UV/optical radiation against ACGIH TLV-L & ICNIRP. EMF field strength for workplace exposures.
How to use
Select the UV spectral band and source type, then enter the measured irradiance and daily exposure duration. The tool computes the effective irradiance dose and compares it against ACGIH TLV-L (2024) limits. For broadband sources, use the effective weighted irradiance method.
ACGIH TLV-L values are for unprotected skin and eyes. Biological action spectra (S(λ) for UV, B(λ) for blue light) must be applied to spectral irradiance data for broadband sources. This tool uses band-representative limits; spectral photometry is required for precise assessment of arc sources (welding, UV curing, germicidal lamps). Standard: ACGIH TLVs & BEIs (2024); ICNIRP Guidelines on Limits of Exposure to Ultraviolet Radiation (2004).
How to use
Select the frequency range and field type (electric E or magnetic B/H), then enter the measured field strength. Results are compared against ICNIRP 2010 reference levels and EU Directive 2013/35/EU action values. For multi-frequency environments, a frequency summation check is recommended.
EMF assessment — ICNIRP 2010 / EU Directive 2013/35/EU
Measured value—
Reference level / action value—
% of reference level—
Select frequency and enter field strength
ICNIRP reference levels — all ranges
Frequency / field type
Occupational
General public
Reference levels are from ICNIRP Guidelines on Limits of Exposure to Time-Varying Electric and Magnetic Fields (2010) and ICNIRP Guidelines for Limiting Exposure to Electromagnetic Fields (2020). EU Directive 2013/35/EU implements occupational action values (low and high) and exposure limit values (ELVs). For complex multi-source environments, a frequency summation formula must be applied. Near-field and contact current assessments require specialised measurement.