9.5.2 Assessor Competency And Task Definition
RF exposure assessment is a specialized activity. The assessor, or the assessment team collectively, must have the knowledge and experience required to prepare, perform, explain, and report the work. The standard does not prescribe a particular qualification, but it requires records capable of demonstrating relevant education, training, experience, and competence.
The necessary competence depends on the task. A computational assessment generally requires greater mathematical and electromagnetic-modeling knowledge, while a near-field or reradiation assessment may demand greater practical familiarity with the source, field behavior, instrumentation, and site. A team may combine these skills rather than requiring every member to possess all of them.
The assessment must begin with a clear definition of its purpose and the needs of the relevant stakeholders. Regulatory requirements, the required confidence in the result, access and safety constraints, available source information, and the margin expected between the exposure and the limit all influence the method. An assessment near a compliance boundary ordinarily requires lower uncertainty than a broad screening survey well below the limits.
9.5.3 Assessment Workflow And Preliminary Assessment
The standard presents a staged workflow: define the task; determine source and physical-environment characteristics; identify the applicable exposure limits; perform a preliminary assessment; choose measurement, computation, or a combination; finalize and post-process the results; and report the assessment.
Source characterization includes transmitter power, frequency, modulation, pulse structure, duty factor, intermittency, spurious emissions, and the number of relevant sources. The antenna and environment must also be considered, including gain, beamwidth, orientation, scanning behavior, distance, polarization, field region, nearby scatterers or reradiators, leakage paths, and other RF sources.
The preliminary assessment estimates the likely exposure from all relevant sources, identifies the quantities that must be evaluated, selects suitable instruments or computational tools, and establishes precautions for the assessor and nearby people. It also helps determine whether a detailed evaluation is required and where the highest exposures are likely to occur.
Any decision that detailed evaluation is unnecessary must rest on a current and applicable exclusion, prior conformity assessment, or other defensible basis. Operating modes, separation distances, power settings, or other conditions on which that decision depends must be recorded; exclusions or thresholds carried over from the superseded RPS3 framework should not be assumed to remain current.