Overhead Crane Operators

1. Overhead Crane OperatorsOverhead Crane Operators

2. Electrical
Mechanical

3. Note:- 1) Crane weight and wheel loads are approx. Values given to evaluate size of supportingNote:- 1) Crane weight and wheel loads are approx. Values given to evaluate size of supporting
structure.structure.
2) Pendent push button is suspended from Hoist / crab.2) Pendent push button is suspended from Hoist / crab.
3) Hook approach: a) Hook position is assumed at center of rope drum3) Hook approach: a) Hook position is assumed at center of rope drum
b) Dimensions given are without consideration of DSL and its locationb) Dimensions given are without consideration of DSL and its location
4) A. C. Disc brakes are provided for all motors4) A. C. Disc brakes are provided for all motors
5) For SG - EOT Hoist with Electric Trolley will be supplied. For DG - EOT Hoist with crab assembly5) For SG - EOT Hoist with Electric Trolley will be supplied. For DG - EOT Hoist with crab assembly
will be supplied.will be supplied.
6) Dimensions E & F will change for higher lifts.6) Dimensions E & F will change for higher lifts.
7) For every fraction of spans above the specified span Dimensions of nearest higher span shall be7) For every fraction of spans above the specified span Dimensions of nearest higher span shall be
applicable.applicable.
8) Cranes can be offered to suit higher size of runway rails on request.8) Cranes can be offered to suit higher size of runway rails on request.
9) Data tolerance + 10%9) Data tolerance + 10%
10) For SG - EOT Diameter of long travel wheel is 150 and 250 for cranes upto 3Tx12 mtrs. and 5Tx310) For SG - EOT Diameter of long travel wheel is 150 and 250 for cranes upto 3Tx12 mtrs. and 5Tx3
mtrs to 10T x 12 mtrs. respectively.mtrs to 10T x 12 mtrs. respectively.
11) (L) Lift on crane = Height of Rail (R) + C - K11) (L) Lift on crane = Height of Rail (R) + C - K
Selection Of Over Head Crane

4. @ An overhead crane@ An overhead crane
operator’s job is veryoperator’s job is very
importantimportant
@ Employers and employees need to be@ Employers and employees need to be
aware that all cranes are different and mayaware that all cranes are different and may
have specific operating, safety, inspection andhave specific operating, safety, inspection and
maintenance requirements.maintenance requirements.
@ It is essential that you have the@ It is essential that you have the
manufacturers operating manualsmanufacturers operating manuals

5. OVERHEAD CRANEOVERHEAD CRANE
SAFETYSAFETY

6. OVERHEAD AND GANTRY CRANEOVERHEAD AND GANTRY CRANE
OPERATIONOPERATION
• Hoist operators must inspect equipment dailyHoist operators must inspect equipment daily
before use.before use.
• Do not operate a crane or hoist if limit switches,Do not operate a crane or hoist if limit switches,
steel ropes, chains or other components are wornsteel ropes, chains or other components are worn
or in disrepair.or in disrepair.
• Replace nylon or web slings immediately ifReplace nylon or web slings immediately if
excessively worn.excessively worn.

7. OVERHEAD AND GANTRY CRANE
OPERATION
• Associates in the direction of travel
should be warned to move and remain
clear of a lifted load at all times.
• Loads should not be suspended over personnel
below.
• Under no circumstances may anyone ride the
hook or load.
• Directional movement should be made
smoothly and deliberately. Avoid rapid
movements in any direction.

8. OVERHEAD AND GANTRY CRANE
OPERATION
• Do not exceed the rated load
capacity of the crane, hoist,
chain, cable, slings, or other
component.
• Slings, load chains and other lifting devices must
be fully and securely seated in the hook before
moving a load. Remove slack from the sling,
chain, or cable before lifting a load.

9. OVERHEAD AND GANTRY CRANE
OPERATION
• Use the following practices to avoid swinging
loads:
> Locate the hoist directly above the
lifting point of the load before lifting.
> Lower loads directly below the hoist.
> Keep hoisting ropes vertical. Do not
pull or push the load.
> Maintain two full wraps of cable on the
hoisting drum.

10. OVERHEAD AND GANTRY CRANE
OPERATION
• When lifting loads at or near capacity, test the
hoist brakes by returning the master switch or
push button to the “OFF” position after raising
the load a few inches off the floor. If the brakes
do not hold, lower the load to the floor slowly and
do not operate the crane. Report the situation
immediately and DO NOT USE until repaired.

11. OVERHEAD AND GANTRY CRANE
OPERATION
• Ensure that all loads are lifted high enough to
clear obstructions before moving the bridge or
trolley. Whenever possible, maintain a minimum
clearance of one foot above loads and to the sides.
Raise the load only to the height necessary to
clear lower objects.
• Never pull a hoist by the pendant
cable.

12. OVERHEAD AND GANTRY CRANE
OPERATION
• Never leave the controls unattended while a load
is suspended. If it becomes necessary to leave the
controls, lower the load to the floor.
• Familiarize yourself with the location of the
disconnect switch.
• If loss of electrical power occurs, place controls
in the “OFF” position to prevent unexpected
startup upon restoration of power.

13. OVERHEAD AND GANTRY CRANE
OPERATION
• Disconnect power to a hoist that is
unsafe or in need of repair. Arrange to
have the disconnect switch locked and
the control panel tagged with an “Out
of Order” or “Do Not Operate” tag.
Never operate a hoist that has been
tagged with an “Out of Order” or “Do
Not Operate” tag, or is your opinion,
UNSAFE TO OPERATE…

14. HOISTS / CRANES
Daily Inspection Checklist
• Check for any loose or missing parts.
• Check end stops. End stops prevent the
trolley from running off the beam.
• Know the location of disconnect
switch that will cut the power off
only to the hoist or crane. Be sure
it is readily accessible and not blocked.

15. HOISTS / CRANES
Daily Inspection Checklist
• Make sure all control buttons are
labeled to indicate their function.
Operate each button to make sure
it functions properly, releases
immediately, and does not stick.
NN
WW
SS
EE
• Check upper hoist limit switch by slowly raising
the block to trip the switch.
• Lower the hoist block to activate the lower limit
switch if the hoist is so equipped, leaving at least
one turn of rope on the take-up drum.

16. HOISTS / CRANES
Daily Inspection Checklist
• Make sure wire rope is properly seated in its
drum and sheave grooves without any slack or
overlapping.
• Operate the crane or hoist several feet in each
direction that it travels. Listen for any unusual
noises. Look for any jerky movements.
• When moving an A frame hoist, take care to
ensure that the wheels on each side stay on the
track.

17. HOISTS / CRANES
Daily Inspection Checklist
• Check all hooks. Hooks should not be cracked,
stretched, bent, or twisted. Each hook must have
a safety latch that automatically closes the
throat of the hook. If the latch is bent, spring
is broken, or is otherwise damaged the latch must
be repaired before use. Hooks should rotate
freely in block assembly without any “grinding”
felt or heard.

18. HOISTS / CRANES
Daily Inspection Checklist
• Check the block assembly for structural damage
or cracks in any components. Sheaves should
rotate freely without any grinding felt or heard
coming from the bearings. The sheave guard
must be unbroken and intact. No part of the
sheave guard should be in contact with the wire
rope or sheave.

19. HOISTS / CRANES
Daily Inspection Checklist
• Check the wire rope by lowering the block to the
lowest level and looking for the following conditions.
If any of these conditions are observed, they should be
reported immediately.
> Reduced diameter of the rope. This may indicate
the rope has been stretched, has lost its inner core
support, or has worn outside wires.
> Any number of broken strands of wires.
> Kinked, crushed, cut, or
“bird caged” wiring, or wiring
with heat damage.

20. HOISTS / CRANES
Daily Inspection Checklist
• Check load chain for damage, wear at contact
points, cracks, or distorted (bent, twisted, or
stretched) links. Inspect all mechanical coupling
links to insure linking pins are secure and in good
condition. Report unsafe conditions immediately.

21. HOISTS / CRANES
Daily Inspection Checklist
• Check the condition and capacity
of nylon or synthetic web slings.
Capacity ratings must be legible
on the manufacturer’s label. The
capacity of the sling being used
must be adequate for the load and
attachment method. Replace
slings immediately if excessive
wear occurs.

22. @ The minimum qualifications for an@ The minimum qualifications for an
employee selected to operate a crane are asemployee selected to operate a crane are as
follows:follows:
* Corrected vision* Corrected vision
* Effective use of all 4 limbs* Effective use of all 4 limbs
* Sufficient height to operate the controls & in* Sufficient height to operate the controls & in
to the working area.to the working area.
* coordination between eyes, hands, and feet.* coordination between eyes, hands, and feet.
* Be free of known convulsive disorders and* Be free of known convulsive disorders and
episodes of unconsciousness.episodes of unconsciousness.
* Every 3 Year medical Fitness Check up is* Every 3 Year medical Fitness Check up is
necessarynecessary

23. Sample PermitSample Permit
CRANE OPERATOR PERMIT
(Firm Name)
Operator’s Name:
Operator’s Number:
Is Authorized To Operate: (Insert Type of crane/Crane(s) Authorized)
Restrictions: (Explanation of Restrictions)
Date Issued: (Month-Day-Year
Date Expiring (Month-Day-Year)
By Issuing Authority: _______________________________________________
Title

24. Personal Protective EquipmentPersonal Protective Equipment
Head ProtectionHead Protection
PROPERPROPER
CLOTHING &CLOTHING &
DRESSDRESS
Safety FootSafety Foot
WearWear
Hearing ProtectionHearing Protection
Face ProtectionFace Protection
Hand ProtectionHand Protection
RespiratorsRespirators
Fall ProtectionFall Protection
Special ClothingSpecial Clothing

25. Shift/Operator Inspection ChecksShift/Operator Inspection Checks
Inspection ItemInspection Item Description of Inspection Check PointsDescription of Inspection Check Points
Tagged Crane or HoistTagged Crane or Hoist Check that crane or hoist is not tagged with an out-of-order sign.Check that crane or hoist is not tagged with an out-of-order sign.
Control DevicesControl Devices Test run that all motions agree with control device markings.Test run that all motions agree with control device markings.
BrakesBrakes Check that all motions do not have excessive drift and that stopping distances areCheck that all motions do not have excessive drift and that stopping distances are
normalnormal
HookHook Check for damage, cracks, nicks, gouges, deformations of the throat opening, wearCheck for damage, cracks, nicks, gouges, deformations of the throat opening, wear
on saddle or load bearing point, and twist. Refer to the manual furnished by theon saddle or load bearing point, and twist. Refer to the manual furnished by the
original manufacturer of the crane.original manufacturer of the crane.
Hook LatchHook Latch If a hook latch is required, check for proper operation.If a hook latch is required, check for proper operation.
Wire RopeWire Rope Check for broken wires, broken strands, kinks, and any deformation or damage to theCheck for broken wires, broken strands, kinks, and any deformation or damage to the
rope structure.rope structure.
RevvingRevving Check that the wire rope is properly revved and that rope parts are not twisted aboutCheck that the wire rope is properly revved and that rope parts are not twisted about
each other.each other.
Limit SwitchesLimit Switches Check that the upper limit device stops lifting motion of the hoist load block beforeCheck that the upper limit device stops lifting motion of the hoist load block before
striking any part of the hoist or crane.striking any part of the hoist or crane.
Oil LeakageOil Leakage Check for any sign of oil leakage on the crane and on the floor area beneath theCheck for any sign of oil leakage on the crane and on the floor area beneath the
crane.crane.
Unusual SoundsUnusual Sounds Check for any unusual sounds from the crane or hoist mechanism while operating theCheck for any unusual sounds from the crane or hoist mechanism while operating the
crane or hoistcrane or hoist
Warning and Safety LabelsWarning and Safety Labels Check that warning and other safety labels are not missing and that they are legible.Check that warning and other safety labels are not missing and that they are legible.
Housekeeping andHousekeeping and
LightingLighting
Check area for accumulation of material, trip or slip hazards, and poor lightingCheck area for accumulation of material, trip or slip hazards, and poor lighting

26. @ A hoisting limit switch on a crane or hoisting device@ A hoisting limit switch on a crane or hoisting device
must not be used as an operating control unless themust not be used as an operating control unless the
crane is also equipped with a backup limit switch.crane is also equipped with a backup limit switch.
Operating PointsOperating Points
@ A load must not be lowered below a point where@ A load must not be lowered below a point where
less than 2 full wraps of wire rope remain on theless than 2 full wraps of wire rope remain on the
hoisting drum.hoisting drum.
@ If there is doubt, safety of a crane or hoisting, the@ If there is doubt, safety of a crane or hoisting, the
operator must immediately stop the crane and report theoperator must immediately stop the crane and report the
condition creating the doubt to the supervisor.condition creating the doubt to the supervisor.
@ An operator must only respond to signals from the@ An operator must only respond to signals from the
employee directing the liftemployee directing the lift
@ Compressed gases can only be lifted by a cradle or@ Compressed gases can only be lifted by a cradle or
enclosed platform.enclosed platform.

27. Standard Hand Signals For Controlling OverheadStandard Hand Signals For Controlling Overhead
And Gantry CranesAnd Gantry Cranes
HOIST. With forearm vertical,HOIST. With forearm vertical,
forefinger pointing up, moveforefinger pointing up, move
hand in small horizontal circlehand in small horizontal circle
LOWER. With arm extendedLOWER. With arm extended
downward, forefinger pointingdownward, forefinger pointing
down, move hand in smalldown, move hand in small
horizontal circle.horizontal circle.

28. Standard Hand Signals For Controlling OverheadStandard Hand Signals For Controlling Overhead
And Gantry CranesAnd Gantry Cranes
BRIDGE TRAVEL. Arm extendedBRIDGE TRAVEL. Arm extended
forward, hand open and slightlyforward, hand open and slightly
raised, make pushing motion inraised, make pushing motion in
direction of travel.direction of travel.
TROLLEY TRAVEL. Palm up,TROLLEY TRAVEL. Palm up,
fingers closed, thumbfingers closed, thumb
pointing in direction ofpointing in direction of
motion, jerk hand horizontally.motion, jerk hand horizontally.

29. Standard Hand Signals For Controlling OverheadStandard Hand Signals For Controlling Overhead
And Gantry CranesAnd Gantry Cranes
STOP. Arm extended, palmSTOP. Arm extended, palm
down, hold position rigidly.down, hold position rigidly.
EMERGENCY STOP. ArmEMERGENCY STOP. Arm
extended, palm down,extended, palm down,
move hand rapidly rightmove hand rapidly right
and left.and left.

30. Standard Hand Signals For Controlling OverheadStandard Hand Signals For Controlling Overhead
And Gantry CranesAnd Gantry Cranes
MULTIPLE TROLLEYS. Hold upMULTIPLE TROLLEYS. Hold up
one finger for block marked “1”one finger for block marked “1”
and two fingers for blockand two fingers for block
marked “2”. Regular signalsmarked “2”. Regular signals
follow.follow.
MOVE SLOWLY. Use one hand to giveMOVE SLOWLY. Use one hand to give
any motion signal and place otherany motion signal and place other
hand motionless in front of handhand motionless in front of hand
giving the motion signal. (Hoist Slowlygiving the motion signal. (Hoist Slowly
shown as an example.)shown as an example.)

31. Standard Hand Signals For Controlling OverheadStandard Hand Signals For Controlling Overhead
And Gantry CranesAnd Gantry Cranes
MAGNET ISMAGNET IS
DISCONNECTED.DISCONNECTED.
Crane operatorCrane operator
spreads both handsspreads both hands
apart – palms up.apart – palms up.

32. InspectionInspection
The inspection procedure for cranes in regularThe inspection procedure for cranes in regular
service is divided into 2 general classifications:service is divided into 2 general classifications:
@ Monthly to quarterly or at intervals of 100@ Monthly to quarterly or at intervals of 100
hours of use, whichever comes first.hours of use, whichever comes first.
@ Annually or at intervals of 500 hours of use,@ Annually or at intervals of 500 hours of use,
whichever comes first.whichever comes first.
The inspections cover topics outlined inThe inspections cover topics outlined in
the standard or manufacturers guidelines.the standard or manufacturers guidelines.

33. MaintenanceMaintenance
# A preventative maintenance program will be# A preventative maintenance program will be
established and the program will be based on theestablished and the program will be based on the
manufacturer’s recommendationsmanufacturer’s recommendations
# Application is reviewed by a qualified person.# Application is reviewed by a qualified person.
Before adjustments or repairs are made on a
crane, all of the following precautions must be
taken:
1. The crane will be moved to a location where1. The crane will be moved to a location where
it will cause the least interference with otherit will cause the least interference with other
moving equipment on the track or rails andmoving equipment on the track or rails and
operations in the area.operations in the area.

34. 2. Controllers will be placed in the “off” position.2. Controllers will be placed in the “off” position.
3. The main switch will be placed in the “off”3. The main switch will be placed in the “off”
position or “open” position and LOCKED OUT,position or “open” position and LOCKED OUT,
except where power is necessary to adjust orexcept where power is necessary to adjust or
service the craneservice the crane
4. A warning sign or “out of order” sign will be4. A warning sign or “out of order” sign will be
placed at the operator control station.placed at the operator control station.
5. A Caution Board will be provided while5. A Caution Board will be provided while
maintenance is performed on the crane.maintenance is performed on the crane.

35. In the event of power failureIn the event of power failure
@ The operator must place all controllers in the “off”@ The operator must place all controllers in the “off”
position.position.
@ When an operator leaves a crane unattended he@ When an operator leaves a crane unattended he
must land any attached load.must land any attached load.
@ Place the controllers in the “off” position, and open@ Place the controllers in the “off” position, and open
the main switch.the main switch.
@ Before closing a main switch the operator must@ Before closing a main switch the operator must
make sure all controllers are in the “off” position.make sure all controllers are in the “off” position.
@ The main switch does not need to be opened on a@ The main switch does not need to be opened on a
pendant-controlled crane if the crane is left unattendedpendant-controlled crane if the crane is left unattended
for short periods.for short periods.

36. VIJAY VYAS