Site staff at the Rand Asphalt Plant were concerned about the way in which the sampling of filler was carried out from either the top of the silo or from the top of the tanker.
It was suggested that sampling could be carried out when loading tankers by the addition of a simple lockable chute to the inspection hatch of the screw conveyor.
A simple valve and chute were fabricated which have minimised the need for working at heights and the risk of dust being discharged into the air. |