(IV-7-3) General Safety

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Rules IV Industrial Services Part 7 Offshore Substations Chapter 3 General Safety Section 3 Means of Escape and Evacuation A.4 Abbreviations IMO International Maritime Organization PA Public address system SOLAS Safety of Life at Sea (IMO) UPS Uninterruptible power supply B Design Principles B.1 Escape Routing B.1.1 General B.1.1.1 In every area which is likely to be regularly or temporarily manned or in which personnel are accommodated at least two separate escape routes shall be provided, situated as far apart as practicable, to allow ready means of escape to the open decks and embarkation stations. Primary and secondary escape routes shall be foreseen. Exceptionally, GL may permit only one route of escape, due regard paid to the nature and location of spaces and to the number of persons who might normally be accommodated or employed there. B.1.1.2 Two routes of escape shall be provided from every machinery space such as those containing major electrical equipment. B.1.1.3 Every escape route shall be readily accessible and unobstructed and all exit doors along the route shall be readily operable. Dead-end corridors exceeding 7 m in length are not permitted. Switchboards more than 7 m long shall not form dead end corridors. B.1.1.4 Primary escape routes and stairways shall not be less than 1000 mm in clear width and 2.1 m in height (2050 mm for doors). It has to be ensured that access ways are sufficiently sized to allow for stretcher operation from all accessible parts of the platform. B.1.1.5 Escape routes shall be well marked, including signs. Marking shall show the preferred direction of escape. B.1.1.6 Personnel shall be able to use the escape routes without being exposed to excessive toxic fumes, smoke or unacceptable heat loads, hot liquids or falling objects. Special consideration is to be given to routing of medium and high voltage cables in escape routes. B.1.1.7 B.1.1.8 Escape routes should not be routed over hatches or lay-down areas. Escape routes on deck shall be provided with non-skid coating or equivalent means. B.1.1.9 In addition to these requirements of this chapter, national requirements, if applicable, for emergency escape and arrangement of stairs and ladders are to be observed. B.1.2 Door arrangement B.1.2.1 Doors in escape routes shall, in general, open in-way of the direction of escape, except that individual cabin doors may open into the cabins in order to avoid injury to persons in the corridor when the door is opened. B.1.2.2 All doors shall be constructed so that one person can easily open them from either side. They shall open in the direction of escape, without blocking the outside escape route. B.1.3 Stairs, ladders B.1.3.1 Stairways shall normally be used for means of vertical escape, however, a vertical ladder may be used for secondary means of escape when the installation of a stairway is shown to be impracticable. Edition 2013 Germanischer Lloyd Page 3–2
Rules IV Industrial Services Part 7 Offshore Substations Chapter 3 General Safety Section 3 Means of Escape and Evacuation B.1.3.2 Stairs and ladders are to be designed according to ISO 14122. Landings shall have the same size as the stairways. B.1.3.3 B.1.4 Ladders, stairs and walkways shall be of steel or other equivalent material. Lifts B.1.4.1 Lifts shall not be considered as forming one of the required means of escape. However, it shall be possible to escape from the lift and the hoist way with the lift at any elevation. Upon loss of main power supply, lifts shall automatically go to next floor level and stop. B.1.4.2 Any lift shall meet requirements of local regulations and shall be inspected, tested and maintained by qualified persons. B.2 Rescue and Recovery B.2.1 General It shall be possible to rescue and recover persons from sea back to platform or to a safe place. B.2.1.1 Opportunities to rescue and to recover persons shall be available in acc. to location, environmental conditions and number of persons. B.2.1.2 A rescue and recovery philosophy and plan shall be prepared. Following items to be observed: • number of persons who may need to be rescued or recovered • capacity, remoteness and response time of the emergency services • potential limitations on availability, e.g. daytime, weather conditions and sea states • all stages of the operation to be covered • additional work activities are required, e.g. over side, under deck • additional tools for emergency situations B.3 Evacuation B.3.1 The purpose of the evacuation system is to ensure means of safe abandonment of the installation/unit for the maximum personnel on board, following a hazardous incident and a decision to abandon the installation/unit. B.3.2 The preferred methods of evacuation for installations/units have to be defined and may include the following: • helicopter • lifeboats, conventional or free-fall • escape chute with life rafts • life rafts, over board or davit launched • boat landing B.3.3 Number, size and location of evacuation means shall be established based on manning, risk analyses (e.g. risk exposure of muster area and escape routes towards this area) and the evacuation, escape and rescue strategy. Primary and secondary means to be named. Edition 2013 Germanischer Lloyd Page 3–3
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(IV-7-3) General Safety

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