This section is available on request - MAN Diesel & Turbo
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This section is available on request - MAN Diesel & Turbo
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<strong>MAN</strong> B&W 18.04<br />
Alarm – Slow Down and Shut Down System<br />
The shut down system must be electrically separated<br />
from other systems by using independent<br />
sensors, or sensors comm<strong>on</strong> for the alarm system<br />
but with galvanically separated electrical circuits,<br />
i.e. <strong>on</strong>e sensor with two sets of electrically independent<br />
terminals. The l<str<strong>on</strong>g>is</str<strong>on</strong>g>t of sensors are shown<br />
in Table 8.04.04.<br />
Basic safety system design and supply<br />
The basic safety sensors for a <strong>MAN</strong> <strong>Diesel</strong> engine<br />
are designed for Unattended Machinery Space<br />
(UMS) and compr<str<strong>on</strong>g>is</str<strong>on</strong>g>es:<br />
• the temperature sensors and pressure sensors<br />
that are specified in the ‘<strong>MAN</strong> <strong>Diesel</strong>’ column<br />
for shut down in Table 8.04.04.<br />
These sensors are included in the basic Extent of<br />
Delivery, EOD: 4 75 24.<br />
Alarm and slow down system design and supply<br />
The basic alarm and slow down sensors for a<br />
<strong>MAN</strong> <strong>Diesel</strong> engine are designed for Unattended<br />
Machinery Space (UMS) and compr<str<strong>on</strong>g>is</str<strong>on</strong>g>es:<br />
• the sensors for alarm and slow down, opti<strong>on</strong>: 4<br />
75 27.<br />
The shut down and slow down panels can be ordered<br />
as opti<strong>on</strong>s: 4 75 6 0, 4 75 6 4 or 4 75 6 5<br />
whereas the alarm panel <str<strong>on</strong>g>is</str<strong>on</strong>g> yard’s supply, as it<br />
normally includes several other alarms than those<br />
for the main engine.<br />
For practical reas<strong>on</strong>s, the sensors for the engine<br />
itself are normally delivered from the engine supplier,<br />
so they can be wired to terminal boxes <strong>on</strong><br />
the engine.<br />
The number and positi<strong>on</strong> of the terminal boxes<br />
depends <strong>on</strong> the degree of d<str<strong>on</strong>g>is</str<strong>on</strong>g>mantling specified in<br />
the D<str<strong>on</strong>g>is</str<strong>on</strong>g>patch Pattern for the transportati<strong>on</strong> of the<br />
engine based <strong>on</strong> the lifting capacities <str<strong>on</strong>g>available</str<strong>on</strong>g> at<br />
the engine maker and at the yard.<br />
Page of 7<br />
Alarm, slow down and remote indicati<strong>on</strong> sensors<br />
The Internati<strong>on</strong>al Associati<strong>on</strong> of Classificati<strong>on</strong> Societies<br />
(IACS) indicates that a comm<strong>on</strong> sensor can<br />
be used for alarm, slow down and remote indicati<strong>on</strong>.<br />
A general view of the alarm, slow down and shut<br />
down systems <str<strong>on</strong>g>is</str<strong>on</strong>g> shown in Fig. 8.04.0 .<br />
Tables 8.04.02 and 8.04.03 show the requirements<br />
by <strong>MAN</strong> <strong>Diesel</strong> for alarm and slow down<br />
and for UMS by the classificati<strong>on</strong> societies (Class),<br />
as well as IACS’ recommendati<strong>on</strong>s.<br />
The number of sensors to be applied to a specific<br />
plant for UMS <str<strong>on</strong>g>is</str<strong>on</strong>g> the sum of requirements of the<br />
classificati<strong>on</strong> society, the Buyer and <strong>MAN</strong> <strong>Diesel</strong>.<br />
If further analogue sensors are required, they can<br />
be ordered as opti<strong>on</strong>: 4 75 28.<br />
Slow down functi<strong>on</strong>s<br />
The slow down functi<strong>on</strong>s are designed to safeguard<br />
the engine comp<strong>on</strong>ents against overloading<br />
during normal service c<strong>on</strong>diti<strong>on</strong>s and to keep the<br />
ship manoeuvrable if fault c<strong>on</strong>diti<strong>on</strong>s occur.<br />
The slow down sequence must be adapted to the<br />
actual plant parameters, such as for FPP or CPP,<br />
engine with or without shaft generator, and to the<br />
required operating mode.<br />
<strong>MAN</strong> B&W MC/MC-C, ME/ME�C/ME�GI/ME-B engines 198 70 40�3.0<br />
<strong>MAN</strong> <strong>Diesel</strong>