Waste Management
A disused sealed radioactive source is an accident waiting to happen,
if it is not stored securely, conditioned, or disposed of properly. When
a source no longer has a useful purpose, it should be disposed of permanently,
and not stored at the user’s premises. Keeping old sources just
in case (for such uses as back-up to a current source, etc.) is not a
good practice. They can be forgotten, or lost or stolen.
Interim storage may be acceptable: if the facility is secure to prevent
loss or theft; the source is properly conditioned so as to improve its
shielding and stability; and proper records and periodic physical checks
of the sources in interim storage are made. Given the possibility that
such a source could be stolen and used for wrong purposes, good security
must be assured.
When a source no longer has any use, the responsible regulatory authority
should be notified and arrangements made for its management, either by
| returning it to the manufacturer for disposal
when feasible; or |
| transporting the source to the waste operator. |
In Conclusion
The most effective means to prevent accidents with sealed radioactive
sources is to adopt work habits that reduce the likelihood of a source
becoming lost. The onus is on those professionals using
sources to take the necessary steps to protect the public, the environment,
and themselves from the serious consequences of an accident, each and
every time they work with a radioactive source. Sources no longer in use
should be transferred to the national waste operator as soon as possible.