Transferring Class I liquids up to 18 inches above the floor occurs in which classification?

Transferring Class I liquids up to 18 inches above the floor occurs in which classification?

• A. Class I, Division 2
• B. Class II, Division 2
• C. Class II, Division 1
• D. Class I, Division 1

Answer: (A)

In Class I locations, we’re dealing with flammable liquids and their vapors. The Division designation tells you whether those hazardous vapors are present all the time (Division 1) or only under abnormal or specific operating conditions (Division 2). Transferring Class I liquids creates vapors that can be present in the space above the floor, but only during the transfer operation, not during normal, steady operation of the area. The fact that these vapors can reach up to 18 inches above the floor during the transfer means the hazard isn’t constant, so the area falls under Class I, Division 2. So, this scenario points to a Class I location with Division 2 protection (not Class II, which covers dusts, and not Division 1, which would imply a normal, ongoing presence of vapors).

In Class I locations, we’re dealing with flammable liquids and their vapors. The Division designation tells you whether those hazardous vapors are present all the time (Division 1) or only under abnormal or specific operating conditions (Division 2). Transferring Class I liquids creates vapors that can be present in the space above the floor, but only during the transfer operation, not during normal, steady operation of the area. The fact that these vapors can reach up to 18 inches above the floor during the transfer means the hazard isn’t constant, so the area falls under Class I, Division 2.

So, this scenario points to a Class I location with Division 2 protection (not Class II, which covers dusts, and not Division 1, which would imply a normal, ongoing presence of vapors).