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Dropped Objects Update January to March 2011. Donald Dobson Health & Safety Executive Offshore Division. Dropped objects – quarterly totals. 2011 January to March - All Incidents. Derrick & Well Ops Incidents. Derrick & Well Ops Incidents.
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Dropped Objects Update January to March 2011 Donald Dobson Health & Safety Executive Offshore Division
Derrick & Well Ops Incidents • Lifting diverter through rotary, overshot + extension (4.5 MT) detached and fell 50ft to jacket deck • Cover for top drive junction box (5kg) detached during jarring & fell 70ft to rig floor – sheared bolts • Lifting out annular packer (680 kg) from LMRP it struck an anode and fell 9m to deck • Sledge hammer fell 40ft to rig floor; ring on end of tool lanyard failed • Picking up wire-line valve (130kg) to run into well, it detached from running tool & fell 4.3m to rig floor
Crane & Lifting Operations • Wooden sheathing from crane boom rest dislodged & fell to off-load hose walkway • Lifting valve from WI filter package, actuator detached and fell 30” to grating below (corrode bolts)
Other Dropped Objects • Two lengths of redundant deluge pipe-work (7kg & 2kg) detached and fell 6m to walkway • Emergency beacon (10kg) detached from bracket, falling 2.5m to extent of electric cable • Hammer head (1.8kg) detached and fell 13m during rope access work on crane boom • Valve being manoeuvred struck second valve which slipped under handrail & fell into sea