1 Purpose
The purpose of this annex is to provide performance standard and functional as well as
system requirements applicable to smoke management systems if installed on new passenger
ships.
2 Definition
For the purposes of this performance standard, the following definitions apply:
2.1 Smoke management system is an engineered system including all methods that can
be used singly or in combination to handle smoke movement ensuring a safe evacuation of
persons in case of fire by preventing the contamination of smoke into escape routes. The
life-safety performance criteria for safe evacuation should be acceptable to the
Administration.
2.2 Smoke extraction system, which may form part of a smoke management system, is
intended to extract smoke from escape routes by means such as exhaust fans.
3 Functional requirements
3.1 The systems should be designed as to maintain sufficiently smoke free escape routes
in case of fire.
3.2 The systems may be either independent systems or part of or combined with the general
air conditioning and ventilation systems.
3.3 The systems should be provided with an alternative source of power in order to remain
operational when the initial source of power is lost.
3.4 After fire or smoke has been detected, activation of the systems should be in a
controlled manner, either automatic or manual from the continuously manned central
control station and/or the safety centre.
3.5 The system should remain operational or available for the duration required.
4 Principal system requirements
4.1 The system should be arranged for manual operation. Automatic operation with manual
override may be accepted by the Administration.
4.2 The system should be arranged in sections such that the smoke will be retained in the
space of origin by using smoke barriers made of non-combustible material and/or pressure
differentials, whereby any section should not serve more than one main vertical zone.
4.3 The system covering large volume spaces like atrium or other multi-deck spaces should
be designed based on respective fire scenarios.
4.4 The system should be capable to maintain the stairway enclosure with a positive
pressure compared to the adjacent areas in order to prevent the ingress of smoke. This
may be achieved by supplying more air then extracting from the stairway or respective
active pressurization system.
4.5 The minimum pressure differential for each section should prevent smoke spread across
the smoke control boundary, as applicable, considering the most demanding ventilation
arrangement. The pressure difference should not cause any constraint of opening doors in
escape routes.
4.6 The system should be designed to be fully operational within 2 minutes after
activation, regardless of manual or automatic.
4.7 The system should be provided with at least two independent power sources.
4.8 All ducts used for smoke extraction should be made of steel or equivalent and
insulated depending on the type of spaces passing through.
4.9 System components of smoke management systems in contact with smoke should be made of
materials able to withstand temperatures expected during operation.
4.10 The system should be so arranged that extracted smoke will not affect external means
of escape and the embarkation deck.
4.11 Consideration should be given to the requirement for the automatic fire dampers in
SOLAS regulation II-2/9.7. Measures should be implemented to ensure
that fire integrity of the ventilation duct is not impaired.
5 Commissioning and operation
5.1 The system should be tested during commissioning using theatrical hot smoke, or other
means, that are sufficient to overcome any stratification effects, if applicable, as
acceptable to the Administration.
5.2 A design, installation, operation and maintenance manual should be provided on board.
5.3 The smoke management system should be included in the ship's maintenance plan as
required by SOLAS regulation II-2/14.2.2.
5.4 An operational strategy as when and how to use a smoke management system should be
prepared and included in crew's training plan as well as the regular fire drills.
6 Performance standard
The systems should be tested, approved and maintained, as acceptable to the
Administration.