Wednesday, May 23, 2012

Case Study: Dialight LED Lighting Proves Less is More at City of London Waste Transfer Facility

Installation Snapshot

• 2.59 square kilometers
• Number of LED fixtures – 127
• Replaced – 134W fluorescent & 275W SON
• Energy reduction – 70%

Its recent upgrade to Dialight high-efficiency LED High and Low Bay fixtures has enabled the City of London Corporation to slash energy use by approximately 70 percent, reduce total fixture count by one-half and virtually eliminate lighting maintenance, all while significantly improving visibility and overall operational efficiency at its quad-level Walbrook Wharf. With a change-out that took less than five minutes per fixture, the Corporation expects to see a positive return on investment in as few as just 3 years.

Small Space, Big Responsibility

Charged with complete municipal operations for the City of London’s central business district, the City of London Corporation’s one-square-mile footprint may seem small, but there are some big shoes to fill. The Corporation is the sole public works provider for the zone, providing for all utilities, public safety, street maintenance and winter maintenance, refuse collection and complete facilities management for city-owned properties. The majority of these operations are run out of the Corporation’s Walbrook Wharf facility. Originally constructed in 1960, this bustling four-level parking and vehicle maintenance hub, houses the Corporation’s day to day operations.

For the last 50 years, the facility had relied on the original lighting fixtures put in place at the time of construction. Mostly five- and six-foot fluorescents with a few 400W high-pressure sodium units, the fixtures had not only become obsolete but also a significant drain on resources—both in terms of maintenance time and costs and energy consumption. The 134W fluorescent and 275W SON fittings were hardly energy efficient and required frequent replacement, as they were often hit by truck drivers. Because of the inefficient warm-up time required, especially for the HPS fixtures, the lights in the facility were often left on 24/7.

The fixtures were also dirt collectors, which reduced visibility as diesel exhaust soot and dust from the constant traffic built up over time. To ensure safety and avoid frequent interruption of traffic flow, the Corporation underwent a complete facility-wide fixture cleaning and relamp project every 18 months—a costly and time-consuming process.

Dialight Upgrade Delivers Modern Efficiency

Faced with a resource-intensive maintenance treadmill, the Corporation was determined to upgrade to a more efficient and environmentally friendly lighting solution, partly to save energy and money, but also to meet the Corporation’s Energy Reduction Action Plan (ERAP) and avoid being taxed on its carbon footprint through the UK’s Carbon Reduction Commitment (CRC) program.

As part of its commitment to achieving the ERAP and CRC energy and carbon reduction targets, the facility aimed to reduce electricity consumption by 15 percent by 2015. Realizing the high impact lighting had on its energy use, the facility immediately honed in on this area to offer the largest and quickest potential savings.

After learning about the success of Dialight’s fixtures at London’s ExCeL Centre, the Corporation quickly arranged for a three-month trial of Dialight’s LED Low Bay fixtures.

“The Dialight product met all of the criteria we were looking for in terms of substantial energy reduction, lower maintenance and durability,” said the project team based at Walbrook Wharf. “Once we spoke with the facilities manager at the internationally renowned ExCeL Centre, it was a no-brainer for us to proceed with the upgrade to Dialight LEDs throughout the facility.”

Less is More: Better Lighting with Fewer Fixtures, Less Energy

The facility initially installed 25 80W LED Low Bay fittings for a 1-for-2 replacement of its existing fluorescent fixtures on the 2nd floor parking area. The Corporation immediately realized a dramatic improvement in visibility, thanks to the superior color rendering and specialized optics design of the low-bay products, and a real-time energy savings of 70 percent, all while increasing the lux level, even with exactly half the number of fixtures in place.

In phase two, the depot installed 19 Low Bay and two High Bay units on the ramps between the 1st and 2nd floors, and another 17 Low Bay fittings on the 1st floor parking level. By reducing the fixture count and electricity required to drive the system, the Corporation was able to cut the power demand from 16 amps to 5 amps per floor.

An additional 12 High Bay units are also now in place in the salt storage area, with plans to upgrade the vehicles workshop area with an additional 52 Dialight Low Bays in the very near future, bringing the total Dialight LED fixture count at Walbrook Wharf to 127 units.

Adding to the significant reduction in energy use, each parking deck has been equipped with occupancy sensors that detect motion and activate the fixtures only as needed. If no motion is detected, the lights automatically turn off after about 15 minutes. Requiring zero warm-up upon restrike, the Dialight LEDs’ instant-on capability has enabled this automatic on-off feature to cut “on time” by about 50 percent, saving a tremendous amount of energy compared to the previous 24/7 operation and significantly extending the life of the fixtures themselves.

“The Dialight units are rated for a minimum 60,000-hour life span, which equates to almost seven years of continuous operation without a single bulb change required,” said the team. “Since the occupancy sensors reduce operational time, they are likely to last much longer than their given life expectancy.”

So far, the upgrade to LED has reduced annual operating time of the fittings by 2,190 hours, saving more than 121,000 kWh per year, which equates to more than 8 percent of the facility’s entire energy consumption. Between the reduced energy use and maintenance demands, the Corporation expects to realize an annual savings of more than £15,000.

“And, with Dialight’s five-year warranty, we’re confident we won’t have to touch these fixtures, other than for an occasional washing, for many years,” says the team, noting the fixtures are IP66 rated, which makes periodic wash-down safe and easy. “We were also quite impressed with the fact that each fixture took only about five minutes to change out. Each came pre-wired with a simple hook and plug mounting system that made for a very easy and efficient retrofit.”

Dialight’s Durability, Sustainability Make for a Long-Term Solution

Beyond the energy and maintenance advantages, the robust solid-state Dialight fixtures also offer superior durability and resistance to shock and vibration, which are critical factors in the parking facility where heavy truck traffic can damage less resilient filament-based lighting fixtures. Furthermore, because the LED units emit much less heat compared to conventional fluorescent or HPS units, there’s a much lower risk of fire due to overheating, especially as fine particles inevitably accumulate on the fixtures.

With a payback period of less than three years, the Walbrook Wharf Dialight LED conversion has provided an energy-efficient lighting solution that puts the Corporation well under its ERAP and CRC energy- and carbon-reduction goals long before the 2015 deadline. As the entity continues to look at ways to optimize operations and minimize its environmental footprint throughout all its facilities, Walbrook Wharf serves as a showcase for the potential energy, maintenance and cost savings made possible by Dialight LED lighting solutions.

For more information about Dialight LED lighting solutions in high and low bay applications, visit

Thursday, May 10, 2012

Dialight Launches First FAA-Certified L-864 Red Beacon with Integral IR LEDs

Latest Addition to Dialight’s Industry Leading Vigilant® Series LED Obstruction Lighting Portfolio Improves Visibility and Safety for Aviation Near Military Bases

FARMINGDALE, N.J. (May 10th, 2012) -- Dialight (LSE: DIA.L), the market leader in LED obstruction lighting, today announced the availability of its new Vigilant L-864 Infrared (IR) LED-based Medium Intensity Red Beacon, the first product of its kind incorporating both red and IR LEDs in a single unit.  The product has been FAA certified to 150/5345-43F. The IR integration ensures better visibility for aircraft pilots using Night Vision Goggles (NVGs) and Aviator’s Night Vision Imaging Systems (ANVIS) for improved safety near military bases and airfield perimeters within the most energy-efficient L-864 beacon in the industry.

The new IR beacon is the newest innovation in Dialight’s decade-long history of delivering the most energy-efficient LED obstruction lighting solutions for towers, buildings, smokestacks and more. The company continues to expand its integrated IR product line; the IR L-864 beacon now joins Dialight’s IR L-810 side marker light, the first-ever LED obstruction light certified to 150/5345-43F with integral IR LEDs.

“Dialight leads the LED obstruction lighting market with superior technology and innovation that is shaping the future of aviation navigation,” said Roy Burton, Dialight Group Chief Executive. “This latest product delivers exceptional energy efficiency, virtually zero maintenance and built-in IR technology that eliminates the need for bolt-on systems that add to both wind resistance and maintenance costs.”

NVGs and ANVIS typically employ Class A, B and C filters that can reduce visibility of typical LED light sources. Unlike other beacon systems that require separate IR units, the Vigilant IR beacon incorporates night-vision-friendly IR LEDs and red LEDs in the same unit, leveraging the same compact design of Dialight’s standard L-864 to produce the smallest and lightest-weight flash head on the market. This smaller footprint significantly reduces wind load compared to incandescent L-864 beacons and makes for much easier installation. The multi-patented system also features community-friendly optics for minimum ground scatter. The system offers a peak IR spectral intensity at 860 nanometers.

A new hinged lid design enables easy access to terminal block wiring for installation and power supply maintenance. Control circuitry may be located at the base of the tower for better protection against lighting, while the IP66 certified beacon design is factory sealed for durability and rugged performance in the harshest conditions, even at operating temperatures ranging from -40°F to 131°F (-40°C to +55°C). With a 10-year LED life expectancy, backed by Dialight’s 5-year full-performance warranty, the Vigilant IR L-864 beacon dramatically reduces maintenance costs, virtually eliminating expensive tower climbs, unplanned site visits and the risk of non-compliance fines due to burned-out bulbs.

In addition to exceptional maintenance savings, the unit is also extremely energy efficient to save on electricity costs, drawing only a small fraction of the power required by a typical 1400W incandescent system. Rated at just 40W, the Dialight IR L-864 operates at 6.7W on a normal 16.7% duty cycle of 20 half-second flashes per minute. The typical incandescent draws more than 230W on the same cycle. This low-power consumption also provides for extremely low RF interference, making it ideal for lighting “hot” AM towers with no disruption in signal transmission.

The Vigilant IR L-864 can even be adapted to existing incandescent beacons for a future-proof system. Should the red beacon fail on a dual incandescent, the IR L-864 can be synchronized with the existing white incandescent, to get the maximum possible useful life out of the existing technology.

In addition to FAA certification, the IR L-864 is also compliant with the ICAO Annex 14 and Aerodromes Design Manual European specification and Transport Canada’s Canadian Aviation Regulation CAR 621.19.

For more information about the Vigilant IR L-864 and other Dialight obstruction lighting solutions visit Dialight’s products are listed on the U.S. federal government’s GSA Schedule 56 for Buildings and Building Materials/Industrial Services and Supplies under contract number GS-07F-0664X.

Wednesday, May 2, 2012

Dialight Achieves FPAL-Certified Supplier Status

Company Passes Rigorous Oil & Gas Industry Supplier Qualification Process

Newmarket, UK – (2 May, 2012) Dialight (LSE: DIA.L), the global leader in LED lighting technology, announced today that the company became a fully registered, FPAL-certified oil & gas industry supplier on 19 April 2012. FPAL, a supplier management services solution provided by the Achilles Group, coordinates thorough evaluations of UK, Dutch and Irish oil & gas industry suppliers, enabling purchasing members to comply with EU Utilities Procurement Directives.

“We’re extremely pleased to have achieved FPAL certification,” said Dave Richardson, Chief Executive of Dialight EMEAA. “FPAL maintains a list of registered suppliers to make sure buyers are matched with qualified suppliers, so we’re proud to be included on their list and look forward to the opportunity to serve additional oil & gas customers as a result.”

FPAL, which was established in 1996, is dedicated to providing the perfect supplier for every buyer and carefully evaluates prospective supplier credentials. The organization monitors suppliers on an on-going basis to ensure that buyers have access to the highest quality suppliers available. The organisation is governed by a committee comprising industry professionals.

Dialight provides a range of high-quality LED lighting products designed especially for industrial and hazardous area illumination, including the SafeSite® family of products. Dialight helps customers reduce costs while conserving scarce environmental resources. For more information, visit