API Standard 688 (formally API STD 688) specifies the minimum requirements for pulsation and vibration control
Second is the Disassembly and Inspection (D&I) . This phase is the standard’s backbone. It requires detailed documentation of clearances, component condition, and material degradation using specific codes (e.g., visual, magnetic particle, or liquid penetrant testing). The standard provides a standardized "Inspection Grading" system, allowing a technician in Texas to communicate the severity of wear to an engineer in Singapore without ambiguity. api 688 pdf
Primary Goal: To provide a unified framework for pulsation and vibration control that was previously scattered across individual machinery standards. API Standard 688 (formally API STD 688) specifies