Incident alert

LOCATION:
QUARRY
ACTIVITY:
TRANSPORT / DELIVERY
SUB ACTIVITY:
MOBILE PLANT
ALERT STATUS:
Normal
DATE ISSUED:
10/06/2008
INCIDENT No:
00169

TITLE
Drill Rig Dust collector Collapse
COUNTRY OF ORIGIN
United Kingdom
ACCIDENT / INCIDENT DETAILS
The Halco 35t drill rig was travelling on a quarry haul road to a new drilling site, when the dust collection box fitted to the side of the rig collapsed away from the machine coming to rest on the tracks. This caused damage to the surrounding catwalk and bent some of the supports.
On investigation after the box had safely been removed it was noted that on the left-hand support plate the four securing bolts had been sheared off for some time. If someone had been in the vicinity of the dust extractor at the time this incident could have been very serious. The sheared bolts are positioned in an awkward position, and would not be easily visible on routine checks.

ACTION
New steel securing plates have been ordered with an increase in bolt size, with an additional angle support fitted below the main brackets. This issue is to be discussed at a safety meeting booked for 17/3/08.
ACCIDENT / INCIDENT IMAGES
Click image to enlarge

Drill rig bolts sheared
Click image to enlarge

Damage to catwalk
LEARNING POINTS / ACTIONS TAKEN
The machine should be removed from the quarry face area to the workshop on a monthly basis, then steam cleaned off so the fitter can undertake checks on hard-to-reach areas.

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LEARNING POINTS / ACTIONS IMAGES




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