Final answer:
The Code of Federal Regulations Part 20 includes measures for the security of radioactive materials, requiring protective clothing and shielded containers for storage. These regulations also specify the design of nuclear reactors to include steel or concrete domes, which form part of an extensive shield and containment system.
Step-by-step explanation:
The question pertains to the Code of Federal Regulations Part 20, which sets the Standards for Protection Against Radiation. While the question seems to be seeking a true or false answer, there is no statement provided to evaluate as true or false. However, it is factual that the security and safety measures for handling radioactive materials are part of these regulations. These measures ensure that radioactive materials are handled in a way that protects not just the workers, but also the public and the environment from harmful radiation exposure.
Workers are often required to wear protective clothing such as heavy clothes, gloves, and lab coats to minimize exposure. Additionally, radioactive materials must be stored in properly shielded containers, with specific containment requirements for different radioisotopes, such as cobalt-60 and molybdenum-99, to prevent radiation leaks. Even the syringes used to inject radioactive materials are shielded to protect the medical personnel.
For example, cobalt-60, as a strong gamma emitter, requires substantial shielding, typically lead or concrete, while molybdenum-99, being a beta emitter, can be contained with lighter materials such as plastic or glass to stop beta particles.
Nuclear reactors, which produce a significant amount of radiation, are covered with a steel or concrete dome, designed to contain radioactive material releases in the event of an accident. More comprehensive protection involves a shield and containment system, which protects workers from radiation and accommodates high temperatures and pressures from reactor operations.