Nine Minutes of Knowledge
HD Technology Saves an Extruder Gear Pump
A gear pump was used in a plastic extruder, where the gear’s head pumps the plastic mold from the barrel into the pelletizer. The extruder was already fitted with a condition monitoring system, but in early 2016 our customer decided...
- Rick Verbij
- SPM Netherlands
HD Technology Shines in an Ultra-Low-RPM Application
The support wheel bearings in a calciner case had an ultra-low rpm: 3.4–3.9. The customer had been utilizing a traditional vibration analysis system for a number of years, but they lacked a pre-warning time and faced high risk…
- Rick Verbij
- SPM Netherlands
Oil and Gas Applications of Piping
I'd like to focus now on oil and gas applications, where we've had a lot of success with structures and piping. Because motion amplification is non-contact, it allows us to look at these large petrochemical plants offshore and onshore...
- Stuart Walker
- Reliability Maintenance Solutions Ltd
The Critical Angle of Ultrasonic Electrical Inspection of Transmission Line
Electrical ultrasound inspection is one of the most unique applications, as it is not dependent on decibel levels as much as the patterns the anomaly produces. However, limited approach restrictions can make it difficult to get…
- Drew Walts
- IRISS
Four Electrical Failure Modes
Electrical failure modes can be divided into four main categories. This tip will briefly discuss these categories and their associated thermal patterns to help the field thermographer better understand and identify thermal anomalies found in the field...
- Roy Huff
- The Snell Group
Suspect Resonance? Check What the Machine Is Sitting on
The motor in this case study was brought in for a routine PM during the plant’s scheduled downtime. During the run test, they experienced very high vibration, but nothing else was abnormal…
- Ali Al-Shurafa
- Saudi Aramco
Diagnosing and Correcting Resonance in a Vertical Seawater Pump
This case involves a vertical cooling seawater pump in a power plant. The speed is 600 rpm, and it had no noise or operational issues. The current was normal, but they received…
- Ali Al-Shurafa
- Saudi Aramco
How Does Motion Amplification Work?
Motion amplification uses a camera and a collection system. We use the pixels of the camera as vibration sensors—each pixel becomes a vibration sensor. The idea here is that...
- Stuart Walker
- Reliability Maintenance Solutions Ltd
Improving Condition Monitoring in Public Service Buildings
Some people are surprised to hear about condition monitoring being applied in a library. In the Bibliotheca Alexandrina, we have 60 or more pumps, around 100 AHUs, and around 11 transformers and generators. We started the condition monitoring program in...
- Eslam Abdelmohsen
- Bibliotheca Alexandrina