Final Pres for Crane Operators
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Transcript of Final Pres for Crane Operators
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STATISTICS OF THE DANGEROUS OCCURENCES RELATED TO CRANE
IN TPCIL SINCE 2011
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S.NO DATE Time Description Result
1 09.01.2012 5:25 PM While lifting the chipped pile with help of crane, the
chipped pile fall loose on the ground. D O Item a.
2
24.02.2012 12:15 PM Worker run over by hydra. Fatality
3
27.04.2012 4:15 PM Hook drop off while lifting the steel bar cage D O Item a.
4
02.06.2012 3:45 AM Crane swing the steel cage and hit the mouth of worker. M T
5
10.06.2012 1:00 PM Crane boom collapsed due to overloading D O Item g.
6
28.06.2012 2:15 AM Crane counter weigh swing and hit stationery vehicle. D O Item g.
7
14.08.2012 9:00 PM Crane boom collapsed due to dragging of load. D O Item a.
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S.NO DATE Time Description Result
8
28.11.2012 12:35 PM Hydra touched the 11 KV line D.O
9
02.06.2013 3:40 PMWhile reversing the Hydra, the hydra's boom got contacted with the
over head barrier's scaffold pipe, then the pipe hits the cable(11 KV Cable), results the DTR got tripped
Do
10
18.06.2013 3:45 PM The boom of the crane hit and damaged the Y Phase of the 11 kV cable and causing a trip to BTG areas. DO
11
31.07.2013 4:30 PMwhile lifting a pipe of 24 Ton using a 150T crawler crane and the
belts capacity of 10T x 2 Numbers, one belt snapped and the pipe dropped to the ground.
DO
12
29.07.2013 3:40 PMwhile lifting a beam of 1.5 Ton using 150 ton crawler crane, the
winch drum air pressure hose burst resulting in winch brake failure. The beam was dropped from 30 m to the ground.
13
25.01.2013 7:30 AM hydra tilting during tandem lifting D.O
14
26.01.2013 10:30 AM hydra tilting during tandem lifting D.O
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S.NO DATE Time Description Result
1526.07.2013 11:30 AM While hydra is shifting a coil at Boiler #2, it toppled due to uneven
ground. There is no injury to person. DO
16
22.08.2013
05.38 PM
While a Hydra was shifting a rectangular duct at the material yard, it moved into an uneven soft depression (due to rain) and toppled
on its leftDO
17
14.11.2013 8:45 AM
The tube supporting pipes stored behind the MPH #1 was to be shifted to TG#1 maintenance bay with the help of 150T crane, but the team of M/s MECH Engineering used two hydras bearing reg. no. KA 35 xxxx and MH 35 xxxx to perform the shifting of TSP by
tandem lifting. The hydra bearing reg. no. MH 35 xxxx front tyre got stuck in the wet soil which tilted the hydra partially, as a immediate action the hydra operator lowered the load but due the poor road
condition and wet soil the hydra toppled.
DO
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WHY CRANES?
The crane is the primary machine used for the vertical movement of construction materials.
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MATERIALS HANDLING EQUIPMENT
1. Eot Cranes
2. Gantry Cranes
3. Semi Gantry
4. Pillar Type
5. Fork Lifts
6. Jambos
7. Mobile Cranes
8. Loco
9. Front End Loader
• Lorries, Trailors.
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SAFE OPERATION OF CRANE DEPENDS ON
Rigger
Crane Operator
Maintenance Persons
Competent persons
Statutory Authority
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TYPES OF CRANES MOSTLY USED IN CONSTRUCTION INDUSTRY
1) Crawler Cranes:
2)Wheel-Mount Cranes:
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STATUES
FACTORIES ACT 1948 – SECTION 29.
Lifting machines, chains, ropes, lifting tackles to be tested by competent person.
Register to be maintained with all particulars.
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OPERATOR AND DRIVERS
Qualified & Licensed operators
Experienced Person
Physically Fit
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Case Study Videos:
1) Video 12) Video 23) Video 34) Video 45) Video 5
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5 TONALWAYS ENSURE THE
LIFTING DEVICE AND ALL SUPPORTING
COMPONENTS ARE RATED FOR THE LOAD TO
BE LIFTED!
2TON
10 TON LOAD
KNOW THE RATED LOAD OF THE CRANE
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Factors to be considered before lifting with crane
Soil ConditionAccessWeight of the loadHeight of the load to be liftedMaximum angle of the boom to lift the load.Sling heightHook block height
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SAFETY DEVICES IN CRANE
Angle Plate
Pointer
Boom Limit Switch
Over Hoist Limit switch
Hook Latch
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SAFETY DEVICES IN CRANEBOOM ANGLE INDICATOR
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DESCRIPTION OF LOAD INDICATOR
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GENERAL SAFETY INSTRUCTION
1. When not in use crane should be parked with load hook raised, control switches to neutral & main switch open.
2. No crane shall be used for the purpose of transportation of passengers.
3. Cranes on same runways should be avoided from collision.
4. The Crane Operator should ensure the availability & serviceable condition of fire extinguishers.
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5. Crane should not be used for dragging & pulling.
6. Impact load should be avoided.
7. The condition of ropes, slings are to be checked before loading.
8. Notify the shift in charge for and special lifts.
9. Spreader beam to be used for lengthy objects.
10.Operator should follow signal from only one person. But he should respond for stop signal from any persons.
11.For any maintenance work on crane, runway “Permit to work” system to be followed.
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Lifting OperationsPossible causes for failure while lifting
Poor machine condition
Machine configuration not to specification
Improper revving
Improper use of outriggers
Soft footing
Crane not in level
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Lifting OperationsPossible causes for failure while lifting
Side loading
Increase of load radius
Unsafe rigging practice, Rapid swing rate
Impact loading - rapid acceleration/deceleration
High wind speeds
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TANDEM LIFTING
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MIRRORS LOCATED ON EITHER SIDE FOR OPERATOR VIEW OF HOOK
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MIRROR LOCATED ON RIGHT SIDE
OF OPERATOR CABIN TO VIEW HOOK MIRROR LOCATED ON LEFT SIDE OF OPERATOR CABIN TO VIEW
HOOK
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VIEW OF MAN STANDING AT HOOK FROM OPERATOR SEAT., PHOTO TAKEN FROM OPERATOR’S SEAT.THRU RIGHT SIDE MIRROR.
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VIEW OF SAME MAN STANDING AT HOOK FROM OPERATOR SEAT., PHOTO TAKEN FROM OPERATOR’S SEAT.THRU LEFT SIDE MIRROR
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Hand signals shall be post on the equipment or conspicuously at the jobsite.
ANSI B30.5 – Hand Signal Chart
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Do's After the training1) Reflecting jacket should be wore by signal man.2) Communication between Signal Man and Operator.(Walky-Talky or
Whistle).3) Before Performing the activity ask for the permit(Load > 20 T) and
Permit for tandem lifting.4) No Unauthorized operator is entertained.5) Only Authorized operators of that particular crane only should
operate it.6) No unsafe act will be performed.7) If anyone forces you to do unsafe act turn–off the ignition and come
to fire-station along with key.
8) Give a call at 8978681139 - M N Murthy to provide any information regarding your crane operating conditions or anyone forcing to do an unsafe act.
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ANY QUERIES??
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Signalperson: Signals shall be Discernible or audible at all times. No response shall be made unless signals are clearly understood.
Hand Signals
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Hoist: With the forearm vertical, forefinger pointing up, move hand in small horizontal circle.
Hand Signals - Hoist
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Lower: With the arm extended downward, forefinger pointing down move hand in small horizontal circle
Hand Signals - Lower
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Use Main Hoist: Tap fist on top of head then use regular signals.
Hand Signals – Main Hoist
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Use Whip-Line: (Auxiliary Hoist) Tap elbow with one hand, then use regular signals.
Hand Signals – Whip-line
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Raise Boom: Arm extended fingers closed with thumb pointing upward.
Hand Signals – Raise Boom
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Lower Boom: Arm extended fingers closed with thumb pointing downward.
Hand Signals – Lower Boom
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Move Slowly: Use one hand to give any motion signal and place the other hand motionless in front of hand giving the motion signal (Hoist slowly shown as example).
Hand Signals – Move Slowly
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Raise the Boom & Lower the Load: With arm extended, thumb pointing up, flex fingers in and out as long as load movement is desired.
Hand Signals – Raise Boom & Lower the Load
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Lower the Boom & Raise the Load: With arm extended, thumb pointing down, flex fingers in and out as long as load movement is desired.
Hand Signals – Lower the Boom& Raise the Load
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Swing: Arm extended, point with finger in direction of swing of boom.
Hand Signals - Swing
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Stop: Arm extended, palm down, move arm back and forth horizontally.
Hand Signals - Stop
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Emergency Stop: Both arms extended, palms down, move arms back and forth horizontally.
Hand Signals – Emergency Stop
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Travel: Arm extended forward hand open and slightly raised make a pushing motion in direction of travel
Hand Signals - Travel
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Dog Everything: Clasp hands in front of body.
Hand Signals Dog Everything
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Travel Both Tracks: Use both fists in front of body, making a circular motion about each other, indicating direction of travel, forward or backward. (For land cranes only)
Hand Signals – Travel Both Tracks
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Travel One Track: Lock the track on side indicated by raising fist. Travel opposite direction indicated by circular motion of other fist, rotated vertically in front of body. (For land cranes only)
Hand Signals – Travel One Track
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Extend Boom: (Hydraulic cranes) Both fists in front of body with thumbs pointing outward.
Hand Signals – Extend Boom
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Retract Boom: (Hydraulic cranes) Both fists in front of body with thumbs pointing towards each other.
Hand Signals – Retract Boom
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Extend Boom – One Hand Signal: (Hydraulic cranes) One fist in front of chest with thumb tapping on chest.
Hand Signals – Extend BoomOne Hand
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Retract Boom – One Hand Signal: (Hydraulic cranes) One fist in front of chest with thumb pointing outward and heel of fist tapping on chest.
Hand Signals – Retract BoomOne Hand