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BSEE issues the investigation report for the Dec 2017 fatality on the Petrobras 10k drillship

Rig Lynx
  • By Rig Lynx
  • Feb 15, 2019
  • Category : Archives
  • Views : 1033

On December 2, 2017, an incident resulting in a single fatality occurred during pipe handling operations onboard the Petrobras 10000 Drillship (PBS 10k). Petrobras Internacional Braspetro B.V. (PIB-BV) was the majority owner of the PBS 10k. Petrobras Americas International (PAI), a subsidiary of PIB-BV, contracted Transocean Offshore Deepwater Drilling, Inc. (TODDI) to manage the PBS 10k during the time of the incident occurring on December 2, 2017.

The PBS 10k was located approximately 240 miles southwest of New Orleans, Louisiana, in the Walker Ridge Area (WR), Block 469 in the Gulf of Mexico (GOM). The drillship was positioned in a safe zone in WR Block 469 (WR 469) while repairs were being performed on the Subsea Blowout Preventer (SBOP) system. The drillship was not connected to the seafloor, as the subject repairs were being performed prior to initiating future wellbore operations. While the SBOP repair work was being performed, the drill crew proactively performed offline operations to prepare for future well work. This included picking up and racking back drill pipe (DP) on the auxiliary drill floor. At approximately 4:40 a.m., a floorhand sustained fatal injuries when he was pinned between the Pipe Handling Catwalk Machine’s (PHCM) skate loading platform arm and a stanchion post on the auxiliary drill floor. The incident occurred near the end of a 12-hour shift on the first day back to the drillship after the crew had been off for 21 days.

The PHCM utilized a skate (which moved along on a track) to transfer DP from the catwalk to the auxiliary well center. The skate’s design included loading platform arms that extruded from the body of the skate and were engineered to support tubulars, such as DP. The stanchion post was located on the port side of the skate from which there was approximately a three-inch clearance between the post and the skate’s loading platform arms when aligned in the position it was in at the time of the incident.

At the time of the incident, the top drive and PHCM were simultaneously being used to pick up the DP. The victim and another floorhand were in a location away from the auxiliary well center, close to the stanchion post. The elevators were latched to the box end of the DP near the auxiliary well center and the driller had begun raising the DP with the top drive. At this point, the victim was facing away from the equipment being used and pulling on a cable anchored to the stanchion post in the yellow zone on the port side of the skate, seemingly stretching. While the driller lifted the DP, the skate operator used a remote control to retract the skate away from the auxiliary well center. When the loading platform arm passed by the post, it pinned the victim into the approximate three-inch clearance. The skate operator observed the victim pinned, and reversed the skate back toward the well center, releasing the victim from between the loading platform arm and the post. The victim fell to the floor.

Personnel quickly responded to the incident and contacted the onsite medic, who responded to the drill floor. The victim was transferred to the medic’s office, where he received treatment while the emergency Search and Rescue (SAR) helicopter traveled toward the drillship. The victim was pronounced dead shortly after arrival of the SAR provider.

The Bureau of Safety and Environmental Enforcement (BSEE) conducted a Panel Investigation into the victim’s death and the causal factors that led to the incident. The panel consisted of professionals from both BSEE and the U.S. Coast Guard (USCG).

The panel traveled to the PBS 10k drillship, conducted interviews and reviewed documents. Based on the investigation, the panel concluded that the fatal incident was the result of the victim being located in a pinch point area when the skate was moving away from well center and being pinned between the stanchion post and skate’s loading platform arm.

Full Report Available Here

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