| (B) any material artificially enriched by any of the
foregoing, but does not include source material.
(124) Special nuclear material in quantities not sufficient
to form a critical mass--Uranium enriched in the isotope 235 in quantities
not exceeding 350 grams (g) of contained uranium-235; uranium-233
in quantities not exceeding 200 g; plutonium in quantities not exceeding
200 g; or any combination of them in accordance with the following
formula.
(A) 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" (i.e., unity).
(B) For example, the following quantities in combination
would not exceed the limitation and are within the formula:
Attached Graphic
(125) Special units--The conventional units historically
used by licensees, for example, curie (activity), rad (absorbed dose),
and rem (dose equivalent).
(126) Stationary device--A piece of equipment containing
licensed radioactive material that is installed in a fixed location.
(127) Survey--An evaluation of the radiological conditions
and potential hazards incident to the production, use, transfer, release,
disposal, and/or presence of sources of radiation. When appropriate,
such survey includes, but is not limited to, tests, physical examination
of location of materials and equipment, measurements of levels of
radiation or concentration of radioactive material present, and evaluation
of administrative and/or engineered controls.
(128) Telemetric position monitoring system--A data
transfer system that captures information by instrumentation and/or
measuring devices about the location and status of a transport vehicle
or package between the departure and destination locations.
(129) Termination--A release by the agency 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.
(130) Test--A method of determining the characteristics
or condition of sources of radiation or components thereof.
(131) Texas Regulations for Control of Radiation (TRCR)--All
sections of Title 25, TAC, Chapter 289.
(132) Total effective dose equivalent (TEDE)--The sum
of the effective dose equivalent for external exposures and the committed
effective dose equivalent for internal exposures.
(133) Total organ dose equivalent (TODE)--The sum of
the deep dose equivalent and the committed dose equivalent to the
organ receiving the highest dose as described in §289.202(rr)(1)(F)
of this title.
(134) Transport index--The dimensionless number (rounded
up to the next tenth) placed on the label of a package, to designate
the degree of control to be exercised by the carrier during transportation.
The transport index is determined as follows:
(A) For non-fissile material packages, the number determined
by multiplying the maximum radiation level in millisievert per hour
(mSv/hr) at 1 meter (m) (3.3 feet) from the external surface of the
package by 100 (equivalent to the maximum radiation level in millirem
per hour (mrem/hr) at 1 m (3.3 feet); or
(B) For fissile material packages, the number determined
by multiplying the maximum radiation level in mSv/hr at 1 m (3.3 feet)
from the external surface of the package by 100 (equivalent to the
maximum radiation level in mrem/hr at 1 m (3.3 feet), or, for criticality
control purposes, the number obtained as described in Title 10, CFR, §71.59
whichever is larger.
(135) Trustworthiness and reliability--Characteristics
of an individual considered dependable in judgment, character, and
performance, such that unescorted access to category 1 or category
2 quantities of radioactive material by that individual does not constitute
an unreasonable risk to the public health and safety or security.
A determination of trustworthiness and reliability for this purpose
is based upon the results from a background investigation.
(136) Type A quantity--A quantity of radioactive material,
the aggregate radioactivity of which does not exceed A1 for special form radioactive material or
A2 for normal form radioactive material,
where A2 and A2 are
given in §289.257(ee) of this title (relating to Packaging and
Transportation of Radioactive Material) or may be determined by procedures
described in §289.257(ee) of this title.
(137) Type B quantity--A quantity of radioactive material
greater than a type A quantity.
(138) Unescorted access--Solitary access to an aggregated
category 1 or category 2 quantity of radioactive material or the devices
that contain the material.
(139) Unrefined and unprocessed ore--Ore in its natural
form prior to any processing, such as grinding, roasting or beneficiating,
or refining. Processing does not include sieving or encapsulation
of ore or preparation of samples for laboratory analysis.
(140) Unrestricted area (uncontrolled area)--An area,
or access to, which is neither limited nor controlled by the licensee.
For purposes of this chapter, "uncontrolled area" is an equivalent
term.
(141) Very high radiation area--An area, accessible
to individuals, in which radiation levels from sources of radiation
external to the body could result in an individual receiving an absorbed
dose in excess of 500 rads (5 Gy in one hour at 1 meter (m) from a
source of radiation or from any surface that the radiation penetrates.
At very high doses received at high dose rates, units of absorbed
dose, gray and rad, are appropriate, rather than units of dose equivalent,
Sv and rem.
(142) Veterinarian--An individual licensed by the Texas
State Board of Veterinary Medical Examiners.
(143) Waste--Low-level radioactive wastes containing
source, special nuclear, or byproduct material that are acceptable
for disposal in a land disposal facility. For the purposes of this
definition, low-level radioactive waste means radioactive waste not
classified as high-level radioactive waste, transuranic waste, spent
nuclear fuel, or byproduct material as defined in paragraph (19)(B)
- (E) of this subsection.
(144) Week--Seven consecutive days starting on Sunday.
(145) Whole body--For purposes of external exposure,
head, trunk including male gonads, arms above the elbow, or legs above
the knee.
(146) Worker--An individual engaged in work under a
license or certificate of registration issued by the agency and controlled
by a licensee or registrant, but does not include the licensee or
registrant.
(147) Working level (WL)--Any combination of short-lived
radon daughters in 1 liter of air that will result in the ultimate
emission of 1.3 x 105 MeV of potential
alpha particle energy. The short-lived radon daughters are--for radon-222:
polonium-218, lead-214, bismuth-214, and polonium-214; and for radon-220:
polonium-216, lead-212, bismuth-212, and polonium-212.
(148) Working level month (WLM)--An exposure to one
working level for 170 hours--2,000 working hours per year divided
by 12 months per year is approximately equal to 170 hours per month.
(149) Year--The period of time beginning in January
used to determine compliance with the provisions of this chapter.
The licensee may change the starting date of the year used to determine
compliance by the licensee provided that the change is made at the
beginning of the year and that no day is omitted or duplicated in
consecutive years.
(c) Exemptions.
(1) General provision. The agency may, upon application
therefore or upon its own initiative, exempt a source of radiation
or a kind of use or user from the requirements of this chapter if
the agency determines that the exemption is not prohibited by law
and will not result in a significant risk to public health and safety
and the environment. In determining such exemptions, the agency will
consider:
(A) state of technology;
(B) economic considerations in relation to benefits
to the public health and safety; and
(C) other societal, socioeconomic, or public health
and safety considerations.
(2) United States Department of Energy (DOE) contractors
and NRC contractors. Any DOE contractor or subcontractor and any NRC
contractor or subcontractor of the following categories operating
within Texas is exempt from this chapter, with the exception of §289.204
of this title (relating to Fees for Certificates of Registration,
Radioactive Material Licenses, Emergency Planning and Implementation,
and Other Regulatory Services), to the extent that such contractor
or subcontractor under that individual's contract receives, possesses,
uses, transfers, or acquires sources of radiation:
Cont'd... |
