Released to supersede the older API 618 (Section 7) guidelines on pulsation, API 688 provides a standalone, more comprehensive framework. It bridges the gap between theoretical acoustic analysis and real-world mechanical integrity. The standard covers everything from piping design and pulsation dampeners to torsional analysis and on-site vibration testing.
Hydraulic fracturing pumps (typically quintuplex or triplex positive displacement pumps) generate significant pressure pulsations at the plunger stroke frequency. These pulsations travel through the discharge manifold, treating iron, zipper manifolds, and wellhead connections. Without proper analysis and damping, cyclic stresses can lead to: api 688 pdf
(primary focus, often used with API 618 ). Released to supersede the older API 618 (Section
The standard details 3D finite element methods and acoustic simulation to predict "shaking forces" that cause vibration. The standard details 3D finite element methods and
The standard is strict about "Analytical Validation." If a calculation shows high stress, the PDF specifies exactly how to place strain gages on the actual shaft to prove the model is correct (typically within 80% accuracy).
: To establish consistent procedures that control pressure pulsations and mechanical vibrations in piping and auxiliary systems. 🛠️ Key Topics Covered in the PDF
Released to supersede the older API 618 (Section 7) guidelines on pulsation, API 688 provides a standalone, more comprehensive framework. It bridges the gap between theoretical acoustic analysis and real-world mechanical integrity. The standard covers everything from piping design and pulsation dampeners to torsional analysis and on-site vibration testing.
Hydraulic fracturing pumps (typically quintuplex or triplex positive displacement pumps) generate significant pressure pulsations at the plunger stroke frequency. These pulsations travel through the discharge manifold, treating iron, zipper manifolds, and wellhead connections. Without proper analysis and damping, cyclic stresses can lead to:
(primary focus, often used with API 618 ).
The standard details 3D finite element methods and acoustic simulation to predict "shaking forces" that cause vibration.
The standard is strict about "Analytical Validation." If a calculation shows high stress, the PDF specifies exactly how to place strain gages on the actual shaft to prove the model is correct (typically within 80% accuracy).
: To establish consistent procedures that control pressure pulsations and mechanical vibrations in piping and auxiliary systems. 🛠️ Key Topics Covered in the PDF
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