ISO 23269-3:2011提供了国际海事组织制定的IMO IBC规范（散装化学品）和IMO IGC规范（气体运输船）要求的自给式空气呼吸器（SCBA）（不使用储存氧气）的性能规范。 根据ISO 23269-3:2011制造的呼吸器构成了一套安全设备的一部分，该设备允许人员进入充气隔间并在那里进行工作。呼吸器不适用于灭火或进入火焰。

ISO 23269-3:2011 provides performance specifications of the self-contained air-breathing apparatus (SCBA) (not using stored oxygen) required by the IMO IBC Code (for bulk chemicals) and the IMO IGC Code (for gas carriers) developed by the International Maritime Organization. The breathing apparatus manufactured in accordance with ISO 23269-3:2011 constitutes an element of the set of safety equipment which permits personnel to enter a gas-filled compartment and perform work there. The breathing apparatus is not intended for use in fighting fires or suitable for entry into flames.