Section 2 Approval of Life Support Arrangements
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Construction & Classification of Submersibles & Diving Systems, July 2022 - Part 5 Main and Auxiliary Machinery, Systems and Equipment - Chapter 4 Life Support Systems - Section 2 Approval of Life Support Arrangements

Section 2 Approval of Life Support Arrangements

Parent topic: Chapter 4 Life Support Systems

2.1 General Requirements

2.1.1 For Class acceptance of the life support arrangements full details, and calculations where necessary, together with arrangement drawings of the proposed systems should be submitted for consideration. The details should include the following:

2.1.2 Gas Supplies - Gas cylinder specification materials used in construction, working and test pressure, number of cylinders and copies of cylinder test Certificates.

2.1.3 Gas distribution and supply systems piping materials and scantlings, pipe couplings, valves, pressure hull penetrators and other associated fittings. Where special materials are used in oxygen systems such as, valve seats, the ignition temperatures of the materials should be provided.

2.1.4 Systems for the removal of Carbon Dioxide, other gases and moisture including maximum concentrations of toxic or flammable gases anticipated in the compartments with maximum number of persons present under the normal operating conditions.

2.1.5 Details of system(s) proposed together with calculations where applicable, giving expected generation and removal rates of undesirable gases over the range of temperatures and humidity expected.

2.1.6 Method of Carbon Dioxide removal in event of main power failure.

2.2 Oxygen Systems Control

2.2.1 Means of maintaining and controlling the partial pressure of oxygen is to be provided.

2.3 Emergency Breathing Apparatus

2.3.1 Details and arrangements together with amount of gas available. Confirmation that equipment is suitable for all toxic gases that could accumulate in the manned compartments.

2.4 Emergency Power Supplies

2.4.1 Type and capacity of supply available, power demand requirements of the items of equipment capable of being supplied from the emergency power supply.

2.5 Instrumentation

2.5.1 Details and types of instrumentation proposed to control and monitor the atmosphere in the manned compartments.

2.6 Thermal Protection

2.6.1 Means of providing thermal protection for occupants of the unit.

2.7 Provisions

2.7.1 Amount of food and water to be carried.

2.8 Medical Lock (where applicable)

2.8.1 Details and dimensions of medical lock proposed.

2.9 Combustible materials

2.9.1 Details of any materials used in the construction, or the furnishing of the unit, that are combustible at normal oxygen levels.

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