曝光台 注意防骗
网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
Regulation 18.8 requires specific design considerations to be taken into account where the helideck surface is located above the bridge or accommodation areas.
Generally, there will be a requirement for installing either passive fire protection measures beneath the helideck surface and on the support structure and / or installing fire shutters / doors to protect the bridge windows and any access points below helideck level.
7.2.3.7 Firefighting
When establishing a helideck firefighting philosophy and designing the fire systems, full account should be taken of the anticipated helideck manning and fire team composition / emergency response during helideck operations. This topic should be discussed at an early stage in the project with the MODU or vessel owner in order to obtain a clear understanding of the operating intent. Guidance on helideck manning issues is also provided in the UKOOA Guidelines for the Management of Offshore Helidecks [Ref: 49].
Where crew numbers may be at a minimum, yet consistent with safe helideck operations, having fire systems available that can be simply operated will be an overriding requirement.
For example, when designing a foam system it should be ensured that the system can be operated from a single control point without having to set or actuate a lot of valves.
MODUs and specialist vessels will, at times, operate in remote locations with infrequent vessel and / or helicopter support. This situation may mean that re-supply of foam concentrate cannot be speedily undertaken.
Also, it is probable that the storage of large quantities of foam concentrate is undesirable, with space at a premium. Therefore, the foam system(s) should be designed to ensure that it has maximum flexibility for foam sampling and systems testing without contaminating or using a full charge of foam concentrate. Specifying a ‘one-shot’ system should be avoided at all costs.
On vessels, particularly those with forward mounted helidecks (e.g. on the Foredeck), the design of fire protection systems should take into account the exposure of equipment to the effects of operating in heavy seas. All permanently fixed exposed piping systems, valves and supports, etc. should be robust. Where possible, equipment such as hoses and nozzles should be stored in cabinets that are adequately protected and preferably not placed in exposed locations.
For example, equipment and hose cabinets may be located behind the ‘bridge wings’ for protection, provided they are easily accessible during helicopter operations.
7.2.3.8 Helicopter Fuelling
Vessel motions constantly agitate liquids in storage tanks. If the owner specifies helicopter fuelling, the system will require proper consideration during design otherwise the fuel quality may be seriously affected during operations.
Where aviation fuel storage tanks (fixed or portable) are installed on vessels and they are unlikely to be completely emptied it is highly recommended that the tanks be equipped with floating suction systems. This arrangement is designed to enable fuel to be decanted from the tanks above a level where disturbed sediments and other impurities may be present.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：
离岸直升机起落甲板设计指南 OFFSHORE HELIDECK DESIGN GUIDELINES 1(36)
