Problems with the overspeed test of newly manufactured impellers or repaired impellers
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Let’s discuss this: Those who have relevant knowledge should provide the relevant standards. For newly manufactured or repaired impellers, an overspeed test must be conducted before they are installed on the rotor. The overspeed should be （） times the normal operating speed, the overspeed test should last （） minutes, and the dimensional changes in all parts after the test should not exceed （）%.
Newly manufactured or repaired impellers should undergo an overspeed test before being installed on the rotor. The test speed should be 1.1 times the normal operating speed, with the overspeed duration being 2 minutes; after the test, the dimensional changes in all parts must not exceed 0.05%. Standard JB/T 6445-2005: Over-speed test for impellers of industrial ventilators
Detailed instructions are available in API617
The API specifications differ from the national standards, so it depends on which manufacturer the device is from
API617 is the most fundamental standard in the centrifugal compressor industry. Of course, it’s understandable if individual equipment manufacturers do not follow API617, but can users be confident in such a situation?