FLEXIBLE INTERMEDIATE
BULK CONTAINERS SPECIFICATIONS
North America
June 2011
MAT/SF/Q
FLEXIBLE INTERMEDIATE BULK CONTAINERS SPECIFICATION
1.
Purpo
The purpo of this specification is to establish the safety, quality, and dimensional requirements for
Flexible Intermediate Bulk Containers (FIBC’s) ud by Michelin/BFG Plants in North America.
2.
Scope and Responsibility
This specification applies to all suppliers of Michelin/BFG Plants in North America utilizing single trip FIBC’s.
IEC/ISO 61340-4-4:2005 is the international standard for FIBC’s such as, labeling, performance, test methods, and test reports. It should be ud in conjunction with this Michelin/BFG FIBC specification document.
ISO 16101, ISO 16103, ISO 16106, and ISO 16883 are standards which cover the transport packaging for dangerous goods月球
Responsibility for ensuring that FIBC’s utilized by Michelin/BFG Plants in North America meet and maintain compliance with this specification rests with the Individual Raw Material Buyers, and Plant Reception Personnel . Technical assistance to the plants and the suppliers will be provided by DTM/RF (Product Specialists) and CPSF-Z (Process Specialists).
The chemical supplier is responsible for providing a product that is high quality, contamination free, and with consistent product form. The product must be supplied in a safe and suitable FIBC for the product. The FIBC type should be chon bad on the MIE of the product. The geometry of the FIBC should be lected bad on product form and by utilizing the ‘Choosing Appropriate Spout Diameter’ chart. Products delivered with damaged FIBC’s, will be rejected and returned unud, at the suppliers cost, due to safety and contamination risks. FIBC’s are to be thoroughly inspected prior to filling by the chemical supplier. The FIBC’s are designated for one specific product and supplier. The chemical supplier is responsible for obtaining approval of their FIBC prior to shipping product. Any deviations from this specification must be prior approved in writing by CPSF-Z.
4.
Definitions
FIBC
An acronym for Flexible Intermediate Bulk Containers. The collapsible containers are normally made of woven polypropylene fabric and ud for bulk shipments of non-liquid products.
Common names:
Super Sac and Big Bag.
MIE
The Minimum Ignition Energy is the lowest spark energy capable of igniting a sample when disperd in the form of a dust cloud
5.
Safety
5.1
MIE (Minimum Ignition Energy)
The MIE number is ud to choo the correct type of FIBC that chemicals should go in. If the product can generate dust or fines of < 420 µm in size, the supplier must have the dust analyzed by a
Plant Requirements
M or R
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certified lab. If the product is inert the MIE test is not required, examples include: talc, clay, and Zinc Oxide. If product is potentially explosible in dust form, the product must be tested to find MIE.
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MIE testing should be followed in accordance with American Society for Testing and Materials (ASTM) E2019
5.2 Choosing the Correct FIBC Type
The MIE number is ud to choo the correct type of FIBC. U the chart below to determine what the appropriate type FIBC should be.
Choosing Type of FIBC
MIE of Powder Explosive Dust Atmosphere (zone 20*, 21**, or 22***)
Inert Powder Type B
MIE > 3 mJ Type B, C, D, or CD
0.14 mJ < MIE ≤ 3 mJ Type C, D, or CD
Refer to Appendix A for different FIBC types.
5.3 Lifting Safety Factor And Weight Limits
Safety factor of 6/1 for a load of 1000kg (in accordance with US DOT)
5.4 Product Handling Information And Hazard Labels
A Product Handling Label / Hazard Label must be attached at the top of every FIBC entering a
Michelin/BFG Plant in North America. The labels must be clearly visible, either in a parate data
pouch, or permanently marked on the FIBC, not on a label attached to the shrink wrap. The label
should have information about product handling, storage, first aid, spills, fires, HMIS rating, and
instructions of how to ground the FIBC if applicable, as required by regulations (WHMIS, etc.).
For type C FIBC the phra, “FIBC must be grounded prior to opening” must be printed in big bold
letters on two sides of the FIBC.
For all FIBCs, net weight must be mentioned.
6. FIBC Construction
6.1 Fabric
- Woven polypropylene with heat fud non-breathable polypropylene coating.
-
Fabric Color should be white. (DO NOT USE BLACK OR BLUE)
- Leak proof ams. Product should not leak out of stitching ams.
- No loo threads.
Refer to Appendix B for different examples of leak proof ams.
6.2 Body Dimensions
- “C” Ba - 1.0 m x 1.0 m (40 in. x 40 in.) maximum allowable.
- “D” Height - 1.75 m (70 in.) maximum allowable.
Supplier should minimize height to match bulk density and maximize weight per FIBC to optimize shipping
expens.
Note: SPECIAL APPLICATION US-2 ANDERSON S.C.
CBS, TBBS, and DCBS
- “D”Height - 2m (80 in.) maximum allowable.
Carbon Black and Silica
- “D” Height - 2.1m (84in) maximum allowable.
Flat Bottom with Body Dimensions Funnel Bottom with Body Dimensions
6.3 Bottom of Bag
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Flat All FIBCs will be flat bottomed unless specified
SPECIAL APPLICATION: Sulfur and Insoluble Sulfur products will be funnel bottomed with a flap
closure
Funnel 405 mm (16 in.) ± 1 in length (anti-bridge bottom).
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Refer to Appendix B for dimensional drawings of flat bottom with X- closure and funnel bottom with
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flap closure as well as pictures.
6.4 Baffles
- Baffles must be included if FIBC is over 70 inches in height
- Holes must be either cut with a hot knife or wn to prevent loo threads
Top View of FIBC with Baffles Picture of FIBC with Baffles
6.5 Lifting Straps
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- The FIBC shall be fitted with 4 lifting straps, one fitted to each of the upper corners.
- “A” Width - 35mm to 75 mm (1.4 to 3.0 in.)
- “B” Height - 250 mm + 10 mm (10 in. + 0.5 in.). It is important that the 10 in loop is measured from the top of the FIBC not where the stitching ends on the side of the FIBC.
Pictures of Good Lifting Straps Diagram of Lifting Straps
6.6 Fill Spout
- Located on top of FIBC as required to allow tight closure of the spout.
- One way FIBC’s may u a fabric closure tied in a knot. This closure must be curely wn to the FIBC and not have any loo threads or frayed ends.
Picture of Good Fill Spout Diagram of Fill Spout
6.7 Discharge Spout
- Spout diameter: 406 mm (16 in.) or 510 mm (20 in.)
See “Choosing Appropriate Spout Diameter” chart below to determine appropriate diameter of spout.
- Spout length: 405 mm (16 in.).
Choosing Appropriate Spout Diameter
16" Spout Diameter 20" Spout Diameter 20" Spout Diameter
Flat Bottomed Flat Bottomed Funnel Bottomed
X-Closure X-Closure Flap Closure
•Product flows well after ttling in Big Bag for over 2 weeks •Product does not flow
well after ttling in Big田赛项目
Bag for over 2 weeks
•Product tends to compact
once in Big Bag
•No bridging across spout opening •Product tends to bridge
across spout opening
缺陷美•Product tends to bridge
•Product does not tend to re-agglomerate •Product tends to re-
agglomerate at higher
temperatures
•Product tends to re-
agglomerate •Example: Waxes
•Example: Sulfur, Zinc
Oxide
*NOTE: IF THE PROPERTIES OF PRODUCT CHANGE DEPENDING ON TEMPERATURE OR HUMIDITY, USE SUITABLE FIBC FOR WORST POSSIBLE CONDITION.
Refer to Appendix C for FIBC dimensional drawings of flat bottom with X- closure and funnel bottom with flap closure.
6.8 Discharge Spout Closure
- All discharge spouts will be clod using a Velcro strap
- Lifting strap material: 50 mm (2 in.) wide x 76.2 cm (2.5 ft) long
- Loop wn in end of strap to allow for easy opening
- 2 Velcro strips: 50 mm (2 in.) wide x 12.7 cm (5 in.) length
- The strips are to be wn to the strap to allow tight closure of the spout.
- The Velcro strips should be wn to strap around all four sides
- Strap must be curely wn to spout
- Placement of closure on discharge spout to be 305 mm (12 in.) from bottom of spout. This is critical for safe closure.
- The closure system must be easy to open, formed integrally with the FIBC and there must be no risk of it becoming detached (fully or partially) when opened.
Refer to Appendix C for FIBC dimensional drawings of Velcro strap
