ecchelmet
Safety Corner
Transit mixer hits a road barrier
Scenario
A transit mixer, transferring concrete from a batching plant to a site location, hit a road side barrier and toppled into a pond.
What was the cause?
- Lack of visibility on the road bend
- Less reaction time to control the vehicle due to foggy conditions.
- No adequate provision to alert the driver.
What precautions need to be taken to prevent a recurrence?
- Installation of speed barriers, speed humps, caution signages.
- Adverse weather driving training to be provided.
Toppling of a crane during a lift
Scenario
A 40t telescopic crane was in the process of lifting pier tables during some de-shuttering work. When lowering the shutter, the crane’s rear outrigger on the right side started to settle into the soil and with the wooden sleepers getting embedded, the outrigger jack slipped from the sleeper into the soil. Subsequently, with the front outrigger jack getting into the PCC layer, the crane toppled over. The boom of the crane came to rest on the C- frame that is connected to the shutter that tilted the crane. Fortunately, there was no injury or loss of property.
What was the cause?
- Lack of ground stability.
- Outriggers not positioned on a firm base.
What precautions need to be taken to prevent a recurrence?
- It is imperative to create a stable base during such operations.
- Special care should be taken if it has rained to ascertain a firm footing to position the outrigger.
