Nippon Carbon Co.,Ltd. [5302.T]
TOKYO, Mar 31 (Pulse News Wire) – Nippon Carbon CO.,LTD. (5302.T) reported on March 31 that a fire at its Toyama plant had been fully investigated and contained.
The incident occurred on August 29, 2025, around 7:16 am, when coke particles heated to approximately 3,000°C exploded from a blackening furnace used in the production process of artificial graphite electrodes, causing extensive damage. The fire was extinguished by firefighters on August 31, 2025, at 4 pm. Fortunately, there were no human casualties among employees or nearby residents, and no neighboring properties suffered damage. The affected building's floor area was 10907.45 square meters, with 4,440.32 square meters damaged.
Investigation revealed that volatile components released during the heating process accumulated inside the furnace, leading to a sudden pressure increase and initial small-scale explosions. To prevent future incidents, the company plans to implement several measures, including altering furnace loading methods, installing spray prevention covers, and modifying water pipe specifications and positions. In the fiscal year ending December 2025, the company recorded a special loss of ¥800 million due to the fire and recovery costs. The impact on the supply chain for artificial graphite electrodes remains limited thanks to alternative production facilities.
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