Which organization is primarily responsible for the safety regulations of radioactive materials in the United States?

The organization primarily responsible for the safety regulations of radioactive materials in the United States is the Nuclear Regulatory Commission (NRC). The NRC is tasked with overseeing the use of radioactive materials to ensure they are used safely and securely, particularly in the fields of nuclear energy, medical applications, and industrial uses. This includes establishing safety standards and regulations for the handling, storage, and disposal of nuclear materials. Their role is critical in protecting public health and safety as well as the environment from potential hazards associated with radiation exposure.

While other agencies like the FDA, EPA, and CDC have important roles related to health and safety, their focus is different. The FDA regulates food and drug safety, the EPA focuses on environmental protection, and the CDC is involved in public health and disease control. Each agency has its specific mandate, but when it comes to the oversight of radioactive materials specifically, the NRC holds the primary responsibility.