Chemical manufacturing process designers and operators should consider Inherent Safety Design (ISD) options throughout the process life cycle, from initial conception through research and development, plant design, construction, operation, modification and eventual shutdown. Usually, the best opportunity to implement ISD occurs early in research and development before significant resources have been expended in process or product development, and before a plant has been built. The flammability properties are very important to design a device to protect the vessel in the event of fire exposure. Discuss relationship between various flammability properties and explain your answer with the help of flammability diagram. [30 marks]