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Technical Note 133:
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CROHMIQ
Static Protective FIBC Fabrics are designed and engineered to provide
the highest level of safety demanded by industry without the need for
grounding.
Static charge is dissipated
safely by CROHMIQ fabric, thereby eliminating the risks associated with
operator grounding errors and other Type C FIBC risks.
The
safety of CROHMIQ FIBC when operated ungrounded is proven and qualified
by testing in accordance with the International Standard IEC
61340-4-4:2005.
CROHMIQ FIBC meet the requirements for Type D FIBC as specified in CLC/TR 50404:2003 and NFPA 654:2006.
In
some end user applications, the standard operating procedure is to
ground all FIBC irrespective of type. In such applications, end users
may require the presence of one or more tags on the FIBC to provide
designated grounding points. The purpose of this Technical Note is to
set out the requirements for grounding tags that may be attached to
CROHMIQ FIBC.
There are a number of key facts to note:
- CROHMIQ FIBC do not need to be grounded in order to operate safely, but they can be grounded if standard operating procedures require this.
- Grounding CROHMIQ FIBC does not have a detrimental effect on the static protective properties of the fabric.
- Grounding CROHMIQ FIBC will reduce the already safe and low residual charge that may be present on the FIBC during filling and emptying operations.
- Like all Type D FIBC, the resistance to ground of CROHMIQ FIBC is greater than 108 Ω and so they cannot be used as Type C.
The requirements for grounding tags on CROHMIQ FIBC are as follows:
- One or more grounding tags may be attached to any part of the FIBC that is convenient and accessible during normal operations.
- There is no size limit for grounding tags made from approved materials.
- CROHMIQ fabric is the preferred material for grounding tags on CROHMIQ FIBC.
- Other materials may be used for grounding tags on CROHMIQ FIBC, only after they have been tested and specifically approved by Texene.
- Conductive material (e.g. black conductive plastic, metal braid, etc.) must not be used to make grounding tags for CROHMIQ FIBC.
TEXENE LLC is a leading manufacturer of technical textiles focused on delivering precision engineered, safety performance products worldwide.
