This Chapter details the requirements for installations
                           and equipment selection to minimise the risk of ignition of explosive
                           gas or dust atmospheres.
                        
                        
                        
                      
                     
                     
                     
                        
                        
                        Application of this Chapter will facilitate the verification of the
                           performance requirements of ANEP-77 NATO Naval Ship Code, Chapter IV, Regulation
                           21 (in conjunction with Vol  2, Pt  9, Ch  11 Gas detection.