|Gauges measure the flow of liquid through a pipe|
The Nuclear Regulatory Commission’s mission is to ensure radioactive materials are used safely. The NRC and its predecessor, the Atomic Energy Commission, have regulated the use of radioactive materials since 1946. “Byproduct material,” one type that the NRC regulates, has commercial, medical and academic uses.
There are four categories of byproduct material:
- Radioactive material that results from the fissioning, or splitting apart, of enriched uranium or plutonium in nuclear reactors. Examples include cobalt-60, cesium-137 and iridium-192.
- Tailings or waste produced by processing uranium or thorium from ore.
- Certain processed radium-226 or material that becomes radioactive in a particle accelerator used for a commercial, medical or research activity. Examples include fluorine-18, cobalt-57 and iodine-123.
- A naturally occurring radioactive source that is processed to increase its concentration and that the Commission decides could pose a threat to people and the environment similar to that of radium-226.
|Irradiators sterilize medical equipment or eliminate pests from food|
Uses of Byproduct Materials
Licensees use byproduct materials in civilian and military work. They are used in industrial radiography, gauging devices and well logging. The public also uses them in products such as smoke detectors, some exit signs, static eliminators and some luminous watch dials. Medical licensees use byproduct materials in more than 20 million procedures each year. They help diagnose and treat patients in hospitals, clinics or physicians’ offices. Colleges, universities and other institutions use byproduct materials in course work and research.
|Radiography cameras spot cracks in metal or pipe welds|
Byproduct materials are regulated by the NRC and 37 states that have signed agreements with the NRC giving them that authority. Known as Agreement States, these states issue licenses and currently regulate about 18,400 materials licensees. The NRC still has authority over security, import and export, and exempt distribution of consumer products—allowing their use without requiring a specific NRC license.
Following the terrorist attacks of Sept. 11, the NRC increased security requirements for the most radioactive byproduct materials. First, the agency issued orders to licensees. It later formalized the requirements in a new regulation, 10 CFR Part 37, published in March 2013. Security measures include background checks, personnel access controls, security barriers, unauthorized access detection and an armed law enforcement response. The NRC and state regulators conduct periodic inspections to make sure licenses are meeting these requirements.
|Iodine-125 and palladium -103 in implantable seeds are primarily used to treat prostate cancer
Source: Oak Ridge Associated Universities
|Portable gauges measure ground moisture or density|
The NRC regulates byproduct material use in 13 non-Agreement States, the District of Columbia, the Commonwealth of Puerto Rico, and other U. S. territories. The NRC also regulates its use by federal licensees in all states. Currently, the NRC oversees about 2,900 byproduct material licenses. Each year, the NRC reviews about 2,100 materials licensing actions, including new applications, amendments to existing licenses, license renewals, and sealed source and device reviews. The NRC inspects about 900 materials licensees each year. Agreement States administer about 87 percent of materials licenses.
The NRC conducts most of its materials licensing and inspection activities from its regional offices. The Office of Federal and State Materials and Environmental Management Programs oversees that program and provides technical support and guidance. The office periodically evaluates the technical adequacy, consistency and timeliness of both the regional and state programs to ensure they protect health and safety.