| (4) The water concentrations were derived by taking
the most restrictive occupational stochastic oral ingestion ALI and
dividing by 7.3 x 107 ml. The factor
of 7.3 x 107 ml is composed of the factors
of 50 and 2 and a factor of 7.3 x 105 ml
which is the annual water intake of "reference man."
(5) Note 6 of this appendix provides groupings of radionuclides
that are applicable to unknown mixtures of radionuclides. These groupings,
including occupational inhalation ALIs and DACs, air and water effluent
concentrations, and releases to sewerage, require demonstrating that
the most limiting radionuclides in successive classes are absent.
The limit for the unknown mixture is defined when the presence of
one of the listed radionuclides cannot be definitely excluded either
from knowledge of the radionuclide composition of the source or from
actual measurements.
(d) Table III, "releases to sewers." The monthly average
concentrations for release to sanitary sewerage are applicable to
the provisions in §336.215 of this title (relating to Disposal
by Release into Sanitary Sewerage). The concentration values were
derived by taking the most restrictive occupational stochastic oral
ingestion ALI and dividing by 7.3 x 106 ml.
The factor of 7.3 x 106 ml is composed
of a factor of 7.3 x 105 ml, the annual
water intake by "reference man," and a factor of 10, such that the
concentrations, if the sewage released by the licensee were the only
source of water ingested by a "reference man" during a year, would
result in a committed effective dose equivalent of 0.5 rem (5 millisieverts).
Attached Graphic
|
| Source Note: The provisions of this §336.359 adopted to be effective June 5, 1997, 22 TexReg 4588; amended to be effective August 30, 2001, 26 TexReg 6309; amended to be effective February 2, 2012, 37 TexReg 335 |
