Texas Register, Volume 23, Number 17, Pages 3957-4141, April 24, 1998 Page: 4,026
3957-4141 p. ; 28 cm.View a full description of this periodical.
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international consensus. These characteristics may be used by
researchers and public health workers to standardize results of
experiments and to relate biological insult to a common base. A
description of "reference man" is contained in the International
Commission on Radiological Protection report, ICRP Publication 23,
"Report of the Task Group on Reference Man."
(86) Rem - See 336.3 of this title.
(87) Residual radioactivity - Radioactivity in structures,
materials, soils, groundwater, and other media at a site resulting from
activities under the licensee's control. This includes radioactivity
from all licensed and unlicensed sources used by the licensee, but
excludes background radiation. It also includes radioactive materials
remaining at the site as a result of routine or accidental releases of
radioactive material at the site and previous burials at the site, even
if those burials were made in accordance with the provisions of 10
CFR Part 20.
(88) Respiratory protection equipment - An apparatus,
such as a respirator, used to reduce an individual's intake of airborne
radioactive materials. For purposes of the rules in this chapter,
"respiratory protective device" is an equivalent term.
(89) Restricted area - An area, access to which is limited
by the licensee for the purpose of protecting individuals against undue
risks from exposure to radiation and radioactive materials. Restricted
area does not include areas used as residential quarters, but separate
rooms in a residential building may be set apart as a restricted area.
(90) Roentgen (R) - See 336.3 of this title.
(91) Sanitary sewerage - A system of public sewers for
carrying off waste water and refuse, but excluding sewage treatment
facilities, septic tanks, and leach fields owned or operated by the
licensee.
(92) Sealed source - Radioactive material that is perma-
nently bonded or fixed in a capsule or matrix designed to prevent
release and dispersal of the radioactive material under the most se-
vere conditions that are likely to be encountered in normal use and
handling.
(93) Shallow-dose equivalent (Hs) (which applies to the
external exposure of the skin or an extremity) - The dose equivalent
at a tissue depth of 0.007 centimeter (7 milligrams/square centime-
ter) averaged over an area of 1 square centimeter.
(94) SI - The abbreviation for the International System
of Units.
(95) Sievert (Sv) - See 336.3 of this title.
(96) Site boundary - That line beyond which the land or
property is not owned, leased, or otherwise controlled by the licensee.
(97) Source material -
(A) Uranium or thorium, or any combination thereof,
in any physical or chemical form; or
(B) Ores that contain, by weight, 0.05% or more of
uranium, thorium, or any combination thereof. Source material does
not include special nuclear material.
[Source mate ial reeeovy - Umtnium or tho4um recovery as definedA
in this secti.]
(98) Special form radioactive material - Radioactive
material which is either a single solid piece or is contained in a sealed
capsule that can be opened only by destroying the capsule and which
has at least one dimension not less than 5 millimeters and whichsatisfies the test requirements of 10 CFR 71.75 as amended through
September 28, 1995 (60 FedReg 50264) (relating to Transportation
of License Material).
(99) Special nuclear material -
(A) Plutonium, uranium-233, uranium enriched in the
isotope 233 or in the isotope 235, and any other material that the
USNRC, under the provisions of the Atomic Energy Act of 1954, 51,
as amended through November 2, 1994 (Pub.L. 103-437), determines
to be special nuclear material, but does not include source material;
or
(B) Any material artificially enriched by any of the
foregoing, but does not include source material.
(100) Special nuclear material in quantities not sufficient
to form a critical mass - uranium enriched in the isotope 235
in quantities not exceeding 350 grams of contained uranium-235;
uranium-233 in quantities not exceeding 200 grams; plutonium in
quantities not exceeding 200 grams; or any combination of these in
accordance with the following formula: For each kind of special
nuclear material, determine the ratio between the quantity of that
special nuclear material and the quantity specified above for the same
kind of special nuclear material. The sum of such ratios for all of
the kinds of special nuclear material in combination shall not exceed
1. For example, the following quantities in combination would not
exceed the limitation: (175 grams contained U-235/350 grams) + (50
grams U-233/200 grams) + (50 grams Pu/200 grams) = 1.
(101) Specific license - A licensing document issued by
an agency upon an application filed under its rules. For purposes of
the rules in this chapter, "radioactive material license" is an equivalent
term. Unless stated otherwise, "license" as used in this chapter means
a "specific license."
(102) State - The State of Texas.
(103) Stochastic effect - A health effect that occurs
randomly and for which the probability of the effect occurring, rather
than its severity, is assumed to be a linear function of dose without
threshold. Hereditary effects and cancer incidence are examples
of stochastic effects. For purposes of the rules in this chapter,
"probabilistic effect" is an equivalent term.
(104) Survey - An evaluation of the radiological condi-
tions and potential hazards incident to the production, use, transfer,
release, disposal, and/or presence of radioactive materials or other
sources of radiation. When appropriate, this evaluation includes, but
is not limited to, physical examination of the location of radioactive
material and measurements or calculations of levels of radiation or
concentrations or quantities of radioactive material present.
(105) Termination - As applied to a license, a release by
the commission of the obligations and authorizations of the licensee
under the terms of the license. It does not relieve a person of duties
and responsibilities imposed by law.
[Thorium revery - Any activity that results in the production of
yprodt t mate tl as defined in subparagraph (B) of the defi itic,
of "byproduct mateia '-" of this sem"v exekuding other tailings
having similar radiologica chara.te4 sties- As uttsed in this del tiori-
]0 GER 40;4 as amended through Ju-y 5 f994 (-59 FedReg 335)
(relating to Definitions)-]
(106) Total effective dose equivalent (TEDE) - The sum
of the deep-dose equivalent for external exposures and the committed
effective dose equivalent for internal exposures.23 TexReg 4026 April 24, 1998 Texas Register
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Texas. Secretary of State. Texas Register, Volume 23, Number 17, Pages 3957-4141, April 24, 1998, periodical, April 24, 1998; Austin, Texas. (https://texashistory.unt.edu/ark:/67531/metapth113836/m1/72/: accessed April 27, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.