I.C.A.S.T Short Course

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Prudence Hollie Jordan
5 years ago
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1 I.C.A.S.T Short Course

2 Reducing Costs Maintenance budgets have been reduced in recent years as organizations attempt to improve their bottom lines, increase productivity, improve cash flow, and lower operating costs and downtime.

3 Aging Components Much of our aging infrastructure equipment has been in service for 20 years or more. Increasing the probability of some type of malfunction or even failure. Which could realistically devastate a planned maintenance budget.

4 How Do Thermal Imagers Work? Thermal imagers work by the passive detection of infrared light/heat through various means. They convert the signal generated by the detectors into a visual image that can be used to demonstrate the condition of equipment or objects. Some thermal imagers can generate non-contact temperature measurements.

5 Common materials that are transparent to thermal imagers Germanium Zinc Selenide CaF 2 /BaF 2 Salt Diamond Some Polymers Air A few others

6 Visible and Infrared Light

7 Visible and Infrared Light

8 Do all Infrared Cameras Measure Temperature?

9 What Tools Can Be Used? Infrared Camera Millivolt Drop Test Airborne Ultrasound Current and THD Measurements

10 The many Palettes of IR Most thermographers have a favorite palette. Certain palette are better than others for example: The Rainbow High Contrast (HC) is excellent when surveying buildings or roofs. Ironbrow is generally the best palette for electrical/mechanical surveys.

11 Non-Radiometric

12 Thermal Imaging Applications Electrical Building Envelopes Roof Inspections Mechanical Systems Medical Veterinarian Research and Development (R&D) Many others.

13 Applications Condition Based Maintenance Research and Development Medical and veterinary Quality control and process monitoring Non-destructive testing And many others!

14 IR and NVG There is a misconception that NVG and Infra red are the same medium but this is untrue. Night Vision requires visible light where as Infra red uses heat a its medium giving greater contrast. Let s watch this video from FLIR.

15 Thermal Imaging vs. Night Vision Night vision Amplifies small amounts of visible light Requires some light i.e.. moonlight or starlight Thermal imaging Detects heat energy emitted by objects Requires absolutely no light Totally unaffected by light sources

16 Why is temperature important? Name some processes industrial or otherwise, where temperature is important? Name one process where temperature is completely unimportant?

17 Why is Thermography Useful? Non-contact Keeps user out of danger Doesn t intrude upon or affect target

18 Two-dimensional Imagining Compares areas of target Excellent overview of target Thermal patterns easily analysed

19 Real time video Very fast scanning of stationary targets Capture of fast moving targets Capture of fast changing thermal patterns

20 Benefits of Thermography Reduce unscheduled power outages Detect problems quickly, without interrupting service Assess priorities for corrective action

insurance company requirements Check for

21 Benefits of Thermography Minimize preventive maintenance and troubleshooting time Comply with insurance company requirements Check for defective equipment while still under manufacturer warranty

$Refractory insulation 218,2 C$ $refractory insulation causing a$

22 Refractory insulation 218,2 C ,9 C Worn refractory insulation causing a hot spot on the outside of a trident duct

23 Pipe sediment Sediment in a pipe creates a cold spot.

24 Tank sediment Sediment in a tank shows up as cool area at the bottom

25 Insulation defects Ice formation in urethane insulation on ammonia tank (-33 C inside)

26 Tank levels 32,6 C ,6 C 15 Indicating the fluid level in a storage tank

27 Process monitoring Rotary kiln in cement industry. Real Time system would be better than a monthly PM.

28 81, 50, Electric motor bearing Overheated motor bearing. Over 80 C on bearing housing.

29 81,8 22,5 Pump bearing Pump bearing in need of maintenance.

Conveyor belts *>141.2 F 140.0 130.0 120.0 110.0 100.0 90.0 80.

30 Conveyor belts *>141.2 F Hot Spot *>133.3 F *<63.7 F *<30.5 F Conveyor belts have thousands of bearings that are sometimes difficult to get close to.