Sealed source definitions

["Richard J Sobilo"<rjsobilo@beckman.com>]

Radsafers;

The following are definitions from which you may pick your favorite: SEALED
SOURCES

ICRP 36-1982
An amount of radioactive material in fixed form.

NBS 66-1958
Radioactive material that is incased in, and is to be used in, a container
in a manner intended to prevent leakage of the radioactive material. Unles
stated otherwise, the term "sealed source" in this Handbook is understood
to refer only to sources containing radioactive material that emit beta
rays (whether or not it also emits alpha, gamma or other radiation, and
whether or not the beta rays are totally shielded by the container).

NBS73-1960
Radioactive material that is incased in, and is to be used in a manner
intended to prevent leakage of the radioactive material.


USAS N13.2-1969
A radioactive source sealed in a container or having a bonded cover, where
the container or cover has sufficient mechanical strength to prevent
contact with and dispersion of the radioactive material under the
conditions of use and wear for which it was designed.

RHH-1970
A radioactive source sealed in an impervious container which has sufficient
mechanical strength to prevent contact with and dispersion of the
radioactive material under the conditions of use and wear for which it was
designed.

ICRU 18-1970
A sealed source consists of radioactive and inert material designed to be
used in such a way that the active material does not enter into immediate
contact with the source surroundings. It is comprised of one or more units
such as discs, pellets or rods, or sometimes fine grains, incorporating
radioactive  and inactive materials, sealed in an envelope or capsule of
sufficient strength to prevent, under normal conditions of use, any
dispersion of radioactive substances.

ANSI N1.1-1976
A radioactive source sealed in a container or having a bonded cover, the
container or cover being strong enough to prevent contact with and
dispersion of the radioactive material under the conditions of use and wear
for which it was designed.

NCRP 48-1976, NCRP 49-1976
(Same as RHH-1970)

ANSI N432-1980
Radioactive material packaged in one or more capsules sealed to prevent
escape of the radioactive material. The capsule or capsules are essentially
transparent to the desire radiation.


Sorry but that's all I could find.

Regards,

Rich Sobilo
Radiation Safety Officer
Beckman Instruments, Inc.
rjsobilo@beckman.com