Turner Access Total Access
Heightec Higher Safety

‘EXPLODING CONCRETE’ INCIDENT

Hyrogen generated from use of incinerator bottom ash suspected
   

Barhale has issued a Safety Alert concerning the use of foam concrete containing incinerator bottom ash (IBA) on their projects following an explosion. 

The alert suggests the foam concrete was placed into a dry well extending beneath a metal floor. It is believed that hydrogen generated built up beneath the floor and that the gas/air mixture was ignited by sparks from a grinder used the following morning.

HSE is investigating the incident.

Comment: This short video gives a good account of foam concrete.

First principles suggest that where hyrogen can be generated from a product the user assessment should consider: (a) avoiding the risk by subsitution with non-hydrogen generating substances (b) avoiding confined spaces (c) effective ventilation and (d) avoidance of work producing ignition sources, unless the area has been certified gas free.

Turner Access Total Access
Heightec Higher Safety

One Response to “‘EXPLODING CONCRETE’ INCIDENT”

  1. CONCRETE EXPLOSION HSE POSITION | PP Construction Safety News Desk Says:

    [...] The explosion in August 2009 injured two workmen after a pit had been filled with foamed concrete. Whilst the concrete was setting work started with angle grinders and the explosion occurred. [...]