Health and Safety CONFERENCE

04-GREEN-06
Play Video

STREAM or DOWNLOAD?

Click the large image above to stream this video directly from Vimeo at the best resolution for your device.

If you need to save a copy of the video to your computer, you can click the blue DOWNLOAD VIDEO button and a copy of the video file will be downloaded to your hard drive. The file is an mp4 file in 720p HD format (suitable for projection to a large screen) and will take some time to download. Please be patient.

If you experience any problem with either option please use the CONTACT FORM to get in touch with EverTechnology for personal assistance.

Incident Investigation of Equipment in Coal Mining

Bipin Parmar
Principal Engineer, Department of Natural Resources, Mines and Energy

The potential for a gas or dust explosion, arising from misuse, failure or lack of maintenance of electrical equipment in underground coal mines is high. In order to reduce the risk of a failure, pre-overhaul audits on the Explosionprotected (Ex) certified equipment are conducted.

Occasionally Simtars is involved with investigation or inspection of equipment after a failure resulting in an incident or accident. This paper will present various methods of collecting and analysing the information/data prior to the event, the actual event and post event activities. Examples of investigation or inspection work, conducted by Simtars, will be presented.

These are:

  • Investigation of circuit breaker failure
  • Failures of electrical cable used in underground and open cut coal mines
  • Fire Resistance and Anti-Static (FRAS) compliance of non-metallic materials used in underground coal mines

Results of incident investigation conclude with recommendations for the manufacturer or for the end user. In the examples presented, the circuit breaker failure indicated a manufacturing issue. The example associated with electrical cables indicated cable insulation being compromised probably due to cable crushing (vehicle run over) or poor handling practice. The FRAS issue indicated potential hazard for static discharge when used with compressed air in underground coal mine.