HPS N43.4-2005

$9.75

Classification of Radioactive Self-Luminous Light Sources

Published By	Publication Date	Number of Pages
HPS	2005	17

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Description

This standard establishes the classification of certain
radioactive self-luminous light sources according to radionuclide,
type of source, activity and performance requirements. The standard
does not attempt to establish design or safety standards, but
leaves the design features to the judgment of the supplier and
user, provided that the performance requirements are met.

This standard does not specify the luminance of the
self-luminous light source; however, many of these sources are used
for safety proposes. Therefore, the luminosity must be commensurate
with the intended use of the source(s).

Note: Radioactive self-luminous light sources used in or on
timepieces are not covered by this standard. The following
documents apply to radioluminous timepieces:

a. International Atomic Energy Agency, Radiation Protection
Standards for Radioluminous Timepieces, Safety Series No. 23,
Vienna, 1967.

b. International Association for Standardization,
Radioluminescence for Time Measurement Instruments – specifications
(ISO 3157), Geneva, 1975.

c. Nuclear Energy Agency, Radiation Protection Standards for
Gaseous Tritium Light Devices, Organization for Economic
Co–operation and Development, Paris, 1973.

The objectives of this standard are to establish minimum
prototype testing requirements for radioactive self-luminous light
sources, to promote uniformity of marking such sources, and to
establish minimum physical performance for such sources.

This standard is primarily directed toward ensuring adequate
containment of the radioactive material. Other factors, such as
quality control, external radiation levels, radiotoxicity of the
radionuclide, its chemical and physical form, and quantity of
radioactive material in the source, also shall require
consideration in view of the everpresent objective of keeping
exposures as low as is reasonably achievable (ALARA). Compliance
with this standard does not necessarily satisfy all requirements
for manufacture and use that may be imposed by governmental
regulatory agencies.