If flame is threatening a tanker car, where should the water stream be directed?

Directing the water stream at the upper portions of the tank is the most effective strategy when flame is threatening a tanker car. This approach aims to cool the tank and prevent the heat from reaching the more vulnerable lower portions, where potential leaks or structural weaknesses may be located. By targeting the upper area, firefighters can help lower the temperature of the tank and the surrounding air, thereby reducing the likelihood of a catastrophic failure due to excessive heat.

Cooling the upper sections also creates a protective barrier of steam, which can help mitigate radiant heat exposure and assist in managing flames that may threaten the integrity of the tank. It is essential to avoid directly attacking the flames at the base or shooting water into the tank, as this can cause steam explosions or exacerbate the situation inside the tank. Ensuring that the water stream targets the upper parts effectively emphasizes cooling and preservation of the tank’s structural integrity during a critical and potentially dangerous situation.