Are the Technicians Inspecting your Gear Qualified?

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LEEA – Lifting Standards Worldwide™

Hercules Inspectors are LEEA trained nationally. LEEA, the Lifting Equipment Engineers Association is the respected and authoritative representative body for those who work in every aspect of the industry, from design, manufacture, refurbishment and repair, through to the hire, maintenance and use of lifting equipment.

The next time your equipment is due for inspection, make sure Hercules SLR is your first choice for expert advice and service.


Established across the globe LEEA has over 1170 member companies based in 69 countries. Hercules SLR is proud to be one of them.

LEEA has played a key role in this specialized field for over seventy years, from training and standards setting through to health and safety, the provision of technical and legal advice, and the development of examination and licensing systems.

LEEA represents all its members at the highest levels across a range of both public and private bodies, including various government departments, as well as nationally and internationally recognized professional and technical institutions.

LEEA are ISO 9001:2015 registered and an Associate Member of DROPS (Dropped Objects Prevention Scheme).

LEEA is actively involved in all aspects of the industry, promoting the highest technical and safety standards and offering a wide range of services and support to their Members worldwide.

History of the Association

The origins of the Lifting Equipment Engineers Association (LEEA) can be traced back to wartime Britain in 1943; a small group of competing companies came together to address what they perceived as a serious threat to their livelihoods. On 3rd June, nine people representing eight chain testing houses met at the Great Eastern Hotel, near Liverpool Street Station, and the idea to form an association to take on the might of government was conceived. Several weeks later, a draft set of rules and regulations was drawn up. During that process, a decision was made that, regardless of size, all members should be considered equal, both in terms of influence and financial contribution and the annual subscription was set at £4 and 4 shillings (£4.20).
The London Chain Testers Association was the name chosen by the founding members and was a clear reflection of the nature and location of the businesses involved. However, evidence shows that as this small group quickly made headway in negotiations with the government, attention turned to other areas where it was felt that co-operative action could be of mutual benefit. These included exploring the potential for pricing agreements, block insurance, the use of collective purchasing to secure more favourable deals from manufacturers, and adherence to British Standards to improve quality and consistency within the industry.By 1946, the association’s geographical boundaries expanded. Members were now actively sought from across the country, a move highlighted by a change of name to The Chain Testers Association of Great Britain.With the immediate concerns of a wartime economy behind them, the following decades of the 20th century can be seen as a series of landmarks that would ultimately establish the association as an authority on safe lifting and the industry’s foremost provider of training and qualifications for the test, examination and maintenance of overhead lifting equipment. Milestones in this period included:

  • The publication of the Chain Testers’ Handbook in 1953. Predominantly the work of Mr. C H A McCaully of W&E Moore, this brought together for the first time all the essential information required by the ‘man at the bench’ – the chain tester.
  • In 1959 it was followed by the examination scheme for lifting equipment engineers. In 1981, the Code of Practice for the Safe Use of Lifting Equipment (COPSULE) was launched.
  • In 1983, training courses were introduced to prepare students for exams that are now sat by several hundred candidates around the world every year.

Towards the end of the 20th century, important developments took place within the association’s infrastructure, and the nature of member companies changed to include a far wider range of activities. Notable events include the set-up of the organisation’s first independent office in 1977, and a third name change—to the Lifting Equipment Engineers Association in 1988.

With the introduction of the Lifting Operations and Lifting Equipment Regulations (LOLER) in 1998, LEEA’s training, qualifications and publications had to be fundamentally reworked to reflect this new legislation, and the association’s support and guidance became even more important to members obliged to comply with the requirements of the new legislation.

This legislative upheaval combined with the all-pervasive impact of globalisation, and an absence of sector-specific health and safety legislation—so, many companies who operated in these parts of the world began to adopt LOLER as best practice, which further enhanced the appeal of LEEA membership.

Since the turn of the century, LEEA’s development has reflected these trends and milestones have included:


  • In 2006, The launch of the LiftEx trade show;
  • In 2007, the move to new headquarters and a purpose-built training centre, an ever increasing portfolio of practical courses to complement online distance learning provision;
  • In 2009, the introduction of the TEAM card registration and identity scheme for qualified engineers and technicians.

Perhaps the most striking is LEEA’s transformation into a truly international body. Regardless of where they are based, there is now no distinction between members – all are subject to the same technical audits prior to being granted full membership, with regular follow-up visits as long as they wish to remain part of the association. Dedicated local groups are now operating in the Middle East and Australia, and LEEA staff have become globetrotters, regularly meeting existing and potential members, as well as a host of other stakeholders, right across the world.

Learn more about LEEA on their website 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.

Rigging Glossary: ABC’s of rigging, ‘A’ to ‘Crane’


Hercules SLR knows rigging, A through Z!

There are many terms and regulating bodies to know and remember when it comes to securing, lifting and rigging—some commonly used in the industry, some not.

Hercules SLR is here to help you keep up with the rigging industry and its jargon.

We’ve put together a guide of rigging terms that you should know, starting with A, B and C.

Rigging Terms: A-C


Acceleration Stress: Additional stress created by increase in load velocity.

Aggregate Strength: Wire rope strength found by total individual breaking strength of the element of strand or rope.

AISE: Association of Iron and Steel Institute

AISI: American Iron and Steel Institute

Alternate Lay: Lay of wire rope in which strands alternate between regular lay and lang lay.

Angle of Loading, or Angle Loading: The inclination of a sling’s leg or branch measured from the horizontal and vertical plane. The angle of loading should be five degrees or less from the vertical plane.

ANSI: American National Standards Institute

API: American Petroleum Instituterigging-lifting-hoisting

Armoured Rope: Steel-clad rope

ASME: American Society of Mechanical Engineers

ASTM: American Society for Testing Materials

AWS: American Welding Society


Bail: U-shaped member of bucket, load or socket, usually used as a lift point. Can also be other fitting used on wire rope, or a swivel hoist ring’s attachment point.

Barrel: Lagging/body part of a rope drum in a drum hoist.

Base: Mounting flanges or feet, used to attach a hoist to its supporting structure or foundation.

Basket Hitch: A sling set-up where the sling is passed under the load and has both ends, end attachments, eyes or handles on a hook, or single master link.

Bearing Life (or Rated Life): The number of revolutions or hours, that an identical group of bearings used at a 90% constant speed will finish or exceed before the first signs of wear or fatigue develops. Essentially, 10 of 100 bearings will fail before their rated life. Minimum Life and L10 also mean Rated Life.

Becket: A wedge socket type of wire rope end termination.

Becket Line: Part of rope in a multi-ply reeving system that’s dead-ended on one of the blocks.

Becket Loop: A loop or a strand of small rope attached to the end of a large wire rope to facilitate installation.

Bird Cage: A common term used to describe the look of wire rope that’s been forced into compression. The outer strand forms a ‘cage’, and at times can displace the core.

Bleeding Line: Caused when the wire rope is overloaded. This squeezes the lubricant from the cable out and  makes it run excessively.

Block: A term applied to a wire rope sheave (pulley) inside plates. It’s fitted with an attachment like a shackle or hook.

Braided Wire Rope: Wire rope formed by plaiting component wire ropes.

Brake: Device used for slow or stopping motion with friction or power.

Brake, Eddy Current: Device for controlling speed in hoisting or lowering direction, done by putting a supplementary load on the motor. Interaction of magnetic fields creates an adjustable or variable direct current in stator coils, this starts currents in the rotor, which is how this loading happens.

Brake, Holding or Parking: Brake that automatically sets and prevents motion when power is off.

Brake, Mechanical Load: Friction device used for multiple discs or shoes, used to control load speed in only the lowering direction. The brake stops the load from overhauling the motor.

Braking, counter torque: See counter torque. 

Breaking Strength: Measured tensile load needed to make cable, chain, wire rope or any other load-bearing element break.

Breaking Strength/Ultimate Strength: Average force at which a product, like a roundsling, (in the condition it would leave manufacturing) has been found by testing to break when growing force is applied, at a uniform rate of speed on a standard pull testing machine.

Bridge Travel: Crane travelling horizontally and parallel with bridge runway rails.

Bridge Trucks: Assembly made up of wheels, bearings, axles and structural framework that supports the end reactions of bridge girders.

Bridle Sling: Sling made of multiple wire rope legs with a fitting that attaches to the lifting hook.

Bright Rope: Wire rope made of wires that aren’t coated with zinc or tin.

Brooming: Unlaying and making wire ropes’ strands and wires straight at the end while installing a wire rope socket.

Bull Ring: The main, large ring of a sling where the sling’s legs are attached. This is also called the master link.

Bulldog Clip: Wire rope cable clamp, or clip.

Bumper or Buffer: Energy-absorbing device that reduces impact when two moving cranes or trolleys meet, or when they meet the end of its travel.

Cab: The operator’s compartment on a crane.

Cable: Term used to refer to wire ropes, wire strand and electrical conductors.

Cable Crowd Rope: Wire rope used to force the bucket of a power shovel into material being handled.

Cable-Laid Wire Rope: Wire rope made up of several individual wire ropes wrapped around a wire rope core or fiber.

Cable Laid Grommet-Hand Tucked: An endless wire rope sling made from one length of rope, wrapped around the core by hand, six times. The ends of the rope tuck inside the six wraps.

Cable Laid Rope: Wire rope made of six wire ropes wrapped around a fiber or core. hercules-slr-securing-lifting-rigging

Cable Laid Rope Sling: This mechanical joint is made via a wire rope sling from a cable laid rope. It has eyes fabricated by pressing, or swaging one or more metal sleeves over the rope junction.

Cableway, Aerial: Conveying system for transporting single loads along a suspended track cable.

Camber: The slight curve given to beams and girders to compensate for deflections caused by loading.

Cheek Plate(s): Stationary plate that supports the pin (axle) of a sheave or load when rigging.

Cheek Weights: Overhauling weights attached to side plates of a lower load block.

Chinese Finger: Wire mesh pulling grip. Normally, a line is inserted through the wire rope, and it tightens around the line when pulling force is applied.

Choker Sling: Wire rope with eyes spliced on each end. Used to lift the load.

Choker Hitch: Sling set-up with one end of the sling passing under the load and through an end attachment, handle or eye on the other end of the sling.

Clearance: The horizontal or vertical distance from any part of the crane to a point of the nearest obstruction (the area you can ‘clear’).

Clevis: U-shaped fitting with holes in each end where a pin or bolt is run through.

Clip: Fitting to clamp two parts of wire rope.

Closed Socket: Wire rope end fitting made of basket and bail.

Closing line: Wire rope that closes a clamshell or orange-peel bucket, and then operates as a hoisting rope.

CMAA: Crane Manufacturers Association of America

CMV: Commercial Motor Vehicle

Coil: Circular bundle of wire or fiber rope not packed on a reel.

Collector: Contact device that mounts on bridge or trolley to collect current from the conductor system.

Come-along: Lever-operated chain or wire rope devices designed for pulling, not lifting; also called pullers. Unlike hoists, the tension is held by a releasable ratchet. They are smaller and lighter than hoists of equal capacity, and aren’t meant to lift, but meant for activities like skidding machinery.

Conductors (Bridge or Runway): Electrical conductors located along the bridge girder, or runway that provide power and/or control circuits to the crane and trolley.

Conical Drum: Grooved hoisting drum of tapering diameter.

Continuous Bend: Reeving of wire rope over sheaves and drums so that it bends in one direction, as opposed to reverse bend.

Control Braking: A method of controlling hoisting or lowering speed of the load by removing energy from the moving load or by imparting energy in the opposite direction.

Controller: A device or group of devices that serve to govern, in some predetermined manner, the power delivered to the motor to which it is connected.

Controller (Spring Return): A controller which, when released, will return automatically to a neutral position.

Control Panel: An assembly of magnetic or static electrical components that govern the flow of power to, or from a motor. These respond to signals from a master switch, push-button station, or remote control.

Core: Member of wire rope round which the strands are laid. This could be fiber, a wire strand, or an independent wire rope.

Corrosion: Chemical decomposition caused by exposure to moisture, acids or alkalis.

Corrugated: A term used to describe the grooves of a sheave or drum when worn so as to show the impression of a wire rope.

Cover plate: The top or bottom plate of a box girder or junction box.

Crane: A machine for lifting and lowering a load vertically and moving it horizontally; the hoisting mechanism is an integral part of the machine. The term applies to fixed , mobile, powered or manually-driven machines.

Cranes are another group of definitions entirely! Really—click here to read our ‘Cranes’ Glossary.

Hercules SLR will continue our ‘Rigging Glossary’ with rigging terms in the alphabet D-Z—check our ‘Blog’ page for future rigging glossaries, and to read our ‘Crane Glossary’.

Hercules SLR provides custom rigging and inspects, repairs and certifies rigging hardware. Head to our  ‘Inspections & Repairs’ page for more information, or e-mail

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.