13th Edition Verified - Api 610

| Test | 12th Edition | 13th Edition | |------|-------------|---------------| | Hydrostatic test | 1.5 x MAWP for 30 min | (casing and seal chamber separately) | | Mechanical run test | 4 hours | 6 hours minimum for new pumps; 2 hours for re-rates | | NPSH test | 3 points | 5 points (including two below 3% head drop) | | Vibration test | In-situ filter | Frequency band analysis mandatory (10–1000 Hz) plus bearing housing velocity (≤ 3.0 mm/s RMS) | | Performance test tolerance | ± 5% head at rated flow | ± 4% head ; efficiency tolerance tightened to ± 3% |

for critical rotating equipment.