SEALED SOURCE DISPOSAL
The lack of land disposal, complex requirements for source stabilization, packaging, and transport
have resulted in significant increases in the cost of radioactive sealed source disposal. Cost savings can be accomplished by accumulating sources and consolidating radioactive sources from various generators into common containers for disposal.
NSSI accepts a full spectrum of radionuclide sources for such consolidation.
NSSI can assist generators with transport containers and transportation. As NSSI is the DOE OSRP consolidation facility, NSSI can assist generators in transferring sources to the program.
NSSI accepts a full spectrum of radioactive sealed sources. With special arrangements, NSSI can accept leaking sealed
sources and can provide source encapsulation where special form documentation is required.
NSSI can assist generators with obtaining the proper permits.
Cesium sources are fabricated from a variety of solid matrices containing Cesium 137. Old sources contained Cesium Chloride. Newer sources are usually fabricated using microspheres, ceramic pellets, or glass beads.
Small Cobalt sources are not commonly used in industry today as a result of the rigid restrictions on personnel exposure, the comparatively short half-life of Cobalt 60, and the difficulty of shielding the high energy gamma
lenissioit . Larger sources are usually found as a component of an irradiation device and are not normally land disposed.
Promethium sources were manufactured primarily as light sources. There are few still in use.
Strontium 90 sources are most often found in the form of eye applicators or thickness gauges. These sources have very thin windows and
have a high potential for leakage.
AMERICUM 241 BE
Large Americium 241 Be neutron sources are used primarily for oil well logging applications. Millicurie level sources find uses in gauging applications and for soil moisture measurement. There is currently no private sector land disposal facility which will accept these sources for disposal. DOE does accept such sources under it's Offsite Soure Recovery Project (OSRP) for permanent storage. Large sources can be opened and the contained Americium 241 reused for the manufacture of other new sources.
Americium 241 only sources are utilized for the 60 keV emitted radiation. These are most commonly found as a component of thickness gauges or bottle filling devices. The sources are normally fitted with thin windows that can be ruptured. The contained Americium is usually as a metal or ceramic to limit contamination in case of a rupture. These sources are accepted in the
DOE OSR Project.
Radium has been utilized for many years for industrial as well as medical
applications. While few Radium sources are fabricated today, thousands of
sources are still in routine usage. Radium 226 sources can be disposed at the
Richland site. Each generator who wishes to dispose of sources must possess a
use permit for the Richland site where the source is to be disposed before NSSI can
authorize shipment of radium sources.