Safe Material Handling

Material Handling EquipmentMaterial Handling Equipment

http://healthsafetyupdates.blogspot.in/


To provide guidelinesTo provide guidelines

• Handling Materials manuallyHandling Materials manually

• Using moving machinery likeUsing moving machinery like Fork Lift TrucksFork Lift Trucks ConveyorsConveyors Cranes and DerricksCranes and Derricks Tower CranesTower Cranes Overhead and Gantry CranesOverhead and Gantry Cranes Mobile CranesMobile Cranes Passenger Lifts and Material Passenger Lifts and Material HoistsHoists



Associated Hazards

• Poor site layouts

• Falls from Vehicle

• Height Restriction

• Overturning

• Collisions

• Striking people and equipment



Responsibility

Departments

Drivers

Consultants

Contractors



Manual Lifting

• Not to carry loads above capacity

• Loads shall not exceed 50 kg. for men, 20 kg. For women

• Mechanical lifting is preferable

• Safe lifting postures



•Safe lifting posturesSafe lifting postures



Mechanical Lifting

• Trained Drivers and Operators

• Adequately skilled

•No persons below 18 years of age

Who should use ?

Suitable sticker to be pasted on the helmet on trained driver/operator - for easy identification



Which one to use ?

• All lifting machines and lifting

tackles bearing

Identification mark

Safe Working Load

Date of Last test

ANDAND

• Fit for Usehttp://

healthsafetyupdates.blogspot.in/


General Precautions

• The Load is safe and secured while lifting

• Slinging method is proper

• Lifted load not exceeding safe working load

• Load is so slung, that it will not collapse or does

not damage the sling

• No load is unattended when power is on or load

is suspended above machinery

• No person shall ride on the suspended load or

lifting machinery

• All persons shall strictly use helmets and safety

shoes


Material Handling EquipmentMaterial Handling EquipmentFork Lift Trucks

Be provided with Overhead ProtectionBe provided with Overhead Protection

Must be fully insideMust be fully inside Must notMust not

UNSAFEUNSAFE


Material Handling EquipmentMaterial Handling EquipmentFork Lift Trucks

•No attachment shall be incorporated, without taking necessary precautionsNo attachment shall be incorporated, without taking necessary precautions

•Fork-lift should be stableFork-lift should be stable

•If Load is obstructing, drive in reverse gearIf Load is obstructing, drive in reverse gear

•Fork must be kept 15-20 cm above floorFork must be kept 15-20 cm above floor

•Drive at a slow and safe speed, avoid sudden start and stopDrive at a slow and safe speed, avoid sudden start and stop

•Avoid driving over any object lying of the pathAvoid driving over any object lying of the path


Material Handling EquipmentMaterial Handling EquipmentConveyors

11

22

33

Starting Sequence = 3 - 2 - 1

Stopping Sequence = 1 - 2 - 3

Design


Material Handling EquipmentMaterial Handling EquipmentConveyors

• Stop switch at operator’s station and near

motor

•Emergency Switch – pull chord – must be

operative all time

•Proper interlock to start

•Screw conveyors to be guarded to prevent

contact

•Proper guard to be provided, if required to

work below conveyor

•Riding or crossing-over a conveyor is not

allowed

•All pulleys, belt nips, idlers are to be guarded


SAFETY DEVICESSAFETY DEVICES

•HOOK LATCHHOOK LATCH•BOOM LIMIT SWITCHBOOM LIMIT SWITCH•BOOM ANGLE INDICATORBOOM ANGLE INDICATOR•OVER HOIST LIMIT SWITCHOVER HOIST LIMIT SWITCH

Boom Limit Switch

Over Hoist Limit switch

Hook Latch

Boom angle indicator

Material Handling EquipmentMaterial Handling EquipmentCranes and Derricks


Unsafe Practices

Non-Use of Hook Latch

Remedial Measures

Use Hook latch to avoid slings from getting removed

from hook



•A is a point in the Tipping of Crane

•To achieve the stability of Crane the following equation should be satisfied

•Moment about point A

•W1 X L1 + W2 X L2 ≥ W3 X L3

Tipping Axis

STABILITY

L2L1 L3

A

W3W1

W2



• Must comply with the manufacturer’s specification and limitations

•Rated capacity, operating speed and hazard warning shall be pasted clearly

•Standard Hand Signals from authorised person are to be used

•A minimum one distance clearance between swing radius of greatest extension.

•Crane shall be stationed on firm ground when operating

•Cranes must not be operated between sun-set and sun-rise, without adequate

lighting arrangements

•Suitable horns, head lights, side lamps, rear & stop lights and flashing

direction indicator

•Tyre pressure to be maintained correctly always




When traveling up a gradient, the load shall be derricked out

When traveling down a gradient, the load shall be derricked into

Position shall be corrected on reaching the level ground



When leaving crane, operator must

• Lower any suspended load to the ground

• Disengage the clutch

• Engage all safety locks

• Secure boom against high winds

When parking over night, in addition to the above

• Release the load

• Lower the boom to ground

• Provide wheel locks and wheel blocks


Material Handling EquipmentMaterial Handling EquipmentExcept where Electrical Lines are de-energised

In transit with no load and boom lowered

1.2 meters for ≤ 50kV3 meters for > 50kV and ≤ 345 kV4.8 meters for > 345kV and ≤ 750 kV

Minimum clearance between the electric lines and any part of crane

3 meters for ≤ 50kV3 meters plus 1 cm for each 1 kV over 50 kV, for > 50kV

A person shall be designated to observe clearance of the equipment


Material Handling EquipmentMaterial Handling EquipmentWhile working under HT cables

1. Electrical department Representative and Job Supervisor MUST

be present through out

2. Written clearance MUST be obtained from

• Electrical Department

• Mechanical Department

• Safety Officer

Any overhead wire shall be considered to be an energized line unless and until the person owning such line or electrical utilities authority indicates that it is not an energized line and has been visibly grounded.


Material Handling EquipmentMaterial Handling EquipmentTower Cranes

• Tower cranes shall be erected, jumped or dismantled under the direct supervision of a competent person, in accordance with the manufacturer’s specification.

• A Professional engineer shall certify that the crane foundation and underlying soil are adequate to support

• Tower cranes shall be positioned whereby they can swing 360°

• Suitable limit switch is to be installed, if it strikes an object.

• Direct voice communication between the operator and the signal man.

• Operating controls shall be properly marked.

• In installed on existing building or new construction, structural engineer shall certify that the building is designed to withstand the torque and loads.


Material Handling EquipmentMaterial Handling EquipmentTower Cranes

• Capacity chart shall be furnished by crane manufacturer and shall be pasted in operator’s cabin. Chart shall be visible and readable to the operator at the normal operating position.

• shall have adequate overhead protection to the operator

•Access to operator’s cab shall be safe and approved by competent authority.

•For inspection and maintenance, ladders, walkways with railing and fall protection devices must be provided.

• slewing brake must be able to hold the boom and load

•Tower cranes shall not be erected or raised when wind velocity exceed 20 kmph


Material Handling EquipmentMaterial Handling EquipmentOverhead and Gantry Cranes

• The rated load shall be plainly marked on each side of the crane

•Bridge trucks shall be equipped with sweeps, which extend below the top of the rail and project in front of the truck wheel

•Effective audible signal

•An unobstructed passageway of 600 mm width shall be maintained between any part of the lifting appliance and any guard rail, fencing or other nearby fixtures.

•Platforms for crane drivers and signalers shall be sufficient area provided with safe means of access

•Cabins for drivers shall have unrestricted visibility, safe access and weather protected.


Material Handling EquipmentMaterial Handling EquipmentStability of Lifting Appliances

• Adequate precaution to ensure stability of lifting appliance used on a soft or uneven surface or on a slope

•Cranes shall be

•Anchored to the ground or other foundations. Rail Tracks shall not be used as anchorage.

•Securely counter-weighted to prevent over turning

•A diagram of the counter weight indicating the position shall be affixed on the crane

•Anchorage shall be examined by a competent person by applying 1.25 times the rated load. Report of this test shall be maintained at the construction site by the contractor.



Date post:	12-Aug-2015
Category:	Entertainment & Humor
Upload:	reliance
View:	324 times
Download:	3 times

Safe Material Handling

Entertainment & Humor