Nebraska Administrative Code › Topic - HEALTH AND HUMAN SERVICES SYSTEM › Title 180 - CONTROL OF RADIATION › Chapter 14 - RADIATION SAFETY REQUIREMENTS FOR WELL LOGGING AND SUBSURFACE TRACER STUDIES › Section 180-14-002 - DEFINITIONS

Current through June 17, 2024
The following definitions apply to this chapter:
002.01
ENERGY COMPENSATION SOURCE
  (ECS).
A small sealed source, with an activity not exceeding 3.7
  megabecquerels (MBq) or 100 microcuries (µCi), used within a logging
  tool, or other tool components, to provide a reference standard to maintain the
  tool's calibration when in use.
002.02
FIELD
  STATION.
A facility where radioactive sources may be stored or
  used and from which equipment is dispatched to temporary jobsites.
002.03
FRESH WATER
  AQUIFER.
A geologic formation capable of yielding fresh water to a
  well or spring, except those aquifers exempted according to
  40 CFR
  122.35.
002.04
INJECTION
  TOOL.
A device used for controlled subsurface injection of
  radioactive tracer material.
002.05
IRRETRIEVABLE WELL LOGGING SOURCE.
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.
002.06
LOGGING
  ASSISTANT.
Any individual who, under the personal supervision of a
  logging supervisor, handles sealed sources or tracers that are not in logging
  tools or shipping containers or performs surveys required by 180 NAC
  14-020.
002.07
LOGGING
  SUPERVISOR.
An individual who uses radioactive material or
  provides personal supervision in the use of radioactive material at a temporary
  jobsite and is responsible to the licensee for assuring compliance with the
  regulation requirements and conditions of the license.
002.08
LOGGING TOOL.
A device used subsurface to perform well logging.
002.09
PERSONAL
  SUPERVISION.
Guidance and instruction by a logging supervisor, who
  is physically present at a temporary jobsite, in personal contact with logging
  assistants, and can give immediate assistance.
002.10
RADIOACTIVE
  MARKER.
Radioactive material used for depth determination or
  direction orientation. This includes radioactive collar markers and radioactive
  iron nails.
002.11
SAFETY REVIEW.
A periodic review provided by the
  licensee for its employees on radiation safety aspects of well logging. The
  review may include results of internal inspections, new procedures or
  equipment, accidents or errors that have been observed, and opportunities for
  employees to ask safety questions.
002.12
SOURCE
  HOLDER.
A housing or assembly into which a sealed source is placed
  to facilitate the handling and use of the source in well logging.
002.13
SUBSURFACE TRACER
  STUDY.
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.
002.14
SURFACE CASING FOR PROTECTING FRESH WATER AQUIFERS.
A
  pipe or tube used as a lining in a well to isolate fresh water aquifers from
  the well.
002.15
TEMPORARY JOBSITE.
A place where radioactive materials
  are present for the purpose of performing well logging or subsurface tracer
  studies.
002.16
TRITIUM
  NEUTRON GENERATOR TARGET SOURCE.
A tritium source used within a
  neutron generator tube to produce neutrons for use in well logging
  applications.
002.17
URANIUM SINKER BAR.
A weight containing depleted
  uranium used to pull a logging tool toward the bottom of a well.
002.18
WELL.
A
  drilled hole for the purpose of oil, gas, mineral, groundwater, or geological
  exploration where well logging may be performed
002.19
WELL LOGGING.
All operations involving the lowering and raising of measuring devices or tools
  which contain radioactive material or are used to detect radioactive materials
  in wells for the purpose of obtaining information about the well or adjacent
  formations which may be used in oil, gas, mineral, groundwater, or geological
  exploration.