F.3 Cargo holds

F.3 Cargo holds
F.3.1 General
F.3.1.1 Cargo hold ventilating systems are to be separated from the ventilation systems serving other
spaces.
F.3.1.2 If cargo holds are subdivided for reasons of stability, freeboard or fire protection (e.g. separate
flooding with CO2) this has to be taken into account for the design of the ventilation systems.
F.3.1.3 Air ducts and components of ventilation systems are to be so installed that they are protected
from damage.
F.3.1.4 For the types of protection generally to be applied for ventilating systems and the associated
electrical equipment, see the GL Rules for Electrical Installations (I-1-3), Section 1, Table 1.10.
F.4 Dangerous goods in packaged form
F.4.1 The requirements on the capacity of the ventilation system, the certified safe type of electrical
explosion protection, the electrical protection and mechanical design are summarised in the GL Rules for
Machinery Installations (I-1-2), Section 12 P, Table 12.10a to 12.10e and are related to the requirements
indicated in SOLAS, Chapter II-2, Regulation 19.
F.4.2 If mechanical ventilation is required, independent exhaust ventilation is to be provided for the
removal of gases and vapours from the upper and lower part of the cargo space. This requirement is considered
to be met if the ducting is arranged such that approximately 1/3 of the air volume is removed from
the upper part and 2/3 from the lower part. The position of air inlets and air outlets shall be such as to
prevent short circuiting of the air. Interconnection of the hold atmosphere with other spaces is not permitted.