Code of Massachusetts Regulations › 105 CMR - DEPARTMENT OF PUBLIC HEALTH › Title 105 CMR 120.000 - The Control of Radiation › REPORTS › Section 120.622 - Definitions

Current through Register 1525, July 5, 2024
Annually
means either:
(1) at intervals not to exceed one year; or
(2) once per year, at about the same time each year (plus or
				  minus one month).
Doubly Encapsulated Sealed Source
means a sealed source in which the radioactive material is sealed within a
				  capsule and that capsule is sealed within another capsule.
Irradiator
means a facility that
				  uses radioactive sealed sources for the irradiation of objects or materials and
				  in which radiation doses rates exceeding five grays (500 rads) per hour exist
				  at one meter from the sealed radioactive sources in air or water, as applicable
				  for the irradiator type, but does not include irradiators in which both the
				  sealed source and the area subject to irradiation are contained within a device
				  and are not accessible to personnel.
Irradiator Operator
means an
				  individual who has successfully completed the training and testing described in
				  105 CMR 120.671 and is
				  authorized by the terms of the license to operate the irradiator without a
				  supervisor present.
Panoramic Dry-source-storage
				  Irradiator
means an irradiator in which the irradiations occur in
				  air in areas potentially accessible to personnel and in which the sources are
				  stored in shields made of solid materials. The term includes beam-type
				  dry-source-storage irradiators in which only narrow beam of radiation is
				  produced for performing irradiations.
Panoramic Irradiator
means an
				  irradiator in which the irradiations are done in air in areas potentially
				  accessible to personnel. The term includes beam-type irradiators.
Panoramic Wet-source-storage
				  Irradiator
means an irradiator in which the irradiations occur in
				  air in areas potentially accessible to personnel and in which the sources are
				  stored under water in a storage pool.
Pool Irradiator
means any irradiator
				  at which the sources are stored or used in a pool of water including panoramic
				  wet-source-storage irradiators and underwater irradiators.
Product Conveyor System
means a
				  system for moving the product to be irradiated to, from, and within the area
				  where irradiation takes place.
Radiation Room
means a shielded room
				  in which irradiations take place. Underwater irradiators do not have radiation
				  rooms.
Sealed Source
means any radioactive
				  material that is used as a source of radiation and is encased in a capsule
				  designed to prevent leakage or escape of the byproduct material.
Seismic Area
means any area where
				  the probability of horizontal acceleration in rock more than 0.3 times the
				  acceleration of gravity in 250 years is greater than 10%, as designated by the
				  U.S. Geological Survey.
Underwater Irradiator
means an
				  irradiator in which the sources always remain shielded under water and humans
				  do not have access to the sealed sources or the space subject to irradiation
				  without entering the pool.