Testing the Pipe Support Assembly Operation
NOTE
After completing the installation section of this instruction, the component is installed but possibly not ready to operate. A trained machine specialist must proceed with a commissioning start-up procedure to make sure that the machine system status is correct for start-up and all machine safety and functional requirements are met. Refer to the machine-specific manuals for information about machine start-up requirements.
NOTE
Make sure that the work area is clean, free of unwanted material, and tools are returned to the designated locations.
- 1.Remove tools and trash from the work area.
- 2.Remove the containers and discard the used oil in accordance with local environmental regulations.
CAUTION
Environmental Contaminant
Oil is an environmental contaminant and must be discarded correctly.
Do not let the used oil drain onto the ground.
Discard the used oil in accordance with local environmental regulations.
- 3.Inform the supervisor, lead hand, and all other persons concerned of the intent to restart the machine for testing purposes.
WARNING
Energized Machine
Can cause serious injury.
The machine must be fully energized and the engine/motor must be operating to complete this procedure.
Be careful around moving parts and pinch points.
NOTE
Make sure that all personnel and bystanders are clear of the machine before start-up.
- 4.Remove the safety locks and tags from the machine in accordance with the site-specific procedures.
NOTE
Refer to Safety Locks and Tags Minimum Requirements in the Maintenance manual.
- 5.Make sure that there is no potential for falling objects before you raise the mast.
WARNING
Energized Machine
Can cause serious injury.
The operator and the technician must be in contact at all times when they do this procedure.
- 6.Start the machine.
- 7.Raise the mast to the vertical position and lock it in place.
DANGER
Electrocution Hazard
Operating near or contacting a power line with any part of the machine can cause electrocution, causing death.
Do not raise or lower the tower or operate the machine near electric power lines.
Keep at least 3 meters (10 feet) away from power lines.
If there appears any danger of wind or other obstruction decreasing the distance, do not drill in that area.
- 8.Obey the site-specific rules and regulations for testing/commissioning.
- 9.Save the current parameters and the event log.
- 10.Do a leak check on the pipe support hydraulics.
- 11.Calibrate the rotary head.
NOTE
The drill string must be racked at this stage.
- 12.With the rotary head at the top of the mast, open and close the pipe support manually several times to release the trapped air in the pipe support hydraulics.
- 13.Make sure that the pipe support operation is smooth.
- 14.Do a visual check of the pipe support sequence and observe the sensor activation on the M5.1 screen (Figure 22).
Figure 22 - 15.Closing sequence:
The pipe support is in the open position, the jaws are open (when the proximity switch is energized the RCS shows 1 and inactive as 0).
Rod support open = 1
Rod support closed = 0
Rod support jaw closed = 0
- 16.Close the pipe support manually:
Rod support open = 0
Rod support closed = 0
Rod support jaw closed = 0
- 17.The pipe support reaches its closed position, the pipe support hydraulic pressure builds to 97 bar (1,400 psi), and the pipe support jaws start to close:
Rod support open = 0
Rod support closed = 1
Rod support jaw closed = 0
- 18.The jaws are fully closed:
Rod support open = 0
Rod support closed = 1
Rod support jaw closed = 1
- 19.Opening sequence:
The jaws are open:
Rod support open = 0
Rod support closed = 1
Rod support jaw closed = 0
- 20.The jaws reach their open position, the pipe support hydraulic pressure builds to 97 bar (1,400 psi), and the pipe support opens:
Rod support open = 0
Rod support closed = 0
Rod support jaw closed = 0
- 21.The pipe support reaches its full open position:
Rod support open = 1
Rod support closed = 0
Rod support jaw closed = 0
- 22.Move the rotary head 11 meters (35 feet) to a point above the “Head close to pipe support” interlock position. Here, it is 13 meters (41 feet) (Figure 23).
Figure 23 - 23.Close the pipe support manually and make sure that all of the overrides have been removed.
- 24.Operate the feed and lower the rotary head down the mast. Maintain visual contact with the rotary head and the pipe support to make sure that they do not collide.
NOTE
The feed stops to prevent collision. Here, it must be at 13 meters (41 feet) ± the position tolerance.
- 25.Make sure that the feed cylinder stops. Raise the rotary head to the top of the mast, and energize the auto pipe support function.
- 26.Operate the feed and lower the rotary head down the mast. Maintain visual contact with the rotary head and the pipe support to make sure that they do not collide.
- 27.Examine the auto pipe support function.
NOTE
The pipe support opens smoothly with plenty of clearance between the rotary head and the pipe support by the time the pipe support is open.
- 28.After the pipe support has opened automatically, continue to lower the rotary head past the pipe support.
- 29.Make sure that the pipe support remains open. Raise the rotary head to the top of the mast.
- 30.Examine the auto pipe support function to make sure that the pipe support operation is smooth and that it closes with plenty of clearance between the rotary head and the pipe support.
- 31.Load the drill string.
NOTE
The drill pipes must be straight and in good condition. Examine the drill pipe diameter. The clearances that are stated in this document are for new drill pipes. Make sure that the correct size pipe guides are installed.
- 32.Examine the pipe support operation by opening and closing the pipe support. Make sure that the guides do not bind on the drill pipe.
- 33.Stop the machine.