What type of labs are required to have safety showers?

Safety showers are specifically required in laboratories that handle more than 5 gallons of corrosive or flammable liquids. This requirement is rooted in safety protocols aimed at ensuring that in the event of a spill, exposure, or an accident involving these hazardous materials, there is an immediate means for individuals to effectively decontaminate themselves. Corrosive substances can cause severe injuries upon skin contact, and flammable liquids present a significant fire risk, so having safety showers readily available is critical in mitigating these hazards.

The threshold of 5 gallons serves as a practical guideline, as smaller quantities may not pose the same level of risk. Laboratories that store liquids below this amount may not require such safety equipment, as the chances of needing immediate decontamination are less likely. Thus, the focus is on the potential severity of hazards, ensuring that proper safety measures are in place in environments with greater risk.

Options mentioning all university labs or only research labs do not take into account the specific quantities and types of materials being handled, while mentioning any quantity of liquids doesn't align with regulations designed to address serious safety concerns associated with larger amounts of hazardous substances.