7.2.1 A Chemical, Biological, Radiological, and Nuclear protection operating concept shall
be developed to define the magnitude and nature of the threats and submarine
operating conditions. It shall identify the compartments which are exposed and
protected.
7.2.2 A monitoring and detection system is to be provided to detect the presence of a
threat and to identify the contaminants. Detection is to be provided for the
external atmosphere and the internal spaces which may become contaminated in
particular operating conditions.
7.2.3 Where required, protection of the internal atmosphere is to be provided by air
filtration systems in normal and abnormal operating conditions.
7.2.4 Arrangements are to be provided for personnel to enter and exit the submarine in
protective clothing. Suitable cleaning and decontamination facilities are to be
provided to prevent contamination of the internal atmosphere.
7.2.5 Where internal spaces are intended to be contaminated, suitable access arrangements
and gas tight boundaries are to be provided. Arrangements are to be provided for
personnel to enter and exit the space in protective clothing. Suitable cleaning and
decontamination facilities are to be provided to prevent contamination of the
internal atmosphere.