Tenn. Comp. R. & Regs. 0400-20-12-.03

Current through June 26, 2024

Section 0400-20-12-.03 - DEFINITIONS

As used in this chapter, certain terms have the definitions set forth below: (Additional definitions may be found in Chapters 0400-20-04, 0400-20-05, 0400-20-06, 0400-20-08, 0400-20-09 and 0400-20-11.)

(1) "Aquifer" means a formation, group of formations, or part of a formation that contains a sufficient quantity of permeable material to yield significant quantities of water for wells and springs.

(2) "Energy compensation source (ECS)" means a small sealed source, with an activity not exceeding 3.7 MBq (100 microcuries), used within a logging tool, or other tool components, to provide a reference standard to maintain the tool's calibration when in use.

(3) "Field station" means a facility where sources of radiation may be stored or used and from which equipment is dispatched to temporary job-sites.

(4) "Fresh water aquifer" means, for the purpose of this chapter, a geologic formation that is capable of yielding fresh water to a well or spring.

(5) "Injection tool" means a device used for controlled subsurface injection of radioactive tracer material.

(6) "Irretrievable well logging source" means any sealed source containing radioactive material that is pulled off or not connected to the wireline that suspends the source in the well and for which all reasonable effort at recovery has been expended.

(7) "Logging assistant" means any individual who, under the personal supervision of a logging supervisor, handles sources of radiation or radioactive tracers that are not in logging tools or shipping containers or who performs surveys required by Rule 0400-20-12-.21.

(8) "Logging supervisor" means an individual who uses sources of radiation or provides personal supervision in the use of sources of radiation at a temporary job-site and who is responsible to the licensee or registrant for assuring compliance with the requirements of these regulations and the conditions of the license or registration.

(9) "Logging tool" means a device used subsurface to perform well logging.

(10) "Personal supervision" means guidance and instruction by a logging supervisor who is physically present at a temporary job-site, who is in personal contact with logging assistants, and who can give immediate assistance.

(11) "Radioactive marker" means radioactive material used for depth determination or direction orientation. For purposes of this chapter, this term includes radioactive collar markers and radioactive iron nails.

(12) "Safety review" means a periodic review provided by the licensee or registrant for its employees on radiation safety aspects of well logging. The review may include, as appropriate, the results of internal inspections, new procedures or equipment, accidents or errors that have been observed, and opportunities for employees to ask safety questions.

(13) "Sealed source" - See Rule 0400-20-04-.04.

(14) "Source holder" means a housing or assembly into which a sealed source is placed to facilitate the handling and use of the source in well logging.

(15) "Subsurface tracer study" means the release of unsealed radioactive material or a substance labeled with radioactive material in a single well for the purpose of tracing the movement or position of the material or substance in the well or adjacent formation.

(16) "Surface casing for protecting fresh water aquifers" means a pipe or tube used as a lining in a well to isolate fresh water aquifers from the well.

(17) "Temporary job-site" means a place where sources of radiation are present for the purpose of performing well logging including subsurface tracer studies.

(18) "Tritium neutron generator target source" means a tritium source used within a neutron generator tube to produce neutrons for use in well logging applications.

(19) "Uranium sinker bar" means a weight containing depleted uranium used to pull a logging tool toward the bottom of a well.

(20) "Well" means a bored, drilled, driven or dug shaft or hole whose depth is greater than the largest surface dimension.

(21) "Well logging" means all operations involving the lowering and raising of measuring devices or tools which contain sources of radiation or are used to detect radioactive materials in wells for the purpose of obtaining information about the well or adjacent formations.

Tenn. Comp. R. & Regs. 0400-20-12-.03

Original rule filed February 22, 2012; effective May 22, 2012.

Authority: T.C.A. §§ 68-202-101 et seq., 68-202-201 et seq., and 4-5-201 et seq.