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 8 Submersible Systems Specific Requirements - Chapter 1 Overall Design Requirement for One-man Submersible
Atmospheric Diving Suit System (ADS systems) - Section 1 General
|
Section
1 General
1.1 Design basis
1.1.1 Requirements for one-man atmospheric diving suits and supporting equipment are to be
as listed below and in accordance with the remaining requirements of these Rules:
- one-man submersible atmospheric diving suits shall normally consist of a
pressure hull and an exostructure;
- the pressure hull and the exostructure shall be:
- so designed that all loads to be exerted on the structure are taken
into account. These shall include the most severe loads imposed in
normal conditions together with loads resulting from several
conditions occurring simultaneously. The planned maximum operating
depth and the collapse depth shall be specified;
- the pressure hull joints between moving pressure boundary components
of the limbs are to provide a pressure tight seal under all normal
operating conditions and have a fail-safe design that, in the event
of primary seal failure, will engage a secondary seal that will
maintain the integrity of the pressure boundary and will prevent
leakage;
- designed where practicable, so that all pipe systems penetrating the
pressure hull will be provided with two isolating valves, primary
and secondary readily accessible to the Operator, with the primary
valve to be immediately inboard of the penetration. Where this is
not practicable, all components of the system between the hull
penetration and the primary isolating valve shall be designed for an
internal pressure of not less than that equivalent to the collapse
depth;
- Oxygen cylinders located on board of the ADS are to be stored
outside the human occupancy pressure boundary of the ADS. There are
to be at least two banks with separate penetrations entering the
pressure boundary. These penetrations should be positioned so as to
minimise the possibility that a single incident would cause failure
of both penetrations. Oxygen pressure is to be externally regulated,
such that high pressure Oxygen does not enter the human occupancy
pressure boundary of the ADS. The human occupancy pressure boundary
of the ADS is to be provided with a pressure relieving device to
prevent the internal pressure from rising more than 100 mbar above 1
atm;
- fitted with a lifting point and external structural members capable
of withstanding the stresses that may be experienced in service
condition in accordance with the LR Code for Lifting Appliances in a Marine Environment, July 2022;
- equipped with at least one alternative lifting point to which
attachments may be secured to raise the ADS unit to the surface in
an emergency.
|
|
| Copyright 2022 Clasifications Register Group Limited, International Maritime Organization, International Labour Organization or Maritime
and Coastguard Agency. All rights reserved. Clasifications Register Group Limited, its affiliates and subsidiaries and their respective
officers, employees or agents are, individually and collectively, referred to in this clause as 'Clasifications Register'. Clasifications
Register assumes no responsibility and shall not be liable to any person for any loss, damage or expense caused by reliance
on the information or advice in this document or howsoever provided, unless that person has signed a contract with the relevant
Clasifications Register entity for the provision of this information or advice and in that case any responsibility or liability is
exclusively on the terms and conditions set out in that contract.
|
 |
|