Rigging and Lifting Slings | Training Tuesday

industrial rigging and lifting sling being sewn

There’s a lot of different terminology and rules to remember about synthetic rigging and lifting slings – but Hercules SLR has you covered. 

When you think of a heavy duty sling, you might wonder why a rigger would choose a synthetic material over something ‘heavy duty’, like chain. They exist for a reason—Some benefits of synthetic rigging and lifting slings include: 

  • Economical
  • Flexible/Easy-to-store
  • Great for applications where steel or wire rope slings could damage a delicate load. 

RIGGING AND LIFTING SLINGS | WHAT THEY’RE MADE OF

Synthetic slings, or textile slings are made out of fabricated materials like nylon or polyester. Colour codes are used to identify the synthetic sling’s material. The colour is identified by a label on rigging and lifting slings – These are: 

  • BLUE: Polyester (ES) 
  • GREEN: Polyamide (PA)
  • BROWN: Polypropylene (PP) 

In terms of their construction, synthetic slings are often known as web slings or round slings. 

RIGGING AND LIFTING SLINGS | SAFETY TIPS

There are many safety tips to keep in mind when lifting with synthetic slings. Here are a few simple safety tips and tricks to keep in mind:

  • Store synthetic slings in a cool, dry place that’s free from exposure to ultra-violet light, like sunlight. 
  • Never pull your sling from under a load 
  • If the tags/labels are unreadable, don’t use the sling 
  • Be careful when using the sling around sharp corners or edges—Sharp corners can tear the synthetic sling 

RIGGING AND LIFTING SLINGS | INSPECTON

Synthetic slings should be inspected on a semi-regular basis. There are three types of inspection you must do with your synthetic sling(s)—These are: 

1) INITIAL INSPECTION

Before using your synthetic sling, a designated person or the user must check the sling to make sure it’s the correct to use for the application, and to ensure the sling meets the manufacturer’s specifications. A designated person is someone who has a recognized degree or certificate in an applicable field (like rigging) or someone who has extensive knowledge, training, experience and has successfully demonstrated the ability to solve or resolve problems that relate to the application.

This inspection should happen whether the sling is new, repaired or altered in any way. 

2) FREQUENT VISUAL INSPECTION 

Whoever is handling the sling, should conduct a visual inspection(s) each time it’s used. Further conditions for frequent visual inspection is:

A) A visual inspection for damage shall be performed by the user or other designated person each date or shift the sling is used. 

B) If the sling has any conditions that could cause hazard, the sling should be removed from service and not returned until it’s been approved by a designated person. 

3) PERIODOC INSPECTION 

Each part of the sling must be inspected individually—Take care to expose and examine all surfaces and individual component. 

Periodic inspections should not exceed one year—Inspect your synthetic sling at least once annually. Inspection frequency is based on how often slings are used, the kind of lifts being made, experience gained on service life of slings and how severe service conditions are.

Severe service conditions are defined as: 

  • Normal service—Yearly
  • Severe service—Monthly to quarterly
  • Special service—This is recommended by a qualified person 

When you inspect your sling, look for these conditions: 

  • Bent or twisted fittings 
  • Chemical damage
  • Crushing or knots 
  • Cuts and broken stitching 
  • Exposed internal cover due to cut or abrasion 
  • Heat damage 
  • Holes, cuts, tears or snags 
  • Missing or illegible sling identification
  • Severe abrasion
  • Twin path tell-tails not extending 1/2″ past the tag area 
  • Ultra-violet ray damage
  • Worn or broken stitching 

rigging and lifting synthetic web slings and orange synthetic round sling

 

 

 

 

 

 

 

 

 

RIGGING AND LIFTING SLINGS | KNOW YOUR ANGLES 

What do we mean when we discuss sling angles? Sling angle is the space where the sling and the horizontal part of the load meet. 

Rated capacity, rated load or working load limit refers to the maximum working load that the sling manufacturer says the sling can hold. The terms ‘rated capacity’ and ‘working load limit’ are commonly used to describe rated load. The angle is important as the sling angle creates tension, which can impact the rated capacity of the sling.

Safe sling angles are typically 45­° greater from the horizontal point of the load. 

When we talk about sling angles, it’s important to talk about sling hitches. Hitches refer to the different way a sling can be applied to a load. The angle of multi-leg slings will effect the rated capacity of the bridle or multi-leg sling.

The most common types of hitches found in rigging are: 

  • VERTICAL: Method of rigging a web sling where the load’s attached to one end of the web sling, and the other end of the web sling is attached to the lifting device. 
  • CHOKER: Method of rigging a web sling in which the web sling is passed around the load, then through itself, then attached to the lifting device. 
  • BASKET HITCH (90°): Method of rigging a web sling where the web sling is passed around the load, and both ends are attached to the lifting device. A method of rigging a sling where it’s passed around the load, then through one loop eye, end fitting, or other device, while the other loop eye or end fitting at the other end is attached to the lifting device. Any hitch less than 5 degrees from the vertical may be considered a vertical hitch. 

The degree of the angle determines the rated capacity of the sling—To find out if a sling has the rated capacity you need for a lift, take the angle between the sling leg and the horizontal, then multiply the sling’s factor. 

As the sling angle decreases, so does the rated capacity. Here’s a chart for example:

SLING ANGLE DEGREES  LOSS FACTOR
90 1
85 0.996
80 0.985
75 0.966
70 0.94
65 0.906
60 0.866
55 0.819
50 0.766
45 0.707
40 0.643
35 0.574
30 0.5

 

RIGGING AND LIFTING SLINGS: OTHER FACTORS THAT REDUCE CAPACITY

It’s important to remember that rated capacities are based on perfect conditions. There are many other factors that reduce capacity. These include:

  • Swing: Suspended loads can swing, which place more dynamic forces on the hoist in addition to the weight of the load. These additional forces (see point below) are difficult to quantify and account for, and could cause tip-over of the crane or failure of hoisting hardware. The force of the swinging causes the load to drift away from the machine, which increases the radius and side-loading on equipment. Keep the load directly below the boom point or upper load block. This is best accomplished by controlling the load’s movement with slow motions. 
  • Condition of equipment: Again, WLL and rated capacities are based on perfect conditions – this includes equipment and hardware. Damaged equipment should be taken out of service immediately. 
  • Dynamic forces: WLL and rated capacities are meant for static loads. Safety factor accounts for the dynamic motions of the load & equipment. 
  • Weight of tackle: Hoisting equipment’s rated capacity doesn’t account for the additional weight of blocks, hooks, slings, equalizer beams and other parts of the lifting tackle. The weight of these accessories combined must be added to the load’s total weight, the capacity of the lifting equipment including design safety factors and should be large enough to account for the extra load to lift. 

RIGGING AND LIFTING SLINGS | TERMINOLOGY 

Read on to discover MORE rigging and lifting sling vocabulary you need to know.

ABNORMAL OPERATING CONDITIONS: Environmental conditions that unfavourable, harmful or detrimental to/or for the operation of a sling, such as excessively high or low ambient temperatures, exposure to weather, corrosive fumes, dust or moisture-laden atmospheres and hazardous locations. 

ABRASION: The mechanical wearing of a surface that results from friction with other materials or objects. 

ANGLE OF CHOKE: Angle that’s formed with in a sling body as it passes through the choking-eye or fittings.

ASSEMBLY: Another word for sling.

AUTHORIZED: Approved by a duly-constituted administrative or regulatory authority.  

BODY (SLING): The part of a sling between the eye(s), end-fittings or loop eyes. 

BRIDLE SLING: A sling composed of multiple legs with the top ends gathered in a fitting that goes over the lifting hook. 

D/d RATIO: The relationship between the curvative upon which the sling is used (D) and the nominal sling diameter (d).

DESIGNATED PERSON: Selected or assigned by the employer or employer’s representative as being competent to perform specific duties.

END-FITTING: Terminal hardware on the end of a sling. See sling

EYE OPENING: The opening in the end of a sling of the attachment of the hook, shackle, or other lifting device or the load itself.

FABRICATION EFFICIENCY: The sling assembly strength, as a percentage of the material strength prior to fabrication.

FITTING: Hardware on the end of a sling, also known as a component

GROMMET SLING: A type of endless sling. 

LENGTH, SLING: The distance between the extreme bearing points of the sling.

SINGLE-LEG SLINGS WITHOUT END FITTINGS: Measured from pull to pull with or from bearing to bearing of eyes.

SINGLE-LEG SLINGS WITH END FITTINGS: Measured from pull to pull of end fittings or eyes. 

LOOP EYE (WEB SLING): A length of webbing that has been that’s been folded back upon itself, forming an opening, and joined to the sling body to form a bearing surface. 

PLY: A Layer of load bearing webbing used in a web sling assembly. 

PROOF LOAD: The specific load applied in performance of the proof tests. 

PROOF TEST:A nondestructive load test made to a specific multiple of the rated load of the sling. 

SPECIAL OR INFREQUENT: Service that involves operation other than normal or severe, which is approved by a qualified person. 

SPIRAL: A single transverse coil that is the basic element from which metal mesh is fabricated.

SPLICE (WEB SLING): The part of the sling that’s lapped and secured to become an integral part of the sling.

ASSEMBLY SPLICE (WEB SLING): Any splice that joins two or more parts of the sling without bearing any of the applied load.

LOAD BEARING SPLICE (WEB SLING): The part of a sling that is lapped and secured to become an integral load bearing part of the sling. 

TRIANGLE CHOKER FITTING: An end-fitting for metal mesh or synthetic web slings; similar to the triangle fitting, except that is also a transverse slot through which a triangle fitting can be passed to facilitate a choker hitch on the load.

TRIANGLE FITTING: An end fitting for metal mesh or synthetic web slings, containing a single eye opening for connecting the sling to the lifting device. 

YARN: A generic term for a continuous strand of fibers. 

WE HOPE THIS HELPS—WHETHER YOU WORK OFFSHORE, IN ENTERTAINMENT OR CONSTRUCTION, THIS HANDY GUIDE TO RIGGING AND LIFTING SLINGS TERMS WILL HELP YOU TALK SLINGING SLANG WITH EASE.

HERCULES SLR RIGS IT RIGHT

NEED A LIFT? HERCULES SLR PROVIDES EQUIPMENT, INSPECTIONS & REPAIRS FOR ALL YOUR RIGGING NEEDS—WE LIFT ANYTHING

INFO@HERCULESSLR.COM  1-877-461-4877


FOR RELATED ARTICLES ON RIGGING AND LIFTING SLINGS,

VISIT OUR BLOG:

POLY-WHAT?! ALL ABOUT SYNTHETIC SLINGS

SYNTHETIC ROUNDSLING—FREE INSPECTION DOWNLOAD GUIDE

HERCULES HOW-TO: SLING INSPECTION CHECKLIST


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Hercules SLR is part of the Hercules Group of Companies. We have a unique portfolio of businesses nationally, with locations coast-to-coast. Hercules Group of Companies provides extensive coverage of products and services that support a variety of sectors across Canada which includes the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, mining and marine industries. 

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

We have the ability to provide any hoisting solution your business or project will need. Call us today for more information. 1-877-461-4876 or email info@herculesslr.com

Welcome to Hamilton, Ontario: Meet Jim Case, Rigger

rigger doing repair at hercules slr

RIGGING WITH OVER 15 YEARS’ EXPERIENCE: JIM CASE INTERVIEW

There’s so much experience to be found at Hercules SLR – today, we sit down with Associate Rigger Jim Case (he has over 15 years’ experience!) to discuss some cool projects he’s rigged, his path at Hercules SLR and some career tips for new workers starting out. 

Read on to learn more about Jim Case, and his job as a Rigger at Hercules SLR in Hamilton, Ontario. 

Tell us about your background as a Rigger, Jim: 

I started working in the rigging industry when I was 20 years old. I worked in a rope shop for 5 years and spliced rope. The company I worked for was bought, then switched hands a few times – I ended up making slings which, at the time, were more popular for us than rope. 

During my career, I’ve spliced a lot of wire rope for communication towers, steel mills, and have done a lot of work to drive belts. I’ve also had the chance to complete some projects for the US Military, specifically catapult ropes. And, I’ve done a bit of testing here in Hamilton, which is always fun! 

Nowadays, it’s easier to find a focus and not move around so much – workers will typically find their niche and grown within that. Examples of these niches could be circus rigging or offshore rigging.  

Now, I’m a rigger with Hercules SLR and fabricating synthetic slings – I enjoy work and keeping busy! 

Why did you decide to work in this industry?

Well, to be honest – I was 20 and needed a job! I put applications in, and I ended up really liking the industry. I’m doing the same job I was then, but now with Hercules SLR! 

I started working in the rigging industry in the late ’70’s – during the early 1980’s, many company owners were streamlining their business and selling off anything that wasn’t related to steel. This means I moved around a little bit! 

There’s a joke I always like to make – I’ve been bought and sold so many times, I don’t know if everyone or nobody wanted me! But, I’m very happy to have ended up with Hercules SLR. 

What’s something you’re most proud to have accomplished in your career at Hercules SLR?

Honestly, I’m proud of my attendance. I’m a loyal employee, and I never miss work.

Tell us about an exciting or cool project you’ve worked on during your time at Hercules SLR:

One of the coolest projects (that’s pretty notable too!) I worked on was preparing rope to temporarily open the roof of The O Stadium in Montreal, where they held the 1976 Olympics.

The O Stadium’s roof was originally intended to be retractable, but (infamously) a tower meant to support it wasn’t completed in time. This meant they needed a way to temporarily hold it open for the Olympic games, and I got to work on that project.

rigger, olympic stadium ropes, hercules slr
Aerial view of The O Stadium during the 1976 Olympics, with ropes installed by Jim

 For the O Stadium roof, we used gelded, 2inch rope and a special lubrication. This took us 2 weeks and we had a 12-guy crew! 

On a day-to-day basis, I really enjoy splicing rope. Even though it can be repetitive sometimes, it’s different everyday. Most of the orders take 1-2 hours to finish, so I can work on a few different types of projects throughout the day which is a nice variety. 

You’ve worked in the rigging industry for many years – tell us why it’s important to service your equipment and gear:

The main reason? Safety. Over the years, I’ve seen workers take a lot of shortcuts, which can lead to a lot of mistakes. Sometimes, workers can be resistant to change  – which is sometimes why they keep taking these shortcuts that might not be a safe procedure.

For example, I splice differently than some of the riggers in Brampton, but the end-product performs the same function. Some riggers stop splicing the rope on the left, right or vice versa. When you make things according to specified standards, you can sometimes take more liberties – like I said, as long as it performs.  

Tell us about a mistake you see made often in the industry:

The biggest mistake has got to be rigging equipment used improperly. When Hercules SLR receives a complaint that a product isn’t working like it’s supposed to, we have to see the equipment being used to remedy any issues they’re having.

In my personal experience, 90% of the time when this happens the equipment isn’t being used correctly – which is why it isn’t working correctly! 

What advice do you have for a new rigger, or someone just entering this industry?

A  big piece of advice I have for new workers in any industry really, is to plan your daily schedule at the beginning of your day – this makes it easier to deal with the flow of the day. 

For rigging, specifically, do the job right the first time! Earlier, you asked me about mistakes I see in the industry – rigging equipment passes through many different phases. It’s manufactured, used to lift various things and as I mentioned, is often used improperly. When rigging equipment fails, expensive loads can be damaged, companies can be shut down and people can be injured, or worse – killed. 

It’s important a rigger understands the consequences of cutting corners – and doesn’t do it. 

Any other helpful tips?

To select the right equipment for a lift, a big tip is to talk to someone who knows their stuff, and the end-user – whoever will be using the equipment. In a company, it can be helpful to talk to the sales team to learn more about this. 

For example, who will lift the rope? Do they have the capability to lift an 800-pound rope, or a 20-pound rope? They may want to select grommet-type or cradle-rope, which is usually smaller and more flexible. It’s important to make sure whoever’s at the end of the line can handle it. 

What’s something people might be surprised to learn about rigging?

Material and fabrication are surprising! People are astounded at the strength of nylon round slings! Sometimes, synthetic slings can be stronger and more flexible than other types of rope, like wire rope. For example, there used to be a rope made of Kevlar rope (this is what bulletproof vests are made of. FYI) that could float, but was heavier than steel – I haven’t seen it used recently, but it was used to pull huge barges. 

Finally, what do you like most about being a rigger at Hercules SLR? 

Our team. We have a great group of people here in Hamilton, Ontario. We’re like friends, but we actually get stuff done. 


Hercules SLR is part of the Hercules Group of Companies which offers a unique portfolio of businesses nationally with locations from coast to coast. Our companies provide an extensive coverage of products and services that support the success of a wide range of business sectors across Canada including the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, oil and gas, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

We have the ability to provide any solution your business or project will need. Call us today for more information. 1-877-461-4876. Don’t forget to follow us on FacebookTwitter and LinkedIn for more news and upcoming events.

What do Riggers do Offshore?

what do riggers do offshore

WHAT DO RIGGERS DO OFFSHORE?

What do riggers do offshore? If the first word that comes to mind when you think of the words ‘riggers’ or ‘rigs’ is ‘offshore’, you’re on the right track.

As we’ve covered in many of our blogs, riggers perform many different job duties, from stage rigging for plays to positions on construction projects that help move different equipment and materials. Although you’ve likely heard the term ‘offshore rigger’ or ‘rigging’ before, you still might not know everything about this job and its duties. 

Read on to and learn more about an offshore rigger’s job duties, responsibilities of the role and more about Hercules SLR’s work offshore. 

WHAT DO RIGGERS DO OFFSHORE? WHAT THE OFFSHORE INDUSTRY IS

When you hear the term ‘offshore’, it usually refers to the oil & gas and wind energy industries. In the oil and gas industries, a vessel is installed in specific areas to drill for oil or gas. This is important, since gas reservoirs can be found anywhere – including the ocean. To drill offshore, a drilling rig and pipe is installed to access reserves underground. This rig can be on a floating or fixed platform.

So, what do riggers do offshore? Offshore riggers’ manage and monitor all the different parts of a drilling vessel’s operation. To operate rigs, worker’s are required to operate the drilling, attach and operate machinery and deconstruct the machinery when drilling is complete. They also make sure that oil flows through the pipes properly and that oil is transported to the tanker efficiently, and the pipes don’t burst. A rigger is also responsible to make sure safety rules and regulations are followed – remember, emergency responders can’t access an offshore rig quickly or easily, so it’s essential that risk is minimized. 

A person who performs work on the offshore rig is often called a rigger, or a rig technician and there can be different positions, or levels of technicians who perform different duties based on their training, specialties or seniority.

There are often positions available that range from entry-level duties to roles that require experience or more specialized skill, like a derrickhand or welder, for example. Working hours on an offshore rig are much different than your typical 9-5 gigs – offshore work is usually accomplished in two-week (or longer) chunks. Often, riggers will work for a few weeks offshore, on the rig, and then will often have a few weeks off, back on-shore. Offshore rigging takes you away from land (if you didn’t catch that by the word ‘offshore‘), and as we mentioned, often for big chunks of time. 

what do riggers do offshore
A rig technician inspects a valve on an oil rig.

WHAT DO RIGGERS DO OFFSHORE? HOW HERCULES SLR SERVES OFFSHORE INDUSTRY

INSPECTIONS, TESTING & REPAIRS 

Hercules SLR has different technicians that work on offshore rigs with different issues, like broken equipment or machinery on the rig. Inspectors and other technicians will travel to offshore destinations to inspect, repair and if needed, certify equipment. This can happen when equipment fails or other issues are found that threaten safety – Hercules SLR can fix the issue until it’s safe to resume work.

Examples of inspection and repair issues Hercules SLR’s called to work on include:

  • Container inspections
  • Sling/equipment failure
  • Non-destructive testing,
  • Equipment failure
  • Incidents investigation (ex. A dropped load – dropped loads often cause injury, and can be fatal).
  • Fall protection products, inspections, repairs & trainings – a fall protection system is required when working at heights of 6-feet or more, so as you can imagine having a fall arrest system is crucial). 

Since an offshore rig is isolated and far from everyday amenities, it’s usually appropriate to have a rig technician for the entire project to ensure things run smoothly. Offshore rigging presents many safety risks, and it’s important to prevent and reduce any unnecessary harm to workers and the environment by making sure the rig runs properly. 

RIGGING 

Hercules SLR’s rigger’s will come to your offshore installation or project for nearly anything the operation needs. We can: 

  • Move or lift difficult loads to or from the offshore rig
  • Provide you with lifting equipment or equipment rentals for lifting/moving 
  • Identify methods or equipment needed to move particular loads
  • Create custom-rigging solutions to move awkward or difficult loads 
  • Provide riggers’ for your offshore installation 
TRAINING

The Hercules’ Training Academy offers different courses that are useful in offshore applications, like Fundamentals of Rigging with Practical.  

Hercules SLR’s training courses can be completed at the Hercules Training Academy, or, we can come to your offshore installation. Our Offshore Rigger Banksman course teaches students the fundamental skills to rig, lift, sling & release loads in an offshore environment. The course also includes: 

  • Regulations, standards and associations
  • Risk management
  • Rigging plan
  • Calculating load weight, centre of gravity and sling angles 
  • Load control
  • Rigging equipment how-to’s (slings, hitches, hardware and hooks) 
  • Pre-use inspection 
  • Duties and responsibilities of the rigger and banksman 
  • Communications (radio and hand signals)
  • Personnel transfer
  • Container inspection
  • Practical application of the equipment and principles 
what do riggers do offshore at hercules slr
Valves and pipes on an oil rig.

WHAT DO RIGGERS DO OFFSHORE? SAFETY TIPS FOR THE RIG

Safety is very important on offshore rigs not only to prevent injury, but to avoid costly delays in work. As we mentioned, making sure equipment is taken care of is essential, especially for a safe offshore operation. Not only does this make sure the drilling rig operates properly, but will help keep workers safe by preventing a hazard caused by equipment failure.

We can’t stress the importance of safety on the rigs – more safety tips for work on offshore rigs are:

  • House-keeping: Slippery surfaces lead to falls. Using proper PPE to avoid slips and keeping surfaces as dry and clean as possible will help manage risk.
  • Emergency Planning: It’s important to have thorough emergency plans for work on offshore rigs. A confined space entry and rescue plan, exit and first-aid response plans for emergency response are just a few plans it’s important to have before starting work offshore. 
  • Personal Protective Gear (PPE): This goes without saying, but making sure you have the proper PPE is important to stay safe. This should include proper fall protection for tools, non-slip shoes, safety glasses and even lighting for hard-to-see areas.

WHAT DO RIGGERS DO OFFSHORE? IS IT RIGHT FOR YOU 

Do you enjoy assembling and disassembling machinery? Like making equipment work? Have a passion for safety? If you don’t mind travelling, work as a rigger offshore might be perfect for you. 

Being an offshore rigger requires mechanical knowledge, common sense (not as common as you might think, and very important for a safe operation) and communication skills to keep yourself and others safe.

To learn more about offshore rigging, check out our blogs below or head to our career page to browse offshore rigger career opportunities.  


FOR MORE INFORMATION ON OFFSHORE RIGGING,

CHECK OUT OUR BLOGS:

HERCULES SLR AT THE SABLE STRATEGIC LEADERSHIP WORKSHOP

RIGGING WITH OVER 15 YEARS’ EXPERIENCE IN HAMILTON, ONTARIO: MEET RIGGER JIM CASE

GET TO KNOW LANGLEY, BC NDE INSPECTOR CHRIS DAVIES

BECOME A RIGGER: YOUR CAREER MAP


STAY IN THE LOOP—FOLLOW US

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Need offshore rigging solutions? Hercules SLR will lift you there.

Click here to learn more about offshore rigging services at Hercules SLR, or e-mail us at info@herculesslr.com to find more information on how we can serve your next offshore project.   

Hercules SLR is part of the Hercules Group of Companies which offers a unique portfolio of businesses nationally with locations from coast to coast. Our companies provide an extensive coverage of products and services that support the success of a wide range of business sectors across Canada including the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, oil and gas, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

We have the ability to provide any solution your business or project will need. Call us today for more information. 1-877-461-4876. Don’t forget to follow us on FacebookTwitter and LinkedIn for more news and upcoming events.

Sling Inspection Checklist: Hercules How-To

sling inspection checklist

SLING INSPECTION CHECKLIST

Sling inspection is an important part of a rigger’s daily routine – here’s a sling inspection checklist to make life easier.

Check out our sling inspection checklist that includes removal criteria to know when your sling should be removed from service, and help keep your lifting equipment in good, working order. 

You’re welcome. 

SLING INSPECTION: ASME STANDARDS B30.9 

INITIAL INSPECTION 

  • Before use, all new, altered, modified or repaired slings shall be inspected by a designated person. 

FREQUENT INSPECTION

  • A visual inspection for damage shall be performed by the user or other designated person each day or shift the sling is used.

PERIODIC INSPECTION

  • A complete inspection for damage of the sling shall be periodically performed by a designated person.

ROUND SLINGS: SLING INSPECTION CHECKLIST

Remove your synthetic round sling for service if these conditions are present: 

  • Missing or illegible sling identification.
  • Acid/caustic burns.
  • Evidence of heat damage.
  • Holes, tears, cuts, abrasive wear or snags that expose the core yarns.
  • Broken or damaged core yarns.
  • Weld splatter that exposes core yarns.
  • Knots in the round sling,  except for core yarns inside the cover.
  • Fittings that are pitted, corroded, cracked, bent twisted, gouged, or broken.
  • For hooks, removal criteria as stated in ASME B30.10.
  • For rigging hardware, removal criteria as stated in ASME B30.26.
  • Other conditions, including visible damage, that cause doubt as to the continued use of the sling.

CHAIN SLINGS: SLING INSPECTION CHECKLIST

Remove your alloy chain sling from service if these conditions are present: 

  • Missing or illegible sling identification (see Section 9-1.7).
  • Cracks or breaks.
  • Excessive wear, nicks, or gouges. Minimum thickness on chain links must not be below the values listed in Table 1.
  • Stretched chain links or components.
  • Evidence of heat damage.
  • Excessive pitting or corrosion.
  • Lack of ability of chain or components to hinge (articulate) freely.
  • Weld splatter.
  • For hooks, removal criteria as stated in ASME B30.10.
  • For rigging hardware, removal criteria as stated in ASME B30.26.
  • Other conditions, including visible damage, that cause doubt as to the continued use of the sling.

SYNTHETIC WEB SLINGS: SLING INSPECTION CHECKLIST

Remove your synthetic web sling from service if the following conditions are present: 

  • Missing or illegible sling identification (see ASME Section 9-5.7).
  • Acid or caustic burns.
  • Melting or charring of any part of the sling.
  • Holes, tears, cuts or snags.
  • Broken or worn stitching in load bearing splices.
  • Excessive abrasive wear.
  • Knots in any part of the sling. Discoloration and brittle or stiff areas on any part of the sling, which may mean chemical or ultraviolet/sunlight damage.
  • Fittings that are pitted, corroded, cracked, bent, twisted, gouged, or broken.
  • For hooks, removal criteria as stated in ASME B30.10.
  • For rigging hardware, removal criteria as stated in ASME B30.26.
  • Other conditions, including visible damage, that cause doubt as to the continued use of the sling.

INSPECTION FREQUENCY

How often should you inspect your slings? Frequency is based on these factors: 

  • Frequency of use
  • Severity of service conditions
  • Nature of lifts being made
  • Experience gained on the service life of slings used in similar circumstances. 

NOTE ON SAFETY & REPAIRS

Slings must be repaired by the sling manufacturer, or a qualified person, per ASME B30.9. 

As mentioned above, a sling must be inspected by a designated competent person before it’s used to determine that the sling meets the manufacturer’s required specifications. 

Employers must take necessary measures to protect and ensure the health, safety and physical well-being of every worker. The employer must use methods and techniques intended for the identification, control and elimination of risks to their workers. The inspection of lifting equipment is required to satisfy this obligation.


Hercules SLR is part of the Hercules Group of Companies which offers a unique portfolio of businesses nationally with locations from coast to coast. Our companies provide an extensive coverage of products and services that support the success of a wide range of business sectors across Canada including the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, oil and gas, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

Become a Rigger: Your Career Map

"become a rigger"-become-a-rigger-hercules-slr-rigging-careers

BECOME A RIGGER.

BECOME A RIGGER: YOUR CAREER MAP

                                    

BECOME A RIGGER: TRAINING & EDUCATION                                                                               

 

 

So you want to become a rigger?

A rigger’s main responsibility is to lift, lower, hoist and pull objects using machinery and lifting equipment like synthetic, chain and wire rope slings, hoists and cranes.

They are responsible to make and determine the best configurations and equipment to lift a load, be knowledgeable about safety & operating procedures and know how to fabricate, repair, inspect, install and service rigging and lifting equipment – lifting equipment can range from synthetic slings, wire rope, lifting magnets or cranes and aerial lifting trucks. 

Certain industries, or niche industries (particularly those that require you to use and operate heavy machinery and equipment like cranes and lifting trucks) will require a specific certification to operate them. 

A rigger can provide these services: 

  •  Inspections, on-site or in-shop
  •  Load tests 
  •  Crane repair, sales, inspection and installation
  •  Training
  • Sales and services 

BECOME A RIGGER: TRAINING AND CERTIFICATIONS                                                                

 

 

Many industries that use riggers or rig technician’s don’t require formal training, but do require and/or provide on-the-job learning, training courses and certifications.

However, it may be beneficial to complete a college or technical diploma, which can improve your chances of getting a job or apprenticeship.  

At Hercules SLR, our riggers have a combination of LEEA certifications and on-the-job training from our certified trainers and inspectors.  

Some of these include:

  • Lifting Certifications from LEEA
  • Training Courses 
  • College Diploma 

You also have the option to become a rig technician, which is a Red Seal Trade in Canada. According to the NSAA, a rig technician: 

  • Operates drawworks, rotary equipment and pumps 
  • Inspects rigs 
  • Maintains records of drilling operations
  • Oversees rig mobilization and demobilization 

You don’t need formal education to become a red seal technician, but must complete 9,000 apprentice hours to qualify to complete the rig technician red seal exam. A rig technician is responsible for the above duties, but also operating tools, wearing and ensuring the proper PPE is used and must operate lifting and hoisting equipment. 

become a rigger, "become a rigger"
Cranes, chains & cargo – a glimpse at common items and equipment found in rigging industry 

BECOME A RIGGER: ESSENTIAL SKILLS                                                                                              

 

                                                                                                 You might wonder—”This sounds nice, but what should I be good at to be a rigger?” A career as a rigger may be right for you if you’re:  

  • Mechanically inclined;
  • Comfortable with math and physics; 
  • Interested in a balance of both physical and administrative work, comfortable using technology;
  • A strong, effective communicator;  
  • An eye for detail and quick decision-making; 
  • Comfortable in harsh climate conditions, rigging often involves working in the extreme heat or       cold.  

BECOME A RIGGER: INDUSTRIES YOU COULD WORK IN                                                           

 

 

  • Entertainment (set and stunt rigging) & Theatre (stage rigging) 
  • Maritime, marine & fishing – sailboat rigging included 
  • Airline 
  • Construction  
  • Offshore Drilling/Oil and Gas 
  • Mining 
  • Manufacturing
  • Forestry
  • Transportation
  • Utilities 
  • Shipping/Receiving and Material Handling 

BECOME A RIGGER: LIKE THE SOUND OF THESE JOB TITLES?                                                   

 

 

If you become a rigger, you could have one of these job titles: 

  • Slinger
  • Parachute Rigger
  • Sailboat/Ship Rigger
  • Gantry Rigger
  • Machinery Mover
  • Hook Tender
  • Wire Rigger
  • Yacht Rigger
  • Grip
  • Crane Rigger
  • Acrobatic Rigger
  • Theatrical Rigger

BLOGS                                                                                                                                                             

 
 
 
 
Interested to learn more about rigging, becoming a rig technician and rigging and lifting equipment? Check out our blogs below:
 

HERCULES TRAINING ACADEMY

TRAINING COURSES

References: https://www.nscc.ca/Learning_Programs/Programs/PlanDescr.aspx?prg=MIRG&pln=MARINDRIG, https://nsapprenticeship.ca/trades#accordion58, https://www.myplan.com/careers/riggers/description-49-9096.00.html, http://www.red-seal.ca/trades/rigtech/2012n.4.1_.4v.2rv.3.2w-eng.htmlhttps://www.jobhero.com/how-to-become-rigger/, https://www.myplan.com/careers/riggers/description-49-9096.00.html
 

Hercules SLR is part of the Hercules Group of Companies which offers a unique portfolio of businesses nationally with locations from coast to coast. Our companies provide an extensive coverage of products and services that support the success of a wide range of business sectors across Canada including the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, oil and gas, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic

We have the ability to provide any solution your business or project will need. Call us today for more information. 1-877-461-4876. Don’t forget to follow us on FacebookTwitter and LinkedIn for more news and upcoming events.

CM Guest Blog: 3 Safety Tips to Install your CM Trolley

cm-trolley-hercules-slr

Read on to discover tips from rigging and load securing experts at Columbus McKinnon – today, they’re sharing their top three safety tips to remember when you install your CM trolley.

Whether it’s a hoist, trolley or rigging equipment, proper use, inspection and maintenance is important to ensure operator safety at all times. Operators of material handling equipment should adhere to the manufacturer’s installation, inspection and maintenance requirements outlined in the product’s operation and maintenance manual (O&M manual).

Beam clamps and trolleys are critical components of a complete lifting system and demand the same attention to safety as hoists and below-the-hook rigging. The following three safety tips are important to consider when installing and inspecting a CM Series 633 Trolley.

1. CM Trolley Safety Tip: Consider the flange and shape of the I-beam to ensure proper fit and clearance. Measure the I-beam flange and check the distance between track wheel flanges. This distance should be 1/8 to 3/16 inch greater than the beam flange width for a straight runway. Additional clearance may be required for the trolley to negotiate track sections with curves. This clearance should be kept to a minimum to ensure the trolley operates properly on both the straight track sections and the curved track sections. See Figure 1.

cm-trolley-hercules-slr-rigging
Figure 1

2. CM Trolley Safety Tip: Ensure the equalizer pin nuts have been installed properly, in accordance with the O&M manual recommendations. The pins should be tight and locked position. Nuts should be regularly inspected to ensure they’re tight and secure during periodic inspections, which can be monthly or yearly – depending on service. Refer to your O&M manual, and/or ASME Standard B30.17.

3. CM Trolley Safety Tip: It is recommended that the trolley is mounted to the hoist prior to final installation onto the beam. Follow the washer and spacer instructions in your O&M manual to properly set the trolley based on the application’s beam flange width.

Please note: washer and spacer arrangement recommendations shown in the O&M manual are affected by structural variations. The accuracy of the final adjustment should be verified by the installer to ensure proper clearance is achieved between the trolley wheel flanges and the toe of the runway beam. See Figure 2.

cm-trolley-hercules-slr-rigging-services
Figure 2

Remember, any trolley installation should always be done in accordance with the manufacturer’s instructions or the recommendations of a qualified person. Improper installation can cause unequal loading on the trolley and side beam, and as a result can cause the trolley to fall from the beam. It’s also recommended that a load test is performed to 100-125% of the rated capacity of the crane after installation.

Want more CM? Visit our Columbus McKinnon brand page for more information on Hercules SLR’s CM offerings.

Reprinted with permission via Columbus McKinnon – original article here


Hercules SLR is part of the Hercules Group of Companies which offers a unique portfolio of businesses nationally with locations from coast to coast. Our companies provide an extensive coverage of products and services that support the success of a wide range of business sectors across Canada including the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, oil and gas, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

We have the ability to provide any solution your business or project will need. Call us today for more information. 1-877-461-4876. Don’t forget to follow us on FacebookTwitter and LinkedIn for more news and upcoming events.

Rigging Services: 3 securing tips to lift you anywhere

rigging-services-hercules-slr

Rigging Services

So you’ve got a difficult load to move – whether it’s due to an awkward shape, uneven weight or hard to determine lift points, Hercules SLR rigging services will lift you where you need to be.

We don’t just sell slings at Hercules SLR – we provide inspections, repairs, training and expert advice to keep your projects safe and efficient.

In addition to calculating the load’s weight, there are a few other tips to planning, rigging and executing a successful lift – read on for tips from our expert riggers to secure your hard-to-manage load and accomplish your next lift with ease.

rigging-services-hercules-slr
Crane lifting electric generator

Rigging Services: 3 tips to move an “awkward” load

One

We can’t stress this enough – inspect your equipment! Says rigger Dwayne Fader, Sales Manager at Hercules SLR “Once the equipment is broken, it’s already too late – maintenance and regular inspection is the key to prevention.”

Check the manufacturer instructions or manual for suggested and required inspection times – Unless you want to damage that expensive part, package or material, which costs WAY more over time than simply investing some time and money into inspections.

An informal inspection should be done before each lift, and official inspections should be done according to manufacturer and/or provincial regulations.  

Two

Bigger isn’t always better. Sometimes, you might look at a large object like a vehicle and just think, “well I’ll grab a bigger shackle or sling.” But you’d be surprised at how much support a smaller sling and/or hardware does have.

“Most people are surprised to learn that a small, 2 1/2″ shackle is strong enough to lift a car – bigger shackles are available, but why go bigger when you don’t need to? Often, the smaller piece of equipment will be safer and better suited to the application as it’s meant to support a specific amount of weight.” says Fader.

Using slings which are too big and create bunching are a safety issue, and so is using a shackle which is too big that a sling may slide around in.

Three

Preventative maintenance is a pain, but important. The longer a piece of equipment isn’t inspected or small repairs are ignored, the worse the outcome typically is. A small build-up of issues can eventually lead to large, more expensive repairs. Neglecting preventative maintenance will increase both cost and the risk of injury or death.

Rigging Services: your reading list

Want more? Find more rigging tips and information on our blog – try these:


Hercules SLR is part of the Hercules Group of Companies which offers a unique portfolio of businesses nationally with locations from coast to coast. Our companies provide an extensive coverage of products and services that support the success of a wide range of business sectors across Canada including the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, oil and gas, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

We have the ability to provide any solution your business or project will need. Call us today for more information. 1-877-461-4876. Don’t forget to follow us on FacebookTwitter and LinkedIn for more news and upcoming events.

Poly-What?! All About Synthetic Slings

what-are-synthetic-slings

Synthetic slings are generally available in two varieties – flat-woven web slings and round slings. Textile slings should perform in accordance with ASME standards B30.9-5.

Synthetic Slings: flat-woven web sling (or webbing sling)

Synthetic flat-woven web slings are usually made with woven polyester, polyamide (which is a fancy word for nylon) or polypropylene, and have an eye (basically, a loop) stitched at each end. They are available in Simplex (one layer) or Duplex (two layers).

Web slings are made with a safety factor of at least 5:1 – although other industries may require a higher safety factor.

Synthetic Slings: round slings

Round slings (also known as ’roundslings’) are made from load-bearing fibres with a protective, abrasion-resistant outer later. Their round form is known as ‘endless construction’, and are available in different lengths and capacities.

Synthetic Slings: beat the heat

Consider the temperature of both your surroundings and the load you will lift – synthetic materials have selective resistance to heat, which will effect which sling you choose.

Synthetic sling heat ranges are:

  • Polyester and polyamide: -40°C to 100°C
  • Polypropylene: -40°C to 80°C

These synthetic materials protect against a variety of chemicals, however – they offer different levels of protection against chemicals like acids. Synthetic sling chemical resistance is:

  • Polyamide (Nylon): Resistant to the effects of alkalis, but is attacked by acids.
  • Polyester: Resistant to acids, but damaged by alkalis.
  • Polypropylene: Shows little affect from acids or alkalis. Sustains damage from solvents and paint.
Synthetic Slings: colour codes

Synthetic material in slings are colour coded, in order to identify them properly. The label will be a specific colour, and may also have the type of material written as an abbreviation.

The colour codes are:

what-are-synthetic-slings-
Figure 1: Synthetic Sling Labels

 

Synthetic Slings: eye formations
what-are-synthetic-slings
Figure 2: web sling types

The loop at the end of the web sling is called an eye formation – there are various formations to suit different applications.

There are six different types of web sling types – see figure 2. The six names for these slings are:

  • Type 1—Choker
  • Type 2—Basket
  • Type 3—Eye & Eye
  • Type 4—Twisted Eye
  • Type 5—Endless
  • Type 6—Reversed Eye
Synthetic Sling: round slings

These are made with multiple, high-tenacity yarns, which are covered with a protective sleeve. These are usually made from polyester – but, polyamide (nylon) and polypropylene are available too.

To identify these slings, an identification label is sewn into the cover which details user information and traceability requirements.

They are flexible, light-weight and very flexible.

Synthetic Sling: pre-use inspection

Follow these steps before using your synthetic sling each time – this will ensure you and coworkers will stay safe, and eliminates potential of the sling breaking and damaging the load.

If you find damage on your synthetic sling, it should be removed from service immediately – refer it to a competent person to have it inspected and repaired if necessary.

During your pre-use check, you should:

  • Check the sling label is present and legible and includes manufacturer, rated load for at least one hitch, material type, number of legs (if more than one) and the manufacturers code/stock number.
  • Check that the sling body has no signs of tears, cuts or severe abrasion
  • Check formed eyes for damaged stitching
  • Verify end fittings (where present) function correctly and are undamaged.
  • Check for signs of chemical damage.
  • Check that sling has undergone its periodic thorough inspection.
  • No knots in sling.
Synthetic Slings: shackles, hooks n’ hardware

When you attach a sling to hooks or shackles, take care to ensure the slings don’t bunch around the accessory. Bunching can cause damage since only a portion of the webbing supports the load.

When securing a load with webbing slings, don’t be concerned with the d/d ratio (diameter around the bent sling divided by the body diameter of the sling) – but you must consider the width of the webbing. Follow the manufacturer’s recommendations when you lift with synthetic web slings.

what-are-synthetic-slings
Note: the sling that lies in the shackle fits perfectly – there’s no bunching or a sling that protrudes from the shackle pin.

Hercules SLR – Custom Rigging and Lifting Solutions

Hercules SLR offers custom lifting solutions. We’ll match you with the best equipment and hardware for your project needs, and we’ll customize equipment to meet your specifications.

Need a lift? Drop us a line at info@herculesslr.com to speak with one of our rigging experts – we’ll take you where you need to be.

Need proof? Read about the Frankensling we made for The Town of Oakville Marina, our rigging fundamentals course that Hercules staff from across Canada completed at the Hercules Training Academykeep your synthetic round slings in good working order with our Free Downloadable Synthetic Round Sling Inspection Guide or read our blog on how to prevent synthetic round sling damage.


Hercules SLR is part of the Hercules Group of Companies which offers a unique portfolio of businesses nationally with locations from coast to coast. Our companies provide an extensive coverage of products and services that support the success of a wide range of business sectors across Canada including the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, oil and gas, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

We have the ability to provide any solution your business or project will need. Call us today for more information. 1-877-461-4876. Don’t forget to follow us on Twitter, LinkedIn and Facebook for more news and upcoming events.

Behind-the-Scenes: Life of a Slingmaster Sling

slingmaster-sling-hercules-slr-rigging

slingmaster-slingA SlingMaster sling lives a short,  but full life. We’ve covered the less-talked about non-destructive testing here  and here – but what exactly does destructive testing look like, and why do we use it?

Destructive testing is the process used to test a product and find its ultimate load (the load at which the item being tested fails or no longer supports the load) – in this case, a SlingMaster webbing sling’s breaking or tensile strength. This helps our riggers’ determine how our slings perform under different conditions.

First, one of our industrial seamstresses measures and cuts the length of the sling.

Then, the sling travels to our warehouse for destructive testing. The buttons are pressed, and the stretch begins.

The sling is pulled from each end with increasing force applied in increments – this mimics the sensation of a sling supporting a load.

Watch the video below to see the life-cycle of a SlingMaster sling – from birth, to death-by-destructive testing:

Did you know Hercules SLR offers custom rigging solutions? If you have something you want to lift, lower, hoist or move – give us a call. We’ll take you there.

Speak with one of our experts and let us find you the best sling for you or your company’s needs – e-mail us at info@herculsslr.com or call us at 1 (877) 461-4876 for more information.


Hercules SLR is part of the Hercules Group of Companies which offers a unique portfolio of businesses nationally with locations from coast to coast. Our companies provide an extensive coverage of products and services that support the success of a wide range of business sectors across Canada including the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, oil and gas, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.

We have the ability to provide any solution your business or project will need. Call us today for more information. 1-877-461-4876. Don’t forget to follow us on FacebookTwitter and LinkedIn for more news and upcoming events.

Herc How-To: Assemble a Chain Sling

how-to-assemble-chain-sling

Herc How-To: assemble a chain sling

Chain is often used to tie down loads, for lifting applications and to tow loads – however, the rigging industry’s safety standards have developed in recent years, and chain used for lifting must meet certain specifications. Read on for our tips on how to assemble a chain sling.  

Chain slings are among some of the most popular options for to lift a load – they’re often used to lift spreader beams, for example. Chain slings are durable, ductile, can resist high temperatures, rips & tears and in certain applications, are adjustable – but how do you determine the best chain sling for your project needs?

Herc How-To: two kinds of chain assembly

Two types of chain slings are used to for rigging and lifting applications – mechanical assembly and welded assembly. Chain slings are made with a minimum safety or design factor of 4:1.

The most common chain slings used in rigging and lifting are mechanically assembled since they’re quick to produce and it can be done with basic tools. Chain slings are made by a variety of manufacturers and in many different configurations.

Herc How-To: mechanically assembled chain sling hardware

Construct a basic mechanically assembled chain sling with this hardware:

  • Master Link
  • Mechanical Jointing Device
  • Shortening Clutch (if required)
  • Chain
  • Hook (other fitting as required)
  • Tag

Herc How-To: welded assembly

Welded slings are less commonly used. They take more time to manufacture, since once they’re made they undergo a heat treatment so they’re safe to use in a lifting application. This takes days, versus the minutes it takes to together a mechanically assembled chain sling.

Construct a welded assembly chain sling with this hardware:

  • Master Link
  • Welded Intermediate Link
  • Welded Connecting Link
  • Chain
  • Hook (other fittings if required) ** not pictured
  • Tag

Herc How-To: assemble a chain sling with correct chain grades

The marking grade for chains is recognized by numbers which are found on the chain link. Chain grades for chain sling assembly start at Grade 80 – Grade 80, 100 and 120 are used for lifting applications. However, do not use chain grade marks to determine overhead lifting applications. Do not use grade 30, 40 or 70 chains for overhead lifting.

These grades are used for lifting as they’re ductile and can cope with “shock-loading” that can happen while rigging.

Herc How-To: find the right assembly for you

Follow these steps to assemble the best chain sling for your lifting needs.

  1. Determine the weight of the load to lift, it’s working load limit and any angles that will affect the lift – read our blog on how to calculate load weight for detailed steps.
  2. Head to the dimension/specification chart provided by the chain sling’s manufacturer. Find the chain sling configuration* that will suit your load and lift.
  3. Head to the assembly chart found in the catalogue or website of your respective distributer. Find the Working Load Limit (WLL) to lift at the top of the chart. Find the column that represents size/length, which will be donated in centimetres, inches or millimetres. Be sure to size up. Example: if your load’s WLL is 3,000lbs the chart may give you two options – a WLL of 2,650 and 4,500. Choose the chain length that corresponds with the WLL of 4,500lbs – it’s better to have too much capacity than not enough.
  4. Use the same instructions from Step 3 to choose hardware/fittings from the respective specification chart(s). Example: You’ve chose the DOG sling configuration – this means you must find an oblong shaped masterlink and a grab hook that corresponds to the WLL.
For example: Jim is planning to lift a load with a WLL of 3,000lbs and wants to assemble a chain sling.

Step 1) Jim finds the WLL column of his retailer.

Step 2) Find the WLL – since 3,000lbs isn’t on the chart, we choose the next one up which has a WLL of 4,500lbs.

Step 3) Jim needs chain with 1.79in. length.

how-to-assemble-chain-sling

 
* Chain Sling Configurations

Configurations are denoted by an acronym – the first letter represents the number of sling legs, the second letter represents the fitting at the top of the sling and the third letter represents the bottom fitting. Example: the “O” in DOG represents an “oblong shaped master link”.

Single-Leg 
         
CO Single chain sling with masterlink  
SOS Single chain sling with masterlink and sling hook
SOG Single chain sling with masterlink and grab hook
SOF Single chain sling with masterlink and foundry hook
SSS Single chain sling with sling hook each end 
SGS Single chain sling with grab hook and sling hook
ASOS Adjustable single chain with masterlink and sling hook 
ASOF Adjustable single chain with masterlink and foundry hook 
ASOG Adjustable single chain with masterlink and grab hook 
SOCH Single chain sling with sliding choker   
SOSL Single chain sling with with self locking hooks 
2-Leg
         
DOS Double chain sling with masterlink and sling hook
DOG Double chain sling with masterlink and grab hook
DOF Double chain sling with masterlink and foundry hook
ADOS Adjustable double chain sling with masterlink and sling hook
ADOG Adjustable double chain sling with masterlink and grab hook
DOCH Double chain sling with masterlink and sliding choker 
DOSL Double chain sling with with self locking hooks 
ADOSL Adjustable double chain sling with with self-locking hooks 
3-Leg
         
TOS Triple chain sling with masterlink and sling hook
TOG Triple chain sling with masterlink and grab hook
TOF Triple chain sling with masterlink and foundry hook
TOSL Triple  chain sling with with self locking hooks 
4-Leg
         
QOS Quadruple chain sling with masterlink and sling hook
QOG Quadruple chain sling with masterlink and grab hook
QOF Quadruple chain sling with masterlink and foundry hook
QOSL Quadruple chain sling with self-locking hooks 

 

Hercules SLR – Custom Chain Sling Assembly, Inspections, Repairs and more

We make custom slings to fit your needs, no matter the application. Damage found on chain slings can be inspected, repaired or replaced if needed – e-mail us at info@herculesslr.com to purchase a chain sling, find out more about how to assemble a chain sling or to have a chain sling repaired or inspected. 

____________________________________________________________________________________________________________

Hercules SLR is part of the Hercules Group of Companies which offers a unique portfolio of businesses nationally with locations from coast to coast. Our companies provide an extensive coverage of products and services that support the success of a wide range of business sectors across Canada including the energy, oil & gas, manufacturing, construction, aerospace, infrastructure, utilities, oil and gas, mining and marine industries.

Hercules Group of Companies is comprised of: Hercules SLRHercules Machining & Millwright ServicesSpartan Industrial MarineStellar Industrial Sales and Wire Rope Atlantic.