Static Electricity in FIBCs-Rishi FIBC Solutions

Storing Combustible Products Affected by Static Electricity in FIBCs

What prevents the storage of combustible items in FIBCs?

Static electricity can be produced at the time of filling or discharging the bulk bags as a result of the movement of powdered substances. During the storage or transportation of combustible or flammable items, this static electricity that is built up can be so dangerous as to be a hanging point between life and death. However, to ensure one’s safety, there are four kinds of bags available with safe and unsafe features while handling dangerous items and carefully tackling the static electricity.

Type A bags

Made with polypropylene and other fabrics that are conducive in nature, these bags do not provide any protection against static electricity and these are not at all safe for either storing or transporting flammable and combustible objects. Therefore, there are certain precautions to be taken which are as follows:

  • Products should be non-flammable in nature.
  • Avoid using this type of bags where gases or flammable solvents are present nearby.
  • In a situation where the least energy for ignition is less than 1,000m, these bags are not at all suitable and hence are best to be avoided.

Type B bags

The material used for type B bags is similar to that used for type A as well. In fact, quite similar to the type A bag, type B also cannot protect against the flow of static energy. However, an added material is added to its formation which a breakdown voltage that is low, enabling the bags to sustain during hazardous Propagating Brush Discharges. Yet, they are not termed as ‘anti-static’ in nature. Following precautions are essential to keep in mind while using these bags:

  • To not use any gases or solvents near the bag that is flammable in nature.
  • Chances of less dangerous electrostatic shocks are likely to happen to operators, get prepared against that.
  • Not to be used in any environment where the dust or the ignition energy exceeds 3mJ.

Type C bags

These bags are made with a material of non-conducive polypropylene fabrics in a grid pattern. The threads are connected electrically and kept on the ground while filling or discharging. The precautionary measures for using these kinds of bags are as follows:

  • It is to be made sure that the ground connection is there and it has not got disconnected by any chance during refill or discharge.
  • From the allotted grounding point, it should necessarily have a resistance from other location bags.

Take a look at our blog for more information: Type C FIBC – Rishi FIBC

Type D bags

Against any sudden sparks, brush discharges or Propagating Brush Discharges, the type D bags are fully safe since they are made with anti-static material and fabrics to dissipate static electricity. These types of bags are safe against most human errors. Only precautionary measure is:

It is to be checked before use that the lower surface of the bag doesn’t contain any flammable or conducive items or even grease.

Read more: Type D FIBC – Properties & Specifications

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Know About UN FIBC Bags-Rishi FIBC Solutions

All You Need To Know About UN FIBC Bags

Introducing UN bulk bags or FIBCs

A general FIBC bag is not suitable for either storing or transporting materials that are hazardous in nature. Standard bags are made with polypropylene and are resistant from any sort of chemicals. Certain chemicals are way too corrosive and standardized bags are incapable to hold that substance. To deal with these circumstances, UN bags have tested, identified and labelled a quality of bags that are apt.

What are UN bulk bags?

Where standard bags fail, UN bulk bags comes in rescue. It is a specialized bag or a kind of container which is mediate and flexible to carry hazardous material, store as well as transport them. There are certain rules following which these bags are made by the UN under strict supervision. UN classification include:

  • Put to intense test before use.
  • The maximum volume is mentioned.
  • Properly identified, labelled and tagged of the objects to carry.

Only after all these requirements are met, a bag can be termed as UN bulk bag.

Read more: What is UN Bags Rated Bags?

Labelled in accordance to hazardous materials

These bags are labelled by the type of hazardous materials that they carry which are as classified below:

  • Class 4.1 is capable of carrying solids that are flammable, desensitized explosive objects and elements that are self-reactive.
  • Substances that bear the nature of self-combustion fall under Class 4.2 UN bags.
  • Class 4.3 bags are made in such a way as to carry elements that release flammable gases when in touch with water.
  • Elements that are prone to oxidation can be carried in bags labelled under Class 5.1.
  • Class 5.2 bags are suitable for carrying substances with organic peroxides.
  • Class 6.1 can carry all sorts of elements that are extremely toxic in nature and need to be handled very safely.
  • Elements that can be corrosive are best stored and transported within bags under Class 8.
  • Any other form of substances that are hazardous or dangerous in their reactive nature can be safely carried in Class 9 UN bags.

The foremost thing is to determine the specific object that you are carrying in order to identify which UN bulk bag do you require. Ask your supplier beforehand and figure out if you have chosen the right bag for the intended purpose of use.


How are FIBC bags tested before use?

The contents that UN bags carry can sometimes be too dangerous or volatile in nature. Hence, an extreme testing procedure is a mandate before it can be actually put to use. A one-hour vibration test followed by side or top lift for next five minutes is what the testing procedure begins with. Then next procedure is a stacking test to check whether it loses contents or not followed by a drop test taken from a number of different heights. A topple test is then conducted on any part of the top without the loss of contents. With FIBC on its side the bag is lifted into the upright position to check if there is any kind of damage done to the bag. The ultimate test is the knife test where it is checked that the bag should not increase more than 25 percent of its original length.

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