CEA 4001 - Effect of Stored Materials Configuration

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Table 33: Categories as a function of stored materials configuration (B1)
Storage configuration
Material Factor
1
2
3
4
Exposed plastic container with non-
combustible content
Cat. I,II,III
Cat. I,II,III
Cat. I,II,III
Cat. IV
Exposed plastic surface - unexpanded
Cat. III
Cat. III
Cat. III
Cat. IV
Exposed plastic surface - expanded
Cat. IV
Cat. IV
Cat. IV
Cat. IV
Open structure
Cat. II
Cat. II
Cat. II
Cat. IV
Solid block materials
Cat. I
Cat. I
Cat. II
Cat. IV
Granular or powdered material
Cat. I
Cat. II
Cat. II
Cat. IV
No special configuration
Cat. I
Cat. II
Cat. III
Cat. IV
NOTE : See B.3.1 to B.3.7 for explanations of the storage configurations.
Examples:
- foam mattresses;
- expanded polystyrene packaging;
- foam upholstery;
B.3 Effect of stored materials configuration
After determining the material factor, the stored materials configuration shall be consulted in Table B1
to determine the most appropriate Categorisation. If an appropriate category is given in Table C1 the
higher
of the two values shall be used.
This stored materials configurations in the table are as follows:
B.3.1 Exposed plastic container with non combustible content
This applies only to plastic containers containing non-combustible liquids or solids in direct contact
with the container.
NOTE : this configuration does Not apply to metal parts in plastic storage boxes.
- Category I: containers with non-combustible liquids;
- category II: small (<501) containers with non-combustible solids;
- category III: large (> 501) containers with non-combustible
solids; Examples:
- plastic bottles of soft drinks or liquids with less than 20% alcohol;
- plastic tubs or drums of inert powder such as talcum.
NOTE : the non-combustible contents act as a heat sink and reduce the rate of burning of the
containers. Liquids are more effective than solids since they conduct heat more efficiently.