Code of Massachusetts Regulations › 105 CMR - DEPARTMENT OF PUBLIC HEALTH › Title 105 CMR 120.000 - The Control of Radiation › QUALITY ASSURANCE › Section 120.902 - Definitions

Current through Register 1525, July 5, 2024
As used in 105 CMR 120.900, the following definitions
				  apply:
Energy Compensated Source (ECS)
means a small sealed source with an activity not exceeding 3.7 megabecquerel
				  (100 µCi), used within a logging tool or other tool components, to
				  provide a reference standard to maintain the tool's calibration when in
				  use.
Field Station
means a facility where
				  radioactive sources may be stored or used and from which equipment is
				  dispatched to temporary jobsites.
Fresh Water Aquifer
for the purpose
				  of this part, means a geologic formation that is capable of yielding fresh
				  water to a well or spring.
Injection Tool
means a device used
				  for controlled subsurface injection of radioactive tracer material.
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.
Logging Assistant
means the
				  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 who performs surveys required by
				  105 CMR 120.951.
Logging Supervisor
means the
				  individual who uses licensed material or provides personal supervision of the
				  utilization of sources of radiation at a temporary jobsite and who is
				  responsible to the licensee or registrant for assuring compliance with the
				  requirements of the Agency's regulations and the conditions of the license or
				  registration.
Logging Tool
means a device used
				  subsurface to perform well-logging.
Mineral Logging
means any logging
				  performed for the purpose of mineral exploration other than oil or gas.
Personal Supervision
means guidance
				  and instruction by the logging supervisor who is physically present at a
				  temporary jobsite and watching the performance of the operation in such
				  proximity that contact can be maintained and immediate assistance given as
				  required.
Personnel Monitoring Badge
means an
				  individual personnel dosimeter that is processed and evaluated by accredited
				  National Voluntary Laboratory Accreditation Program (NVLAP) processor.
Radioactive Marker
means radioactive
				  material placed subsurface or on a structure intended for subsurface use for
				  the purpose of depth determination or direction orientation.
Safety Review
means a periodic
				  review provided by the licensee for its employees on radiation safety aspects
				  of well logging. The review may include, as appropriate, the result of internal
				  inspections, new procedures or equipment, accidents or errors that have been
				  observed, and opportunities for employees to ask safety questions.
Source Holder
means a housing or
				  assembly into which a radioactive source is placed for the purpose of
				  facilitating the handling and use of the source in well-logging
				  operations.
Subsurface Tracer Study
means the
				  release of unsealed radioactive material or a substance tagged with radioactive
				  material for the purpose of tracing the movement or position of the radioactive
				  material or tagged substance in the well-bore or adjacent formation.
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.
Temporary Jobsite
means a location
				  to which radioactive materials have been dispatched to perform wireline service
				  operations or subsurface tracer studies.
Tritium Neutron Generator Target
				  Source
means a tritium source used within a neutron generator tube
				  to produce neutrons for use in well-logging applications.
Uranium Sinker Bar
means a weight
				  containing depleted uranium used to pull a logging tool toward the bottom of
				  well.
Well-bore
means a drilled hole in
				  which wireline service operations and subsurface tracer studies are
				  performed.
Well-logging
means the lowering and
				  raising of measuring devices or tools which may contain sources of radiation
				  into well-bores or cavities for the purpose of obtaining information about the
				  well and/or adjacent formations.
Wireline
means a cable containing
				  one or more electrical conductors which is used to lower and raise logging
				  tools in the well-bore.
Wireline Service Operation
means any
				  evaluation or mechanical service which is performed in the well-bore using
				  devices on a wireline.