8.4 Bridge control of propulsion machinery
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Statutory Documents - IMO Publications and Documents - International Codes - 1979 MODU Code – Code for the Construction and Equipment of Mobile Offshore Drilling Units – Resolution A.414(XI) - Chapter 8 – Periodically Unattended Machinery Spaces for all Types of Units(See also 4.1) - 8.4 Bridge control of propulsion machinery

8.4 Bridge control of propulsion machinery

  8.4.1 In the marine mode, including manoeuvring, the speed, direction of thrust and, if applicable, the pitch of the propeller should be fully controllable from the navigating bridge.

  8.4.2 The remote control mentioned in 8.4.1 should be performed by a single control device for each independent propeller, with automatic performance of all associated services, including where necessary, means of preventing overload of the propelling machinery. However, where more than one propeller is designed to operate simultaneously, these propellers may be controlled by a single control device.

  8.4.3 The main propulsion machinery should be provided with an emergency stopping device on the navigating bridge and independent from the bridge control system referred to in 8.4.2.

  8.4.4 Propulsion machinery orders from the navigating bridge should be indicated in the engine control room or at the manoeuvring platform as appropriate.

  8.4.5 Remote control of the propulsion machinery should be possible only from one station at a time; at one control station interconnected control units are permitted. There should be at each station an indicator showing which station is in control of the propulsion machinery. The transfer of control between navigating bridge and machinery spaces should be possible only in the machinery space or machinery control room.

  8.4.6 It should be possible to control essential machinery and the propelling machinery locally, even in the case of failure in any part of the automatic or remote control systems.

  8.4.7 The design of the remote automatic control system should be such that in case of its failure an alarm will be given and the speed and direction of thrust are maintained until local control is in operation, unless the Administration considers it impracticable.

  8.4.8 Indicators should be fitted on the navigating bridge for:

  • .1 Propeller speed and direction in case of fixed pitch propellers;

  • .2 Propeller speed and pitch position in case of controllable pitch propellers.

  8.4.9 The number of unsuccessful consecutive automatic attempts to produce a start should be limited in order to safeguard sufficient starting air pressure. An alarm should be provided to indicate low starting air pressure set at a level which still permits main engine starting operations.

Parent topic: Chapter 8 – Periodically Unattended Machinery Spaces for all Types of Units(See also 4.1 )
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