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Dropped Object: 1.3 pound link pin fell 40 feet
Country: USA - North America
Location: OFFSHORE : Mobile Drilling Unit
Incident Date: 14 November 2013 Time: 22:00
Type of Activity: Unspecified - other
Cause: Struck by
A drilling contractor was tripping pipe out of the hole and a link pin came loose from the hook, falling 40 feet (12.2 metres) to the deck below. The pin bounced and struck a glancing blow to the left jaw/neck area of a worker. The link pin is 1 inch by
5 inches (2.5cm x 12.7cm) and weighs 1.3 pounds (0.6 kg).
What Went Wrong?:
The type of keeper pin used on the dropped object did not adequately secure the pin. The link pin is threaded and uses a cotter pin to prevent the pin body from backing out. The pin was secured with a coil "diaper pin" instead of a cotter pin.
Corrective Actions and Recommendations:
Safety Alert number: 271
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