Question: ML's business is now operational and one of their road tankers has taken an unauthorized travel route due to a communication failure with the control officers. The tanker gets jammed under a narrow bridge and a spillage of the hazardous chemical occurs. There are concerns that this might cause an explosion causing untold harm to life and property if correct measures are not taken promptly. Advice the emergency services who attend to the scene on what safety measures to take based on each of the following emergency action codes.