Synthetic Sling Inspection Criteria

Inspection Categories for Synthetic Slings

Inspecting synthetic slings is vital to maintain safety during lifting operations. Below are key damage indicators to monitor:

• Acid Damage
• Heat Damage
• Cuts
• Cut & Tensile Damage
• Abrasion Damage
• Face Cuts
• Punctures & Snags
• Tensile Break
• Illegible or Missing Tag

Criteria for Evaluation of Synthetic Web Slings

Refer to the examples of damaged webbing. Remove slings from service immediately if any of the following issues are identified:

• Capacity tag is missing or hard to read
• Sling displays signs of melting, charring, or chemical damage
• End fittings are excessively pitted, corroded, distorted, cracked, or broken
• Cuts present on the face or edge of the webbing
• Holes, tears, snags, or crushed areas on the web
• Signs of excessive wear due to abrasions
• Worn or broken threads affecting stitch patterns
• Any visible damage leading to concerns regarding its strength

Common Examples of Sling Abuse

The damages highlighted can result in immediate and catastrophic failures of the sling. Although some damages may not be visibly extreme, any sign of wear or compromise warrants removal from use.

Understanding Elasticity

The stretch characteristics of web slings rely on yarn type and web finish. Approximate stretch at RATED SLING CAPACITY is:

NYLON
Treated: 10%
Untreated: 6%

POLYESTER
Treated: 7%
Untreated: 3%

Environmental Considerations

• Nylon and polyester begin significant deterioration when temperatures exceed 194°F (90°C).
• Extended exposure to ultraviolet light negatively impacts both materials, leading to bleaching and stiffness.
• Many chemicals can adversely influence nylon and polyester. Refer to the Chemical chart provided below.

Chemical Environment Data

This is a general guideline. For precise temperature, concentration, and duration factors, always consult with Certified Slings & Supply prior to purchasing or using products.

Web Sling Inspection Process

Implementing a systematic procedure for sling inspection is crucial to minimize risks of injury, death, and property damage. Employ a three-tiered inspection process to ensure appropriate frequency and thoroughness, managed by trained and qualified personnel.

To identify potential damage, perform a complete visual inspection of the sling. Additionally, feel along the entire length, as certain damages may only be detectable through tactile observation. Refer to the "Removal from Service" criteria for conditions that require immediate attention.

If any damage is detected, remove the sling from service immediately, even if the visible damage seems minor. Any sling needing removal must be destroyed or rendered completely unusable unless it can be repaired and tested by the manufacturer. Avoid ignoring sling damage or attempting temporary field repairs, as this can further compromise safety.

Inspection Levels

1. Initial Inspection

According to the Web Sling and Tie Down Association, the initial inspection occurs before any new or repaired sling is utilized. A qualified person must verify that the correct sling is being used and confirm it meets applicable standards.

The initial inspection should be conducted upon receipt to check for transit damage and ensure products conform to manufacturers' specifications. Recordkeeping at this stage is not mandatory, but if maintained, it should begin here.

2. Frequent Inspection

This level involves daily inspection of the sling by either the user or another designated personnel before each shift under normal conditions. In severe conditions, inspect before each use. ASME and OSHA regulations state that a competent person must check slings and fastenings for damages at the beginning of each workday.

A qualified individual must ensure suitability of the sling for intended use, hitch, load, and environment. Written records are not necessary for this level of inspection.

3. Periodic Inspection

Periodic inspections must be conducted periodically by designated personnel at regular intervals. For effective periodic inspections, they should be performed by different personnel than those conducting frequent inspections.

Inspection intervals should not exceed one year, with ASME guidelines recommending:

• Normal Service - Annually
• Severe Service - Monthly to Quarterly
• Special Service - As advised by a qualified person

Maintain written records of the latest periodic inspection. If required by your employer or industry, include details on sling conditions. It's essential that slings receive proper identification or tracking to guarantee periodic inspections are recorded.

A designated person is selected or assigned by the employer and is deemed capable of performing specific duties. A qualified person possesses recognized qualifications, extensive knowledge, training, and experience to solve problems related to sling usage.

Conclusion

For more information on Webbing Lifting Slings, or any inquiries, feel free to reach out.

Thoroughly inspect slings and attachments by checking for:

• Missing or unintelligible identification
• Burns caused by acids or caustics
• Signs of melting or charring
• Holes, cuts, or snags
• Worn stitching in critical splices
• Excessive wear
• Knotting in the sling
• Signs of brittleness or discoloration
• Deformed or damaged fittings
• Other visible issues affecting sling usability

Immediate removal from service is necessary where such damage is detected. For additional details about safe lifting, check Monorail Beam Trolley.