Crane_and_Lifting_Safetygggggvggggfdsdgjjhfddfggcc_1689749209.pdf

Crane & Lifting Safety
KAUSHAR AZAM

Major Causes of Crane Accidents
• Contact with power
lines
• Overturns
• Falls
• Mechanical failures
2

How Do Accidents Occur?
• Lack of communication -
the point of operation is far
distance from the crane
operator or not in full view
of the operator
• Lack of training
• Instability – unsecured load,
load capacity exceeded, or
ground not level or too soft
• Inadequate maintenance or
inspection
3

• Improper load rating
• Excessive speeds
• No proper hand
signals
• Inadequate
inspection and
maintenance
• Unguarded parts
• Unguarded swing
radius
4
• Working too close to
power lines
• Safety equipment not
functioning properly
• Shattered windows
• No steps/guardrails
walkways
• No / Damaged boom
angle indicator
• Not using / improper
outriggers pad
Crane Hazards

Crane Hazards
5
Defective or damaged sheaves Damaged windows / poor visibility
Malfunctioning or missing boom angle indicator
Poor out rigger pad/unstable ground

Planning Before Start-Up
• Level the crane and ensure support surface is firm and
able to support the load
• Contact power line owners and determine precautions.
Know the location and voltage of overhead power lines.
• Know the basic crane capacities, limitations, and job site
restrictions, such as the location of power lines,
unstable soil, or high winds.
• Make other personnel aware of hoisting activities.
• Barricade areas within swing radius.
• Ensure proper maintenance and inspections.
• Determine safe areas to unload the materials or actual
place of erection.
6

7
Is a person capable of
assessing and planning a lift,
selecting, inspecting, installing
the lifting equipment and
accessories, and completing
the necessary documentation.
He should have the necessary
practical and theoretical
knowledge and experience of
the equipment to be used to
enable him to detect defects,
weaknesses or anomalies that
might jeopardise safe lifting
operations.
Broken
Track
Competent Person

8
•All crane must be certified by the 3rd Party in
annual basis
•Operators must hold a current valid certificate to
operate the assigned equipment
•Crane operator shall be tested for competency by
client or Government representative
•Crane operator manual in English must be made
available in operators cabin
•All cranes must be fitted with anti two block
device
Crane and its Operator

9
Crane and its Operator
All operators must be trained and conversant with the
following;
1. The safe operation of the machine
2. Location and operation of all safety back up systems
3. Reading and understanding of the load chart
4. Capabilities of the machine in all unusual circumstances
5. Any peculiarities pertaining to the machine
6. No operator will be permitted to operate a machine for
which he is not trained (Except he is giving adequate
training on the machine)
7. Crane key should not be left by the operator whenever he
leave the crane cabin
8. Operator should not leave the crane with the still load
hanging or not yet fixed

What to Inspect?
 Correct air pressure and no
leaks
 Tires properly inflated
 Clearance for tail swing
 Wire rope wear
 Physical damage to crane
 Loose or missing hardware,
nuts, or bolts
 Fluid leaks
 Others as per Crane Check
List
10

11
Broken Strands
Damaged wire rope must be taken out of service
Crushed Rope
Damaged Wire Rope

12
Damaged web sling must be taken out of service
Damaged Web Sling

 Crane manual should
always available in
Operators booth
 Make sure the crane
operator can see the:
– Rated Load Capacities
– Operating Speeds
– Special Hazard
Warning or Instruction
13
Load Capacity-Speed-Warnings
Load Rating Chart

Load Moment Indicator
 Refer to shipping ticket or
other documentation
 Ensure lift calculations are
correct
 Ensure load is within load
chart rating for boom length
and load radius of crane
 Crane is rated by the
maximum weight it will lift at
a minimum radius and
minimum boom length – the
further from its centerpoint,
the less it will lift
14

Load Limiting Factors
 Not level
 Wind
 Side loads
 On its wheels
 Lifting over the side
 Use of extensions, jibs and
other attachments
 Limits of wire rope, slings
and lifting devices
15

Cranes Lifting Principles
 Center of Gravity
 Leverage
 Stability
 Structural
Integrity
16

Load Example – 30 ton crane
 Will lift 30tons at 3m from the center pin of the
crane
 Based on level surface, no wind, and outriggers
fully extended
 At 7.5m from the center pin with a 25m boom
length, the capacity is only 6.8tons
 At 22.5m from the center pin, the capacity is
only 2tons
17

Improper Slinging/computation of load
18
Improper Slinging / computation of load’s weight
or speeds can result in the tipping/tumbling of the crane

Improper Slinging/computation of load
19
Improper Slinging / computation of load’s weight
or speeds can result in the tipping/tumbling of the crane

Rigging
 No person will be employed as a rigger until successful
completion of the riggers training course
 Only persons qualified as riggers will directly supervise
or be engaged in rigging work
 Each rigger will be issued with a badge for identification
as a qualified rigger
 A rigger must act in a manner that does not endanger
himself or others at work
 A lifting plan must be in place for lift of 40 tons and
above, and all special and difficult lifts (high, long to
reach or two crane lifts)
20

Lifting Plan
Lifting plan must include as a minimum;
 Position of item to be lifted and lifting equipment (Pick up and
set down)
 Weight and configuration of item to be lifted
 Radius of lift
 Calculated capacity of lifting equipment at all stages (Load chart
attached)
 Details of lifting equipment (shackles, lifting beams etc)
 Lifting restrictions
 Ground loads
21

Rigging Requirements
 All sling or steel wire shall be
kept in good condition
 Damage wire rope or any lifting
gears must be discarded
immediately
 All rigging equipment must have
a valid test certificate
 All rigging gear must be
inspected and records of
inspections kept (Competent
person and color code)
22

Quarterly Color Coding
23
JANUARY
FEBRUARY
MARCH
APRIL
MAY
JUNE
JULY
AUGUST
SEPTEMBER
OCTOBER
NOVEMBER
DECEMBER
INSPECTION AND COLOR CODING SHALL BE
CONDUCTED BY RIGGING COMPETENT PERSON

Hand Signal
24
An illustration of the
signals must be
posted at the job site.
This standard signal
shall be used by the
rigger and must be
clearly understood by
the crane operator

Barricade Affected Area
25
Stay out of the swing radius of the crane
Make sure there are barrier guards showing swing radius

26
Provide stable
footings for
outriggers
Rigging and Slinging

27
Use “Tag Lines” on
ALL lifts

28
Use “Choker Hitch”
on loose material

29
Use “Dunnage” and
“Wedges” for stacking

32
Secure the block to the
anchor point on the crane
Sheaves will
be damaged

33
90O
MAX
Max.90
Sling angle must
be <90

34
ALL hooks must have
safety latches

35
Use softener to
protect the slings

36
Use softeners on the load NOT to
the sling (otherwise damage
cannot be seen)

37
Do NOT overcrowd a
hook – use a shackle

38
Do NOT overcrowd a hook –
use a shackle

39
Never stand under a load

40
Demarcate
affected
lifting areas

41
Ensure hook is above
load centre before lifting

42
For container lifts, use
“Shackles” or “Container
slings”

43
Required personnel
during Crane lifting:
-Crane Operator
-Rigger / Slinger
-Rigger /Signal man

45
IF IT TAKES MORE THAN
ONE MAN,
SOMETHING’S WRONG ! !

Battening Down
46
It is sometimes imagined that
slings in choke hitch can be
made more secure by striking
the eye of a sling in an attempt
to force the bight into closer
contact with the load.
This dangerous
malpractice is often called
“battening down”.
The bight should be
allowed to assume its natural
angle which will be about 120° NATURAL ANGLE 120º

Man Basket Operation
47
Permit must be obtained prior to any
Man Basket Operation and the
following conditions must be met;
•Only approved Man basket is to be
used for lifting personnel by a crane
•Crane must have positive drive up
and down
•Crane must be equipped with a
functional anti two block device
•Crane must not operate outside of a
radius that reduces the cranes
capacity by more than 50%
•All shackle pins must be well secured
•Additional sling must attach to the
headache ball as a lifeline

48
•The man-cage must not be
used to lift personnel and
material at the same time
•Only two persons are to be
lifted in the Man basket
•All personnel must wear full
body harness
•All signal must be given by a
qualified rigger identified by a
jacket

49
• Man-basket permit will be
valid only for one operation
•A trial lift will be first
conducted prior to actual man
basket operation
• Once basket is lifted
personnel are not allowed to
climb in or out of it

Summary
50
An unstable load,
lack of
communication, lack
of training, and
inadequate
maintenance or
inspection are major
contributors to crane
accidents.

51
• Operators or others working in the area can be victims
to “struck by" and "caught in" injuries.
• Contact with power lines causes many accidents.
• A competent person must inspect a crane regularly to
insure it is in proper order.
• Planning and training reduces accidents.
Summary
LIFT SAFELY AND LIVE HAPPY

Crane_and_Lifting_Safetygggggvggggfdsdgjjhfddfggcc_1689749209.pdf

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