Handling & Contamination Prevention Flashcards

What is the first step when handling C-14 to prevent contamination?

Answer: Wear lab coat, gloves, and eye protection

The first and most critical step to prevent contamination when handling C-14, or any radioisotope, is to wear appropriate personal protective equipment (PPE). A lab coat protects clothing, gloves prevent skin contact and transfer, and eye protection shields against splashes or airborne particles. This barrier minimizes direct exposure and the spread of radioactive material.

Which practice is essential in minimizing the spread of contamination?

Answer: Work in designated, labeled radioactive areas

Working in designated, labeled radioactive areas is essential for minimizing the spread of contamination. These areas are specifically equipped and managed to contain radioactive materials, preventing their inadvertent transfer to non-radioactive zones. Clear labeling ensures that personnel are aware of the hazards and follow appropriate safety protocols, thereby isolating potential contamination risks.

How should C-14 spills be cleaned?

Answer: Use spill kit and follow decontamination procedure

When a C-14 spill occurs, it is crucial to use a dedicated spill kit and follow established decontamination procedures immediately. A spill kit contains absorbent materials, protective gear, and waste bags designed to safely contain and clean up radioactive substances. Following a specific procedure ensures thorough decontamination, minimizes exposure, and prevents further spread of contamination.

What is the proper storage method for C-14 materials?

Answer: In sealed, labeled containers within secured areas

C-14 materials must be stored in sealed, labeled containers within secured areas to prevent accidental exposure, contamination, and unauthorized access. Sealing prevents leakage and evaporation, while proper labeling clearly identifies the contents and hazards. Storing them in secured areas adds a layer of physical security and ensures that only authorized personnel can access them, maintaining safety and regulatory compliance.

How often should contamination surveys be performed?

Answer: After every experiment involving radioactive material

Contamination surveys should be performed after every experiment involving radioactive material to promptly detect and address any spills or spread of radioactive substances. Regular monitoring ensures that work surfaces, equipment, and personnel are free from contamination before it can spread further. This proactive approach is vital for maintaining a safe working environment and preventing unnecessary exposure.

Which of the following is NOT an effective contamination control method?

Answer: Eating food in the lab

Eating food in the lab is explicitly NOT an effective contamination control method and, in fact, is a major risk factor for internal contamination. Food and drink can easily become contaminated with radioactive materials present in the lab, leading to ingestion and internal exposure. Strict policies against eating or drinking in radioactive areas are crucial for safety.

Why should radioactive work surfaces be covered?

Answer: To ease decontamination and reduce spread

Radioactive work surfaces should be covered with absorbent paper or other protective materials primarily to ease decontamination and reduce the spread of contamination. If a spill occurs, the covering can be safely removed and disposed of as radioactive waste, preventing the underlying surface from becoming contaminated. This practice simplifies cleanup and minimizes exposure risks.

Which personal behavior reduces contamination risk?

Answer: Not touching the face or mouth while working

Not touching the face or mouth while working with radioactive materials is a critical personal behavior that significantly reduces the risk of internal contamination. Hands can easily pick up radioactive particles, and touching the face, especially the mouth, eyes, or nose, can transfer these particles into the body. This simple practice helps prevent ingestion or absorption of radioactive substances.

What should be done before leaving a radiation area?

Answer: Conduct a contamination survey and remove PPE properly

Before leaving a radiation area, it is imperative to conduct a contamination survey to ensure that no radioactive material has been transferred to clothing or skin. Following this, personal protective equipment (PPE) must be removed properly to avoid spreading any potential contamination to clean areas. These steps are crucial for preventing the uncontrolled spread of radioactive materials and protecting personnel outside the controlled area.