Question

Select the correct penetrameter thickness for 2% sensitivityWhen radiographing a weldment 1.25 inches in thickness.

a) 0.012 in.
b) 0.015 in.
c) 0.025 in.
d) 0.030 in.

Answer 1

The correct penetrameter thickness for 2% sensitivity when radiographing a weldment 1.25 inches in thickness is 0.025 inches, which corresponds to option c) 0.025 in.

Step-by-step explanation:

The question asks to select the correct penetrameter thickness for 2% sensitivity when radiographing a weldment 1.25 inches in thickness. The 2% sensitivity rule is a guideline in radiographic testing that suggests the penetrameter (also known as an image quality indicator) thickness should be 2% of the thickness of the specimen being tested. Therefore, we can calculate the appropriate penetrameter thickness by taking 2% of 1.25 inches.

Calculation:

• 1.25 inches × 0.02 = 0.025 inches

Thus, the correct penetrameter thickness for a weldment 1.25 inches thick at 2% sensitivity would be 0.025 inches, which corresponds to option c) 0.025 in. This ensures that the resulting radiograph will have the desired sensitivity to reveal any imperfections in the weldment according to the quality standards.