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Root Cause Of BESS Failures Publicly accessible records of BESS thermal events categorized by root-cause failure mode(s) can be limited and/or incomplete. While specific enumeration of root-cause failure modes of BESS thermal events is limited and can be highly nuanced, they can be broadly grouped in the following categories:
ROOT CAUSE CATEGORIES
THERMAL EVENT DATABASES:
UL- 171 thermal events
EPRI-26 with root-cause REASONS FOR LIMITED DATABASES WITH ROOT CAUSES: 1. Difficulty assessing damaged components 2. Significant cost and time needed to investigate, 3. hesitancy to provide root-case for specific event due to litigation concerns
Examples of root-cause risks by category
Note: Event root causes can expand across different categories and/or information to assess certain root-causes may not be available.
For most common BESS fire root-causes see BESS section
Extracted from the PDF; charts and images may read imperfectly.
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