This recommended practice (RP) supplements API 510 by providing pressure vessel inspectors with information that

can improve skills and increase basic knowledge of inspection practices. This RP describes inspection practices for

the various types of pressure vessels (e.g. drums, heat exchangers, columns, reactors, air coolers, spheres) used in

petroleum refineries and chemical plants. This RP addresses vessel components, inspection planning processes,

inspection intervals, methods of inspection and assessment, methods of repair, records and reports. API 510 has

requirements and expectations for inspection of pressure vessels.