People have to take seriously with workplace injuries. Non-fatal workplace injuries and diseases with employees take place every day in all over the world. Fortunately, in industries which use FIBCs, also known as bulk bags, big bags with strictly SWL help to reduce the rate of workplace injuries.

The SWL( safe working load) of FIBCs is the maximum safe carrying capacity. For example, 1000kgs of SWL means maximum safe carrying capacity is 1000kgs.

The SF(safety factor) of FIBCs is usually 5:1 or even 6:1. Especially for UN bulk bag, the SF of 5:1 is one of the necessary conditions.

Manufacturers adopt peak load test to determine the SF. During the peak load test, big bag with SF of 5:1 must hold up under 5 times the SWL after being through 30 cycles of 2 times the SWL. For example, if the SWL is 1000kgs, the bulk bags will pass the test only if it can hold up to 5000kgs of pressure, then undergoing the cyclic test at 2000kgs of pressure 30 times.

Meanwhile, bulk bag with 6:1 of SF is more rigorous. It must be able to hold up to 6 times the SWL after being through 70 cycles of 3 times the SWL. In this situation, if the SWL is also 1000kgs, the bulk bags would pass the test when hold up to 6000kgs pressure, then undergoing the cyclic test at 3000kgs of pressure 70 times.

SWL is important part to create a hazard-free workplace. It should be noticed that the workers must obey the SWL during operation including filling, discharging, transportation and store.

What are SWL and SF for FIBCs

Post time: Sep-08-2021