Section 7 Electrical installation
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules for LNG Ships and Barges Equipped with Regasification Systems, July 2022 - Chapter 1 Rules for LNG Ships and Barges Equipped with Regasification Systems - Section 7 Electrical installation

Section 7 Electrical installation

Parent topic: Chapter 1 Rules for LNG Ships and Barges Equipped with Regasification Systems

7.1 Functional objectives

7.1.1 The electrical installation of a regasification system shall be designed, installed and maintained such that it does not represent an ignition hazard or introduce any foreseeable hazards into the normal operation of the ship.

7.2 Performance requirements

7.2.1 The installations shall meet with the requirements of Pt 6, Ch 2 Electrical Engineering of the Rules for Ships, or an alternative relevant National or International Standard acceptable to LR, as applicable.

7.2.2 All electrical equipment shall be suitably protected against damage to itself under fault conditions and to prevent injury to personnel.

7.3 System design, construction and installation

7.3.1 The electrical power for the regasification system shall be provided by an individual dedicated circuit from the main switchboard.

7.3.2 Where the Lloyd’s RGP+ Notation is assigned, the system shall be provided by two individual circuits separated in the main switchboard or section board and throughout its length and without the use of common feeders. Where a stand-by unit is provided, it shall be supplied from a separate section of the main switchboard to ensure a single point equipment failure does not render both systems inoperable.

7.3.3 Electrical equipment for the regasification system shall be suitable for use in the environmental conditions envisaged during regasification mode. It is also to be appropriately installed to prevent any adverse effects due to environmental conditions encountered when not in use, such as during navigation.

7.4 Hazardous zones and spaces

7.4.1 The classification of hazardous zones associated with the regasification plant shall be carried out in accordance with IEC 60079-10-1 or an alternative relevant National or International Standard acceptable to LR.

7.4.2 The hazardous zones plan shall identify areas where the release of flammable gases and vapours may be present due to the regasification system during normal working operation and reasonably foreseeable abnormal conditions, as identified during the Risk Assessments required by Ch 1, 3 Risk based analysis of these Rules.

7.5 Certified safe type equipment

7.5.1 Selection of electrical equipment within the hazardous zones shall be in accordance with Pt 6, Ch 2, 14 Electrical equipment for use in explosive gas atmospheres or in the presence of combustible dusts of the Rules for Ships.

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