Crane & Sling 1

INDOOR CRANE & SLING SAFETY CORPORATE SAFETY TRAINING

WELCOME

COURSE OBJECTIVES 

Provide an Introduction to Crane and Sling Safety.



Provide Training as Required by OSHA.

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Establish Crane and Sling Safety in Today’s Industry.

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Introduce Basic Safety Concepts and Techniques.



Provide Skills for Operators, Maintenance Workers and Supervisors etc.



Raise Safety to an Appropriate Level of Awareness. Awareness.

COURSE OBJECTIVES 

Provide an Introduction to Crane and Sling Safety.



Provide Training as Required by OSHA.



Establish Crane and Sling Safety in Today’s Industry.



Introduce Basic Safety Concepts and Techniques.



Provide Skills for Operators, Maintenance Workers and Supervisors etc.



Raise Safety to an Appropriate Level of Awareness. Awareness.

COURSE COUR SE ATTEND ATTENDEES EES           

Crane Operators Signal Personnel Rigger Personnel Ground Personnel Safety Committees Affected Employees Employees Corporate Managers Department Managers First Line Supervisors Maintenance Departments Accident Investigation Team Members

BASIS FOR THIS COURSE 

Proper Crane Operation Results in Accident Reduction

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Proper Crane Training Results in Accident Reduction

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Elimination of Workplace Injuries & Illnesses Where Possible

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Reduction of Workplace Injuries & Illnesses Where Possible

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OSHA Safety Standards Require:     

Training Be Conducted Cranes Be Safely Operated A “Safety” Program Be Established Hazards and Precautions Be Explained Job Hazards Be Assessed and Controlled Controlled

APPLICABLE REGULATIONS 29CFR - Safety and Health Standards 1910 - Industrial Safety 179 - Overhead and Gantry Cranes

ACME CRANE

2 TON

JIB CRANE

APPLICABLE REGULATIONS 29CFR - Safety and Health Standards 1910 - Industrial Safety 184 - Slings

VERTICAL

CHOKER HITCH

BASKET HITCH

APPLICABLE REGULATIONS 29CFR - Safety and Health Standards 1926 - Construction Safety 550 - Cranes and Derricks 20 TON CAPACITY

GANTRY CRANE

INDUSTRY CONSENSUS STANDARDS ANSI/ASME* - B-30 Series Safety Requirements for Cranes, Derricks, Hoists, Jacks, and Slings CMAA** - Specifications No. 70 and 74 - Crane Operator’s Manual * American National Standards Institute * American Society of Mechanical Engineers ** Crane Manufacturer’s Association of America

INDUSTRY CONSENSUS STANDARDS ANSI/ASME B- 30.2 Overhead and Gantry Cranes (top running hoist) B- 30.9 Slings B- 30.10 Hooks B- 30.11 Monorail and Underhung Cranes B- 30.13 Storage/Retrieval (S/R) Machines B- 30.16 Overhead Hoists (underhung) B- 30.17 Overhead and Gantry Cranes (underhung hoist) B- 30.18 Stacker Cranes B- 30.21 Manually Lever Operated Hoists

PROGRAM REQUIREMENTS A LL EMPLOYERS MUST: 

Maintain Crane Safeguards.

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Review Job Specific Hazards.

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Implement Corrective Actions.

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Conduct Hazard Assessments.

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Conduct Accident Investigations.

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Provide Training to All Required Employees.

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Control Workplace Hazards Using PPE As a Last Resort.

PROGRAM ELEMENTS PROGRAM ELEMENTS INCLUDE: 

Site Safety Rules.

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Periodic Training.

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Inspection Program.

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Maintenance Program.

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Operating Safety Rules.

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Operator Prequalification.

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Control of Hazardous Energy Sources.

PROGRAM IMPLEMENTATION IMPLEMENTATION OF A CRANE SAFETY PROGRAM REQUIRES: 

DEDICATION



PERSONAL INTEREST



MANAGEMENT COMMITMENT

NOTE: UNDERSTANDING AND SUPPORT FROM THE WORK FORCE IS ESSENTIAL, WITHOUT IT THE PROGRAM WILL FAIL!

PROGRAM IMPLEMENTATION A GOOD PROGRAM WILL HELP: 

Improve Quality.

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Improve Absenteeism.

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Reduce Injury and Illness Rates.

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Maintain a Healthier Work Force.

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Acceptance of High-Turnover Jobs.

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Workers Feel Good About Their Work.

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Reduce Workers’ Compensation Costs.

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Elevate SAFETY to a Higher Level of Awareness.

MANAGEMENT’S ROLE 

Considerations: 1. S u p p o r t the Crane Safety Program. 2. Ensure Your Support Is Visible. 3. Get Involved. 4. A t t e n d t h e Sa m e Tr a i n i n g As Your Workers. 5. Insist on Periodic Follow-up & Program Review. 6. Implement Ways to Measure Effectiveness.

THE SUPERVISOR’S ROLE 

Considerations: 1. Treat All “Near -Misses” As an Accident. 2. Never Ridicule Any Injury or Near Miss. 3. Get Inv olv ed in Crane Safety. 4. C o m p l e t e t h e P ap e r w o r k (Work Orders, Policy Changes, Etc.) To Affect Repairs or Improvements. 5. Get Your Workers Involved. 6. Be Professional - You Could Save a Life Today. 7. A t t e n d t h e S am e Tr a i n i n g As Your Workers. 8. F o l l o w - u p on the Actions You Took.

THE EMPLOYEE’S ROLE 

Considerations: 1. R e p o r t All Accidents and Near-Misses Immediately. 2. C o n t r i b u t e to Make Corrective Actions. 3. Always Provide Complete and Accurate Information. 4. Report All Crane Safety Problems or Deficiencies. 5. F o l l o w - u p With Any Additional Information.

SAFETY COMMITTEE 

Safety Committees Should: 

Hold Regular Accident Review Meetings.

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Document Meetings.

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Encourage Employee Involvement.

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Bring Employee Complaints, Suggestions, Concerns to the Attention of Management.

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Provide Feedback Without Fear of Reprisal.

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Analyze Statistical Data Concerning Accidents, and Make Recommendations for Corrective Action.

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Follow-up Is Critical.

or

TYPES OF CRANES AND HOISTS

ACME CRANE

2 TON

INDOOR BRIDGE CRANE

TYPES OF CRANES AND HOISTS 20 TON CAPACITY

GANTRY CRANE


ACME CRANE

2 TON

JIB CRANE


ACME CRANE

2 TON

MONORAIL CRANE

INSPECTION, TESTING & MAINTENANCE 

Documentation: 1. Identify items that were inspected. 2. Show the status of the inspected items. 3. Provide the signature of the inspector. 4. Show the date. 5. File it and maintain it!

REVIEW THE MANUFACTURERS SPECIFIC INSPECTION REQUIREMENTS!

INSPECTION CHECKLIST FOR CRANES


Start of Each Shift: 1. Visually Inspect all units for integrity, leaks etc. 2. Check the operation of the crane; controls & movement. 3. Operate empty hook till it actuates the upper limit switch. 4. Operate hoist and trolley brakes, ensure no excessive coasting. 5. Check for twisted, broken or kinked cables or chains. 6. Observe correct drum spooling as the hook is raised. 7. Inspect for deformed, cracked, or stretched hooks. 8. Inspect for serviceable safety latches. 9. Check for air or hydraulic fluid leakage. 10. Check for load capacity stenciling on both sides of unit.



Monthly Inspections: 1. Visually Inspect all critical items. 2. Measure hooks for deformation or stretching. 3. Inspect hooks for cracks, missing or broken parts. 4. Measure lifting chains for excessive stretch, twisting etc. 5. Inspect for twisted, broken or kinked cables or chains. 6. Follow any additional recommendations of the manufacturer.



Periodic Inspections (1 to 12 Month Intervals): 1. Interval dependant on the type of activity performed. 2. Interval dependant on the severity of service. 3. Interval dependant on the environmental conditions. 4. As a minimum the inspection should cover: Chain or cable Electrification Brakes Rails Warning Devices

Reeving Hoist Drives Limit Switches Balance End Stops

Hook Condition Travel Drives Couplings Controls Signage



Periodic CMAA Inspection Recommendations:

Class A B C D E F

Description

Typical Schedule

Standby or infrequent service Light service - 2-5 lifts hr. Moderate service - 50% capacity, 5-10 lifts hr. Heavy service - 50% capacity, 10-20 lifts hr. Severe service - Near capacity, 20+ lifts hr. Continuous severe service - Near capacity and continuous service throughout day

Annually Annually Annually Semiannually Quarterly Bi-monthly

DIFFERENT CONDITIONS MAY SUGGEST DIFFERENT INTERVA L S.



New Cranes: Prior to initial use, cranes must be tested and inspected completely using the criteria applicable to periodic inspections. A report should be kept on file for future reference.



Idle Cranes: Cranes that have been idle for a period that exceeds six months must be inspected and tested before being placed back in service using the criteria that applies to periodic inspection. Special attention should be given to the hook, lifting chain and wire rope.



Altered Cranes: All cranes that have been extensively altered or repaired must be completely inspected and tested.

If load

sustaining parts have been altered or repaired, then a load test should be conducted to verify the rated load capacity of the crane. A report should be issued by a qualified person and kept on file for future reference.



Load Testing a New Crane: New and rebuilt hoist are load tested by the manufacturer at the factory. Most manufacturers will furnish load test certificates for a nominal charge.



Load Testing a Used Crane: When load testing a used crane, the test load cannot exceed 125 percent of the rated load unless otherwise recommended by the manufacturer. The hoist, trolley and crane should be operated a number of times at various positions. The test load should be transported by the trolley and bridge over the full length of the crane. A report should be issued by the testing organization giving the conditions under which the system was load tested.



Preventive Maintenance Should Cover: 1. 2. 3. 4. 5. 6. 7. 8. 9.

Cleaning and lubricating the wire rope (cable) and load chain. Adjusting the brakes. Checking and filling the gear cases to the proper levels. Replacing any contaminated oils. Lubricating the bearings, gears, pinions, linkages, shafts, etc. Adjusting the operation of limit switches. Cleaning or replacing pitted or burned electrical contacts. Cleaning or replacing the air and fluid filters. Inspecting the operation of all controls and warning systems.



Preoperational Tests - General: 1. Ensure all emergency disconnects are known before any test. 2. If you’re not familiar with the cranes’ operation get help. 3. Ensure that the manufacturers recommendations are followed. 4. If you have a checklist - follow it! 5. Inspect all electrical controls for proper operation. 6. Check for obstructions in the travel path of the crane. 7. Test all controls to determine proper operation. 8. Observe for smooth operation of the components. 9. Never unwind the spool completely! 10. Check upper and lower limit switches.



Preoperational Tests - Hooks: 1. 2. 3. 4. 5. 6.

Replace if deformation or cracks are found. Check for proper function of the safety latch. Inspect for twists from the plane of the unbent hook. Check for proper swivel. Hook repair is generally not recommended. Emergency hook repair must be performed only under competent supervision. 7. After any hook repairs, the hook must be load tested before being returned to normal service. REVIEW THE MANUFACTURERS SPECIFIC INSPECTION REQUIREMENTS!


Preoperational Tests - Rope: 1. Reduction in rope diameter (replace if found). 2. Broken or worn outside wires. 3. Corroded or broken wires at end of connections. 4. Severe kinking, crushing, cutting or unstranding. 5. Corroded, cracked, bent, worn, or improperly applied end connections.



Lock-Out Tag-Out Considerations: 1. Review requirements for the individual crane. 2. Integrate lock out and maintenance requirements. 3. Ensure training in adequate for level of maintenance.

DANGER LOCKED OUT DON’T OPERATE This Lock/Tag may only be removed by NAME: __________ DEPT : __________ COMPLETION DATE: ___________ TIME: ____________

4. Ensure written programs are established and reviewed. 5. Carefully select lockout devices, ask the manufacturer for recommendations. 6. Do not necessarily assume devices are interchangeable between different types of cranes. REVIEW THE MANUFACTURERS SPECIFIC INSPECTION REQUIREMENTS!

BASICS OF CRANE SAFETY KNOW THE RATED LOAD OF THE CRANE

ACME CRANE

10 TON CAPACITY

2 TON

10 TON CAP.

10 TON

ALWAYS CHECK LOAD RATING

BASICS OF CRANE SAFETY KNOW THE RATED LOAD OF THE CRANE

5 TON 2 TON

10 TON LOAD

ALWAYS ENSURE THE LIFTING DEVICE AND ALL SUPPORTING COMPONENTS ARE RATED FOR THE LOAD TO BE LIFTED!

BASICS OF CRANE SAFETY ACME CRANE

NEVER ALLOW A COWORKER BETWEEN A FIXED OBJECT AND A LOAD! 2 TON

DANGER

WORKING CRANES

BASICS OF CRANE SAFETY THINK BEFORE YOU LIFT

ACME CRANE

ALWAYS POSITION LIFTING DEVICE DIRECTLY OVER LOAD BEFORE LIFTING! 2 TON

BASICS OF CRANE SAFETY KNOW YOUR SAFE WORKING RADIUS Always Ensure That You Know the Safe Travel Radius of the Crane. Contact With Electrical Sources or Other Hazards Can Result in Catastrophic Consequences.

BASICS OF CRANE SAFETY DISSIPATE ALL HAZARDOUS ENERGY

ACME CRANE

Always Ensure Energy Sources Are Dissipated Before Initiating Any Maintenance Activity.

2 TON

DANGER

HIGH VOLTAGE

BASICS OF CRANE SAFETY Lifting operations are inherently dangerous. Even when proper training is conducted, Equipment is properly maintained, Employees conduct themselves in a safe manner, and other facets of the safety program are conscientiously attended to, accidents can still occur. The reason is that crane operations are primarily dependant on mechanical devices. These devices can and do fail. When this happens during a lifting event the results can be catastrophic. You are the only controlling influence that can minimize the hazard. Your life literally is in your own hands!

BASICS OF CRANE SAFETY Physical and Mental Requirements of Operators:         

No history of unsafe acts in the workplace. Have a mature and safe attitude at all times. The ability to react quickly in an emergency. Drug and alcohol free during any lifting event. Good depth perception (essential for load spotting). Good hearing and vision (corrected or uncorrected). Be thoroughly trained in all facets of the required lift. Understand the requirements for all phases of the lift. Taking no medication that will interfere with the operation.

BASICS OF CRANE SAFETY Safe Practices for Operators: 

Test all hoist controls and brakes at the beginning of each shift.

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Never attempt to operate a crane or hoist that is suspected to be unsafe.

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Always test brakes by a short lift to ensure control.

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Move loads only after being signaled by the designated, qualified signaler.

BASICS OF CRANE SAFETY Safe Practices for Operators (continued) 

Never carry loads over workers.

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Never carry loads past workers (they must yield right of way) .

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Signalers must keep line-of-sight with the operator.

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Never allow riders on loads or hooks.

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Never allow unauthorized persons to operate cranes.

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Always lockout before maintenance or repairing cranes.

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Frequently inspect cranes exposed to adverse conditions.

BASICS OF CRANE SAFETY Safe Practices for Operators (continued)        

Always position the hook directly over the load before lifting the load off of the floor. Document and maintain inspection records. Check warning devices and signals before use. Signalers must watch the load. Operators must watch the signalers. Know your travel path in advance of the lift! Know where you’re going to set the load down! Will the new location support the weight?

BASICS OF CRANE SAFETY Safe Practices for Signalers 

Only one person is the designated signaler.

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Maintain line-of-sight with the operator.

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Ensure the operator acknowledges every signal.

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Stop the operation if comprehension is lost.

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Operators must watch the signalers.

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Plan in advance where the load is going!

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Know the new location will support the weight.

BASICS OF CRANE SAFETY Leaving or Parking Hoists or Cranes 

Raise all hooks to - but not through - limit switches.

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Place all controls in the “off” position.

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Place main power switch in the “off” position.

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Make a visual check for any dangerous condition.

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Report any defects immediately.

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Tag out defective equipment immediately.

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Report all cranes that are not in operation immediately.

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Follow the manufacturer’s recommendations.

HANDLING THE LOAD Lifting Factors     

Size, Weight, and Center of Gravity of the Load. The Number of Sling Legs. The Angle the Sling Makes With the Horizontal Line. The Rated Capacity of the Sling. The History of the Care and Usage of the Sling.

HANDLING THE LOAD Lifting Factors  Size,

Weight, and Center of Gravity of the Load.

To make a level lift, the crane hook must be directly above the center of gravity point. If the crane hook is too far to one side of the center of gravity, dangerous tilting and unequal stress to the sling leg will result.

HANDLING THE LOAD Lifting Factors 

Number of Legs and Angle with the Horizontal. As the angle formed by the sling leg and the horizontal line decreases, the rated capacity of the sling also decreases.

1000lb

1000lb

1000lb


Rated Capacity of the Sling. The rated capacity varies depending upon the type of the sling, the the size of the the sling, sling, and type of hitch. hitch. Consult with the the manufacturer manufacturer.. Also, older slings slings must must be be used with additional additional caution. Sling charts are generally generally based on new sling usage.


History of Care and Usage. Mishandling and misuse of sling are the leading cause of sling-related accidents. Proper care is essential for maximum service and safety. Always protect slings with cover saddles, burlap padding or wood blocking to prevent sharp bends and cutting edges.

HANDLING THE LOAD Estimating Weight of Load        

Use a Dynamometer. Check shipping papers. Check nomenclature plates. Use industry standard tables or charts. Consult with the equipment manufacturer. Estimate weight using weights of similar loads. Never attempt a load lift based solely on a guess! Stay within 50% of the cranes rated capacity when estimating loads (or manufacturer recommendation). recommendation).

HANDLING THE LOAD Types of Rigging and Slings     

Chains. Wire Rope. Fiber Rope. Synthetic Web. Cargo Nets.

EACH TYPE HAS ADVANTAGES AND DISADVANTAGES!

HANDLING THE LOAD Types of Rigging and Slings

Consult with the sling manufacturer concerning load capacities, usage methods, restrictions and other pertinent data for specific types of slings.

HANDLING THE LOAD Working Rules for Slings         

Never load in excess of the rated capacity. Never use a sling that is damaged in any way. Never pull a sling from a suspended load under tension. Never shorten with knots, bolts or other makeshift devices. Always keep suspended loads clear of employees. Always keep suspended loads clear of all obstructions. Always keep hands and fingers clear of untensioned loads. Always pad or protect slings from sharp edges of the load. Always think before you affect a load.

HANDLING THE LOAD Inspection Procedures for Wire Rope Slings 

Remove from service if you find: 1. 2. 3. 4. 5. 6.

Ten randomly distributed broken wires in one lay. Five broken wires in one strand in one lay. Kinking, crushing, bird caging or any other damage. Evidence of heat damage. Any end attachments cracked, deformed or worn. Hooks that have been opened more than 15% of the normal throat opening or twisted more than 10% from the plane of the unbent hook.

HANDLING THE LOAD Inspection Procedures for Alloy Steel Chain Slings 


Defective or questionable welds. Bending or elongation of chain links. Cracked or deformed master and coupling links. Missing or removed identification tags. Any end attachments cracked, deformed or worn. Any other reason to suspect an unsafe condition.

HANDLING THE LOAD Inspection Procedures for Synthetic Web Slings 


Acid or caustic burns. Age deterioration (drying out cracking etc.). Melting or charring of the sling surface. Snags, tears or cuts causing exposure of colored thread. Missing or removed identification tags. Any other reason to suspect an unsafe condition.

HANDLING THE LOAD After the Lift is Completed:      

Clean the sling. Check for damage. Follow proper storage rules. Leave in proper condition for the next lift. Don’t wait to report damaged or defective slings. Follow proper disposal or replacement procedures.

HANDLING THE LOAD Storage Rules for Slings Store Slings:      

In a dry environment out of direct sunlight. Off of the floor or ground to prevent corrosion. Hung from hooks to prevent tangling and easy access. Away from electrical sources. By type - i.e. don’t mix steel chain slings with synthetics. In a controlled area.

HANDLING THE LOAD Sling Angles:

Consult with the sling manufacturer concerning how sling angles affect load capacities for different types of slings.

1000lb

1000lb

1000lb

HANDLING THE LOAD Sling Angles:     

The angle the sling is hung affects the sling load capacity. The greater the sling angle the greater the stress. Multiple sling usage drastically affects load capacity. The type of sling used is a factor. Consult with the sling manufacturer for proper usage.

1000lb

1000lb

1000lb

HANDLING THE LOAD Sling Angle With Vertical

Stresses Per Sling Leg Per 1000 lbs Total Load

0 5 10 15 20 25 30 35 40 45 50 55 60 80

500 502 508 518 532 552 577 610 653 707 778 872 1000 2880

577lbs

577lbs

30

1000lb 30 Angle


707lbs

707lbs

1000lbs

1000lbs

1000lb

1000lb

45 Angle

60 Angle


500lbs THE USE OF TWO SLINGS, EACH SUPPORTING THE SAME AMOUNT OF WEIGHT AND HAVING THE SAME SUPPORT ANGLE RESULTS IN EQUAL DISTRIBUTION OF THE LOAD WEIGHT.

500lbs

1000lb 0 Angle


A

B

If slings are used as twin slings, the carrying capacity decreases as the spread between the slings increases. To determine the capacity of each sling in a bridle hitch: 1. Measure the distance along one sling for the same number of units as the capacity of the sling in tons (Distance A). 2. Measure the vertical distance from the point located in (1) to the load in tons. (Distance B). 3. The number of units in this vertical distance (B) is the working load for the sling.


A

B

A = 2 ft. (or any unit) (2 Ton Sling Capacity) B = 1.5 ft. Working Capacity of Each Sling = 1.5 Tons Note: The individual sling capacity must be more than half of the total load weight! Consult with the manufacturer for specific types of rigging arrangements

HANDLING THE LOAD Sling Angles:     

The angle the sling is hung affects the sling load capacity. The greater the sling angle the greater the stress. Multiple sling usage drastically affects load capacity. The type of sling used is a factor. Consult with the sling manufacturer for proper usage.

1000lb

1000lb

1000lb

HANDLING THE LOAD Protecting Slings: Protect Slings Against Sharp Edges

Protect Slings Against Sharp Edges

STANDARD HAND SIGNALS Hoist Load: 

Forearm Vertical  Forefinger Pointing Up Hand in Small  Move Horizontal Circular Motion

STANDARD HAND SIGNALS Lower Load: 

Arm Downward  Forefinger Pointing Down  Move Hand in Small Horizontal Circular Motion

STANDARD HAND SIGNALS Bridge Travel: 

Arm Extended Forward  Hand Open and Slightly Raised  Make Pushing Motion in the Direction of Travel

STANDARD HAND SIGNALS Trolley Travel: 

Rapid, Jerking, Hitch-Hiking Motion in Direction of Travel

STANDARD HAND SIGNALS Stop: 

Arm Extended  Palm Down  Move Arm Sideways, Rapidly Back and Forth

STANDARD HAND SIGNALS Emergency Stop: 

Both Arms Extended  Palms Down  Move Both Arms Sideways Rapidly Back and Forth

PROTECTIVE EQUIPMENT 

Protective Clothing and Equipment Considerations:  Appropriate

for the particular hazard(s)  Maintained in good condition  Properly stored when not in use  Kept clean, fully functional, and sanitary

Crane & Sling 1

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