IADC/12-17 Sudden slewing of crane boom dislodges load
The crane operator slewed the crane right, causing the pennant to swing. He immediately attempted to correct the pennant line swing by slewing left. This action caused the pennant to double back on itself which resulted in the pennant becoming detached from the main hook. These actions resulted in a high potential serious injury incident.
IADC/12-18 Loose machine guarding results in minor injury
While working in the shaker house, an employee stepped onto a grating that was covering an auger. The grating gave way and fell onto the auger, which was rotating at the time of the incident. The employee’s foot did not make contact with the auger and the emergency stop was immediately activated. The employee sustained a slight bruising to his heel. This incident had the potential for serious injury had the person’s foot come in contact with the auger.
IADC/12-19 Deep Vein Thrombosis (DVT)
Upon returning home from an international trip, an employee was hospitalized for Deep Vein Thrombosis(DVT). He was admitted for approximately one week and was prescribed preventative medications for several months.When other employees within the company were notified, via an internal alert, of the risks of DVT, additional employees within the organization also reported that they, or those they work with,have also experienced DVT during the past year.
IADC/12-20 Helideck obstruction hazard; marking and notification
A recent fatal helicopter crash has highlighted the need for effective coordination of information between offshore facility operators and aviation service providers (ASPs)regarding helideck obstructions and closures.
As with most incidents, there were multiple barriers which, had any one of them been effectively managed and in place,could have prevented the incident. One such barrier, which is under the control of the management of the offshore facility, is the effective identification of possible obstructions to the helideck, declaring the helideck closed, properly marking its closure, and notifying aviation service providers of the helideck’s closure.In this incident the pilot attempted to land on the helideck of a platform that was not marked as closed, even though it was apparently obstructed by a jackup that was working over the platform.It is not known why the pilot attempted to land on the platform’s helideck instead of that of the MODU, or that the pilot did not identify that the flight path was obstructed, even without the helideck being marked as closed. After the incident, the platform’s management did mark the helideck as closed.
IADC/12-21 Lack of communication results in multiple injuries
The crew was in the process of laying down drill pipe. A joint was pulled out of the hole, the slips were set, the tongs were attached to the top and bottom of the tool joint and the connection was broken. The bottom set of tongs were removed and the Driller engaged the rotary to spin out the connection. The breakout tongs were left on the upper joint to keep the blocks from rotating and tangling the lines. As the rotary engaged, the crew did not notice that the breakout tongs slid down below the tool joint to the pipe in the rotary. The break-out tong hand made the tongs bite, as he had prior, thinking that they were on the top joint. At the same time, the injured employee reached into the Red Zone to grab the tail rope on the back handle of the tongs to help pull the tong around. As he reached in, the tongs bit on the pipe in the rotary and swung around striking the employee in the chest knocking him back into the laydown post which was in the mouse hole. He then fell forward, landing face first on the floor. The employee sustained multiple injuries. Quick responses by the crew, and the medical team upon their arrival to the site prevented more serious complications.
IADC/12-22 Falling steel plate results in stuck-by incident
The crew was in the process of rigging down their rig. After lowering the draw works section approximately 8 feet (2.4m), the crew began work on removing the driller side walking foot in preparation to lower the derrick. While removing the driller side walking foot, a small (2 feet x 2.5 feet / 61cm x 76cm) , steel, floor plate located on the skid at the off-driller side of the draw work fell approximately 12 feet (3.7m) below the drill floor. The steel plate bounced off the sub-structure and then struck an employee, who was working approximately 6 feet (2m) away from the substructure area. At the time of the incident, the employee was performing other duties and was not involved in the task of removing the walking foot.
IADC/12-23 Exploding ball valve results in near miss
The rig welder was instructed to cut a mild steel hose fitting from a 4 inch (10cm) brass ball valve. Working at his bench with a hot work permit, the welder used an oxy-acetylene torch to cut the mild steel fitting close to the threaded end of the valve. Having finished the job the welder turned to put his torch away. At this time an extremely loud explosion took place and a short threaded section of the valve closest to the cut fitting blew across the lease, hit the ground, making a small crater approximately 26 feet (8m) away from the bench. The threaded section bounced and flew another 39 feet (12m), hitting and denting a steel cargo container.
IADC/12-24 Misuse of high pressure cleaner results in injury
The injured person (IP) was assisting the Night Mechanic in attempting to clear the cellar pump suction line which is used to empty the cellar. The IP, who was a short-service employee with only three (3) days on the rig, held the hose while the Night Mechanic used the high pressure wash down gun inside the hose. When the Night Mechanic activated the gun, the high pressure spray from the gun took him by surprise. The high pressure wash down gun kicked up and the nozzle swiped the IP across his face from his chin to his right ear.
IADC/12-25 Snagged hoist line results in fractured vertebrae
During cementing operations while utilizing the hoist line on the rig, a floor hand was being hoisted up the mast to tighten the manifold for the cement head. The crew decided to use a 20 foot (6m) extension chain, which was connected to the hoist line, in an attempt to keep the swivel connection above the hoisted employees head while working at any given height. While the floor hand was being hoisted, the swivel connection got caught under the casing stabbing basket on the driller’s side. Neither the floor hand nor the employee running the hoist noticed the swivel had snagged. Not realizing that the swivel was snagged,which put extreme tension on the lifting cable, the employee running the hoist continued lifting the floor hand to the required height. Once the swivel connection was pulled out from under the stabbing basket, the floor hand was thrown upward and then dropped approximately 3 feet (91cm) to the end of the slack in the hoist line. After the floor hand dropped to the end of the slack, it caused the hoisting cable to jerk him resulting in a compression fracture to his spine.
IADC/12-26 Gloved hand caught in pipe spinner results in injury
The crew was utilizing a lay down machine to pick up 4” (10cm) drill pipe. During this operation, the floor man was assisting the crew by pulling the pipe spinners onto the joint of drill pipe. As he pulled the spinner toward the drill pipe with his left hand, he placed his right hand onto the joint of drill pipe to get more leverage. As the pipe spinners were latched onto the joint of drill pipe and engaged, his right hand glove became entangled in the pipe spinner chain. His right hand was pulled into the jaws of the pipe spinner resulting in multiple fractures to his right middle finger. Quick actions by the crew prevented this incident from being more serious.
IADC/12-27 Hidden welding lead results in minor electrical shock
Two scaffold builders were assembling a covered scaffold inside a boiler while concurrent welding and blasting activities were taking place. Scaffold builder “A” used his hammer to line up an angle support and unknowingly contacted a welding cable which was hidden below the scaffold post rosette. The scaffold post contacted the exposed wire which resulted in an electrical arc to travel up the post to a scaffold support brace which was being held above by scaffold builder “B”. Scaffold builder “B” received an electrical jolt from the current traveling through the brace.
IADC/12-28 Driller inattention results in dropped blocks
While tripping in the hole, the driller was washing and reaming due to a tight hole. After raising a full stand past the derrick board, the driller started to lower the stand back down when they hit a bridge causing the blocks to lay over the top drive which allowed the drill line to acquire slack above the blocks. As the blocks were falling towards the V-door the driller clutched the draw works and at the same time the bit broke through the bridge allowing the blocks and top drive to free fall and hit the end of the slack drill line. The sudden increase of weight parted the drill line 228 feet (69 meters) from the drum of the draw works. The blocks, top drive, and the drilling line fell to the rig floor.
IADC/12-29 Electrostatic Charge Results in Methanol Tank Explosion
A worker was climbing to the top of a 500 gallon (1,893 liter), polyethylene methanol storage tank to check the fluid level. When the worker reached the top of the tank, he touched the cap on the inner tank with his hand and the flammable vapor around the cap ignited resulting in an explosion and flash fire. The worker received first aid for a second degree burn to his arm.
IADC/12-30 Unstable lifting device injures crewman
The vessel was about to complete discharging and back loading at the platform. The last lift to come down was an “I” shaped spreader beam which measured approximately 8 meters (26 feet) long. The top and bottom of the beam has two lifting eyes situated at each end. The crane operator lowered and set the beam down on the lifting eyes directly against a previously loaded 20 foot (6 meter) basket. When the tension was taken off of the lifting slings, the two Able Seamen (ABs) moved towards the beam to release the slings from the hook. As soon as the slings were disconnected, both ABs focused their attention on the hook to make sure it would not hit them. At that moment, the ship made a slight rolling movement towards the starboard side and the beam flipped over, landing on top of and fracturing the left ankle of one of the AB’s.
IADC/12-31 High potential – dropped pony collar
While laying down an approximately 16 foot x10 inch (4.8m x 25cm) pony collar, weighing approximately 3400 pounds (1.5mt), the 500 ton (454mt) center-latch elevators opened inadvertently. The pony collar fell 6feet (2m) and came to rest on the pipe skate. In the process of falling, the lift cap struck the stump, but there was no visible damage to the remaining BHA. No personnel were in the area.
IADC/12-32 Inattentiveness Results in Injured Employees
The crew was laying down drill pipe with 42 joints left in the hole when they experienced a tight connection. The iron roughneck wasn’t breaking the connection as it should, so the crew began using manual tongs to break the pipe connection and spin the pipe out with the rotary table. With both tongs on the joint of pipe, the driller engaged the breakout tong to break the connection. The driller mistakenly thought the connection had broken when the tongs had slipped off of the joint.The driller engaged the rotary table which caused the breakout tong to swing all the way around striking the makeup tong.The makeup tong then struck an employee, forcing him into the drawworks, resulting in an injury. A second employee was injured when he fell over the rotary chain guard in an attempt to avoid the swinging tongs. A third employee was nearly struck in the head with the swinging tong; however, he bent over just in time for the tong to swing over the top of his head, knocking off his hard hat.