What does a modification nameplate indicate?

A modification nameplate provides vital information regarding any alterations or adjustments made to a piece of equipment, such as a pressure vessel. It serves as a record of these changes, ensuring that operators and inspectors have access to important details that may impact the safe operation and maintenance of the equipment. By indicating modifications, the nameplate helps to ensure compliance with safety standards and regulations, allowing for proper assessment of the vessel's ongoing integrity after any changes have been made.

The other options do not accurately represent the function of a modification nameplate. While the full specifications of a pressure vessel and original manufacturing details are important, they are typically found on the original nameplate rather than a modification nameplate. Certification for operation is also not indicated on a modification nameplate; that typically involves a separate assessment of compliance with operational standards. Thus, indicating partial information on a modification or alteration best describes the role of a modification nameplate.