Question 264General Subjects - QMED

The correct answer is A) Scoring may result. The use of metallic or semi-metallic packing hooks or pullers should be avoided on bronze or brass shafts, rods, plungers, or sleeves because they can cause scoring on the soft metal surfaces. Scoring refers to the creation of small grooves or scratches on the metal, which can lead to leaks and other issues. Bronze and brass are softer metals compared to steel, and the use of harder metallic tools can easily damage their surfaces. To avoid this, it is recommended to use non-metallic tools, such as wooden or plastic packing hooks or pullers, when working on these components. The other answer choices are incorrect because they do not directly address the issue of scoring caused by using incompatible tools on soft metal surfaces. Bonnet corrosion, heat transfer restriction, and valve seat damage are not the primary concerns in this scenario.