FIBC Classification

FIBC Types

FIBC Classification Type A, B, C, D

Bulk product in FIBC	Surrounding
MIE of dust	Non-flammable atmosphere	Dust zones 21-22 (1000 mJ ≥ MIE > 3 mJ)	Gas zones 1-2 (Groups IIA/IIB) or Dust zones 21-22 (MIE ≤ 3mJ)
MIE > 1000 mJ	A, B, C, D	B, C, D	C, D
1000 mJ ≥ MIE > 3 mJ	B, C, D	B, C, D	C, D
MIE ≤ 3 mJ	C, D	C, D	C, D

Bulk product in FIBC

Surrounding

MIE of dust

Non-flammable atmosphere

Dust zones 21-22
(1000 mJ ≥ MIE > 3 mJ)

Gas zones 1-2 (Groups IIA/IIB) or
Dust zones 21-22 (MIE ≤ 3mJ)

MIE > 1000 mJ

A, B, C, D

B, C, D

C, D

1000 mJ ≥ MIE > 3 mJ

B, C, D

C, D

MIE ≤ 3 mJ

C, D

FIBC Type A

Bulk Bag - Type A FIBC - No Static Protection - Insulating - Non-Conductive

Plain Bag - No Static Protection
Safe use:

To transport non-flammable products
No flammable solvents or gases present around the bag

Do not use:

To transport flammable products
When flammable solvents or gases are present around the bag

FIBC Type B

Bulk Bag - Type B FIBC - Low Breakdown Voltage - Not Inherently Antistatic - Cannot replace Type D

Plain Bag - Low Breakdown Voltage

Prevents Propagating Brush Discharges
Safe use:

To transport dry, flammable powders
No flammable solvents or gases present around the bag

Do not use:

When flammable solvents or gases are present around the bag

FIBC Type C

Bulk Bag - Conductive Groundable Type C FIBC - Must be Grounded/Earthed - Can be safely substituted by Type D

Interconnected Conductive Threads Dissipates Charge to Ground R_G < 10⁸ ohm

Safe use:

To transport flammable powders
When flammable solvents or gases are present around the bag

Do not use:

When ground connection is not present or has become damaged

FIBC Type D

Does Not Require Grounding/Earthing

Safe use:

To transport flammable powders
When flammable solvents or gases are present around the bag

Do Not Use:

When the surface is heavily contaminated or coated with conductive material such as water or grease

Note: There is no official standard classification, "Groundable Type D", D+, Dplus or CD. IEC 61340-4-4 Ed. 2.0 & Ed. 3.0 do not permit FIBC to be labelled as D+, CD, etc. Only the official classifications, i.e. Type A, Type B, Type C or Type D can be indicated on FIBC labels. One FIBC cannot be simultaneously classed as more than one type. So, for example, classing FIBC as both Type C and Type D, or labelling as C/D, etc. is not permitted by IEC 61340-4-4 Ed. 2.0 or Ed. 3.0.