4.1 General
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Resolutions - Maritime Safety Committee - Resolution MSC.285(86) – Interim Guidelines on Safety for Natural Gas-Fuelled Engine Installations in Ships – (Adopted on 1 June 2009) - Annex – Interim Guidelines on Safety for Natural Gas-fuelled Engine Installations in Ships - Chapter 4 – Electrical Systems - 4.1 General

4.1 General

  4.1.1 The provisions of this chapter should be applied in conjunction with applicable electrical requirements of part D of SOLAS chapter II-1.

  4.1.2 Hazardous areas on open deck and other spaces not defined in this chapter should be decided based on a recognized standardfootnote. The electrical equipment fitted within hazardous areas should be according to the same standard.

  4.1.3 Electrical equipment and wiring should in general not be installed in hazardous areas unless essential for operational purposes based on a recognized standardfootnote.

  4.1.4 Electrical equipment fitted in an ESD-protected machinery space should fulfil the following:

  • .1 In addition to fire and hydrocarbon detectors and fire and gas alarms, lighting and ventilation fans should be certified safe for hazardous area zone 1.

  • .2 All electrical equipment in a machinery space containing gas-fuelled engines, and not certified for zone 1 should be automatically disconnected, if gas concentrations above 20% LEL is detected on two detectors in the space containing gas-fuelled engines.

  4.1.5 There should be an equalization connection between the bunker supplier and the bunkering station on the ship when a flammable gas/liquid is transferred.

  4.1.6 Cable penetrations should satisfy the requirements regulating the dispersion of gas.

Parent topic: Chapter 4 – Electrical Systems
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