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时间:2011-10-21 17:06来源:蓝天飞行翻译 作者:航空
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11.7.3 Operational Considerations
Consideration to provide Jet-A1 refuelling facilities should be given where the distance from shore to an installation or vessel (with an operational helideck) exceeds 50 nautical miles.
The potential uplift of aviation fuel during operations should be properly calculated and the results used to dictate minimum system sizing.  Allowances should be made for unusable fuel, potential re-supply problems (e.g. weather delay), emergency reserves, etc.
It should be noted that the CAA also imposes requirements on helicopter operators when planning offshore fuel diversions.  Therefore, it is important to discuss non-provision of refuelling facilities on an offshore installation or vessel with the installation operator, MODU or vessels owner and helicopter operator.
If intending not to provide on-board refuelling on a fixed installation or floating structure, the following factors should be properly evaluated and mitigated:
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The ready availability of alternate refuelling options within a short distance of the installation or vessel

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The increased risks likely to be incurred when alternate offshore refuelling sites have to be used (i.e. risks associated with increased take offs and landings)

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The increased cost of using alternate offshore refuelling sites.  Potentially, these costs can be very high over the ‘life of installation’ due to the additional flying time involved

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The potential for increased operating expense due to logistical delays.


11.7.4  General Design Considerations
11.7.4.1 General
The design and construction of an aviation refuelling system requires careful consideration to ensure that the equipment can be safely and efficiently operated and maintained.
System components such as the storage tanks and skid mounted pumping, metering and dispenser units are generally designed, fabricated and supplied by specialist manufacturers. The connecting pipework and storage tank areas are usually the domain of a vessel builder / module fabricator.
11.7.4.2 Aviation Fuel Storage
Aviation fuel storage areas on offshore installations and vessels require considerable thought during their design.  There may be one or more areas and they may contain fixed or transportable tanks or a combination of both.  The number of tanks and their capacities will be dictated by the aviation fuel requirements calculated for the operation.  
Aviation fuel tankage should be located where potential fire risks do not imperil the installation / vessel.  It is particularly important to note that the storage facility will require an adequate fire detection / protection system (all round deluge coverage is the preferred solution) and adequate containment and drainage systems.  This system should be an integral part of the installation / vessel loss control specification.
 
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