Even slightly damaged slings are highly likely to fail during rigging. Consult the sling manufacturer for proper retirement criteria for polyester round slings Following are examples of damage typically caused suppliers of synthetic web slings and tie downs, load securement devices, roundslings, synthetic webbing, fibers, thread and related components. A specific procedure for the inspection of synthetic slings is your best safeguard against sling damage and abuse. From cuts and abrasions, to chemical and heat damage, there are several factors that can lead to a damaged sling. Synthetic Web Slings: Synthetic web slings offer a number of advantages for rigging purposes. In other words, sling inspection is a must before each use. Synthetic web slings are made using polyester flat webbing and are the preferred sling when lifting highly-polished, fragile or delicate loads that have to be protected from damage. Crushed webbing or embedded particles. Long-term exposure to sunlight or ultraviolet radiation can affect the strength of synthetic webbing slings. Defective fittings (twisted, corroded, cracked, etc.) Did You Know? Damaged Synthetic Slings. Steam cleaning at temperatures in excess of 194F/90C can damage the sling. Synthetic lifting slings are most susceptible to cuts, rips, abrasion, and tears. Corner protectors, wear pads, or edge guards should be used to protect nylon and polyester web slings against abrasion and cuts when lifting materials with edges. Synthetic Web Sling Inspection Items. The WSTDA's mission is to minor damage to a web sling can significantly reduce its capacity to hold or lift objects and increases the chance that the sling will fail during use. The strength of synthetic webbing slings can be degraded by chemically active environments. Cuts or Tears . They are also less likely than other types to damage delicate loads or polished surfaces. The stitch patterns in web slings have been 1. Synthetic Slings & UV Damage | Fulcrum Lifting What kind of damage makes a synthetic web-sling unusable? Bleached sling color. Several of the most commonly used synthetic web slings are manufactured with nylon or polyester. more susceptible to environmental damage, including extreme temperatures, chemical exposure, and UV Melted, burned or weld spatter damage. 7). Far too many web slings have been discarded prematurely simply because abusive and careless work habits caused irreparable damage. Following are examples of damage typically caused by abuse and misuse. Provision for storing synthetic slings are an effective way to improve the life of a sling. Slings with excessive broken wires, severe corrosion, localized wear, damage to end-fittings (e.g., hooks, rings, links, or collars), or damage to the rope structure (e.g., kinks, bird caging, distortion) must be removed from service and discarded. Web slings are the most versatile which can damage and weaken the strength of the sling. Free of all sharp edges that could in any way damage the webbing. Table 2. Synthetic web slings have an advantage over alloy chain slings and wire rope slings because of their overall weight. Reading the facts about web slings should help you decide. Crushed webbing or imbedded particles. Synthetic Slings Must Be Inspected Before Each Use. Wire rope slings must be visually inspected before use. The sling is attached to the lifting device by a tapered eye. At a recent I&I Sling rigging seminar I attended, the class reviewed test data illustrating just how bad UV can be on synthetic slings (both web and round slings). Melted or burned areas. Acid or caustic burns. Due to their extreme flexibility and softness, synthetic web slings are the Holes/Punctures . Chemical. Synthetic Sling Information - Nylon and Polyester Sling Information. Long-term exposure to sunlight or ultraviolet radiation can affect the strength of polyester round slings. Montreal. 1926.251(e)(5) Attachment of end fittings to webbing and formation of eyes. Knots should never be used to shorten or tie together To accommodate the lifting device, a sling can have flat or twisted edges. A synthetic web sling is a lifting assembly made from synthetic webbing. SLING USERS MUST BE TRAINED AND KNOWLEDGEABLE Sling users must be knowledgeable about the safe and proper use of slings and be aware of their responsibilities as outlined in all applicable standards and regulations. edges, rough surfaces, heat, chemical exposure, and UV light degradation! While both types of slings are versatile, polyester is more resistant to chemical damage. Bleached sling color Holes, tears, cuts and snags. Sling should be protected from mechanical, chemical and environmental damage. Cleaning of Sling made from Synthetic Materials Author: Lift-All Subject: Technical Bulletin G-31 Keywords: sling cleaning, synthetic sling cleaning, sling cleaning process, sling drying, nylon slings, polyester synthetic slings, aramid slings, keyflex roundslings, technora, kevlar Created Date: 9/15/2016 3:11:17 PM The foreign material can cause We recommend that you employ a three stage The most commonly used synthetic web slings are made of nylon- or polyester-type yarns (Fig. Melting or For specific applications, consult the Snags . Other conditions that cause doubt as to continued use of a sling. Removal criteria established by ANSI B30.9. Inspection of Slings. Increased stiffness of sling material. addition, water absorption can decrease the strength of nylon web slings by as much as 1015% (its strength returns when the sling dries completely). Stitching shall be the only method used to attach end fittings to webbing and to form eyes. Long-term exposure to sunlight or ultraviolet radiation can affect the strength of synthetic webbing slings. Consult the sling manufacturer for proper retirement criteria for synthetic webbing slings subjected to long-term storage or use in sunlight. The strength of synthetic webbing slings can be degraded by chemically active environments. Because they are made from synthetic fibers, such as nylon or polyester, these slings are susceptible to cuts or abrasions from rough or sharp objects. Burned Sling Knots and broken or worn stitching Misuse can cause conditions to the slings that will be noticeable during an inspection. Slings being used beyond the rated load capacity remove from service. Other conditions, including visible damage, that cause doubt to the continued use of the sling ASME B30.9 standards specify that a synthetic web sling shall be removed from service immediately if any of the following conditions are present: Sharp Edges: Cuts, punctures and abrasions can reduce the strength of the sling. Any conditions which cause doubt as to the strength of the web sling. Holes, tears, cuts, Consult the sling manufacturer for proper retirement criteria for synthetic webbing slings subjected to long-term storage or use in sunlight. Types of damage you should look and feel for in web slings. When to replace synthetic web slings. Damaged Twin-Path sling: Frayed sling edge: Frayed sling splice: Damaged sling tag: Excessive abrasion: Outer cover damage: Cuts and frayed webbing: Damaged beyond belief: Damage at the triangle: Round sling damage: Sewing thread abrasion: Edge damage at fitting: Edmonton. When a lift is made at the W.L.L., the user can expect Far too many web slings have been discarded prematurely simply because abusive and careless work habits caused irreparable damage. Knots in any part of the sling. Increased stiffness of the material. Nylon Other than these two materials, there are other materials that may be used to create the slings. Ultraviolet Light: Prolonged exposure to Inspecting a web lifting sling for damage before each use protects the load you are lifting and the people working on the job site. x. 2020-10-14 SHARE. Exposure to extreme temperatures (lower than -40C or higher than 90C) Hercules SLR offers inspections for securing, rigging, and lifting equipment. Mississauga. Synthetic Slings: Murphy Industrial Products, Inc. stocks over 10,000 synthetic round slings, synthetic lifting slings and custom lifting straps that are built to handle any lifting application you can think of. Types of web slings and their uses and characteristics, rated capacity and the effect of angles, sling safety information, Twin-Path sling information. Even seemingly minor damage to a web sling can significantly reduce its capacity to hold or lift objects and increases the chance that the sling will fail during use. Fiber Rope and Synthetic Web If an identification tag is missing or illegible- remove from service. The question often asked to the LES USA team "When Should I Replace My Synthetic Webbing and Round Slings?" Excessive is a standard to some and a mystery to others. Synthetic Web Slings Web slings are flat belt straps made of webbing material and most commonly feature fittings, or flat or twisted eyes, on each end. Synthetic web slings are popular because they are lightweight and flexible to form to the shape of a load. Remove all slings from service if you see damage. The red inner load-bearing yarns help identify damaged webbing. Acid or caustic burns. THE DAMAGE: Broken/Worn Stitching in the main stitch patterns of web slings has a direct adverse effect on the strength of a sling. Power or pressure washing can force residue inside web and yarn fibers.