Material Handling safety as per standard_050449.ppt

Material handling safety

1. Rigging Hazard AwarenessRigging Hazard Awareness
Between the trolley hook and the load is Between the trolley hook and the load is
RIGGINGRIGGING
Ropes, Slings, ChainsRopes, Slings, Chains
Slings inspected daily Slings inspected daily
Proper storage when not in useProper storage when not in use
Suitable protection of rigging when in use (items Suitable protection of rigging when in use (items
with sharp corners, etc..)with sharp corners, etc..)

2. Rules for Rigging SafetyRules for Rigging Safety
Know the weight of the loadKnow the weight of the load
Know the center of gravity of the load.Know the center of gravity of the load.
Make load attachment above the center of Make load attachment above the center of
gravity of the load.gravity of the load.
Select hitch that will hold and control.Select hitch that will hold and control.
Know the rated capacity of slings and Know the rated capacity of slings and
hardware.hardware.

3. Rules for Rigging SafetyRules for Rigging Safety
Select sling best suited for load.Select sling best suited for load.
Inspect all rigging before the lift.Inspect all rigging before the lift.
Protect sling from sharp surfacesProtect sling from sharp surfaces
Proper calculation of increased tension Proper calculation of increased tension
caused by sling angles (on all rigging caused by sling angles (on all rigging
components!).components!).

4. Rules for Rigging SafetyRules for Rigging Safety
Allow for D/d ratio on all wire rope slings.Allow for D/d ratio on all wire rope slings.
Calculate reductions when using choker Calculate reductions when using choker
hitch. hitch.
Keep personnel clear from lift area.Keep personnel clear from lift area.
Lift load a few inches then check riggingLift load a few inches then check rigging
Know limitations of all lifting devices used.Know limitations of all lifting devices used.
Lift slowly and stop slowlyLift slowly and stop slowly

5. Rigging equipment for material Rigging equipment for material
handling handling
Rigging equipment inspections (By a
Competent Person)
–Prior to use on each shift
–As necessary during its use to ensure that it is
safe
–Defective rigging equipment removed from
service
Not be loaded in excess of its
recommended safe working load

6. Rigging equipment for material Rigging equipment for material
handling handling
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 working loads
–Be proof-tested prior to use to 125 percent of
their rated load

7. Rigging equipment for material Rigging equipment for material
handling handling
Alloy steel chains Alloy steel chains
Welded alloy steel chain Welded alloy steel chain
slingsslings
– Permanently affixed Permanently affixed
durable identification durable identification
stating stating
SizeSize
GradeGrade
Rated capacityRated capacity
Sling manufacturerSling manufacturer

8. Rigging equipment for material Rigging equipment for material
handlinghandling
Alloy steel chains Alloy steel chains
Job or shop hooks Job or shop hooks
and links, or and links, or
makeshift fasteners, makeshift fasteners,
formed from bolts, formed from bolts,
rods, etc., or other rods, etc., or other
such attachments, such attachments,
shall not be usedshall not be used

9. Rigging equipment for material Rigging equipment for material
handlinghandling
Four grades:Four grades:
–Grade 28 General Utility ChainGrade 28 General Utility Chain
–Grade 43 High Test ChainGrade 43 High Test Chain
–Grade 70 Binding ChainGrade 70 Binding Chain
–Grade 80 Alloy Steel Chain: The Grade 80 Alloy Steel Chain: The only only one used for one used for
overhead liftingoverhead lifting
G 80

10. Rigging equipment for material Rigging equipment for material
handling handling
Alloy steel chainsAlloy steel chains
Inspections Inspections
–Frequent
Visual examination by the user
Periodic
–Complete link by link inspection of the entire sling and all
attachments.
–Documented

11. Rigging equipment for material Rigging equipment for material
handlinghandling
Alloy steel chainsAlloy steel chains
CP inspections made & based onCP inspections made & based on
–Frequency of sling use; Frequency of sling use;
–Severity of service conditions; Severity of service conditions;
–Nature of lifts being made; and Nature of lifts being made; and
–Experience gained on the service life of slings Experience gained on the service life of slings
used in similar circumstances.used in similar circumstances.
Such inspections at least once a yearSuch inspections at least once a year
Documented & availableDocumented & available

12. Rigging equipment for material Rigging equipment for material
handling handling
Wire rope slingsWire rope slings
Protruding ends of strands in splices on Protruding ends of strands in splices on
slings and bridles covered or blunted slings and bridles covered or blunted
Wire rope shall not be secured by knotsWire rope shall not be secured by knots
Except for eye splices in the ends of wires Except for eye splices in the ends of wires
and for endless rope slings, each wire and for endless rope slings, each wire
rope used in hoisting or lowering, or in rope used in hoisting or lowering, or in
pulling loads, shall consist of one pulling loads, shall consist of one
continuous piece without knot or splice continuous piece without knot or splice

13. Rigging equipment for material Rigging equipment for material
handlinghandling
Mechanical Splice

14. Rigging equipment for material Rigging equipment for material
handlinghandling
Hand Tucked Eye Splice

15. Rigging equipment for material Rigging equipment for material
handlinghandling
Swaged Forged Eye

16. Rigging equipment for material Rigging equipment for material
handlinghandling
Mechanical Splice
Illegal Pig Tail

17. Rigging equipment for material Rigging equipment for material
handlinghandling
Wire rope slingsWire rope slings
Shall not be shortened with knots or bolts Shall not be shortened with knots or bolts
or other makeshift devices. or other makeshift devices.
Legs shall not be kinkedLegs shall not be kinked
Basket hitch shall have the loads balanced Basket hitch shall have the loads balanced
to prevent slippageto prevent slippage
Padded or protected from the sharp edges Padded or protected from the sharp edges

18. Rigging equipment for material Rigging equipment for material
handlinghandling
Wire rope Wire rope
Hands or fingers shall not be placed Hands or fingers shall not be placed
between the sling and its load while the between the sling and its load while the
sling is being tightened around the loadsling is being tightened around the load
A sling shall not be pulled from under a A sling shall not be pulled from under a
load when the load is resting on the slingload when the load is resting on the sling

19. Rigging equipment for material Rigging equipment for material
handlinghandling
D
d
D/d Ratio
D - is diameter around
which sling is bent.
d - is diameter of the
sling.

20. Rigging equipment for material Rigging equipment for material
handlinghandling
When U-bolt wire When U-bolt wire
rope clips used to rope clips used to
form eyesform eyes
–U-bolt shall be applied U-bolt shall be applied
so that the "U" section so that the "U" section
is in contact with the is in contact with the
dead end of the rope dead end of the rope
““Never saddle a dead horse”Never saddle a dead horse”

21. Rigging equipment for material Rigging equipment for material
handlinghandling
Synthetic webbing (nylon, polyester, and Synthetic webbing (nylon, polyester, and
polypropylene). polypropylene).
–The employer shall have each synthetic web The employer shall have each synthetic web
sling marked or coded to show sling marked or coded to show
Name or trademark of manufacturer Name or trademark of manufacturer
Rated capacities for the type of hitch Rated capacities for the type of hitch
Type of material Type of material
Rated capacity shall not be exceeded Rated capacity shall not be exceeded

22. Rigging equipment for material Rigging equipment for material
handlinghandling
Synthetic webbing (nylon, polyester, Synthetic webbing (nylon, polyester,
and polypropylene) and polypropylene)
Remove from service immediately if: Remove from service immediately if:
–Acid or caustic burns Acid or caustic burns
–Melting or charring of any Melting or charring of any
part of the sling surface part of the sling surface
–Snags, punctures, tears Snags, punctures, tears
or cuts or cuts
–Broken or worn stitches Broken or worn stitches
–Distortion of fittings Distortion of fittings

23. Rigging equipment for material Rigging equipment for material
handlinghandling
Shackles and hooks Shackles and hooks
–Manufacturers’ identificationManufacturers’ identification
–Never weld on hooks or shacklesNever weld on hooks or shackles
–Working safety latch on hooksWorking safety latch on hooks

24. Rigging equipment for material Rigging equipment for material
handlinghandling
Recommended
Not
Recommended
Recommended
Screw Pin Anchor
Shackle
Round Pin Anchor
Shackle
Bolt Type Anchor
Shackle

25. Rigging equipment for material Rigging equipment for material
handlinghandling
Never replace a
shackle pin with a bolt.
The load will bend
the bolt.

26. Rigging equipment for material Rigging equipment for material
handlinghandling
Bad Good
Avoid eccentric
loads.
GoodBad
Proper chocking of
shackles.

27. Rigging equipment for material Rigging equipment for material
handlinghandling
Check wear
Check cracks,
bending and
twisting
Check wear and
straightness
Pin always seated
Check opening
width

28. Rigging equipment for material Rigging equipment for material
handlinghandling
Hooks are designed to
apply the load at the
bottom of the saddle.
LOAD

29. Rigging equipment for material Rigging equipment for material
handlinghandling
Check for
Cracks and
Twisting
Check for Wear and Cracks
Check for Wear and
Deformation
Signs of
“Opening Up”
Check that
Hook is Not
Twisted
15% 10º

30. Rigging equipment for material Rigging equipment for material
handlinghandling

31. Rigging equipment for material Rigging equipment for material
handlinghandling
Approximately 70%-80% of a straight pull

32. Rigging equipment for material Rigging equipment for material
handlinghandling
90° basket hitch is approximately twice the capacity of a straight pull

33. Note: A good operating practice is to keep sling angles
from going below 60 degrees
1000 LBS 1000 LBS 1000 LBS 1000 LBS
5
0
0

L
B
S
5
0
0

L
B
S
5
7
7
L
B
S
5
7
7

L
B
S
7
0
7
L
B
S
7
0
7

L
B
S
1000 LBS1000 LBS
90 60° 45° 30°
How horizontal angle How horizontal angle
affects slings capacity affects slings capacity

34. Rigging equipment for material Rigging equipment for material
handlinghandling
Calculating the load on sling legsCalculating the load on sling legs
–Divide the total load by the number of sling Divide the total load by the number of sling
legslegs
–This quotient is the load on each leg if verticalThis quotient is the load on each leg if vertical
–Measure the sling from the load attachment Measure the sling from the load attachment
point, to the point where it connects with the point, to the point where it connects with the
hook or lifting device; this is ‘L’hook or lifting device; this is ‘L’
–Measure the vertical height from the top of the Measure the vertical height from the top of the
load to the hook or lifting device; this is ‘H’load to the hook or lifting device; this is ‘H’
–Divide the length of the leg by the height of Divide the length of the leg by the height of
the slingthe sling

35. LOAD
L
H
Load  Number of legs) X (L  H) = Load each sling leg

36. ExampleExample
Load = 120,000 poundsLoad = 120,000 pounds
4 load legs ÷ 120,000 4 load legs ÷ 120,000
equals 30,000 pounds equals 30,000 pounds
each leg if vertical hitcheach leg if vertical hitch
Sling legs are 20 feetSling legs are 20 feet
Height from top of load to Height from top of load to
lifting device is 15 feetlifting device is 15 feet
20 ÷ 15 = 1.3320 ÷ 15 = 1.33
Load on each leg is 1.33 x Load on each leg is 1.33 x
30,000 = 40,000 pounds30,000 = 40,000 pounds
20'
15'
120,000 lb.

37. Center of GravityCenter of Gravity
A load is stable when:A load is stable when:
–The hook is directly above the center of gravity of The hook is directly above the center of gravity of
the loadthe load
Estimate the center of gravityEstimate the center of gravity
Lift the load just enough to clear the groundLift the load just enough to clear the ground
If the hook is not over the center of gravity the If the hook is not over the center of gravity the
hook will travel to the center of gravityhook will travel to the center of gravity
CG?

38. Center of GravityCenter of Gravity
If necessary, set the load down and adjust the If necessary, set the load down and adjust the
riggingrigging
If the load tips more than 3°, the rigging should If the load tips more than 3°, the rigging should
be adjustedbe adjusted
The longer the sling legs, the more stable the The longer the sling legs, the more stable the
load will beload will be
The longer set of sling
legs (B) will improve
load stability
B
A

39. Disposal of waste materials Disposal of waste materials
Materials are dropped more than 20 feet to Materials are dropped more than 20 feet to
any point lying outside the exterior walls of any point lying outside the exterior walls of
the building the building
–enclosed chute enclosed chute

40. Disposal of waste materialsDisposal of waste materials

41. Disposal of waste materialsDisposal of waste materials

42. Disposal of waste materialsDisposal of waste materials
Debris dropped through holes in the floor Debris dropped through holes in the floor
without the use of chutes without the use of chutes
–Completely enclosed with barricades not less Completely enclosed with barricades not less
than 42 inches high than 42 inches high
–Not less than 6 feet back from the projected Not less than 6 feet back from the projected
edge of the opening above edge of the opening above
–Signs warning of falling materials shall be Signs warning of falling materials shall be
posted at each levelposted at each level
– Removal shall not be permitted in this lower Removal shall not be permitted in this lower
area until debris handling ceases abovearea until debris handling ceases above

43. Disposal of waste materialsDisposal of waste materials
Scrap lumber, waste material, and rubbishScrap lumber, waste material, and rubbish
–Removed from the immediate work area as the work Removed from the immediate work area as the work
progresses. progresses.
Disposal of waste material or debris by burning Disposal of waste material or debris by burning
–Comply with local fire regulations Comply with local fire regulations
All solvent waste, oily rags, and flammable All solvent waste, oily rags, and flammable
liquids liquids
–Kept in fire resistant covered containers until removed Kept in fire resistant covered containers until removed
from worksitefrom worksite

44. QuestionsQuestions