IADC/09-19 Offloading equipment results in high potential Near Miss
In preparation to offload a container from a flatbed truck, an employee was sent to the top of the container to connect the lifting slings. Shortly after this procedure started, instruction was given to the truck driver to backup a short distance to move closer (or more centered) to the crane. As the truck proceeded to back up, the man on top of the container had to go down onto one knee to prevent himself from loosing his balance or falling from the container.
IADC/09-20 Incorrect length of tong snub line results in fatality
A rig floor operation required a longer snub line so the drill crew changed out the snub line on the make-up tong for longer tong snub line. The floormen retrieved the old break-out tong snub line that was being utilized as a rig floor sling and installed it on the make-up tong. When the operation was completed, the drill crew did not replace the longer snub line with the standard length one. Two days later when the drill crew was making up a bit onto a bit sub the driller engaged the rotary into reverse to back the bit into the sub.This caused the make-up tong to rotate around 180 degrees from the anchor post, instead of stopping at 90degrees. This resulted in the floorman manning the make up tong to become trapped between the tong and the extended snub line suffering fatal injuries.
IADC/09-21 Slip & Trip results in MTO
A company Team Leader was visiting the project site.After viewing the Texas Deck in the fabrication area,the injured person (IP) was stepping off of the raised support that the structure was sitting on and was attempting to step on the flange of a large beam laying on its side about two feet (0.61 meters) away. His footing slipped and he fell onto the beam, face down, landing on both flanges. His left arm/wrist/hand struck one flange while his left thigh struck the other flange. In addition, it knocked the wind out of him.Other than some obvious soreness, there was no indication of injury. A couple of hours later there was some swelling and redness near the knuckle of the left index finger and a trip to the clinic was made,whereby an ice-pack and tensor bandage was applied. Upon arriving home his wrist was still tender, so he made a visit to the doctor and it was discovered that he had received a minor fracture to a bone in his wrist.
IADC/09-22 Air winch mounting bolts failure
While running the BOP stack the air winch was pulled from its foundation. The air winch came to rest on the handrails overlooking the Moonpool, which is approximately 4feet in front of the air winch’s original location.There were no injuries associated with this incident.
IADC/09-23 Lifeboat incident results in a Fatality
Offshore rigs or Mobile Offshore Drilling Units (MODU) are normally outfitted with lifeboats as a means of emergency evacuation. Since the lifeboats are lifesaving equipment, they must be maintained in a “ready to go” condition AT ALL TIMES. Regular drills along with and testing of lifeboats & equipment is generally required by regulation and has been the industry-accepted means of assuring readiness of the lifeboats.Accident statistics indicate that most accidents involving lifeboats occur during drills and other maintenance activities.
IADC/09-24 Tripping operation results in a High-Potential Near Miss
After the derrick man unlatched the elevators to rack back a stand of drill pipe, the driller started to lower the top drive system down before ensuring that the drill pipe had cleared the top drive. The back-up wrench caught the edge of the box of the top joint of drill pipe, causing the drill pipe to slightly bow and spring forward. It was determined that one of the elevator link tilt adjustments on the top drive had slipped to a position which made it difficult for the derrickman to open the elevators as the arms did not move past the back-up wrench under normal operations. No injury or damage resulted.
IADC/09-25 High potential incident - dropped light
A 23 lb spotlight fell 90 feet (27.5 m) from a crane boom to the rig deck. The operation at the time was slewing the bow crane to over the chemical hatch from its stowed position at the forward leg. Having visually confirmed that the hook would not catch on any equipment on the radio room roof, the crane operator started to slew the crane toward the accommodation. As he did so the light fell to the deck beside the blue container pictured below. It then bounced and struck the wall of the radio room before coming to rest in the position shown. No one was in the area at the time of the incident.
IADC/09-26 Lifting operation results in arm injury (LTI)
After nippling up the BOP stack the crew was installing the flow line from the shale shaker. The assistant driller (IP)was standing above annular preventer trying to connect the flow line’s dresser sleeve with the bell nipple. He was holding the dresser sleeve with his left arm. The flow line was being lifted by the carrier hydraulic hoist, which created a blind lift. When he requested that the flow line be lowered a little, the night pusher ordered a new floor man to operate the carrier’s hydraulic hoist instead of asking the driller to operate it. The new floor man operated the hydraulic hoist excessively upwards,which squeezed the assistant driller’s left arm between the dresser sleeve and the beam located above the sleeve, causing a compound fracture to his arm.
IADC/09-27 Laying out drill pipe results in broken finger (LTI)
The rig crew was lowering 5'' drill pipe from the rig floor down to the catwalk using the air winch through the V-door. A floor man (IP) was assigned to work near the catwalk to take off the lifting cap from the drill pipe. He was instructed to put another nipple under the drill pipe while it was lowered onto the catwalk and before it was laid down on the catwalk.This was to make it easier to slide the drill pipe.After the drill pipe had been laid on the catwalk, the IP started to take off the lifting cap, which was still connected to the air hoist line. The drill pipe tilted toward the IP’s right hand and fractured his thumb.
IADC/09-28 Near Miss – damaged man-riding winch
The drilling crew was running 18 5/8” casing. While preparing for a personnel hoisting operation a floorman was checking out the man-riding winch when he noticed that it was not working properly. A test was conducted by the mechanic who discovered that the winch drum did not rotate with the control lever in the lower personnel position. The man-riding winch was immediately removed from the rig floor to repair and replace damaged mechanical parts.
IADC/09-29 Improper use of drill pipe spinner results in an MTO
A powered drill pipe spinner and chain tong were being used to make a connection of 5” DP in the mouse hole. The drilling crew placed the drill pipe spinner on the lower joint of 5” drill pipe and a back up chain tong on upper joint and got ready to make up the connection. When an employee inadvertently energized the spinner, the other employee, who was holding the backup chain tong, lost his grip on the chain tong allowing it to swing toward the power spinner operator, hitting him on the left ear and temporal region.
IADC/09-30 MTO - struck by tongs
The drill crew had made up a joint of 6-5/8” drill pipe. They then attempted to torque the connection using the bottom tong to apply the torque and the top tong was used for backup. The bottom tong was placed improperly and was biting on the hard banding. At about5,000-ft. lbs. of torque,the bottom tong broke loose from its bite and struck the employee on his left thigh. This resulted in a medical treatment case.
IADC/09-32 Dropped slip dies results in broken hand
While running a dual string of 5” and 2-3/8” tubing using air slips, the slips did not set properly when slacking off of the tubing. This caused two of the setscrews that hold the slip dies in place, to shear off. After the tubing was picked up the slips opened and the die came out of the slips and fell through the rotary into the moon pool, striking an employee on the hand.
IADC/09-33 Picking up drill collars results in LTI
While picking up 6 ½” drill collars two 3” X 12” X 36” planks were placed on the catwalk to facilitate removal of the crane slings. When the rig floor hoist picked up the box end, the pin end of the drill collar was resting on a piece of wood (3” high) which made the drill collar ½” higher than the 2 ½ inch angle iron rail edge of the catwalk. As the box end of the collar was being pulled up the beaver slide (pipe/tool slide) to the rig floor, the pin end of the drill collar rolled off the board and over the angle iron then off the cat walk. The drill collar struck the roustabout from behind breaking his arm. The injured roustabout had turned his back to the drill collar and was preparing to connect the crane slings onto another collar on the pipe rack.
IADC/09-34 Fire starts from falling slag
A Permit to Work (PTW) had been completed and JSA reviewed.There was no fire blanket available so four (4) steel plates were used in an attempt to close the gap between the conductor pipe and the rotary table. A fire watch was stationed on each side of the pipe to spray water and cool the slag as the welders cut off the padeyes, but there was no fire watch in the moon pool area. Ten minutes after the job was completed, fire was spotted on the starboard moon pool walkway. Slag had fallen through the table and was deflected about 6 meters (18 feet) onto a pile of plastic cable guards left against the bulkhead. The plastic ignited but was quickly extinguished when the fire was discovered.
IADC/09-35 Dropped Stands of drill pipe results in incidents
While the rig crew was tripping drill pipe into the hole the derrickman missed latching a stand of 3½” drill pipe and it was dropped across the derrick. In an effort to return the stand to the derrick man, the floor crew used the driller’s side rig floor winch. They wrapped the winch’s cable around the stand, anchored it to the rig floor near the V-door opening and began to pull it back to the derrickman. As the stand was being pulled back toward the derrickman, it slid or lifted up and went out the v-door, falling to the yard below.
IADC/09-36 Dropped Generator Set
A 550 KVA generator set was being moved by a crane from a transport barge to the rig by connecting the lifting slings to the weatherizing framework. The frame pulled loose from the skid and the generator fell 15-20 feet (5 - to the deck destroying the generator set. Fortunately no one was under the load when it fell.