(a) Each refrigerated tank must have:
- (1) An alarm that operates when the cargo's pressure exceeds the vapor pressure described in § 153.371(b); or
- (2) An alarm that operates when the cargo's temperature exceeds the steady state temperature described in § 153.371(b).
- (b) The alarm must give an audible and visual signal on the bridge and at the cargo control station.
- (c) The cargo pressure or temperature alarm must be independent of other cargo pressure or temperature sensing arrangements.