Breaking a hose connection can send a jet of liquid refrigerant across your hands and face. Which protective equipment is intended to guard against the frostbite injury that liquid contact causes?
- AA paper dust mask worn over the nose and mouth while working
A dust mask handles airborne particles a worker might breathe in. It offers no barrier at all to a liquid jet reaching the eyes or the skin of the hands, which is the injury in question.
- Splash resistant safety goggles together with insulated gloves
- CThin latex exam gloves and everyday prescription eyeglasses for the job
Thin latex gloves tear easily and insulate almost nothing, and ordinary eyeglasses leave the sides of the eyes open to a spray. This combination looks like protection without performing as protection.
- DHearing protection and steel toe work boots on the job
Hearing protection and safety boots are legitimate jobsite gear for other hazards. Neither one does anything about liquid refrigerant reaching skin or eyes when a hose is broken loose.
Why B is correct
Goggles and insulated gloves are the two items aimed directly at liquid contact. Goggles seal around the eyes so a spray cannot reach them from the side, and gloves that are thick enough to insulate keep the boiling liquid off the skin long enough to prevent freezing.
What this question is testing
The question checks basic recognition that liquid refrigerant causes cold burns and that eye and hand protection are the specific countermeasures. It also checks whether a candidate can tell real protection from gear that only looks protective, such as thin gloves and open sided glasses.
On the job
The classic injury happens at the gauge manifold. A tech assumes the hose is empty, cracks the fitting with bare hands, and gets a shot of liquid across the fingers or into an unprotected eye. Shops that take this seriously keep goggles clipped to the manifold case so there is no excuse to skip them. The habit that prevents most of these injuries is simple: goggles and gloves go on before any connection is made or broken, every single time, not just on big jobs.
Memory technique
Liquid refrigerant is boiling cold. Treat the hose like it is full of liquid nitrogen and dress accordingly.
Exam tip
Answers naming goggles and gloves together are usually correct on refrigerant contact questions. Safety glasses alone are treated as insufficient because they do not seal.
Where to look it up
Liquid refrigerant contact equals frostbite. Required gear is goggles plus gloves.