Synthetic Fiber Slings: Synthetic Fiber Web Slings are easily cut and have poor abrasion resistance when compared with chain and wire rope slings. It is important to use slings made of the right material for job. Nylon slings are damage by acids, but resist caustics. Polyester slings are damage by caustic, but resist acids. Sunlight, moisture and temperature above 900 Celsius damage both nylon and polyester slings. Subsection-1 Figure visually shows the rejection criteria stated in this subsection. Damage slings must be permanently removed from service to prevent further use.

Examples of Synthetic Web Slings Rejection Criteria

Subsection-2 Acid and caustic heat burns, broken stitching in load-bearing splices, and damage eyes and end fittings all affects the load – carrying capability of slings. Damage slings be permanently removed from services and physically altered to prevent further use.

Subsection-3 If no single type pf damage exceeds the specified limits, the employer must consider the sum of the individual effect of the various types of damage. If this is approximately equivalent to the effect from a single type of damage, the slings must permanently removed from service and physically altered to prevent further use.

Subsection-4 A synthetic fiber web slings that is permanently removed from service must be physically altered its further use. The simplest way to do this is to cut slings into many small, unusable pieces. The pieces should be disposed of immediately.

Type Of Inspection
Slings Type What to look for How often
  Intial . Verify correct slings is being used Prior to first as new or repaired
Synthetic webbing Frequent . Acid or caustic burns
. Melting or charring
. Hotels, tears, cuts, snags
. Broken / worn stitching in load-bearing splices
. Excessive pitting or corrosion, or cracked, distorted or broken fittings
. Other visible damage
. Missing/illegible markings
  Periodic 1
Same as of ‘Frequent’’ inspection
Based on how often the sling is used and severity of service conditions, but at least annually.
  Initial 0
Verify correct slings is beings used
Prior to first use as new, altered, modified or repaired
Synthetic roundsling
Frequent (records not required) . Melting or charring
. Holes, tears, cuts, abrasive wear, Snags, exposed core yarns
. Damaged, stretched, cracked, Worn, pitted, distorted fittings
. Knotting
. Other visible damage
. Missing/illegible markings
. *Normal services-daily
. *Services services-each use
. *Special services-as Recommended by Qualified person
  Periodic (recorded As basis for continued use) . Same as for ‘’Frequent’’ inspection .*Normal services-daily
.*Severe services-each use
.*Special services-as Recommended by qualified person

*Types of slings services:

. Normal – involves use of loads within maximum load rating
. Severe – involves normal services coupled with abnormal operating conditions.
. Special – involves operation, other than normal or severe, that normal or severe, that is recommended by a ‘’qualified person’’