D7x11 Series II Navigator Directional Drill Preparation 40-3
Radio Communication to Stop Drilling Operation
When the crew at the location of the exposed drill string or tool requests the operator to stop operation:
Step 1: The crew must communicate a stop command to the operator.
Step 2: When stop command is received, the operator must immediately stop the machine. After machine has
stopped, the operator must return a message confirming that the message was received and
understood.
Radio Communication to Resume Drilling Operation
If start-up is requested by the machine operator:
Step 1: The operator must request authorization from the crew at the location of the exposed rod or tool to
resume rotation or thrust.
Step 2: The crew at the location of the exposed rod or tool must respond as appropriate, but must not give
authorization to resume until everyone is away from the rod or cutting tool and everyone has been
informed that start-up will occur.
Step 3: If authorization to resume has been received by the machine operator, the operator must require
confirmation for start-up from the crew at the exit location.
Step 4: When confirmation is received, the operator may resume operation.
If start-up is requested by the crew at the location of the exposed rod or tool:
Step 1: After checking that everyone at the location of the exposed rod or tool is away from the cutting tool and
everyone has been informed that start-up will occur, a start-up command may be sent to the operator.
Step 2: When the start-up command is received, the operator must return a message confirming that the
message was received and understood.
Step 3: The crew at the location of the exposed rod or tool must respond by providing confirmation of the
machine operator's intention to start-up.
Step 4: When confirmation is received, the operator may resume operation.
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