QTP4B071-11 — Electro-magnetic Frequency (EMF)

QTP4B071-11 governs Air Force qualification training for EMF risk assessment, exposure limits, hazard distances, surveys, and instrumentation.

Search QTP4B071-11

  • Publication number: QTP4B071-11
  • Title: Electro-magnetic Frequency (EMF)
  • Date: 2024-03-20

View QTP4B071-11 on armypubs.army.mil

It covers EMF risk assessments, maximum permissible exposure limits, hazard-distance calculations, measurement surveys, instrumentation, and probe burnout. It includes trainer guidance, task steps, review questions, performance checklists, and answers for the listed training items.

Topics covered

  • EMF risk assessment
  • Maximum permissible exposure limits
  • EMF hazard distances
  • EMF measurement surveys
  • EMF instrumentation
  • Upper and lower tier environments
  • Probe burnout calculations

Questions and answers

Why are work practices reviewed during an EMF site inspection?

Take time to note the work practices of shop personnel. Sometimes actual work practices vary considerably from their description! (paragraph 1)

What can lower tier EMF exposures involve?

Lower Tier exposures can occur in areas where individuals would have no knowledge or control of their exposure. (paragraph 1)

What must be done before an EMF measurement survey?

Near and far-field calculations need to be done prior to surveying. (paragraph 2)

When is a single probe used for EMF measurements?

A single probe is used only when the electric and magnetic fields are proportional and interchangeable, that is, the ratio of the two remains constant through space (i.e. far field). (paragraph 2)

What does an EMF measurement survey determine?

Measurement surveys will be performed to determine levels of EMF in regions accessible to personnel. (paragraph 2)

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