incident during lay down 8 ½” bottom hole assembly, the drilling crew picked up the 6 ½” jar
Post on 30-Dec-2015
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HSE LEARNINGS
Contact MSE511 for further information or visit HSE website LTI No 53-2010 Alert No 25 January 2011
INCIDENT
During lay down 8 ½” bottom hole assembly, the drilling crew picked up the 6 ½” Jar
from the mouse hole by using a hydraulic winch operated by Derrickman. Once the jar
was out of the mouse hole, IP guided the jar in position with his left hand to the V-door
while his right hand was holding the handrails. In the process of lowering the jar into V
door, the Jar bounced / swung and hit the IP right hand finger.
ROOT CAUSES:
• Sudden/fast movement of the winch
• Incorrect Hand position “Jar hit the IP’s right hand” finger
• Technical design constraint (winch & cathead linked in one hydraulic pump/manifold line, interdependency caused loss of control during operation),
• Inadequate hazard identification & controls
Lateral Learning• Ensure Rig Safe Operating Procedure adequately covers hazards of
interdependency during simultaneous operations • Keep away from potential pinch points.
Recommended Actions:Discuss this alert in toolbox talks and HSE meetings and
Distribute to all contractors Post on HSE notice boards Include in site HSE induction
keep away from potential pinch point.
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