PPT-SM-RIGGING 2014 1

Copyright © 2014 by PEC Safety Management, Inc.

Rigging Safety

PPT-SM-RIGGING 2014

Rigger Role Assist the crane operator by properly attaching and detaching loads the crane • Know how to safely connect and disconnect loads • Discuss any potentially unsafe lifts with your supervisor • Do not make the lift if the hazardous situation cannot

be resolved • Note unsafe weather

– High sea conditions, high wind conditions, etc. – These conditions make the lift unsafe

PPT-SM-RIGGING 2014

Rigger Role • Use proper hand signals at all times • Know the working load limit (WLL) of sling chains, wire

rope, etc., to avoid overloading the equipment • Understand how to incorporate features such as

unbalanced center of gravity (CG), sling angles, and hitch configurations

• Inspect all equipment for damage and defects before use • Do not use knots; they weaken rope, sling, or line • Double check the connection prior to making the lift

PPT-SM-RIGGING 2014

Pre-lift JSA Anytime an overhead lift is made, workers must perform a JSA • Discuss potential hazards • Discuss any required specialized rigging techniques • Communicate the weight of objects to be lifted • Identify the CG for unusually shaped objects • Verify the capacity of all rigging involved • Discuss any unusual conditions that can affect the safety of

the lift • Verify that all equipment has passed inspection

PPT-SM-RIGGING 2014

Body Positioning • Stay out from under loads • Avoid turning your back to a moving load or block • Have someone spot the block • Keep the crane operator’s line of sight clear • Keep hands, feet, and body clear of pinch points • Make sure the equipment is free to be lifted before

attempting to move the equipment • Make sure you are away from the swing path of the

binder when it is released

PPT-SM-RIGGING 2014

Electrical Lines Electricity can arc to a metal boom or wire without actual contact • Assume all overhead electric lines are energized • Never bring any conductive object within 10 feet

of an unguarded line with a current of 50 kV – Crane booms – Slings – Wires – Taglines

PPT-SM-RIGGING 2014

Electrical Lines As a best practice, stay at least 20 feet away from any unguarded, energized overhead powerlines.

PPT-SM-RIGGING 2014

Personal Protective Equipment PPE that must be worn around rigging operations • Hard hats • Safety glasses • Foot protection

– Steel toe boots – Metatarsal protection

• Hand protection – Wear cotton dot or multi-purpose gloves for rigging – Wear leather gloves to inspect wire ropes

PPT-SM-RIGGING 2014

Slings A sling is a device that attaches the load to the crane block hook • Attach all loads to the crane with a set of

slings • Do not attach loads directly to the crane hook

PPT-SM-RIGGING 2014

Types of Slings

10

Fiber Rope Synthetic

Web Wire Rope Chain

PPT-SM-RIGGING 2014

Sling Inspection Carefully inspect slings for use • Take slings out of service if they are damaged in

any way • If the sling does not have a legible tag, do not use

it • Proof test slings once per year • Replace any damaged slings

PPT-SM-RIGGING 2014

Replacement of Wire Rope Slings

Replace if any of the following conditions occur • Broken wire • 10 randomly distributed broken wires in a lay length • 5 broken wires in one strand of one lay length • 1 or more broken wires within lay length to an end fitting • Kinking

12

PPT-SM-RIGGING 2014

Replacement of Wire Rope Slings

Replace if any of the following conditions occur • Crushed or flattened wire rope • Broken core • Bird cages • Tension breaks from overloading • Corrosion • Heat damage • Abrasion

PPT-SM-RIGGING 2014

Replacement of Chain Slings Replace if any of the following conditions occur • The chain is not grade 8 or 10 alloy • More than 10% wear • Nicks, cracks, breaks • Stretching or bending • Extreme temperatures • Improper functioning of hardware • Missing or illegible tag

PPT-SM-RIGGING 2014

Replacement of synthetic slings Replace if any of the following conditions occur • Significant cuts, tears, and abrasions • Red core fiber is exposed • Heat damage • Busted stitches • Illegible identification • Chemical or UV exposure • Knots of any kind

PPT-SM-RIGGING 2014

Replacement of Polyester Slings Replace if any of the following conditions occur • Missing or illegible tag • Melting, charring, or weld splatter • Holes, tears, cuts, abrasion, or broken stitches • Embedded particles • Knots

PPT-SM-RIGGING 2014

End Attachments and Fittings Make sure end attachments are the right size and capacity for the rope and load • Inspect each end attachment before use

– Corrosion, broken parts, cracks, nicks, distortion, stretching, heat damage, malfunction

PPT-SM-RIGGING 2014

End Attachments and Fittings Make sure end attachments are the right size and capacity for the rope and load

• “Never saddle a dead horse” – Never put the saddle of the wire rope clip on the

dead end of the wire rope – Always put the saddle on the live side of the wire

rope that has the pull on it

PPT-SM-RIGGING 2014

Hand Signals • When verbal communication with the crane

operator is not possible, hand signals must be used

• Use only the ASME standardized hand signals • If the crane operator does not understand the

signals, stop the lift • Review each hand signal on the accompanying

handout

PPT-SM-RIGGING 2014 20

PPT-SM-RIGGING 2014

Taglines A rope attached to the load to offer the rigger control of the load without putting the rigger in a position to be injured • Attach before load is lifted • Should be long enough to protect the riggers • When lifting a heavy or wide load, use two

taglines • Should be strong enough to control the load but be

able to break if they get caught on an object

PPT-SM-RIGGING 2014

Taglines • No knots should be on the tagline • Taglines must be made with nonconductive

material • Watch for pinch points or entrapment and use

taglines to stay out of these danger zones • Preplan the escape route • Never wrap taglines around any part of your

body

PPT-SM-RIGGING 2014

Weight Always determine the exact weight of the load, never estimate • The weight should be marked on the load • The boat should have a bill of lading

stating the weights of equipment • Consult the manufacturer to determine

weight • Use rigging books and calculators as a last

resort • Never guess or estimate the weight of a

load

Knowing the weight of an object is critical to using a lift chart and making a safe lift.

PPT-SM-RIGGING 2014

Center of Gravity • Lifts must be made with the block directly over the

CG or balance point • To determine the CG of asymmetrical objects

– Slowly lift the asymmetrical object a few feet off the ground

– If the load shifts more than 5° it should be landed and re-rigged

• Most loads that are transported offshore will be pre-slung from the dock with the CG determined since this cannot be done on a boat in rough seas

PPT-SM-RIGGING 2014 25

Safety Meeting Quiz: Rigging SafetySign and date this quiz sheet. Circle the letter representing the correct answer to each quiz question below.

Name:©

2014 PEC Safety, Inc.

QUIZ-SM-RIGGING SAFETYREV. JAN.24 2014

Date:Rigging Safety

1. The role of the rigger includes ______________.A. using proper hand signals at all timesB. inspecting all equipment for damage and defects before useC. knowing how to safely connect and disconnect loadsD. all of the above

2. Anytime an overhead lift is made, workers must perform a JSA. A. trueB. false

3. As a best practice, riggers must stay at least _____ feet away from any unguarded, energized overhead power line.

A. 5B. 10C. 15D. 20

4. A sling is a device that attaches the load to the crane block hook. A. trueB. false

5. A. copperB. plasticC. chainD. none of the above

6. Slings must be replaced if there are ____________________.A. broken wiresB. 10 randomly distributed broken wires in a lay lengthC. 5 broken wires in one strand of one lay lengthD. all of the above

7. It is okay to use chain slings that are not grade 8 or 10 alloy.A. trueB. false

8. A. corrosionB. broken partsC. stretchingD. all of the above

9. It is not important for the crane operator to understand the hand signals of the rigger.A. trueB. false

10. A tagline is a rope that attaches to the load to offer the rigger control of the load without putting the rigger in a position to be injured.

A. trueB. false

Safe

ty M

eetin

g Ans

wer K

ey: R

igging

Safe

ty Instructors: The following key shows the answers for the Rigging Safety safety meeting quiz.©

201

4 PE

C S

afet

y, In

c.

KEY-SM-RIGGING SAFETYREV. JAN.24 2014

Rigg

ing Sa

fety

1. D

2. A

3. D

4. A

5. C

6. D

7. B

8. D

9. B

10. A

This is to certify that

has successfully completed thePEC Safety Meeting

Date AwardedInstructor

Rigging Safety