MCCOY KT5500 - 4.1 MAKING AND BREAKING CONNECTIONS

©2008-2017 McCoy Global
Manual № TM12012
80-0420-23 POWER TONG
Section 4
Page 4.6
Operation
4.1 MAKING AND BREAKING CONNECTIONS
Set up and prepare your equipment for operation as per Section 3 of this manual.
Your tong and backup assembly should be properly suspended, connected to a hydraulic power source, and ready to
make or break connections at this point.
4.1.1 Making A Connection
1. Ensure hydraulic power supply to the tong is energized.
2. Ensure the backing pin is in the “makeup” position. From the front of the tong, the backing pin correctly
configured for makeup will be in the 10 o’clock position. If it is not, simply lift up and place in the correct
position. The cage plate opening must be aligned with the door opening when setting the backing pin position.
3. Properly configure the load cell and snub line(s) for making up connections. The “snub line” is a length of wire
rope or chain connecting the rear of the tong body opposite to the load cell to a sturdy anchor on the drill floor
(see Page 3.19) which arrests unanticipated and uncontrolled rotation of the assembly. The load cell and
snub line(s) must be rated for the applied torque plus whatever safety margins stated by your own operating
policies. The load cell and snub line connection point(s) on the drill oor must be sturdy enough to absorb
all applied forces generated by tong rotation. When making up joints connect the load cell to the the driller’s
side of the tong, which is the left side of the tong as seen from the rear. For accurate torque measurement,
the load cell connection line must be perpendicular to the vertical, and perpendicular to the centre-line of
the tong.
4. Use the rig’s pipe-handling equipment to position the fresh tubular in position over the stump. Where possible,
manually engage the connection, and ensure the connection is not cross-threaded.
5. Open the tong door.
6. Lift the tool from the drill floor and adjust the height of the tool as necessary. Position the tool over the
connection.
NOTICE
THESE OPERATING PROCEDURES ASSUME THE USER HAS PROPERLY SET UP AND PREPARED
THE EQUIPMENT FOR OPERATION AS PER SECTION 3 OF THIS MANUAL.
7. Close the tong door. Ensure the door latch has properly and securely engaged.
8. Shift the tong to high gear to thread the connection at high speed. Do not shift gears while the tong is rotating.
!
WARNING
SHIFTING TONG WHILE ROTATING THE MOTOR AND CAGE PLATE MAY RESULT IN CATASTROPHIC
GEAR TRAIN FAILURE.
!
CAUTION
RIG PERSONNEL MUST STABILIZE THE TOOL AS IT IS LIFTED FROM THE DRILL FLOOR.
9. Rotate the tong in the make-up direction to cam the jaws on to the tubular.
10. As the joint becomes fully made up the increasing torque demand will stall the motor, and displayed torque
will rapidly begin to increase.
11. Stop rotation, and shift to low gear (low speed/high torque). This will enable the tong to produce adequate
torque for making up the joint to specification. Do not shift gears while the tong is rotating.
!
WARNING
SHIFTING TONG WHILE ROTATING THE MOTOR AND CAGE PLATE MAY RESULT IN CATASTROPHIC
GEAR TRAIN FAILURE.