■Project Date: December 2018
■Project: Beijing Daxing International Airport Oil Depot Lighting Project
■Application: Oil Storage Areas, Internal Roads and Inspection Routes
■Scope of Supply:
◎2 × 20 m Mechanical-Lowering High Masts
◎4 × 30 m Mechanical-Lowering High Masts
◎86 × 8 m Solar Streetlight Poles with Grid-Backup Provision
■Delivery Period: 32 Days
This project involved outdoor lighting infrastructure for the oil storage facility serving Beijing Daxing International Airport, covering tank storage areas, internal roads, and inspection routes.
The site presented two distinct requirements. Large operational areas needed high-mounted lighting for broad coverage, while remote roads and scattered locations required a solution that could reduce extensive underground cabling.
A combination of mechanical-lowering high masts and solar streetlight poles with grid-backup provision was selected to address these different site conditions.
The 20 m and 30 m high masts feature lowering luminaire rings, allowing lighting equipment to be brought to ground level for maintenance. The 8 m solar streetlight poles were configured for distributed lighting locations with hybrid power requirements.
The project comprised six high masts and 86 solar streetlight poles, with a total delivery period of 32 days.
Challenge 1 | Hazardous-Area Requirements and High-Level Maintenance
The oil depot handles flammable materials, making hazardous-area equipment selection and electrical safety important project considerations.
Maintenance access was another concern. Servicing luminaires mounted on fixed 20 m or 30 m high masts would normally require aerial access equipment, adding complexity to maintenance activities in a controlled industrial environment.
→Engineering Response
Selected mechanical-lowering luminaire rings for the 20 m and 30 m high masts, allowing lighting equipment to be lowered for ground-level inspection and maintenance.
Allowed for luminaire and electrical component selection according to the site's hazardous-area classification and applicable project requirements.
Integrated the lowering mechanisms into the high mast assemblies to support installation, maintenance, and secure repositioning of the luminaire rings.
Challenge 2 | Wind Loading and Structural Stability
The oil depot's open layout leaves the high masts exposed to wind. Multiple floodlights mounted on elevated luminaire rings increase the wind-exposed area and impose additional loads on the supporting structures.
Both mast heights required structural design appropriate to their mounting height, luminaire arrangement, and local wind conditions.
→Engineering Response
◎Used Q355B structural steel for the high mast structures, with structural calculations based on site-specific wind loads.
◎Checked mast strength, top deflection, and overturning stability for the 20 m and 30 m configurations.
◎Evaluated the combined loads from the luminaire rings and mounted lighting equipment.
◎Checked upper mast connections and luminaire-ring supports against the applicable design loads.
Challenge 3 | Power Access for Remote Inspection Roads
Some internal roads and inspection routes were located away from existing power distribution points.
Extending conventional grid-powered lighting to these locations would involve additional trenching, cable installation and associated civil works.
→Engineering Response
◎Provided 86 solar streetlight poles with provisions for photovoltaic power, battery storage and grid backup.
◎Adopted a hybrid power configuration intended to use stored solar energy for nighttime lighting, with grid power available when battery capacity is insufficient.
◎Reduced dependence on long underground cable runs at distributed lighting locations.
◎Allowed the power supply arrangement to be matched to the lighting demand and local installation conditions.
Challenge 4 | Coordinated Delivery of Three Pole Configurations
The project involved three different pole configurations, each with its own structural and installation requirements.
Delivery also had to be coordinated with ongoing tank construction, pipeline installation, and other site activities.
→Engineering Response
◎Organized separate production batches for the 20 m high masts, 30 m high masts, and 8 m solar streetlight poles.
◎Coordinated fabrication, corrosion protection, inspection, and shipment across the different product configurations.
◎Planned deliveries around site construction progress to reduce scheduling conflicts between material arrival and installation readiness.
◎Provided technical support for high mast installation and lowering-mechanism commissioning.
◎The overall project delivery was completed within 32 days.
The project delivered:
→6 mechanical-lowering high masts: 2 × 20 m and 4 × 30 m for wide-area lighting at the tank storage and main operational areas.
→86 solar streetlight poles: 8 m configurations intended for internal roads and distributed lighting points with hybrid power requirements.
→Ground-level maintenance access: Lowering luminaire rings reduced the need for elevated access equipment during routine high mast servicing.
→Flexible power arrangements: Solar streetlight provisions helped reduce dependence on extensive underground cabling at remote locations.
→Coordinated multi-product delivery: Three pole configurations were supplied within the 32-day project schedule.
The project combined high mast lighting and distributed solar streetlight infrastructure to address different lighting, power access, and maintenance requirements across a large industrial facility.
This project highlights our ability to supply coordinated lighting pole solutions for oil storage and other industrial facilities with varied site requirements.
▲Mechanical-Lowering High Mast Engineering: 20 m and 30 m high mast structures with lowering luminaire assemblies designed to improve maintenance accessibility.
▲Structural Design for Elevated Lighting: Structural calculations and wind-load verification based on mast height, luminaire loads, and site conditions.
▲Hybrid Solar Lighting Support: Solar-ready streetlight poles with provisions for photovoltaic, battery, and grid-backup configurations at distributed lighting locations.
▲Multi-Product Project Coordination: Manufacturing, delivery planning, and technical support for different pole heights and configurations within a single project.
Similar solutions can be adapted for oil depots, petroleum storage facilities, petrochemical sites, and other industrial locations requiring a combination of wide-area lighting and distributed streetlighting.
