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High-mast LEDs solve problems at Scottish port

As space is at a premium on the quay, the challenge was to illuminate effectively with minimal fittings which had low glare, good uniformity and the ability to withstand the elements on this exposed location.

THE PORT of Nigg – on the north shore of the entrance to the Cromarty Firth in the Scottish Highlands – has over 900 metres of deep water on its quayside and caters for the largest mobile drilling ships in the oil industry.

An extensive £20 million redevelopment saw the the addition of a new West Finger Jetty.

As space is at a premium on the quay, the challenge was to illuminate effectively with minimal fittings which had low glare, good uniformity and the ability to withstand the elements on this exposed location. The solution was a series of high mast, high output LED luminaires, in this case the High Mast  Advanced Optic fittings from Holophane.

Fifty-two fittings, each with a combination of six head and 10 head frames, were supplied on 30-metre masts.

The HMAO lights feature Highmast 2 PrismaLED glass refractors to accurately control the light output, reduce glare and deliver good vertical illumination while also maximising column spacing. The optical assembly is rotatable for on-site alignment ensuring the light output is directed to the appropriate areas and the weight of the luminaires is distributed evenly over the headframe.

The lighting also solved the problem of glare or light pollution from the site, an issue that existed with the previous installation. The heatsinking gear housing draws heat away from the critical components to keep the drivers and LEDs cool. The low static glass in the optical assembly works in conjunction with the flow of heat around the refractor to achieve a self-cleaning effect further reducing the need to maintain the product and keeping running costs to a minimum throughout the life of the installation.