| Safe deployment of lab sampling platform |
| Aggregate Industries at Peterborough Coated plant has a 'drawbridge' type lateral extension to an access gantry, to permit access for testing and sample taking. It was recognised that the tipper driver might possibly pull away unaware that the drawbridge was down and that the laboratory technician was testing the load. As a consequence, an automatic system has been installed whereby deployment of the drawbridge causes a barrier to be lowered in front of the tipper, a traffic light to show red and an audible alarm to sound. |