“Create a design FMEA for a centrifugal pump: mechanical-seal wear from abrasive solids causing process-fluid leaks, dry running after loss of suction flow causing shutdown, impeller erosion from high particle velocity reducing flow, and coupling misalignment from incorrect installation causing vibration. Include material review, low-flow trip, leak, commissioning, performance and vibration tests as controls.”
看懂背後的決策。
Check compatibility with abrasive process fluid.
Trip the pump when suction flow is lost.
Test erosion against the expected particle velocity.
Verify coupling alignment during installation.
Use this DFMEA when a pump design needs risks ranked before detailed release testing.
常見問題
What is a pump DFMEA?
It is a design FMEA that identifies pump failure modes, their effects, causes and controls before the design is released.
Why include a mechanical seal?
The seal contains process fluid, so wear or dry running can cause leakage or a pump shutdown.
What should the ratings reflect?
Rate the actual effect, expected cause frequency and ability of current controls to detect the failure for the application.