4.1.1 Pressure vessels associated with diving systems and submersibles are to
be designed generally in accordance with the appropriate pressure vessel standards,
National Regulations or International Standards, taking into consideration the
additional loads specified in these Rules and project specifications.
4.1.2 Scantlings are to be selected to take care of corrosion during service.
Adequate corrosion allowance should be considered
4.1.3 The design, construction and testing of manned pressure chambers is to be
to LR class 1 pressure vessel requirements or highest integrity class of the
applicable pressure vessel code requirements.