Question 49 QMED05 - Machinist-Pump Technician

The Correct Answer is D **Why option D ("Full-face shield and safety goggles") is correct:** Option D provides the maximum level of redundant protection against severe exposure to airborne impact hazards. * **Safety Goggles (primary protection):** Eyecup or cover-type goggles (A) seal completely around the orbital area, protecting the eyes from particles approaching from any angle (front, side, top, or bottom). This is generally superior to safety glasses for high-impact or dust environments. * **Full-Face Shield (secondary protection):** The face shield protects the entire face (eyes, nose, mouth, and adjacent skin) from large impacts, flying debris, and severe exposure velocity. * **Redundancy:** When used together, the face shield acts as the first line of defense, dissipating the initial energy of the hazard. The safety goggles serve as the second, crucial layer, ensuring that fine particles, dust, or fragments that may slip around or beneath the shield still cannot reach the eyes. In severe exposure scenarios, redundancy is essential for the "best protection." **Why the other options are incorrect:** * **A) Eyecup or cover-type safety goggles:** While providing excellent primary eye protection and sealing against dust, goggles alone leave the rest of the face exposed to impact hazards. This is not the "best protection" for *severe exposure* where the face itself is at risk. * **B) Side-shielded safety glasses:** Safety glasses provide the least protection of all options listed. They do not seal around the eyes, allowing dust or small debris to enter from above, below, or the sides, and they offer no protection for the rest of the face. * **C) Full-face shield:** A face shield alone is considered secondary protection. Although it protects the entire face, airborne debris can enter the gap between the bottom/sides of the shield and the wearer's head, potentially reaching the eyes. Therefore, standard safety practice requires primary eye protection (goggles or glasses) to be worn underneath the face shield for complete protection.