3.7. On arrival at a transportation mishap, the first on-scene responders observe an ongoing fire and learn from the driver of an overturned cargo truck that the consignment is compressed liquefied butane. They also observe a ruptured discharge line from which releasing vapor has ignited.
a. What immediate action should the team take on arrival at this scene?
b. What is the approximate distance from this scene to which unauthorized personnel should be evacuated?
3.13. Petroleum naphtha is a mixture of several flammable liquids that boils in the range of 86-140°F (30-60°C) and has a flashpoint of -70°F (-57°C). A bulk quantity of petroleum naphtha is usually stored in a tank to which the following hazard diamond has been affixed:
When first-on-the-scene responders arrive at a fire scene and observe this diamond on the exterior surface of a 1000-gallon storage tank, what immediate actions should they take to safeguard public health, safety, and the environment?