Section
1 General requirements
1.1 General
1.1.1 This Chapter
applies to all ships and is in addition to other relevant Sections
of the Rules.
1.1.2 Attention
should also be given to any relevant requirements of National, International
or Local Authorities which would apply to the ships in service.
1.1.3 This Chapter
states requirements for systems of automatic or remote control which
may be used for controlling the machinery contained in Pt 6, Ch 1, 1.2 Plans 1.2.2. The design and installation
of other control equipment is to be such that there is no risk of
danger due to failure.
1.1.4 The details
of control systems will vary with the type of machinery being controlled
and special consideration will be given to each case.
1.2 Plans
1.2.1 Where control
systems are applied to essential machinery or equipment as listed
in Pt 6, Ch 1, 1.2 Plans 1.2.2, plans are to be submitted
in triplicate. They are to include or to be accompanied by:
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Details of operating medium, i.e.
pneumatic, hydraulic or electric, including standby sources of
power.
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Description and/or block diagram
showing method of operation.
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Line diagrams of control
circuits.
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Lists of points monitored.
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List of alarm points.
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List of control points.
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Test facilities provided.
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Test schedules.
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Location drawings of fire
detectors.
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List of safety functions and details
off any overrides, including consequences of use, see
Pt 6, Ch 1, 2.4 Safety systems – General requirements 2.4.9.
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1.2.2 Control,
alarm and safety systems. Plans are required for the following:
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Ballast systems.
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Bilge systems.
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Cargo pumping systems for
tankers.
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Controllable pitch propellers.
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Electrical generating plant.
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Fire detection systems.
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Main propelling machinery including
essential auxiliaries.
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Steam raising plant.
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Transverse thrust units.
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Steering gear plant.
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Inert gas generators.
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Thermal fluid heaters.
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1.2.3
Alarm
systems. Details of the overall alarm system linking engine
room, wheelhouse and, where applicable, accommodation spaces are to
be submitted.
1.2.4
Programmable
electronic systems. In addition to the documentation required
by Pt 6, Ch 1, 1.2 Plans 1.2.2, the following is to
be submitted:
1.2.5
Control
station. Location and details of control stations are to be
submitted, e.g. control panels.
1.2.6
Standard
system. Where it is intended to employ a system which has been
previously approved, plans may not be required to be submitted. The
building port, where applicable, and date of the previous approval
is to be advised.
1.3 Alarm and control equipment
1.3.1 Major units
of equipment associated with control, alarm and safety systems as
defined in Pt 6, Ch 1, 1.2 Plans are to be surveyed
at the manufacturers' works and the inspection and testing is to be
to the Surveyor's satisfaction.
1.3.2 Equipment
used in control, alarm and safety systems should, whenever practicable,
be selected from the List of Type Approved Control and Electrical
Equipment published by LR. A copy of LR’s Test
Requirements for the Type Approval of Control and Electrical Equipment will
be furnished on application.
1.3.3 Assessment
of performance parameters, such as accuracy, repeatability, etc. are
to be in accordance with an acceptable National or International Standard.
1.4 Alterations and additions
1.4.1 When an
alteration or addition to the approved system(s) is proposed, plans
are to be submitted for approval. The alterations or additions are
to be carried out under survey, and the inspection, testing and installation
are to be to the Surveyor’s satisfaction.
1.4.2 Details
of proposed software modifications are to be submitted for consideration.
Where the modification may affect compliance with these Rules, proposals
for verification and validation are also to be submitted.
1.4.3 Software
versions are to be uniquely identified by number, date or other appropriate
means. Modifications are not to be made without also changing the
version identifier. A record of changes to the system since the original
issue (and their identification) is to be maintained and made available
to the LR Surveyor on request.
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