D20x22 Series II Navigator HDD
Overview 30-17
L
OCKOUT
P
ROCEDURE
- W
ITHOUT
R
EMOTE
L
OCKOUT
S
YSTEM
It is essential that the machine is locked out before entering an exit pit, changing tools, repairing drill rod,
manually adding or removing drill rod, or performing any other work on the drill string or tools.
Step 1:
Shut off machine and remove key.
Step 2:
Bring key to the exit location where work will be performed on drill string or cutting tools. The key
must remain at this location until startup is permitted.
Resuming Operation after Lockout
Step 1:
Verify that drill string and cutting tools are ready for operation.
Step 2:
Confirm everyone has evacuated the exit pit and is away from drill string and cutting tools, and that
no wrenches, tongs, or breakout devices are attached to drill string or cutting tools.
Step 3:
Warn everyone who may be exposed to the drill string or cutting tools that operation will resume.
Step 4:
Return key to the machine.
Step 5:
Follow “Radio Communication Requirements” before startup. Refer to
DANGER:
Rotating drill string can kill. Unexpected startup possible.
Lock out before working on drill string.
