API 570 pdf download

API 570 pdf download,Piping Inspection Code-Inspection, Repair, Alteration, and Rerating of In-service Piping Systems For the purposes of this standard, the following definitions apply. 3.1 alteration: A physical change in any component that has design implications affecting the pressure containing capability or flexibility of a piping system beyond the scope of its design. The following are not considered alterations: comparable...