CEA 4001 - Page 35

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- HHP2, High Hazard Process Group 2;
- HHP3, High Hazard Process Group 3;
- HHP4, High Hazard Process Group 4.
5.2.4 High Hazard, Storage - HHS
Covers the storage of goods where the height of storage exceeds the limits given in 5.2.2.
High
Hazard, Storage - HHS, is sub-divided into 4 categories:
- HHS1, High Hazard Storage Category I;
- HHS2, High Hazard Storage Category II;
- HHS3, High Hazard Storage Category III;
- HHS4, High Hazard Storage Category IV.
5.3 Storage
5.3.1 General
The overall fire hazard of stored goods is a function of the combustibility of the materials being stored,
including
their packaging, and of the storage configuration.
To determine the required design criteria for stored goods the procedure shown in Figure 2 shall be followed.
NOTE 1: where large scale fire test data is available, it may be appropriate to use such data to establish
design
criteria.
NOTE 2: the method described in annex M is one of the methods which may be used to determine the risk
of product in storage conditions in the following conditions:
- for new material;
- for new packaging;
- for new storage configuration;
- for new product configuration;
- to redefine the classification of one product in the case of bad experience.
NOTE 3: if, for technical reasons, intermediate sprinklers cannot be used, EFSR sprinklers can be use in
accordance
with annex L. In this case, the storage configuration shall be approved by the
authorities”.
Figure 2- Flow chart for determining the class required for storage