Which factor should be minimized to ensure a safe environment during operations involving flammable materials?

Minimizing vapor concentration is crucial in ensuring a safe environment during operations involving flammable materials because high concentrations of flammable vapors can lead to explosive atmospheres. When flammable vapors accumulate to a certain level in the air, they can ignite if an ignition source is present, resulting in fires or explosions. Therefore, controlling and minimizing vapor concentrations is a key safety measure in preventing hazardous incidents.

Maintaining low vapor concentrations involves proper ventilation, the use of appropriate containment and storage methods, and ensuring that any spills or leaks are promptly addressed. Effective monitoring and management of vapor levels help to maintain safety standards and protect personnel, equipment, and the surrounding environment from potential fire hazards.