Kansas Administrative Regulations
Agency 28 - DEPARTMENT OF HEALTH AND ENVIRONMENT
Article 35 - RADIATION
Section 28-35-212b - Compliance with requirements for summation of external and internal doses
Universal Citation: KS Admin Regs 28-35-212b
Current through Register Vol. 43, No. 52, December 26, 2024
(a) If the licensee or registrant is required to monitor pursuant to both K.A.R. 28-35-217a (a) and (d), the licensee or registrant shall demonstrate compliance with the dose limits by summing external and internal doses.
(1) If the licensee or registrant is required
to monitor pursuant to only K.A.R. 28-35-217a(a) or K.A.R. 28-35-217a(d), then
the summation shall not be required to demonstrate compliance with the dose
limits.
(2) The dose equivalents
for the lens of the eye, the skin, and the extremities shall not be included in
the summation and shall be subject to separate limits.
(b) Any licensee or registrant may demonstrate compliance with the requirements for summation of external and internal doses pursuant to the following:
(1)
Intake by inhalation. If the only intake of radionuclides is by inhalation, the
total effective dose equivalent limit shall not be deemed to be exceeded if the
sum of the deep dose equivalent divided by the total effective dose equivalent
limit, and one of the following, does not exceed one:
(A) The sum of the fractions of the
inhalation ALI for each radionuclide;
(B) The total number of derived air
concentration-hours (DAC-hours) for all radionuclides divided by 2,000; or
(C) the sum of the calculated
committed effective dose equivalents to all significantly irradiated organs or
tissues (T) calculated from bioassay data using appropriate biological models
and expressed as a fraction of the annual limit. For purposes of this
requirement, an organ or tissue shall be deemed to be significantly irradiated
if, for that organ or tissue, the product of the weighting factors, wT, and the
committed dose equivalent, HT.50, per unit intake is greater than 10 percent of
the maximum weighted value of H50.
(2) Intake by oral ingestion. If the
occupationally exposed individual receives an intake of radionuclides by oral
ingestion greater than 10 percent of the applicable oral ALI, the licensee or
registrant shall account for this intake and include it in demonstrating
compliance with the limits.
(3)
Intake through wounds or absorption through skin. The licensee or registrant
shall evaluate and, to the extent practical, account for intakes through wounds
or skin absorption. The intake through intact skin is included in the
calculation of DAC for hydrogen-3 and shall not be required to be evaluated or
accounted for pursuant to this subsection.
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