: Adding heavy-duty clamps, shoes, and anchors to shift the piping's mechanical natural frequency upward.
is a technical report (TR) produced by the American Petroleum Institute. It serves as a comprehensive guide for engineers to minimize vibration and pulsation issues in systems using reciprocating compressors and pumps. Key Purpose of API 688 While standards like (reciprocating compressors) and api 688 pdf
API 688 provides standard procedures for optimizing the acoustic and mechanical design of positive displacement pump piping systems. It serves as a companion standard to (Reciprocating Positive Displacement Pumps) and API 675 (Controlled Volume Positive Displacement Pumps). : Adding heavy-duty clamps, shoes, and anchors to
API 688 requires a of the fluid system. This simulation predicts pulsation levels at the pump stroke frequency and its harmonics. The acceptable pulsation amplitude (typically peak-to-peak pressure ripple) must not exceed a defined percentage of the mean line pressure—usually 5% to 10%, depending on service severity. Key Purpose of API 688 While standards like
Before API 688, the requirements for managing these dynamic forces were scattered across multiple, individual equipment standards. API 688 consolidates these requirements, creating a unified and consistent framework for controlling pulsation and vibration. It establishes the minimum requirements for engineering analysis and design, ensuring that new machinery systems are not just powerful, but also safe and durable.