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Information Bulletin

99-01
January 27, 1999

Subject: Glossary of Terms Related to Radioisotope Licences

Purpose

The purpose of this information bulletin is to introduce radioisotope licence terminology that is currently in use and that will be used under the new Nuclear Safety and Control Act and Regulations.

Scope

This information bulletin will be of interest to all Atomic Energy Control Board (AECB) radioisotope licensees.

Introduction

The exchange of technical and regulatory information between applicants, licensees and the AECB has not always achieved the desired outcome due to a lack of understanding of the terms used. When the new Nuclear Safety and Control Act and Regulations come into effect early in 1999, the AECB will be replaced by the Canadian Nuclear Safety Commission (AECB), and numerous changes, including terminology, will result.

Glossary

In order to standardize terminology, a glossary has been prepared to improve understanding, particularly in the area of radioisotope licences.

For example, terms such as industrial radiography", nuclear medicine", and static elimination" which have been known as "licensed activities" under the current regulations will be known under the new regulations as "use type". In addition to the term "use type," the term "nuclear substance" will be used instead of "radioisotope" and the term "radiation device" will be used instead of "device." Where a term is not defined, the dictionary definition pertains.

Attached to this information bulletin you will find the glossary, which is subdivided as follows:

Appendix I provides the definitions of important terms as they appear in the new Nuclear Safety and Control Act and Regulations;

Appendix II provides the definitions for all Use Types;

Appendix III provides definitions for additional terms which are not defined in the regulations, but are necessary for purposes of clarity.

Questions or comments related to this Information Bulletin should be addressed to :

J.E.G. Lavoie
Materials Regulation Division
Atomic Energy Control Board
P.O. Box 1046, Station B
Ottawa, Ontario K1P 5S9

Telephone: (888) 229-2672
(613) 996-2887
Facsimile : (613) 995-5086


R. ThomasB Director, Materials Regulation Division

APPENDIX I
DEFINITIONS FROM THE NEWB NUCLEAR SAFETY AND CONTROL ACT AND REGULATIONS


dosimeter

means a device for measuring a dose of radiation that is worn or carried by an individual.

exposure device

means a radiation device that is designed for carrying out gamma radiography, and includes any accessory to the device such as a sealed source assembly, a drive mechanism, a sealed source assembly guide tube and an exposure head.

five-year dosimetry period

means the period of five calendar years beginning on January 1 of the year following the year in which these Regulations (Radiation Protection Regulations) come into force, and every period of five calendar years thereafter.

licensed activity

means an activity described in any of paragraphs 26(a) to (f) - listed below - of the Act that a licence authorizes the licensee to carry on:

(a) possess, transfer, import, export, use or abandon a nuclear substance, prescribed equipment or prescribed information;

(b) mine, produce, refine, convert, enrich, process, reprocess, package, transport, manage, store or dispose of a nuclear substance;

(c) produce or service prescribed equipment;

(d) operate a dosimetry service for the purposes of this Act;

(e) prepare a site for, construct, operate, modify, decommission or abandon a nuclear facility; or

(f) construct, operate, decommission or abandon a nuclear-powered vehicle or bring a nuclear-powered vehicle into Canada.

nuclear energy worker

means a person who is required, in the course of the person's business or occupation in connection with a nuclear substance or nuclear facility, to perform duties in such circumstances that there is a reasonable probability that the person may receive a dose of radiation that is greater than the prescribed limit for the general public.

nuclear substance

means:

(a) deuterium, thorium, uranium or an element with an atomic number greater than 92;

(b) a derivative or compound of deuterium, thorium, uranium or of an element with an atomic number greater than 92;

(c) a radioactive nuclide;

(d) a substance that is prescribed as being capable of releasing nuclear energy or as being required for the production or use of nuclear energy;

(e) a radioactive by-product of the development, production or use of nuclear energy; and

(f) a radioactive substance or radioactive thing that was used for the development or production, or in connection with the use, of nuclear energy.

one-year dosimetry period

means the period of one calendar year beginning on January 1 of the year following the year in which these Regulations (Radiation Protection Regulations) come into force, and every period of one calendar year thereafter.

radiation device

means:

(a) a device that contains more than the exemption quantity of a nuclear substance and that enables the nuclear substance to be used for its radiation properties; and

(b) a device that contains a radium luminous compound.

radiation survey meter

means an instrument that is capable of measuring radiation dose rates (mrem/h or mSv/h).

sealed source

means a radioactive nuclear substance in a sealed capsule or in a cover to which the substance is bonded, where the capsule or cover is strong enough to prevent contact with or the dispersion of the substance under the conditions for which the capsule or cover is designed.

sealed source assembly

means a sealed source that is designed to be used in an exposure device, and includes the components that are permanently attached to the sealed source.

unsealed source

means a source other than a sealed source.

worker

means a person who performs work that is referred to in a licence

 

APPENDIX II

DEFINITIONS FOR ALL USE TYPES

beta backscatter gauging

886

use of beta-emitting nuclear substances incorporated in radiation device to measure the thickness of material

bone mineral analysis

883

use of a radiation device to analyse bone in humans

borehole tube tagging

868

use of nuclear substances placed subsurface, or in equipment intended for subsurface use, for the purpose of borehole depth or direction determination

brachytherapy: manual

912

use of nuclear substances for therapy in humans to deliver radiation at a distance of up to a few centimetres, either by surface, intra cavitary or interstitial application. The sources are positioned manually, either by direct insertion or by insertion in a pre positioned appliance (manual afterloading)

brachytherapy: remote afterloader

 

 

 

 

 

low dose rate

 

high dose rate

 

 

 

 

 

 

 

913

**

914

**

use of sealed sources in prescribed equipment for therapy in humans to deliver radiation at a distance of up to a few centimetres, either by surface, intra cavitary or interstitial application. The sealed sources are placed in a pre-positioned applicator by a machine without the immediate presence of an attending person, by semiautomatic operation from a console. During the application the patient may be in a shielded room or bedside shielding may be in place.

total activity of all sealed sources used for therapy does not exceed 200 GBq.

total activity of the sealed sources used for therapy exceeds 200 GBq.

calibration

879

use of nuclear substances and radiation devices to determine the response of a radiation detection instrument

consolidated licence

857

849

841

a single licence issued to an institution to encompass a number of use types (most commonly laboratory studies) where the use is conducted in multiple areas, rooms or enclosures. Consolidated radioisotope licences are not intended to permit the following: radiography, the use of nuclear substances on or in humans, the production and distribution of nuclear substances, tracer studies or subsurface tracer studies

demonstration

908

possession of nuclear substances or radiation devices for demonstration purposes

dew point detection

896

use of nuclear substances in dew pointers

device manufacturing

864

production of radiation devices which contain sealed sources; servicing, demonstration and distribution are included

diagnostic nuclear medicine procedures

862

administration of unsealed nuclear substances to humans for diagnostic purposes related to their health care; processing of radiopharmaceuticals and laboratory studies which are part of the diagnostic studies are included

display or use of components containing radioactive luminous compounds

901

possession of instruments containing radioactive luminous nuclear substances for display or use

distribution

 

987

 

834

possession of radiation devices and nuclear substances for transfer only

the possession limit for each unsealed nuclear substance or the maximum activity for each sealed source is less than 1 GBq

the possession limit for each unsealed nuclear substance or the maximum activity for each sealed source is greater than 1 Gbq

electron capture detection

881

use of sealed sources in gas chromatography

electronic component testing

888

use of krypton-85 to test the integrity of electronic components

exposure device: development and testing

910

development and testing of exposure devices which contain sealed sources

fixed gauges

892

855

952

832

use of a radiation device in a fixed configuration to measure density, level, thickness or flow

fuel gauges on board aircraft

895

use of radiation devices to measure fuel level in aircraft wing tanks

gauging devices: development and testing

830

development and testing of gauges which contain sealed sources

human research studies

875

administration of unsealed nuclear substances to or external irradiation of humans for purposes not related to their personal health care; processing of radiopharmaceuticals and laboratory studies which are part of the human research study are included

industrial radiography

909

854

853

843

842

939

831

use of sealed sources in exposure devices for non-destructive testing

irradiation: pool-type

856

**

use of sealed sources in a shielded facility to irradiate any target material except humans

irradiation: self-shielded type

878

use of a radiation device to irradiate materials, but where the source remains shielded at all times

laboratory studies

838

837

836

use of unsealed nuclear substances in approved laboratories

lightning warning

904

use of nuclear substances for lightning warning

logging

861

845

use of sealed sources to obtain geological information

low energy imaging

884

use of nuclear substances to obtain images

manufacturing of sealed sources

851

manufacturing of sealed sources other than uranium, thorium and plutonium in a quantity less than 1000 TBq per calendar year

neutron activation

867

use of neutron emitting nuclear substances to activate materials for analysis

portable gauges

993

990

970

971

972

973

974

975

use of portable radiation devices to measure density, level, thickness or moisture content

processing

 

 

863

 

847

*

preparation or treatment of unsealed nuclear substances for commercial applications

the possession limit is less than 10 GBq for each unsealed nuclear substance

the possession limit is greater than 10 GBq but less than 1000 TBq per calendar year

radiography instruction

874

use of sealed sources and exposure devices for teaching purposes

radioluminescence

899

use of tritium activated self-luminous prescribed equipment

remote blade inspection

902

use of radiation devices to monitor helicopter blade integrity

removal of radioactive luminous compounds

865

possession of instruments containing radium; removal of radium and servicing are included

repair of components containing radioactive luminous compounds

885

possession of instruments containing nuclear substances solely for the purpose of servicing

research

 

889

873

use of sealed sources for research purposes

the maximum activity for each sealed source is less than 50 MBq

the maximum activity for each sealed source is greater than 50 Mbq

servicing, installation and dismantling of devices containing radioisotopes

866

possession of prescribed equipment for the purpose of servicing, installation or dismantling

smoke detection

903

possession and use of radiation devices for smoke detection

static detection

898

possession and use of radiation devices for static detection

static elimination

897

possession and use of radiation devices for static elimination

storage

906

possession of nuclear substances and radiation devices for storage only

subsurface tracer studies

846

release of unsealed nuclear substances into a well to trace movement in the well or adjacent formation

subsurface zone location

844

release of sand, gel, cement or other material labelled with nuclear substances into a well during fracturing or cementing operations to determine the depth and extent of a fractured or cemented zone

surge voltage protection

900

use of radiation devices to limit power surges in electronic components

teaching

 

894

907

use of sealed sources for teaching purposes

the maximum activity for each sealed source is greater than 50 MBq

the maximum activity for each sealed source is less than 50 Mbq

teletherapy

859

**

use of radiation devices for therapy in humans in which sealed sources are used to deliver a beam of collimated gamma rays to a patient at distances greater than a few centimetres

therapeutic nuclear medicine

872

administration of unsealed nuclear substances to humans for therapeutic purposes related to their health care; processing of radiopharmaceuticals and laboratory studies which are part of the therapy are included

tracer studies

858

field use of nuclear substances for industrial, environmental or research purposes other than use type Subsurface Tracer Studies"

x-ray fluorescence analysis

880

use of X-ray emitting nuclear substances in radiation devices for analysis purposes

veterinary nuclear medicine

915

administration of unsealed nuclear substances to animals for diagnosis or therapy; processing of radiopharmaceuticals and laboratory studies which are part of the study or treatment are included

 

* will be licensed as Class I Nuclear Facilities under the Nuclear Safety and Control Act.

** will be licensed as Class II Nuclear Facilities under the Nuclear Safety and Control Act.

APPENDIX III

OTHER DEFINITIONS

abandon *

means to voluntarily give up possession of a nuclear substance or radiation device without reference to any particular person or purpose.

borehole

drilled hole for petroleum exploration or production.

crawler control

use of a sealed source to remotely direct the movement of a radiography pipeline crawler unit.

dismantle

means to take apart a radiation device for the purpose of repairing, replacing, removing faulty components which may include the nuclear substance of that device (part of the licensed use type of servicing, installation and dismantling of devices containing radioisotopes).

export *

means to send a nuclear substance or prescribed equipment out of Canada.

import *

means to bring a nuclear substance or prescribed equipment into Canada.

install

means to mount and dismount a radiation device into its measuring position within a location authorized by a licence (part of the licensed use type of servicing, installation and dismantling of devices containing radioisotopes).

location

means any room, area, enclosure, land, base(s) of operations the licensee occupies, where the licensee uses or stores nuclear substances for more than 90 consecutive days.

package *

means to put a nuclear substance or radiation device into a form of containment for purposes of transport.

possess *

means to have the care and control of a nuclear substance or radiation device.

produce *

means to manufacture a radiation device.

service *

means to perform non-routine maintenance of a radiation device and may include repair, installation or dismantling.

store *

means to lay away for future purposes.

transfer *

means to change the possession of a nuclear substance or radiation device from one person to another.

transport *

means to handle, carry, store in transit and receive goods at the final destination. Transport includes normal and accident conditions encountered in carriage and in storage during transit.

 * Means a licensed activity listed in Section 26 of the Nuclear Safety and Control Act.