This recommended practice (RP) provides supplementary guidelines and practices for welding and welding related topics for shop and field fabrication, repair and modification of the following:
a) pressure-containing equipment such as pressure vessels, heat exchangers, piping, heater tubes, and pressure boundaries of rotating equipment and attachments welded thereto;
b) tanks and attachments welded thereto;
c) non-removable internals for process equipment;
d) structural items attached and related to process equipment;
e) other equipment or component items when referenced by an applicable purchase document.
