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Malfunction of Remote Control System For Main Engine: Return

The remote control system for the main engine on a cargo ship malfunctioned, causing the engine to not respond properly to commands from the bridge. An inspection found that the Remote/Local changeover lever had shifted from the "Remote control" position, interrupting remote control signals. It is believed this occurred because the fixing bolt for the blocking lever on the changeover lever shaft had become loose, allowing the lever to shift. The shipping company instructed crews to tightly secure the blocking lever bolt and implement periodic inspections of the remote control system to prevent future issues.

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Kupujem HN
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344 views2 pages

Malfunction of Remote Control System For Main Engine: Return

The remote control system for the main engine on a cargo ship malfunctioned, causing the engine to not respond properly to commands from the bridge. An inspection found that the Remote/Local changeover lever had shifted from the "Remote control" position, interrupting remote control signals. It is believed this occurred because the fixing bolt for the blocking lever on the changeover lever shaft had become loose, allowing the lever to shift. The shipping company instructed crews to tightly secure the blocking lever bolt and implement periodic inspections of the remote control system to prevent future issues.

Uploaded by

Kupujem HN
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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RETURN

ME661
Malfunction of Remote Control System for Main Engine

Technical Committee
Type of ship PCC
Date of completion August 42006
Navigation route JapanEuropa
Damaged machinery
Category Main engine
Name Remote control system
Type MITSUI MAN B&W S60MC
Maker MES
Date of trouble July 282009

1. Outline of breakdown
While the main engine was being operated by remote control from the bridge after a pilot had gone on
boardthe remote control system for the main engine did not follow Dead slow ahead order and Slow
aheadorder which were given by the engine telegraphWhereas it was possible to control the main engine
remotely when Half ahead order and Stop engine order were given by the engine telegraph
The main engine was stopped and inspection of the remote control system was immediately carried out
The inspection revealed that the Remote/Local change-over lever at the main engine local maneuvering
stand sifted from Remote control position and remote control signals could not be properly transmitted
Although the Remote/Local change over lever was immediately restored to Remote control positionthe
ship was sill ordered to use an additional tugboat by the port authority after the restoration

2. Cause of trouble
It is presumed that the fixing bolt of the blocking lever which is fitted to the shaft of the Remote/Local
change over lever became loose due to vibration of the main engine local maneuvering stand or improper
tightening of the fixing bolt and then the blocking lever came offConsequentlythe Remote/Local change
over lever shifted from Remote control positionSee Figs1 and 2 in Appendix

3. RepairCountermeasure
The shipping company instructed the ships crew members certainly tighten the bolt which secures the
blocking lever and ordered that they should implement periodic inspection of the remote control system
Moreoverthe shipping company introduced this case to all ships which are being operated by the company
and ordered their crew members to carry out the following
(1) They should confirm that the Remote/Local change over lever is certainly locked to prevent it from
shifting due to vibration and so on
(2) They should implement periodic inspection of the remote control system thoroughly

-1-
The Marine Engineer. November, 2009
RETURN

Appendix

Fig.1: Outline of local maneuvering stand

Fig.2: Details of Remote/Local changeover lever

-2-
The Marine Engineer. November, 2009

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