Centrifugal Pump Inspection & Material PMI Testing
Pump technical inspection, functional testing and material PMI testing are performed by VICC on various types of water pumps before shipment or during the project.
Detection Scope
This project's detection scope covers various types of water pumps, including but not limited to: heating water pumps, submersible pumps, mixed-flow pumps, cooling water pumps, electric water pumps, centrifugal pumps, feed water pumps, drainage pumps, horizontal pumps, vertical pumps, inclined pumps, single-stage pumps, multi-stage pumps, single suction pumps, double suction pumps, directly connected pumps, gear-driven pumps, self-priming pumps, boiler feed water pumps, circulating pumps, sewage pumps, fire pumps, process pumps, booster pumps, corrosion-resistant pumps, cast iron pumps, stainless steel pumps, plastic pumps, fluoroplastic pumps, engineering plastic pumps, etc.
Testing Items
- Appearance and structure inspection — check the pump body surface for cracks, corrosion and deformation; verify flange connection tightness and foundation fixation.
- Performance parameter testing — measure actual flow, head and power with flow meters and pressure gauges, and compare with rated values.
- Sealing system inspection — airtightness test for mechanical or packing seals, and infrared thermal imaging for abnormal temperatures in the sealing area.
- Vibration and noise analysis — vibration spectrum analyzer for bearing vibration speed and sound level meter for operating noise.
- Electrical system diagnosis — motor insulation resistance, three-phase current balance and terminal overheating check.
- Material corrosion assessment — ultrasonic thickness measurement and corrosion pit depth check on impeller and pump casing.
- Bearing and lubrication inspection — raceway wear marks, clearance changes and lubricating oil spectral analysis.
- Intelligent diagnosis and data recording — online monitoring of vibration, temperature and pressure with trend analysis.
Testing Basis
The inspection work is mainly carried out in accordance with the standards such as GB/T3216 "Acceptance Test for Rotating Power Pumps" and API610 "Centrifugal Pumps for the Petroleum, Heavy Chemical and Natural Gas Industries".