noun
safety stock; buffer stock
Business and supply-chain term for extra inventory held to prevent stockouts caused by demand fluctuations or supply delays.
需要の変動に備えて安全在庫を確保する。
We secure safety stock in preparation for demand fluctuations.
安全在庫の水準を定期的に見直している。
We regularly review the level of safety stock.
在庫 is general 'inventory' or 'stock on hand'; 安全在庫 specifically refers to the buffer portion held to absorb uncertainty.
Compound of 安全 (safety) and 在庫 (inventory), likely a calque from English 'safety stock'.