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Section 2 Design Principles
201. Internal fittings and equipment of the pressure hull
1. For equipment, fittings, insulation, paintwork and preservative coatings inside pressure hulls, use may only be made of those materials and media which do not release any toxic or severe irritant
gases under the atmospheric conditions mentioned in Ch 4,
plies to the effects of heat.
Sec 2. Wherever possible, this also ap-
2. Wherever possible, only non-combustible or at least flame retardant materials and media used inside the pressure hull.
3. Battery spaces are to be so designed that they can accommodate the equipment needed tilation, air circulation, acid measurement and cooling.
4. Tanks and bunkers located within the pressure hull are to be functionally designed and
shall be for ven-
provided
with sufficient ventilation and drainage facilities in each case. All tanks and bunkers are to be pro- vided with manholes.
202. Allocation of space
As far as possible, the space occupied by the crew is to be separated from that in which machi- nery and equipment is installed and is to be acoustically and thermically insulated. However, it may not be applied when considered appropriately by the Society as provided separately.
203. Equipment
1. At least one seating facility is to be provided for each crew member.
2. In autonomous submersibles and those designed for periods of service exceeding 12 hours, the pres- sure hull is to be provided with a suitable accommodation area with sleeping facilities and separate sanitary arrangements.
204. Lighting
Each pressure hull compartment is to be adequately lighted. When the one circuit of lighting is un- available, the pressure hull compartment is to be adequately lighted by the other circuit of lighting.
205. Miscellaneous
1. Wherever necessary, viewports are to be internally and externally protected against mechanical damage.
2. Pressure hulls are to be adequately provided with eye plates, welding lugs etc. for the attachment of supports.