1. DROPPED OBJECT - Chisel loosened during test Synergicase: 15499, Date: Gina Krog Hook up – W 250
Description of Incident:
The incident occurred during a test of a chisel machine in W250 module. During startup of chisel machine, the chisel loosened and bounced over the kick board and fell about 5 m. to underlying deck.
Consequence:
It was no personnel at underlying area (that was not cordoned off). The area is difficult to access. Vertical drop 5 m, fall energy 28.5 joules.
Direct causes: (what went wrong):
Chisel loosened due to weariness on the locking mechanism and defect pin.
Root causes:
Equipment shipped from the warehouse showing signs of extensive use / poor condition
Insufficient initial inspection.
Preventive measures / learning point
• When testing tools this should only be done in a suitable area
• Focus on visual check of the tool before and after work.
• If in doubt about the tool is appropriate, contact the foreman.
• Increased focus on initial inspection of equipment when arrival site .
• Review of routine equipment check before sending to different sites
Due to limited access to air, the equipment was tested in W 250
The chisel loosened from the locking mechanism.