Texas Administrative Code › Title 30 - ENVIRONMENTAL QUALITY › Part 1 - TEXAS COMMISSION ON ENVIRONMENTAL QUALITY › Chapter 336 - RADIOACTIVE SUBSTANCE RULES › Subchapter H - LICENSING REQUIREMENTS FOR NEAR-SURFACE LAND DISPOSAL OF LOW-LEVEL RADIOACTIVE WASTE › Section 336.702 - Definitions

Current through Reg. 49, No. 28; July 12, 2024
Terms used in this subchapter are defined in §
										336.2 of
					 this title (relating to Definitions). Additional terms used in this subchapter
					 have the following definitions.
(1)
				  Active maintenance--Any significant remedial activity needed during the period
				  of institutional control to maintain a reasonable assurance that the
				  performance objectives in §
										336.724
				  of this title (relating to Protection of the General Population from Releases
				  of Radioactivity) and §
										336.725
				  of this title (relating to Protection of Individuals from Inadvertent
				  Intrusion) are met. Active maintenance includes ongoing activities such as the
				  pumping and treatment of water from a disposal unit or one-time measures such
				  as replacement of a disposal unit cover. Active maintenance does not include
				  custodial activities such as repair of fencing, repair or replacement of
				  monitoring equipment, revegetation, minor additions to soil cover, minor repair
				  of disposal unit covers, and general disposal site upkeep such as mowing
				  grass.
(2) Buffer zone--A portion
				  of the disposal site that is controlled by the licensee and that lies under the
				  disposal units and between the disposal units and the boundary of the disposal
				  site.
(3) Chelating agent--A
				  chemical or complex which causes an ion, usually a metal, to be joined in the
				  same molecule by relatively stable bonding, e.g., amine polycarboxylic acids
				  (e.g., EDTA, DTPA), hydroxycarboxylic acids, and polycarboxylic acids (e.g.,
				  citric acid, carbolic acid, and gluconic acid).
(4) Commencement of major construction--Any
				  clearing of land, excavation, or other substantial action that would adversely
				  affect the environment of a land disposal facility. The term does not mean
				  disposal site exploration, necessary roads for disposal site exploration,
				  borings to determine foundation conditions, or other preconstruction monitoring
				  or testing to establish background information related to the suitability of
				  the disposal site or the protection of environmental values.
(5) Commercial processing--The storage,
				  extraction of materials, transfer, volume reduction, compaction, incineration,
				  solidification, or other separation and preparation of radioactive substances
				  from other persons for reuse or disposal, including any treatment or activity
				  that renders the waste less hazardous, safer for transport, or amenable to
				  recovery, storage, or disposal.
(6)
				  Commingling--Any process that combines radioactive substances from two or more
				  generators resulting from the commercial processing of radioactive
				  substances.
(7) Containerized Class
				  A waste--Class A low-level radioactive waste which presents a hazard because of
				  high radiation levels. High radiation levels are radiation levels from an
				  unshielded container that could result in an individual receiving a dose
				  equivalent in excess of 0.1 rem (1 millisievert) in one hour at 30 centimeters
				  from any surface of the container that the radiation penetrates.
(8) Custodial agency--A government agency
				  designated to act on behalf of the government owner of the disposal
				  site.
(9) Disposal site--That
				  portion of a land disposal facility which is used for disposal of waste. It
				  consists of disposal units and a buffer zone.
(10) Disposal unit--A discrete portion of the
				  disposal site into which waste is placed for disposal. For near-surface
				  disposal, the disposal unit is usually a trench.
(11) Engineered barrier--A man-made structure
				  or device that is intended to improve the land disposal facility's ability to
				  meet the performance objectives in this subchapter.
(12) Explosive material--Any chemical
				  compound, mixture, or device which produces a substantial instantaneous release
				  of gas and heat spontaneously or by contact with sparks or flame.
(13) Government agency--Any executive
				  department, commission, independent establishment, or corporation, wholly or
				  partly owned by the United States of America or the State of Texas and which is
				  an instrumentality of the United States or the State of Texas; or any board,
				  bureau, division, service, office, officer, authority, administration, or other
				  establishment in the executive branch of the government.
(14) Hydrogeologic unit--Any soil or rock
				  unit or zone which by virtue of its porosity or permeability, or lack thereof,
				  has a distinct influence on the storage or movement of groundwater.
(15) Inadvertent intruder--A person who might
				  occupy the disposal site after closure and engage in normal activities, such as
				  agriculture, dwelling construction, or other pursuits in which the person might
				  be unknowingly exposed to radiation from the waste.
(16) Incidental--Unavoidable or otherwise
				  unintentional actions that, with respect to commingling of waste, prevents
				  party state compact waste from being kept separate from waste from other
				  sources without undue risk to occupational or public health and safety or the
				  environment.
(17) Intruder
				  barrier--A sufficient depth of cover over the waste that inhibits contact with
				  waste and helps to ensure that radiation exposures to an inadvertent intruder
				  meet the performance objectives set forth in this subchapter, or engineered
				  structures that provide equivalent protection to the inadvertent
				  intruder.
(18)
				  Monitoring--Observing and making measurements to provide data to evaluate the
				  performance and characteristics of the disposal site.
(19) Party state compact waste--Low-level
				  radioactive waste generated in a party state of the Texas Low-Level Radioactive
				  Waste Disposal Compact.
(20)
				  Pyrophoric material--
(A) Any liquid that
				  ignites spontaneously in dry or moist air at or below 130 degrees Fahrenheit
				  (54.5 degrees Celsius); or
(B) Any
				  solid material, other than one classed as an explosive, which under normal
				  conditions is liable to cause fires through friction, retained heat from
				  manufacturing or processing, or which can be ignited readily and when ignited
				  burns so vigorously and persistently as to create a serious transportation,
				  handling, or disposal hazard. Included are spontaneously combustible and
				  water-reactive materials.