What should be managed to ensure that fittings for medical gas work are safe?

The correct choice emphasizes the critical safety protocols involved in managing fittings for medical gas systems. Medical gases are used in various healthcare settings, including hospitals, operating rooms, and emergency care, where the utmost cleanliness and safety are paramount.

Keeping fittings free of grease or oil is essential because these substances can pose significant hazards. Grease or oil can react with the gases, potentially leading to fires or explosions. Medical gases, particularly oxygen, can exacerbate combustion processes. Therefore, ensuring that fittings are clean and devoid of flammable substances is a fundamental practice in preventing accidents and ensuring the safety of patients and healthcare providers.

While other factors such as proper labeling, temperature control, and lubrication can contribute to the overall safety and functionality of medical gas systems, they do not address the immediate risk that contaminants like grease and oil present. Therefore, prioritizing cleanliness is crucial in managing fittings effectively and ensuring a safe environment for medical gas work.