离岸直升机起落甲板设计指南 OFFSHORE HELIDECK DESIGN GUIDELINES 2(36)

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Where possible, designers should consider placing the side signage panels that are used for helicopter operations at as high a level as possible on the Installation. Suitable locations may be found on drilling derricks and other elevated structures.
11.2.4.4 A Common Identification Requirement
The installation identification boards, radio callsign and the helideck identification marking should all be the same to avoid any opportunities for confusion during operations.
11.2.5 Obstruction Markings
The objective of providing obstruction markings is to identify and highlight physical obstructions around the helideck and the installation environs that could present a hazard to helicopters.
Designers should pay particular attention to identifying any physical obstructions that could present a hazard to helicopter operations and to specifying markings in accordance with CAP 437.  Obstructions requiring marking may include:
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Cranes

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Drilling Derricks

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Burner Booms

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Flare Stacks

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Communications Towers

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Gas Turbine Exhaust Support Structures

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Any structures that infringe any of the obstruction free criteria and have been identified as a helideck restriction by BHAB Helidecks.

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Any other structures that are adjacent to potential flight paths where marking may provide additional and beneficial visual clues to flight crews.

11.2.5.1 Paint Schemes
The paint schemes selected for marking major structural obstructions should be properly specified including the use of special high temperature finishes for flare stacks and gas turbine exhausts.
Gas turbine exhaust systems and their support structures often do not present a physical obstruction to helicopters due to their inboard location.  However, there is considerable merit in marking these structures to highlight them to helicopter crews as the source of hot emissions that may affect helicopter performance and safety.
Normally, the markings on main structural obstructions should be RED and WHITE bands dimensioned as noted in CAP 437.  However, CAP 437 does allow alternate colour schemes.
Although CAP 437 makes no distinction between the types of structural obstruction and the colour schemes to apply, it is highly recommended that any structures that are cited as infringements to the obstruction free criteria should be marked with BLACK and YELLOW bands.
In the case of gas turbine exhausts, BLACK and WHITE / SILVER is acceptable. High temperature paint systems suitable for gas turbine exhaust systems tend to have limited colour ranges.
11.3 VISUAL AIDS - LIGHTING SYSTEMS
11.3.1 Main References
CAP 437, Chapter 4.
ICAO Annex 14, Volume 2 (Figure 5-9 for light isocandela diagrams).
DERA Research Paper into Helideck Lighting [Ref: 66].
CAA Helideck Lighting Interim Guidance (Letter dated 17 November 2003) [Ref:
　
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