What is the limit for light corrosion in terms of depth?

What is the limit for light corrosion in terms of depth?

• A. 0.5 mil (0.0005 inch)
• B. 0.001 inch
• C. 0.01 inch
• D. 0.1 inch

Answer: (B)

Light corrosion is allowed to depths up to 0.001 inch. That means any area where the corrosion has penetrated no more than one thousandth of an inch can be cleaned, treated, and repainted without elevating to a more extensive repair. If the corrosion exceeds 0.001 inch, it moves into a more serious category that typically requires greater corrective action or replacement to maintain structural integrity. The other values are either shallower or far deeper than the limit: 0.5 mil is within the light range but not the boundary, while 0.01 inch and 0.1 inch exceed the light category and would require more extensive repair.

Light corrosion is allowed to depths up to 0.001 inch. That means any area where the corrosion has penetrated no more than one thousandth of an inch can be cleaned, treated, and repainted without elevating to a more extensive repair. If the corrosion exceeds 0.001 inch, it moves into a more serious category that typically requires greater corrective action or replacement to maintain structural integrity. The other values are either shallower or far deeper than the limit: 0.5 mil is within the light range but not the boundary, while 0.01 inch and 0.1 inch exceed the light category and would require more extensive repair.