Types of Equipment

Types of equipment that are covered in API RP 581:
 * Pressure Vessels – all pressure containing components
 * Process Piping – pipe and piping components
 * Storage Tanks – atmospheric and pressurized
 * Rotating Equipment – pressure-containing components
 * Boilers and Heaters – pressurized components
 * Heat Exchangers – shells, heads, channels and bundles
 * Pressure Relief Devices

The following equipment are NOT covered in API RP 581:
 * Instrument and Control Systems
 * Electrical Systems
 * Structural Systems
 * Machinery Components – except pump and compressor casings