ACTION.SPE ctra diw 91 06 07

Diffey = proposed new CIE

e(l) = 1.0 250<l<298

e(l) = 10^{.094(298 - l)} 298<l<328

e(l) = 10^{.015(139 - l)} 328<l<400nm

ACGIH-NIOSH = spectrum for "Damaging" UV-B = DUV

e(l) = .53 at l=255 e=1 at l=270

( straight line on log plot 255<l<270)

e(l) = 1 - 0.36*((l-270)/20)^1.64 270<l<300

e(l) = 0.3*0.7356^{( l-300)} 300<l

(this drops by 10² each 15nm)

from Ulf Wester,1981 A simple formula for approximation of the ACGIH curve of relative spectral effectiveness of actinic UV.

Internal report RI 1981-02

Dept. Of Radiation Physics, Karolynska Institute

Box 60294, S-10401,Stockholm, Sweden. 1983

BASED ON Sliney, D. 1972 The merits of an envelope action spectrum for ultraviolet radiation exposure criteria, American Industrial Hygene Association, 1972.

American Conference of Governmental Industrial Hygenists - National Institute of Ocupational Safety and Health. Of the Centre for Disease Control, Atlanta Georgia.