4.6.3 Emergency plan

A fire protection and emergency plan should be provided as required by and in accordance with national legislation.  In the absence of national standards, guidelines of what should be covered in an emergency plan can be found in NFPA 853 [51]. Personnel should receive specific training in dealing with emergencies involving hydrogen.  In particular they should know how hydrogen explosions and fires differ from those involving the more conventional gaseous fuels such as natural gas and LPG.  One example of a difference, which is of particular relevance to hydrogen fires, is that hydrogen flames are often invisible, especially in bright sunlight, increasing the likelihood of people fleeing an incident or emergency workers inadvertently straying into a flame.