The interior of a coating tank containing flammable liquid is classified as what location?

The interior of a coating tank containing flammable liquid is classified as Class I, Division 1 due to the presence of flammable vapors that can be ignited under normal operating conditions. Class I locations are specifically designated for areas where flammable gases or vapors are present in the atmosphere.

In a coating tank, flammable liquids can release vapors that are ignitable, particularly when the tank is being filled, emptied, or agitated. The classification as Division 1 indicates that these flammable gases or vapors are likely to be present continuously or for long periods, thereby creating an environment where sparks, open flames, or other sources of ignition could cause a fire or explosion.

This classification is critical for ensuring that appropriate safety precautions are taken, such as using explosion-proof equipment and appropriate ventilation, to mitigate risks in environments where flammable materials are handled. Other classifications do not accurately reflect the hazards posed by the flammable liquid within the tank.