Incident alert

LOCATION:
QUARRY
ACTIVITY:
PRODUCTION AND PROCESSING
SUB ACTIVITY:
AGGREGATE PROCESSING
ALERT STATUS:
Normal
DATE ISSUED:
13/11/2009
INCIDENT No:
00241

TITLE
Conveyor Emergency Stop: Grab Wire
COUNTRY OF ORIGIN
United Kingdom
ACCIDENT / INCIDENT DETAILS
Whilst carrying out routine repair to a conveyor grab wire, the conveyor stopped after the grab wire was pulled, but when it was reset, the conveyor started running again without manual start up.

Upon examination of the remaining belts, the same problem occurred with all conveyors.
ACCIDENT / INCIDENT IMAGES
Click image to enlarge

Emergency Grab Wire


LEARNING POINTS / ACTIONS TAKEN
Legislation states that the emergency switching device should not re-energize the relevant part of the machinery.

Ensure all conveyor grab wires are checked.

Change circuits so that all motors are unable to re-energize once isolated using the emergency device.

Complete checks prior to shift beginning.

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LEARNING POINTS / ACTIONS IMAGES




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