Post on 02-Jun-2018
8/10/2019 Crane & Rigging Safety
1/38
Al Ehsaa Housing Project
1
Health Safety Environment
8/10/2019 Crane & Rigging Safety
2/38
Al Ehsaa Housing Project
2Health Safety Environment
TITLE
8/10/2019 Crane & Rigging Safety
3/38
Al Ehsaa Housing Project
3Health Safety Environment
Elements of a Lifting Plan
The lifting plan shall include but not be limited to the following considerations:
The personnel required
The personnels roles, responsibilities and competencies
Compliance to statutory requirements and manufacturer's operation
manual for the lifting equipment
Permit-to-Worksystem which is mandatory for all lifting operations.
Nature and weight and dimension of loadincluding the NET and
GROSS weights.
Type and location of lifting/ rigging points.
Selection of appropriate liftingequipment, liftinggear and appliances.
Application of the correct liftingmethods
Position of liftingequipment, personnel and of the load, before and after the lift
operation.
8/10/2019 Crane & Rigging Safety
4/38
Al Ehsaa Housing Project
4Health Safety Environment
Elements of a Lifting Plan
The work site operation including proximity of other lifting equipment and work
activities.
Requirements to erect / dismantle the lifting equipment.
Assessment of the need for tagline to control movement of the suspended load.
Means of communication during lifting operations.
Environmental factors detrimental to the lifting operations such as ground
conditions, adverse weather, wind, and poor illumination.
Ensuring a system for reporting any defects is in place.
Provision of a safe place of work for all personnel during lifting operations.
Separate the lifting area with proper barricades and signboard to avoid
unauthorized entry.
8/10/2019 Crane & Rigging Safety
5/38
Al Ehsaa Housing Project
5Health Safety Environment
Key Factors of a Lifting Plan
Key Factors of aLifting Plan
Details of
Load
Details of
Lifting Equipment
Means of
Communication
Personnel Involved
Physical &
Environmental Factors
Key Factors of aLifting Plan
8/10/2019 Crane & Rigging Safety
6/38
Al Ehsaa Housing Project
6Health Safety Environment
Weight of Load
h
l
Volume
= l x b x h
Rr
L
Volume =
3.14 X L X ( R2 - r2)
Weight
=Volume X density
Weight
=Mass X Gravity (9.8m/s2)
8/10/2019 Crane & Rigging Safety
7/38
Al Ehsaa Housing Project
7Health Safety Environment
Center of Gravity
The point at which the entire weight of a body
may be considered as concentratedso that if
supported at this point the body would remain in
equilibriumin any position
Center of Gravity
12 M GRP
8/10/2019 Crane & Rigging Safety
8/38
Al Ehsaa Housing Project
8Health Safety Environment
Center of Gravity
Center of Gravity
10 Ton
Ton5Ton 78 543265 5643 782
8/10/2019 Crane & Rigging Safety
9/38
Al Ehsaa Housing Project
9Health Safety Environment
Selection of Cranes
Weights and dimensions of loads
Height of lift and distance / areas of movement of loads
Number and frequency of lifts
Period of time for the lifting operation
Ground Conditions
Other Factors
8/10/2019 Crane & Rigging Safety
10/38
8/10/2019 Crane & Rigging Safety
11/38
Al Ehsaa Housing Project
11Health Safety Environment
Working Zone
*31m
* Reading are notexact value
8/10/2019 Crane & Rigging Safety
12/38
Al Ehsaa Housing Project
12Health Safety Environment
Major Hazards
Collision with Obstacles
Overturning of the Crane
Breaking the Boom
Falling Objects
Touching the Overhead
Power line
Minimum Clearance Distance Table
Voltage Minimum ClearanceDistance in Feet
Upto 50 (kV) 10
Over 50 to 200 15
Over 200 to 345 20
Over 345 to 500 25
Over 500 to 750 35
Over 750 to 1,000 45
Safe Distance from Power line
8/10/2019 Crane & Rigging Safety
13/38
Al Ehsaa Housing Project
13Health Safety Environment
Lifting Equipments
8/10/2019 Crane & Rigging Safety
14/38
Al Ehsaa Housing Project
14Health Safety Environment
Web Sling - WLL
WLL- Working Load Limit
8/10/2019 Crane & Rigging Safety
15/38
Al Ehsaa Housing Project
15Health Safety Environment
Communication - Hand Signals
8/10/2019 Crane & Rigging Safety
16/38
Al Ehsaa Housing Project
16Health Safety Environment
Rigging Team
Lifting
Supervisor
Rigger
Signal
PersonFlag Man
Trained
Workers
CraneOperator
Lifting
Coordinator
8/10/2019 Crane & Rigging Safety
17/38
Al Ehsaa Housing Project
17Health Safety Environment
Environmental Factors
Wind
Weather
Visibility
Object Temperature
Chemical Conditions and Exposure
Stability of the Ground
Underground Utilities
8/10/2019 Crane & Rigging Safety
18/38
Al Ehsaa Housing Project
18Health Safety Environment
Safe Lifting
Safe Lifting MethodsTurnbuckles
8/10/2019 Crane & Rigging Safety
19/38
Al Ehsaa Housing Project
19Health Safety Environment
Rigging Factors
Key Factors of aLifting Plan
Load Weight
Weight
Distribution
Adequate
Sling Length
Center of
Gravity
Rigging Factors
Positive Load
Engagement
Load
Control
8/10/2019 Crane & Rigging Safety
20/38
Al Ehsaa Housing Project
20Health Safety Environment
Equipment & Lift Criteria
Single or Multiple Crane
Maximum Planned Operating Radius
Allowable Load ( From Load Chart )
Ratio of Lift to Allowable Load
Clearance between Boom & Lift
Clearance to Surrounding Facilities
Power Lines & Environmental hazards
Ensure a Clear Load Path
Emergency Set Down Area
Thorough Equipment Inspection
8/10/2019 Crane & Rigging Safety
21/38
Al Ehsaa Housing Project
21Health Safety Environment
Rigging Considerations
Sling Selection : Type & Capacity
Load Control
Lift point over the center of gravity
Appropriate Hitch for CG and Load Control
Coordination of Multiple Sling
Positive Sling to Load Engagement
Friction : Sling to load
Load is free to move & is not snagged
Sling capacity is Adequate ( Angle and Tension )
Adequate Sling protection.CG- Center of Gravity
8/10/2019 Crane & Rigging Safety
22/38
Al Ehsaa Housing Project
22Health Safety Environment
Safe Working Load ( SWL )
Stated as the Normal Working Load (NWL) is the load that a piece of lifting
equipment, lifting device or accessory can safely utilize to lift, suspend, or lower a
mass without fear of breaking. Usually marked on the equipment by the
manufacturer and is often 1/5 ( 5 : 1) of the Minimum Breaking Strength (MBS)
although other fractions may be used such as 1/4, 1/6 and 1/10
Load represents a force that is much less than that required to make the lifting
equipment fail or yield, also known as the Minimum Breaking Load (MBL).
SWL or WLL = MBL( Minimum Breaking Load )
SF(Safety Factor) .
lbf = Pound-Force
kN= Kilo Netwon
8/10/2019 Crane & Rigging Safety
23/38
Al Ehsaa Housing Project
23Health Safety Environment
Sling Angle Factor
The Sling Angle Factor is a multiplier used to
determine the required sling size when angleformed between sling and load is less than 90o
Avoid rigging loads where angle is less than 45
o
90o 60o 45o
b
ca
Angle
=Sin-1 (a/c)
Click to
Calculate
Angle
8/10/2019 Crane & Rigging Safety
24/38
Al Ehsaa Housing Project
24Health Safety Environment
5
10
15
20
25
30
35
40
45
50
5560
6570758085908580
7570
6560
55
50
45
40
35
30
25
20
15
10
5
Sling Angle Tension Factor Remarks
90o 1.000
GOOD
85o 1.004
80o 1.015
75o 1.035
70o 1.064
65o 1.104
60o 1.155
55o 1.221
CAUTION
50o 1.305
45o 1.414
40o 1.55
WARNIN
G35o 1.742
30o 2.000
25o 2.364
DANGER20o 2.924
15o 3.861
10o 5.750
5o 11.49
CenterofGravity
Sling Angle Tension Factor
8/10/2019 Crane & Rigging Safety
25/38
8/10/2019 Crane & Rigging Safety
26/38
Al Ehsaa Housing Project
26Health Safety Environment
25
30
3540
45
50
5560
6570
7580859085807570
6560
55
50
45
40
35
30
25
Sling Angle Loss Factor Remarks
90o 1.000
GOOD
85o 0.9962
80o 0.9848
75o 0.9659
70o 0.9397
65o 0.9063
60
o
0.866055o 0.8192
CAUTION
50o 0.7660
45o 0.7071
40o 0.6428
WA
RNING
35o 0.5736
30o 0.5000
25o 0.4226
DANGER
CenterofGravity
Sling Angle Reduction Factor
8/10/2019 Crane & Rigging Safety
27/38
Al Ehsaa Housing Project
27Health Safety Environment
Load of Capacity -%
100%99.6%98.5%
96.6%
94.0%
90.6%
86.6%
81.9%
76.6%
70.7%
64.3%
57.4%
50.0%50.0%
57.4%
64.3%
70.7%
76.7%
81.9%
86.6%
90.6%
94.0%
96.6%98.5%
99.6%
30
35
40
45
50
55
60
65
7075
8085908580
7570
65
60
55
50
45
40
35
30
Angle
Capacity
CenterofGravity
8/10/2019 Crane & Rigging Safety
28/38
Al Ehsaa Housing Project
28Health Safety Environment
Weight on Slings
P/2=25tons
P/2=25tons
P=50 tons
60o 60o
Weight in Each Sling
= 50 tons / 2
=
25 tons
Force in Sling
= 25 tons / sin 60o =28.87 tons
8/10/2019 Crane & Rigging Safety
29/38
Al Ehsaa Housing Project
29Health Safety Environment
Sling Tension
1lbs= 0.454Kg
( H )
15 ft
3 ft 9 ft
12 ft
8/10/2019 Crane & Rigging Safety
30/38
Al Ehsaa Housing Project
30Health Safety Environment
Tension on Each Sling
8/10/2019 Crane & Rigging Safety
31/38
Al Ehsaa Housing Project
31Health Safety Environment
Testing & Inspection
All testingand examinationof cranes,
lifting equipments must be carried out
by competentexaminers and the
regular inspectionscompleted by
competent personnel. All testing,
examination and inspection reports and
certificates shall be properly recorded.
8/10/2019 Crane & Rigging Safety
32/38
Al Ehsaa Housing Project
32Health Safety Environment
Inspection
Right way: Saddle on live end
live line
dead end
Wrong way: clips reversed
Wrong way: clips staggered
8/10/2019 Crane & Rigging Safety
33/38
Al Ehsaa Housing Project
33Health Safety Environment
Anchoring
8/10/2019 Crane & Rigging Safety
34/38
Al Ehsaa Housing Project
34Health Safety Environment
Anchoring
8/10/2019 Crane & Rigging Safety
35/38
8/10/2019 Crane & Rigging Safety
36/38
Al Ehsaa Housing Project
36Health Safety Environment
Lift Calculation
8/10/2019 Crane & Rigging Safety
37/38
Al Ehsaa Housing Project
37Health Safety Environment
Any Question
8/10/2019 Crane & Rigging Safety
38/38
Al Ehsaa Housing Project
38H lth S f t E i t
YOUR SAFETYOUR PASSION
THANK YOU