The requirements of this Chapter are applicable to the design and construction
                        philosophy for the Gas Detection systems.
                     
                     
                     
                     
                     This Chapter details the requirements for gas detection systems to detect flammable,
                        poisonous, toxic/corrosive, asphyxiant or irritant gases and alert personnel to enable
                        the hazard to be managed.
                     
                     
                     
                     
                     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  5 Hazardous Areas)