What is the critical consideration when stowing bagged goods, considering the potential for spontaneous combustion?

The critical consideration when stowing bagged goods prone to spontaneous combustion is ensuring adequate ventilation to dissipate heat and moisture. Spontaneous combustion occurs when organic materials, such as certain agricultural products like grain, hay, or cotton, generate heat through biological processes like respiration or microbial activity. This heat, if trapped within the bagged goods, can rise to a point where it initiates a fire without an external ignition source. Proper ventilation prevents heat buildup by allowing air to circulate through the stow, carrying away the internally generated heat. Simultaneously, ventilation removes moisture, which accelerates microbial activity and heat generation. The type and amount of ventilation required depend on the specific cargo, its moisture content, and the ambient temperature. Insufficient ventilation allows the temperature to rise uncontrollably, while excessive ventilation can dry out the cargo excessively, potentially creating other problems depending on the goods. Therefore, the primary goal is to maintain a moderate temperature and moisture level through appropriate ventilation strategies, preventing the conditions that lead to spontaneous combustion. The stowage plan should account for potential hotspots by utilizing ventilation ducts and ensuring sufficient spacing between bagged goods to promote airflow.