2. Click to edit Master title style
Safety Devices in Tower Crane
Authorized Operator & signalmen with
green card pass
Soil bearing strength, straightness of
Availing Fall Arrestor
Only one signalmen, Walkie talkie for
Multiple body earthing, lighting arrestor
& Aviation lamp.
Release Swing brake after work
Don’t Operate crane if wind speed is
more than 72kmph
Standardization of Rigging gang
3. Click to edit Master title style
Level ground - before lifting Loads
Trenches, edges - soil collapse – Crane
No High tension lines
No Traveling - loose soil, marshy land
Signals should be taken from only one
signalmen, hand signals should be clear
No Sudden stopping or sudden movement
Tagline – Load control
out-riggers fully extended - before lifting
Heavy Loads shouldn’t be lifted crane on
Slings should be protected from sharp edges
4. Click to edit Master title style
Preventing Crane Accidents
• Proper outrigger use
– Level (Even ground)
– Fully extended
– Stable compacted base
– Use cribbing to
distribute the load
– Check the oil leakage
(hydraulic jacks, knuckle
5. Click to edit Master title style
You must plan lifting operations carefully to ensure they are carried out safely. Your plan should result
in a safe system of work which may need to be written down if it is a complex lift. This record is
sometimes known as a method statement, and you must ensure that everyone involved understands it.
Key elements include:
planning – including site preparation, crane erection and dismantling;
selection, provision and use of a suitable crane and work equipment
Including safe slinging and signalling arrangements.
maintenance and examination of the crane and equipment;
provision of properly trained and competent personnel;
supervision of operations by personnel having the necessary authority;
thorough examinations, reports and other documents;
preventing unauthorised movement or use of the crane; and
measures to secure safety of persons not involved in the lifting.
Safe systems of Lifting work
6. Click to edit Master title style
Supervision of Lifting work
• The right level of supervision must be in
place for lifting operations, reflecting the
degree of risk and personnel involved in
the lifting operation.
• The crane supervisor should direct and
supervise the lifting operation to make
sure it is carried out in accordance with
the method statement.
• The crane supervisor should be
competent and suitably trained and
should have sufficient experience to carry
out all relevant duties and authority to
stop the lifting operation if it is judged
dangerous to proceed.
7. Click to edit Master title style
Safety features in Hydra Crane
• Over Load Limit Switch
• Over Hoist Limit Switch
• Reverse Horn
• Hook Latch
• Large Size rear View Mirror
• Extended Front & Rear
8. Click to edit Master title style
Safety Precautions while traveling
• Always use Tag line for controlling the load
• Use low gears while traveling with load.
• Don’t travel beyond 8 kmph with load and 15
kmph without load
• Don’t drive close to pits or excavated land
• Keep Boom as low as possible, check for proximity
of over head electric lines.
• Don’t drive down slopes in neutral gear.
• Avoid Sudden stopping or jerking movements
9. Click to edit Master title style
To prevent the booms of cranes coming in contact with
overhead cables, goal posts should be erected.
11. Click to edit Master title style
Launching girder tandem lifting
Tandem Lifting Operation
LG Weight 97 MT
12. 2. Traffic safety
To be ensured that work area is properly barricaded and free from third party entry
Trained watchman / Traffic Marshal provided
Required warning board, blinkers are arranged
Diversion board, rope light, reflection tape, are properly and distinctly provided
Barricade boards are properly aligned and anchored
3. Access egress& working platform
Safe access tower is erected and having “Green Tag”
Incase height of tower is more than 6 m, suitable support is tied with pier structure
Ladder is made of good material, free from damage, properly secured
Working plank is properly tied, and free from any damage
It is ensured that there is no gap left between the planks
H – 16 beams are not used as working platform or plank
Safety precautions need to follow during “Erection”
13. Rigging precautions
Lifting plan to be prepared before start of any erection and Lifting Data is checked and
I. Position of crane,
II. Working radius,
III. The load to be lifted Vs SWL (safe working load) of crane at that particular
working radius is checked and decided in advance.
IV. Suitable packing materials should be provided while slinging to reduce the
Location of front support / mid support & crane over ground marked with line.
All tools & tackles are selected as per required SWL
The crane is third party tested and having valid “GREEN CARD”
Slings, D shackle, all such lifting tools and tackle are having “Color Code” and certified
by a third party
All tools and tackles are free from any damage
Safety precautions need to follow during “Erection”
14. Safety precautions need to follow during
• Sling anchoring locations are proper for CG (Centre of gravity) balancing and properly
• Lifting item is free from obstruction and any loose material kept over it
• Signalman position is such that there is no vision obstruction between him and crane
• No person shall be allowed to be present below lifted load during any time
• To facilitate de hooking, person allow to go to top of pier must wear proper safety gear,
and duly anchor his full body safety harness till the time he is at top.
• Sufficient illumination to be ensured if job is to be done in dark hours
• No erection work to be done in case adverse weather condition
16. Rules for
KNOW THE WEIGHT OF THE
KNOW THE CENTER OF
GRAVITY OF THE LOAD.
MAKE LOAD ATTACHMENT
ABOVE THE CENTER OF
GRAVITY OF THE LOAD.
SELECT HITCH THAT WILL
HOLD AND CONTROL.
KNOW THE RATED CAPACITY
OF SLINGS AND HARDWARE.
17. Rules for Rigging
Select sling best suited for load.
Inspect all rigging before the lift.
Protect sling from sharp surfaces
Proper calculation of increased tension caused
by sling angles (on all rigging components!).
18. Rules for
Lift Lift slowly and stop slowly
Know Know limitations of all lifting devices used.
Lift Lift load a few inches then check rigging
Keep Keep personnel clear from lift area.
Calculate Calculate reductions when using choker hitch.
Allow Allow for D/d ratio on all wire rope slings.
20. Rigging equipment
• Custom design grabs, hooks,
clamps, or other lifting
accessories, for such units as
modular panels, prefabricated
structures and similar materials
• Marked to indicate the safe
• Be proof-tested prior to use to
125 percent of their rated load
22. Rigging equipment
for material handling
• Alloy steel chains
• Job or shop hooks and links,
or makeshift fasteners,
formed from bolts, rods, etc.,
or other such attachments,
shall not be used
23. Rigging equipment
• Four grades:
• Grade 28 General Utility
• Grade 43 High Test Chain
• Grade 70 Binding Chain
• Grade 80 Alloy Steel Chain:
The only one used for
• Alloy steel chains
• CP inspections made & based on
• Frequency of sling use;
• Severity of service conditions;
• Nature of lifts being made; and
• Experience gained on the service life of
slings used in similar circumstances.
• Such inspections at least once a year
• Documented & available
26. Rigging equipment for material handling
• Wire rope slings
• Protruding ends of strands in splices on slings and bridles covered or
• Wire rope shall not be secured by knots
• Except for eye splices in the ends of wires and for endless rope slings,
each wire rope used in hoisting or lowering, or in pulling loads, shall
consist of one continuous piece without knot or splice
31. • Wire rope slings
• Shall not be shortened with knots or bolts or other makeshift
• Legs shall not be kinked
• Basket hitch shall have the loads balanced to prevent slippage
• Padded or protected from the sharp edges
Rigging equipment for material handling
• Wire rope
• Hands or fingers shall not be
placed between the sling and
its load while the sling is being
tightened around the load
• A sling shall not be pulled from
under a load when the load is
resting on the sling
34. Rigging equipment for
• When U-bolt wire
rope clips used to
• U-bolt shall be
applied so that the
"U" section is in
contact with the
dead end of the rope
“Never saddle a dead horse”
35. Rigging equipment for
• Synthetic webbing (nylon, polyester, and polypropylene).
• The employer shall have each synthetic web sling marked
or coded to show
• Name or trademark of manufacturer
• Rated capacities for the type of hitch
• Type of material
• Rated capacity shall not be exceeded
• Synthetic webbing (nylon,
polyester, and polypropylene)
• Remove from service
• Acid or caustic burns
• Melting or charring of any
• part of the sling surface
• Snags, punctures, tears
• or cuts
• Broken or worn stitches
• Distortion of fittings
Load = 120,000 pounds
4 load legs ÷ 120,000 equals
30,000 pounds each leg if vertical
Sling legs are 20 feet
Height from top of load to lifting
device is 15 feet
20 ÷ 15 = 1.33
Load on each leg is 1.33 x 30,000
= 40,000 pounds
49. Center of Gravity
A load is stable when:
– The hook is directly above the center of
gravity of the load
Estimate the center of gravity
Lift the load just enough to clear the
If the hook is not over the center of gravity
the hook will travel to the center of gravity
50. Center of Gravity
If necessary, set the load down and adjust the rigging
If the load tips more than 3°, the rigging should be adjusted
The longer the sling legs, the more stable the load will be
The longer set of sling
legs (B) will improve
51. PREVENTIVE MEASURES TO CONTROL THE SPREAD OF CORONAVIRUS
Stay home if you can and avoid gatherings of more than ten people.
Practice social distancing by keeping a distance of about six feet from
others if you must go out in public.
Wash your hands often with soap and water for at least 20 seconds,
especially after being in a public place, or after blowing your nose,
coughing or sneezing. If soap and water are not readily available, use
a hand sanitizer with at least 70% alcohol.
Avoid touching your eyes, nose or mouth with unwashed hands.
Avoid close contact with people who are sick.
Stay home if you are sick, except to get medical care.
Cover your nose and mouth with a tissue when coughing or sneezing;
throw used tissues in the trash. If a tissue isn’t available, cough or
sneeze into your elbow or sleeve, not your hands.
Clean and disinfect frequently touched surfaces daily. This includes
tables, doorknobs, light switches, handles, desks, computers,
phones, keyboards, sinks, toilets, faucets and countertops.
If surfaces are dirty, clean them - use detergent or soap and water
prior to disinfection.
Wear a facemask if you are sick. You should wear a facemask when
you are around other people (e.g., sharing a room or vehicle) and
before you enter a healthcare provider’s office.
Rapidly mutating pathogen and since
“Vaccination is compulsory to prevent
the severity of infection.
Deadly animal virus after SARS and