- Cargo spaces: Quantity of CO2 available be sufficient to give a minimum volume of gas equal to 30 % of the gross volume of largest cargo space so protected by the ship.
- Machinery spaces: Quantity of CO2 available be sufficient to give a minimum volume of gas equal to 40 % of the gross volume of space (excluding casing) or 35 % of the gross volume of space (including casing). For machinery spaces, the fixed piping system shall be such that 85 % of the gas can be discharged into the space within 2 minutes.
- For the purpose of the above volume of free CO2 shall be calculated at 0.56 m3 / kg.
- Two separate controls shall be provided for releasing.
- One control shall be used to discharge the gas from its storage container.
- The other to open the valve of the piping which conveys the gas to the protected space.
