The supply of streetlighting luminaires for the South African National Roads Agency Limited's (Sanral's) Gauteng Freeway Improvement Project (GFIP) is between 80% and 90% complete, says public lighting specialist Beka MD Johann Schleritzko.
Beka was awarded the contract to supply lights for the GFIP in 2008 and is on track to complete the supply and delivery of the luminaires before 2012. The tender for the contract included stipulations for the efficiency of the lights, which Schleritzko says, were met in the luminaires supplied by Beka.
The company's Onyx 33 600-W product was selected to be installed on 20-m masts, mounted on the central median of the freeway. The luminaires provide the specified lighting level for up to five lanes in each direction of travel. The distance between the masts has been calculated to reduce the energy consumption for each kilometre of freeway.
The reflector system of the Onyx 33 allow for spacing of about 58 m between lights. This contributes to increased efficiency as fewer lights need to be used on a stretch of road.
The value of the order for luminaires is about R25-million for 6 500 luminaires, which Beka reports is the biggest order for streetlight luminaires ever awarded in Southern Africa.
The Onyx 33 was designed by the Belgium Schréder group, of which Beka is part. The luminaire consists of an aluminium alloy housing made from a corrosion-resistant alloy and with a sealed optical system.
Schleritzko says that the sealing system is significant in increasing the longevity of the light. The tight fixture ensures that no dust or moisture enters the luminaire and affects the performance of the globe. The luminaires are designed to operate reliably and safely at ambient temperatures of up to 50 oC.
The estimated life for the high-power light source in the luminaires is between three to four years.
The lamps were locally assembled at Beka's Olifantsfontein factory, north of Johannesburg.
Beka has also provided a number of lighting solutions for the 2010 FIFA World Cup stadiums. Notably, the light-emitting diode (LED) lighting for the arch at the Moses Mabhida stadium, in Durban. The company reports that the lighting of the arch was the largest LED project to date in the southern hemisphere. Other stadiums that Beka was involved with are Soccer City, in Johannesburg, Green Point stadium, in Cape Town, the Nelson Mandela Bay stadium, in Port Elizabeth, and the stadiums in Polokwane, Bloemfontein and Rustenburg.