Recessed platforms can be built into the helideck perimeter at appropriate locations, coincident with the perimeter safety net. They should be capable of restraining the trolley when stowed but should not be too deep or too steep to
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prevent easy manhandling of the trolley by one person. Platform width should be kept to the minimum required for the trolley(s) in order to reduce loss of the Perimeter Safety Net coverage.
11.5.10 Helideck Fire Detection
There is no stated requirement in CAP 437 for providing fixed fire detection on the helideck.
The assumption is that during helicopter operations the HLO and helideck crew will be in the immediate vicinity of the helideck and they are responsible for ensuring an initial emergency response to fire and crash scenarios that may affect a helicopter. After the initial helideck crew response, back-up can be obtained from the installation / vessel fire and emergency teams, if required.
From an offshore installation / vessel operations viewpoint, the management of all emergencies that have potential for jeopardising the safety of the installation / vessel, must immediately be identified and centrally co-ordinated. Therefore, providing helideck fire detection and surveillance arrangements would be consistent with normal installation / vessel emergency control philosophies.
Consistent with normal installation and vessel fire detection and protection practices, the helideck should be designated a fire area and be assigned an area on the Central Fire Control Panel.
11.5.10.1 Equipment Specification
Strategically located Manual Call Points (MCPs) should be installed on the helideck. Normally, these will be located at each fire monitor / helideck access platform. Where an aviation refuelling facility is installed, MCPs should also be located strategically by the dispenser, pumping unit and bulk helifuel storage areas.
The MCPs should be connected to annunciators on the Central Fire Control Panel.
11.5.10.2 Helideck Surveillance
Helideck surveillance both during helicopter operations and at other times is prudent installation or vessel management and can be achieved in a number of ways. Methods currently used are as follows and the option selected should be based on a practical assessment of the helideck location and the installation or vessels role, etc.
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Visual monitoring from a permanently manned control point (CCR, Bridge or HLO Cabin) through a window overlooking the helideck.
