API 687 demands runout checks. demands laser shaft alignment and white light interferometry for profile measurement.
For instance, while major erosion or corrosion can often be repaired by welding, rub damage must be carefully assessed for surface cracks and heat-affected zones before deciding on a repair method. api+687+rotor+repair+pdf+download+better
The API 687 (Recommended Practice for Special-Purpose Rotating Equipment Repairs) is the industry-standard guide for inspecting and overhauling critical rotors, bearings, and couplings in the petroleum and gas sectors. The latest version is the , which significantly expanded on the original 2001 release to improve safety and operational reliability. Core Repair & Inspection Guidelines API 687 demands runout checks