Abstract: In response to a fire accident in a company in Ningbo, the investigation team passed on-site inspections, investigations and evidence collection, and commissioned relevant agencies and experts to conduct analysis and research, and ascertained the incident's history, causes, etc., and proposed not to exclude specific conditions. The possibility of spontaneous combustion of the lower thermoplastic elastomer SBS1302 particles may cause a fire. At the same time, it identified the nature and responsibility of the accident, and proposed accident-related prevention and rectification measures for the cause of the accident and exposed regulatory issues. This typical fire provided ideas for handling fire accidents caused by SBS spontaneous combustion and provided preventive measures to prevent similar fire accidents.

Key words: SBS, spontaneous combustion, fire, corrective measures, precautionary measure