Electrical and Arc Flash Safety

May 27

Worker Hurt in “Manhole Explosion” Probable Arc Flash

Three primary causes for “manhole explosions” are

1. Ignition of combustible or flammable gases or dusts in the manhole

2. Arc Flash

3. A combination of the two.

By law, gases are monitored and these explosions are fairly rare. Arc flashes are more common when gases are being monitored.

This entry was posted on Thursday, May 27th, 2010 at 12:16 pm and is filed under Underground Network Incidents. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.