • Probe burnout
  • PDmax

Questions and answers

What is the purpose of EMF hazard-distance calculations?

To determine the necessity for performing a survey of the emitter and to determine the distance to begin the survey if needed. (paragraph 1)

How should an emitter be configured for measurements?

Worst case operating parameters under fixed-beam conditions should be used to define the location of action level MPEs whenever possible. (paragraph 3)

How should the probe be selected for an EMF survey?

Select the probe that is compatible with the field (E or H) being measured and emitter frequency. (paragraph 4)

How can zero drift concerns be reduced before survey measurements?

(1) Connect and turn instrumentation “on” at least 10 minutes before survey measurements are made. (paragraph 1)

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