154.540—Quick-closing shut-off valves: Emergency shut-down system.
               		
               	 	
               	 	
               	 	               	 	               	 	               	 	               	 	
               	 	
    
         The quick-closing shut-off valves under  §§ 154.530, 154.532, and 154.538 must have an emergency shut-down system that:
     
    
        
        (a) 
         Closes all the valves;
     
    
        
        (b) 
         Is actuated by a single control in at least two locations remote from the quick-closing valves;
     
    
        
        (c) 
         Is actuated by a single control in each cargo control station under  § 154.320; and
     
    
        
        (d) 
         Has fusible elements at each tank dome and cargo loading and discharge manifold that melt between 98 °C (208 °F) and 104 °C (220 °F) and actuate the emergency shut-down system.