Requirement For Watertight Integrity; Size And Access Requirements - Simrad ME70 Installation Manual

Simrad ME70 Installation Manual

Requirement for watertight integrity

The size, location and design of the sonar room must fulfil all the requirements to the
vessel's watertight integrity.
In the event of a major leak in the sonar room, it must be possible to close all watertight
hatches and/or doors to the sonar room to maintain the vessel stability and safety.
The physical size of the sonar room must be limited, so that in the event of a major leak, the
flooding of the sonar room will not induce instability, or cause the vessel to capsize or sink.
Ensure that all watertight decks and bulkheads are inspected periodically to verify that
there are no unprotected openings or improper penetrations that will allow progressive
flooding from the sonar room, and that the watertight doors and hatches are in place and in
working order.
Ensure bilge high level alarms are arranged to provide the earliest warnings of abnormal
accumulation. The high level bilge alarms must be set as low as possible to the deck or bilge
well and positioned along the centre area of the compartment or in a location at which the
fluids will gravitate to first.
All cables leading in and out of the sonar room must be run in steel conduits. These steel
conduits must reach up and above the freeboard deck.
Related topics
Installation summary, page 46
Installation principles, page 50
Sonar room requirements, page 54

Size and access requirements

A well designed sonar room with a well fitted size and easy access reduces the risk of
corrosion, and simplifies maintenance. This increases system reliability.
Note
The physical size of the sonar room must be limited, so that in the event of a major leak, the
flooding of the room will not induce instability, or cause the vessel to capsize or sink.
The sonar room must be large enough to house all the system units. The room must provide
enough space to allow efficient maintenance. You must be able to keep all the cabinet doors
fully open without undue restriction to your movements.
1 The room must not be used for any other heavy machinery.
2 The room must not be unnecessarily obstructed by girders, pipes etc, which may cause
installation problems or impede maintenance.
56
345737/C