Standard for Safety for Test Method for Evaluating Thermal Runaway Fire Propagation in Battery Energy Storage Systems

Underwriters Laboratories Inc. (UL)
Standards Development Organisation:
Underwriters Laboratories Inc.
Working Program:
View the UL work program
Designation Number:
ANSI/CAN/UL 9540A
Standard Type:
National Standard of Canada - Domestic
Standard Sub-Type
Joint Canada-U.S. National Standard
Standard Development Activity:
Amendment Revision
ICS code(s):
13.220; 27.100; 29.220
Status:
Proceeding to development
SDO Comment Period Start Date:
SDO Comment Period End Date:
Posted On:

Scope:

1.1  The test methodology in this standard determines the capability of a battery technology to undergo thermal runaway and then evaluates the fire and explosion hazard characteristics of those battery energy storage systems that have demonstrated a capability to undergo thermal runaway.   1.2  The data generated will be used to determine the fire and explosion protection required for an installation of a battery energy storage system intended for installation, operation and maintenance in accordance with ICC IFC, NFPA 1, NFPA 70, IEEE C2, CAN/CSA C22.2 No. 0, and other codes affecting energy storage systems, and the manufacturer's installation instructions.   1.3  Fire protection requirements not related to battery energy storage system equipment are covered by appropriate installation codes.

1.4  See Figure 1.1 for a schematic of the test sequence in this standard. See Annex A which explains:

        a) The purpose of the tests included in this standard;         b) Explanation of individual tests; and         c) Interpretation and application of the results.

Project need:

Amendments are necessary to an existing Joint Canada-US standard including Making FTIR measurements optional and addition of hydrogen measurements at Unit Level Test; Clarification of sample rest times after conditioning and charging; Correction of incorrect standard reference in 9.1.8

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