Value chain · CLM-0024
In plain terms
The American standard of the day allowed 100 watts per square metre averaged over six minutes. The US had no separate limit for the public in 1980, though Canada had just set one of 10 watts per square metre for continuous public exposure.
The claim as recorded
ANSI C95.1-1974, as quoted in the 1980 assessment, set a power density limit of 10 mW/cm2 which is 100 W/m2, for 10 MHz to 100 GHz, averaged over any exposure period of 0.1 hour, and the assessment records that the question of environmental standards for the general non-occupational population was still under consideration by the EPA at that time.
Scope and limits
Quoted at second hand from the 1980 assessment; ANSI C95.1-1974 itself is paywalled and remains status SUGGESTED as SRC-087. Long superseded, and useful only as the historic comparator.
What it assumes
No assumptions are recorded against this claim.
Where it comes from
Verbatim, SRC-086 p16: "Under this standard, which applies to the frequency range from 10 MHz to 100 GHz, none of the following values, when averaged over any exposure period of 0.1 hour, should be exceeded - Power density: 10 mW/cm2". The document renders the equivalent as "10 mW/cm2 (100 W/m2)". Conversion confirmed: 10 mW/cm2 x 10 = 100 W/m2. SRC-086 p.17: the Canadian federal standard's "maximum permissible general (nonoccupational) level for continuous exposure is 1 mW/c[m2], applicable to frequencies in the band from 10 MHz to 300 GHz" (unit truncated in the text layer; 1 mW/cm2 = 10 W/m2).
Related records
- Answers question
- QST-001 not published in this release
Cite this
energyaperture.com/c/clm-0024
CLM-0024, Energy Aperture, as of 1974.
Connected records
Other published records linked to this one. A list, not a judgement.
- Also from SRC-086
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