Investigation Report
Worker Struck by Hammer During Wellhead-Cap Bolt Removal
09-11-2012 16:35 G01316 MP/299 RW/JT>3 Days Injury to hand/thumb
- BSEE
- Investigation Report
- Unknown
- Hand and finger injuriesLine of fire
- Well intervention
- Hand tools
- Risk assessment
- Upstream oil and gas
Summary
An investigation into a thumb injury during wellhead-cap bolt removal using hammer-wrenches. A hammer glanced off the upper wrench and struck the worker holding the lower wrench. The report identifies poor hand placement and a missed swing, records surgery and approximately four weeks of light duty, and describes newly purchased locking back-up wrenches.
Classifications: Hand and finger injuries; finger injury; hand injury.
Classifications: Line of fire; struck-by hazards.
Classifications: Well intervention; workover; well servicing.
Classifications: Hand tools; hand-held tools; handheld tools.
Classifications: Risk assessment; hazard assessment.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.