The injured employee was washing out a 55-gallon barrel with a hose next to the U-drain. The U-drain screen was clogged so another employee removed one grate to remove the clog. The injured employee was about one foot from the U-drain washing the barrel and stepped into the unguarded drain. The U-drain was about 10 feet in length, 16 inches wide and about 3 feet deep and had hot water in it. The injured employee suffered second degree burns to the leg, waist and stomach.