Thermal Imaging Case Study - Ship Survey (Steering Gear Compartment)
The Maritime and Coastguard Agency implements the government's maritime safety policy in the UK and works to prevent the loss of life on the coast and at sea.
Part 7 of the Merchant Shipping Notice No M1672 states that casualty investigations show that insufficient attention is paid to ensuring that connections and securing devices are tight, and that Shipowners should check connections at regular intervals so that any wear or other deterioration which could lead to loose parts, overheating or disintegration, is detected and corrected before any serious consequences arise.
Where connections cannot be checked, e.g. because of the need to maintain supplies to essential services, shipowners and surveyors are recommended to consider the use of thermographic imaging equipment to detect poor connections by means of generated heat.
The images below show early indications of a loose/bad connection on the steering gear panel on a commercial vessel. Obviously, if left unattended this connection could fail with the resulting loss of the steering gear. If this happened in adverse weather conditions, the ship and its crew would be put in great danger.
TEVA carry out Thermographic Surveys on commercial and private passenger carrying vessels on a 12-monthly cycle to help ensure the integrity of ships electrical and mechanical systems.
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Last Updated on Wednesday, 04 May 2011 14:56 |
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Case Study Motor Connection |
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Thermal Imaging Case Study - Critical Pump onboard a Ship
The importance of thermally scanning the motor connection cable when carrying out a thermographic survey is evident on this example. A vertically mounted critical motor and pump onboard a ship. A distinct thermal pattern can be seen on the supply cable. The temperature was measured at 46°C.
The motor was shut down, isolated and connection box opened. The cable connections were scanned whilst the motor had been shutdown for several minutes. This time the temperature measured was at least 239ºC!
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Last Updated on Wednesday, 04 May 2011 14:35 |
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Example Thermal Imaging Report |
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Last Updated on Friday, 24 June 2011 13:37 |
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Infrared Building Surveys |
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TEVA use the latest high resolution FLIR thermal imaging cameras to highlight building insulation properties. Combine that with thousands of hours of thermal imaging experience and you have found one of the best thermal imaging companies in the UK.
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| As we are all aware energy costs have dramatically increased over the years, and we are becoming more aware of heat loss in buildings, be it domestic or commercial. The example below shows the loss of heat through a single glazed window on the top floor compared to a double glazed unit on the floor below |
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| The use of cavity wall insulation can also reduce the amount of heat loss through the brickwork. This can be seen on this new house extension compared to the original house wall which has no insulation fitted. |
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TEVA are able to perform professional infrared surveys on your building to identify areas of potential heat loss. Other benefits from our surveys are;
- locate under floor heat pipework
- highlight roofing defects and areas of missing insulation
- check new windows have been fitted properly
- highlight areas of moisture ingress on flat roofs
- locate studs and blocked windows
- track internal guttering and leaks
- real time display of heat loss in your dwelling
TEVA offer a range of surveys that suit both domestic and commercial properties.
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Last Updated on Saturday, 29 January 2011 12:25 |
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Thermal Imaging is one of the easiest ways to start a condition monitoring program. It is non-intrusive and the results are instant. TEVA are performing thermal imaging surveys on a daily basis, year in, year out. Over the past three years we have logged over 2,000 hours of infrared surveying.
TEVA have two state of the art FLIR cameras and three Certified Thermographers(Level 1 and 2). The latest camera is a FLIR P620, with 640x480 resolution. This enables us to provide our customers with fast data capture and high resolution images.
Service Summary
- Thermographers qualified to Level 2 ASNT equivalent standards.
- State of the art thermal imaging equipment ensuring fast and efficient surveys.
- Thermographers are able to perform a full data capture with tablet computers.
- Quick report delivery and multiple report formats. Typical report delivery within 2-3 days.
- Typical Report includes:
- Overview
- Cost Benefit Analysis
- Documentation of Faults
- Work Orders for Reported Faults
- Benchmark/Baseline Trending
- List of All Surveyed Items
| Fuse Example |
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| This is a classic example of a connection problem on a single phase fuse. The energy is being generated around the bottom connection on the fuse and conducting down through the cable. The fuse needs to be removed and all associated connections cleaned and retightened. |
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| Contactor Example |
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| Loose or poor connections are common on electrical contactors because of the continuous energising and de-energising of the circuit .In this example the loose or poor connection can clearly be seen. On closer examination it is noted that a further problem is developing on the top right hand connection. |
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| Motor Example |
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| Motors run at different temperatures dependent on the load they are being subjected to and the amount of cooling they receive from the cooling fan .This image shows a motor that has limited cooling but is also being subjected to higher than normal loading. Constant running at high temperatures will dramatically decrease the component life of the motor. The increase in load on this motor was due to a change in production procedures. |
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Last Updated on Friday, 18 February 2011 16:23 |
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Thermal Imaging
