Helicopter guidelines for land seismic & helirig operations - OGP

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International Association of Oil & Gas Producers 64 © OGP
Helicopter guidelines for land seismic & helirig operations Annex G Generic hazards & controls inventory The appendices present an inventory of known hazards in land helicopter supported geophysical operations. They also incorporate suggested controls that may be used to reduce the potential risks presented by these hazards. The inventory captures industry experience on causes of accidents in the past and should be consulted when compiling the formal Hazard Register for the HSE-MS of an operation with helicopters. The words ‘hazard’ and ‘risk’ are used loosely in association with the widest possible meaning of ëanything with a potential to cause harmí. Risks (before and after controls are applied) must be assessed on a case-by-case basis, as they will depend on the type and location of an operation. Common ground is generally not addressed. The focus is on specific land helicopter supportrelated hazards. However, to err on the safe side, some hazards common to other types of operations are included. Also, most general aviation hazards, such as mechanical failures of the aircraft or pilot error etc. are not included. G.1 Environmental hazards & suggested controls Weather Hazard description Adverse weather conditions that may affect helicopter operations include: • Low clouds, fog, rain or snow reducing visibility, risk of: —Collision — with obstacles. —Getting — lost during VFR flights. • Freezing temperatures that may result in: —slippery — walkways, —ice — accumulation on the aircraft. —ice — accumulation can also be the cause of breaking antenna wires etc. —adversely — affect engine performance (failure to start). • Strong winds, especially around hilltop helipads can: —Affect — the flight path of the helicopter. —Cause — trees at edges of forest (helipads, rivers etc) to fall. —Cause — dust or light objects in the air (FOD) • Glare from low or reflected sun: —Can — be blinding to pilot —May — make a helipad difficult to locate Suggested controls • Plan operations taking into account prevailing weather conditions and the extremes that can be expected in the course of the operations. • Ensure availability of regular, reliable weather forecasts and advanced warning system for adverse conditions. • Avoid weather conditions that are outside the operating envelope of the aircraft in use. Availability and map of emergency landing locations. • Incorporate weather conditions in Manual Of Permitted Operations and Emergency Response Plan. • The Pilot has the obligation and must have the authority to suspend or modify operations, without further approval from management, in case of adverse weather. • Avoid presence of personnel at edge of helipads cut in jungle, as trees may fall inwards. Place camps, shelters etc well inside the forest. • Keep landing pad at least one tree height away from tree line. • Minimize flying below tree line. • Avoid dry dusty helipads, spray with water or treat/cover otherwise. • Housekeeping: no loose light materials near helipad or flight path. • Take into account when positioning helipads and related direction of approach path. • Avoid strongly reflecting surfaces near landing locations © OGP 65
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Helicopter guidelines for land seismic & helirig operations - OGP

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