This potentially includes a range of large offshore vessels (pipe layers, construction vessels, etc.) in accordance with the Special Purpose Ship (SPS) Code (2. The provisions require that a number of essential ship systems remain operational after a fire or flooding casualty not exceeding a specified fire casualty threshold and a single watertight room, respectively.
The essential ship systems include propulsion, steering and steering- control, navigation, internal/external communication, fire main, bilge and ballast systems, power- operated watertight doors and flooding detection systems. Additional systems to support “safe areas” on- board are also required to be operable to a minimum level of habitability (provision of food, fresh water, and basic sanitary services among others).
The new provisions also provide design criteria for systems required to remain operational for supporting the orderly abandonment of a ship. These include fire main, internal/external communications, bilge, lighting and guidance systems for evacuation. The topological complexity of certain essential systems (e. The process is outlined in MSC Circ. The outcome of the verification typically consists of a series of extensive reports of FMEA studies for each essential system. BB Systems FMEA - basic design verification system.
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In anticipation of the adoption of the SRt. P regulations, in 2. Brookes Bell Safety at Sea Ltd started the development of a software tool to carry out analysis of residual systems availability after flooding or fire damage. The software has been developed in- house and in collaboration with major ship yards and design offices. The software can be used during the basic design stages, when the systems concepts and principles have been defined. Key features. Interactive GUI: Working environment integrates (1) watertight subdivision, (2) arrangement of fire compartmentation and (3) systems topological diagrams.
Efficient data management: The program incorporates the use of a SQL database which allows for multiple users working on the same project and allows detailed tracking of changes and updates. Assessment of both physical damage and impact on system functionality / operability. Automatic report generation and documentation: customised for (i) design iterations, (ii) FMEA verification or (iii) statutory approval. Facility to import (and update) watertight subdivision and A- class boundaries from DXF drawings. Process. Import ship watertight subdivision and fire compartmentation.
Modelling of systems: dedicated interactive GUI used to create system model from systems’ concept drawings, single line diagrams or systems’ topological diagrams. Level of detail can be adjusted to stage of design. Cabling and piping can be imported from tabular data. Operability criteria are user- defined. Automatic definition of casualty scenarios (damages) with ability to modify manually and define custom damages. Use of Binary Decision Diagrams (BDD) to establish impact of casualty scenarios and damages on modelled systems components, sub- systems, systems and ultimately on defined operability criteria.
Operating System. Can Spark Plug Break Windows. Windows 7, 8 or 1. Processor. Dual core preferred, 6. RAM2. 0 GB available.
Disk Space. 30 MB for software plus space for project files, approx. GB for reasonable sized projects. Monitors. 20. It also provides options for recovering the systems, including manual actions by the crew. The system can greatly enhance the Failure Mode and Effect Analysis (FMEA) process.
Time efficiency: Operability of systems can be achieved by systems segregation, redundancy and/or active recovery of affected components and sub- systems. The SAM environment allows the designer to assess systems design alternatives in a time- efficient manner; facilitating the identification of optimal ship systems concepts and arrangements: i. The results can be presented and analysed (i) system by system, (ii) by location and (iii) by type of damage.
This can greatly assist in the development of crew operating manuals, emergency contingency planning and crew training. Further information: enquiries@safety- at- sea.