Download
1 / 19
190 likes | 375 Views
GLNG Incidents / Lessons Learnt CSG Safety Forum. John Sargaison 14 August 2009. Recordable Injuries - YTD. *. Recordable Injuries - TRCFR. *. A direct recordable injury is where GLNG has accountability for the safety of the activity being conducted when the injury occurred.
E N D
GLNG Incidents / Lessons LearntCSG Safety Forum John Sargaison 14 August 2009
Recordable Injuries - TRCFR * A direct recordable injury is where GLNG has accountability for the safety of the activity being conducted when the injury occurred. GLNG Project recordable injury includes injuries where either GLNG or another Business Unit/Department has accountabilityfor the safety of that activity (ie indirect plus direct recordable injuries).
LTI – Dropped Drill Collar IMS #38751 EWG Rig 102 – Coxon Creek 8 11 February 2009
Overview In preparation for spud, a 5-1/2” drill collar was picked up using the rig’s pipe handling system. The drill collar was latched in the elevators and raised to a near vertical position. When the drill collar was at the near vertical position, the collar slipped through the elevators. The drill collar subsequently landed on the rig’s pipe handling system before bouncing off and landing on the ground/rig floor. A Floorhand received a glancing blow to the lower back while exiting the rig floor by the drill collar as it landed on the rig floor.
Summary of Events • At 08:00 on 11 February 2009 the Assistant Driller asked the Mud Tester to gather all of the required equipment for spud. This included the manual 5-1/2” Drill Collar Elevators. • Manual Elevators were to be used due to a broken valve on the hydraulic elevators; The Rig Manager was waiting on confirmation that the hydraulic elevators could be used with the broken valve • The Mud Tester attached a sling to the 5-1/2” casing elevators and placed them at the front of the parts container. The Forklift Operator transferred the elevators to the V-Door. • At 10:00 the drill bit and bit sub were raised to the floor, along with the casing elevators. • The elevators were fitted to the bails by the Driller, Leasehand and Assistant Driller. • The drill bit and bit sub were made up. The drill collar was then raised to the floor by the pipe handler. The IP latched the casing elevators to the drill collar. • The drill collar was picked up in the elevators. As the drill collar neared the vertical position, the Driller noticed the collar slipping out of the elevators and raised the alarm. • The drill collar fell back to the pipe handler, bounced and fell to the ground and rig floor. • The IP received a glancing blow to the lower back while exiting the rig floor by the drill collar as it landed on the rig floor. The incorrect elevators were selected for the operation.
Overview 5-1/2” DC Elevators Markings 5-1/2” Casing Elevators Markings
Overview Final Position of 5-1/2” Drill Collar
Corrective Actions Elevator Colour Coding 5-1/2” Casing Elevators Tagged Out
High Potential (HiPo) Incident Summary • Task - reassembling BOP • Suspended load lowered into place and sling was slack • IP considered that the load was no longer suspended • IP moved under the jib and commenced to tighten securing bolts • Loader operator gets air hose to clean out loader cab • Air hose catches on jib control lever causing it to lower Re-enactment of IP under jib
LTI – Back Injury IMS #42241 Atlas Rig 1 – Fv122_OB1 13:25 16 May 2009
Overview Maintenance was being carried out on the BOP during rig move. While replacing the kill line valve, the IP positioned himself under the loader jib. Coincidental with this, the loader operator pulled a compressed air line through the window of the loader to clean the cab. The air line made contact with the loader controls causing the loader jib to descend. The loader jib stopped when it made contact with the valve it was previously suspending. The loader jib pinned the IP in the crouched position causing two fractured vertebrae. The IP was evacuated to Injune hospital for medical treatment and later to Toowoomba for precautionary MRI scan.
Summary of Events • At 13:00hrs the work party commenced re-assembly of the kill line valve block back onto the BOP. The kill line valve block was manoeuvred into position a using loader stinger jib and soft sling. • With correct alignment achieved, the flange was fitted onto the studs. Under direction, the loader jib was lowered slightly causing the sling to slacken, indicating weight of the valve block was now being fully taken by BOP studs. Derrickman and Floorman commenced tightening nuts onto flange. • Loader Operator steped out of loader to grab compressed air line to “blow” clean loader cab. Operator routed hose through cab window with hose passing close to jib control levers. • Loader Operator climbed back into cab and commenced cleaning the loader cab. • Derrickman positioned himself under the loader jib to tighten nuts onto the valve block flange. • At 13:24hrs, the Floorman noticed the loader jib descending at approximately 150mm/sec. The Floorman attempted to get attention of Loader Operator to alert him. • IP becomes pinned in the crouched position beneath loader jib and BOP stump skid. The end of the jib contacts the valve block flange surface preventing further downwards travel. • IP evacuated from site. IP sustained two fractured vertebrae.
Overview Photo showing air hose path through cab RHS window and across control levers Re-enactment if IP’s position under jib.
Overview • Step-back conducted before operation • Loader Operator (Driller) hadForklift Licence and ~25 yearsloader experience • Crew did not consider loaderjib as a suspended load
