core drilling method
Safety Practice Compliance Procedure T10
Layne Christensen operates many
different types and brands of drilling
rigs and well service equipment. Each piece
of equipment and work method has different
procedures and safety practices. The following
pages will outline the safe work practices for
the barber drilling method.
Coring is a method of drilling that uses a high
speed rotating drill stem and barrel. The open
end bit cuts a “core” of sample and allows it to
be retrieved for logging and analysis.
Many types of drills can be set up for coring
operations. The following are specifically used
for coring in Layne operations.
n Longyear 34, 38, 44, 65
n CS1000, 1500, 4000
n Hagby/Onram 1000/2, 1000/3
n Joy 22
n Boyles Dresser 25, 37
n Boyles Brothers 15, 80
n Diamec 230, 251, 260
n Terramac 1000, 600
n UDR 1500
n JKS B30
Certain safety equipment is required to be
installed on all drill rigs. This includes:
n Fire Extinguisher
n First Aid/
n Emergency Reflective Road Triangles
n Back-up Alarm
n Visual Hazard Identification
(Safety Practice B10)
n Climbing Protection with full body
harness (Safety Practice A5)
n Functional Emergency Engine Kill Switch
n Equipment required by environmental site
specific health and safety plan
(Safety Practice E2)
n Back up alarm
Each individual must have the following
personal protective equipment:
n Safety Glasses
(Safety Practice A2)
n Hard Hat (Safety
n Safety Toed Shoes
(Safety Practice A1)
n Hearing Protection
(Safety Practice A3)
n Gloves (Safety Practice A1)
n Proper Clothing (close fitting, long pants
and shirts with sleeves)
SITE PREPARATION AND START UP
Prior to moving on the drill pad, adequate site
clearing and leveling should be performed.
Check the site for ground stability, overhead
obstructions such as power lines or tree limbs,
and ensure underground utility clearance has
Large rigs and doghouses are often mounted
on trailers. Caution should be exercised when
maneuvering these into position. Ensure
rigs, doghouses and pipe trailers are properly
blocked and leveled to prevent shifting
during drilling operations. In addition, any
n Never consume
alcohol or drugs prior
to or while on the
job. If taking over the
use the type that does
not cause drowsiness.
n Always operate the drill from the control
platform. The operator should never
leave the control panel while the drill is
in operation. Ensure all drive and feed
controls are in neutral when leaving
the control platform and shut down the
engine if leaving the work area.
n POSITION THE DRILL SO IT IS
IMPOSSIBLE FOR ANY PORTION
OF THE EQUIPMENT TO
COME WITHIN THE MINIMUM
REQUIRED SAFE DISTANCE TO
ENERGIZED LINES. Maintain at least
10 feet clearance of lines carrying 50,000
volts. One foot additional clearance is
required for every additional 30,000 volts.
If you do not know line voltage, ask the
electric utility. All overhead lines should
be considered energized.
n Never operate the drill during electrical
storms, high wind conditions or in poor
n Clean mud and grease from your boots
before mounting the drill platform or
climbing the mast. Always use handholds
and railings. When using a ladder, face
the ladder and put both hands on the side
rails. Always maintain “3-point” contact
on the ladder. Do not try to climb while
carrying tools. Use a bucket to raise and
lower hand tools. Watch for slippery or
uneven ground when dismounting.
n “Horseplay” is never allowed on the job.
n Wrench jaws should be periodically
inspected and replaced if necessary.
n Drill rods should not be held or lowered
with pipe wrenches
doghouse trailer or drill platform positioned
adjacent to the rig should have minimum
separation, and each platform should be level
and at the same height. Any gaps should be
covered with temporary decking to reduce
Before raising the mast, the rig must be
stabilized with leveling jacks and/or solid
cribbing. The drill should be leveled and
ground stability checked if it settles after
initial set up. Raise and lower the mast only
when leveling jacks are down. Fasten the
derrick extension or “stinger” with bolts and
the pin prior to elevating the derrick. Have a
crew member watch the mast as it is raised to
observe for caught cables or other problems.
Only operate the drill with the mast locked in
the raised position.
All personnel should be instructed to “stand
clear” of the rig and in the operators sight
immediately prior to starting the engine.
Make sure all gear boxes are in neutral and
all hydraulic levers are in non-actuating
positions to prevent the table from moving
while starting the engine. Start the engine
according to the manufacturer’s guide.
n Never attempt to operate the drill unless
you are fully trained in its use. Do not
allow unqualified persons to operate the
drill, unless fully supervised as part of a
n Wire rope must be properly matched
with each sheave. Too large and the rope
will pinch, too small and the sheave will
groove. Once a sheave is grooved, it will
pinch and damage larger rope.
n When stuck loads cannot be raised with
the hoist disconnect the hoist line and
connect the load directly to the feed
mechanism. Do this only when the pipe
is secured with a wrench or dog collar. Do
not use the leveling jacks for added pull.
n Minimize the shock to wire rope. Pull
loads smoothly and steadily, especially in
cold weather. Never use frozen ropes.
n Protect wire rope from sharp corners and
edges. Replace faulty guides and rollers.
n All hooks must be the type with a
and wire line
n Know the safe working load of the
equipment. Do not exceed the rated
capacity of hooks, rings, slings, links,
swivels, shackles, or other lifting devices.
n When handling wire rope, always wear
gloves. Do not guide rope on to hoist
drums with your hands. Replace wire rope
according to manufacturers specifications.
When new rope is installed, first lift a light
load to allow the rope to adjust.
n Never leave an unattended load
suspended in mid-air.
n Keep hands and feet away from pinch
points as slack is being taken up. Never
ride a hoist line up the mast.
n Never ride a hoist up the mast.
n Follow Safety Practice B13 for safe and
proper use to slings.
n If a string of drill rod or core barrel is
accidentally released into the hole, do not
attempt to grab the falling rod or wire line
with your hands or a wrench.
n Do not use your hands to clean mud or
drill fluid from the drill rod. A rag or rod
wiper should be used.
n Know all pinch points including break
out wrench, drive head and core barrels.
Color code all pinch points. Experienced
employees should show new employees
these places on the first day of work.
n Stand clear when breaking bits and subs.
n Mud pits should be fenced or taped off
with CAUTION tape.
n Laying down or adding pipe is a dangerous
operation. Always use a sling or strap
while handling pipe. Be sure bed stakes are
in place before laying down pipe. Finally,
watch your footing to prevent slips and
avoid stepping between pipe to prevent
smashed ankles. Stand to the side while
tripping or tailing pipe. Never stand under
the pipe or between the rig and pipe truck
while tripping pipe.
n Inspect and grease water swivel. Make sure
of tie off. Do not service swivel with rods
n Make sure foot clamp jaws are in place.
Keep tools and materials away from foot
clamp. Always shut down the engine
before servicing foot clamp. Keep bolts
and nuts tightened and all moving parts
n Make sure the quill hose is not twisted,
kinked or broken. Check wing nuts and
spud fittings, water swivel fittings, and be
sure whip checks are in place.
WIRE ROPE AND SLING SAFETY
n Most sheaves on rigs are stationary
with a single part line. Never increase
the number of sheaves, winch lines or
line parts without consulting the drill
n Use someone on the ground as a guide
during loading, unloading and backing.
Maintain sight of your spotter at all times.
n Secure all tools and equipment prior to
travel according to Safety Practice C3.
Secure the mast properly in the rest.
Never over tension the load line, or
damage can result.
n Ensure the weight of the drill is distributed
to the center line of the trailer and so
some of the load is transferred to the
pulling vehicle. Secure the unit with
adequate load binders or chains.
route of travel inspecting for depressions,
stumps, gullies, ruts or other obstacles.
n Inspect the drive train for loose or
damaged bolts, nuts, studs, shafts and
mountings after each shift.
n Use caution when traveling side hill.
Conservatively estimate the side-hill
capability of the drill to include shifting
loads. When possible, travel directly up
n Units using flotation tires should
remember to bleed air to proper tire
inflation before highway travel. Never
exceed 60 mph as too much heat can be
generated with high multi-ply tires.
n Perform and document a pre-shift safety
and maintenance inspection based on
the Layne Job site Safety Audit and
Vehicle Inspection forms. Perform
preventative maintenance according to
Safety Practice C4.
n Only properly qualified personnel should
drive the drill rig.
n Know all dimensions and weights of the
equipment, especially the overhead
clearance. Allow for mast overhang when
approaching corners, other vehicles or
structures. Be aware of service station and
motel canopies. Watch for low hanging
electrical lines, especially at entrances
to drill and commercial sites. Be aware
of increased height when the rig is
transported by trailer.
are in good
Perform a thorough pre-trip inspection,
including brake inspection, prior to travel.
Stop periodically along the route to
inspect the truck and the load.
n Insure the vehicle is never operated unless
the brakes are in good working order.
Perform a thorough brake inspection,
including brake adjustment, if necessary,
prior to travel.
NOTE: Airbrake inspection and
adjustment can only be performed by
personnel who have completed training
and received certification for airbrake
inspection and adjustment.
n Never travel with the mast raised or
n Remove the truck keys and chock the
wheels when the vehicle is unattended or
maintenance is being performed.
n When loading or unloading the drill, use
ramps of adequate design to carry the
weight. Always load or unload on even
n If battery acid gets in
your eyes or on
your skin, flush
large amounts of
water and get medical
n When charging a battery, turn off the
power source to the battery before
connecting the charger. Cell caps should
be loosened to allow escaping gas.
n Never smoke while fueling. Equipment
should be fueled with the engine and all
electrical switches off.
n Keep the fuel nozzle in contact with the
tank to prevent static sparks. Keep hoses
and containers in contact with metal
n Flammable substances should only be
carried in NFPA approved safety cans.
n Follow Layne Safety Practice C2 when
transporting more than 1,000 lbs of
n All rotating hazards, such as drive lines
or fan belts, should be covered. Be sure to
replace guards after maintenance.
n Tires are the key to safe travel. Inspect
tires for proper inflation. Also inspect for
the tire. Keep in mind it is not necessarily
the tread on the tire, but the age and use
history that can cause a blowout.
n Always wear safety glasses or a face shield
and use extreme caution when servicing
batteries. Perform battery maintenance
in a well ventilated area and never
smoke while servicing batteries. During
removal disconnect the ground clamp first.
During installation, connect the ground
your safety is layne christensen’s number one conCern