A hazardous area can be defined as an area in which flammable substance in the form of gas, vapour or dust when mixed with the air, is present in such proportions that it can explode when in contact with an ignition source. This mixture of gas and air in proper proportions is important in the equation. The mixture must be between the lower flammable limit and the upper flammable limit in order for an explosion to occur. Most traditional flammable gases and vapours have limits between 2% - 10% fuel to oxygen ratios. In order for ignition to occur, a certain amount of energy is needed.
The minimum ignition energy is the smallest possible amount of energy which is converted during the discharge of a capacitor and is just enough to ignite the most ignitable mixture. The minimum ignition energy is around 10-5J for Hydrogen.
Area Classification
Hazardous areas are classified with respect to the potential danger of an explosion and the areas are divided into zones:
Zone 0/20:
An area in which an explosive atmosphere is continually present or present for long periods, typically over 100 hours per year.
Gas (G) is zone 0 and dust (D) is zone 20.
Zone 1/21:
An area in which an explosive atmosphere is likely to occur in normal operation, typically between 10 and 100 hours per year.
Gas (G) is zone 1 and dust (D) is zone 21.
Zone 2/22:
An area in which an explosive atmosphere is not likely to occur in normal operations and, if it does occur, will exist for only a short time, typically less than 10 hours per year.
Gas (G) is zone 2 and dust (D) is zone 22.
Bulkhead
Our bulkhead is designed for applications where a low profile robust luminaire is required. It is ideally suited for gantry and walkway lighting in arduous industrial environments, even in low temperatures down to -50 degrees centigrade.
Available with a range of coloured lamp glasses it is also suited to obstruction and area status lighting.
The Vanguard is fully self contained incorporating ballast and power factor connection where necessary (all HID luminaries are supplied with a 2.0A in-line fuse). This makes it easy to install and maintain.
The luminaire is constructed from corrosion resistant die cast aluminium (LM6) and has toughened boro-silicate glass with stainless steel fastenings.
It is designed to accommodate the following range of high pressure discharge lamps:
- 70W SON,
- 50W or 80W MBF,
- 150W GLS (max),
- GOST Approved.
Hazardous Light #1
Our slim line lightweight Zone 2 fluorescent luminaire is simple to install and maintain, ideally suited to a range of applications including:
- Oil & Gas Industry,
- Petrochemical Industry,
- Distilleries,
- Water Pumping and Sewerage Treatment,
- Agricultural,
- Food Industries,
The Marquis utilises HF electronic control gear and has single or twin 18W, 36W, 58W lamp options.
GOST Approved.
Hazardous Light #2
Hazerdous Pendant #1
Our light pendant is designed to provide medium and high bay lighting in hazardous Zone 2 areas. It is easily installed and maintained allowing simple lamp replacement. The Monarch is suitable for pendant mounting or up to an inclination of 45 degrees.
The VL14 has a low loss ballast with power factor correction for HID and compact fluorescent lamps, options include:
- SON - 70W, 100W,
- MBF - 50W, 80W, 125W,
- MTBF - 150W,
- GLS - 200W,
- Victor VL35 - 26W compact fluorescent,
- GOST Approved.
Hazerdous Pendant #2
Our Zone 2 luminaire is designed to provide medium and low bay lighting offering excellent light distribution.
The multiple lamp type and wattage options gives an ambient temperature range of -45 to +55 degrees centigrade ideal for applications in the:
- Oil & Gas Industry,
- Chemical, Petrochemical and Pharmaceutical Industry.
The painted aluminium body is corrosion resistant and the unrestricted breathing gear enclosure removes the need for special glands or cable.
GOST Approved.
Wellglass Lamp
Our wellglass lamp has a wide ambient temperature range from -50 to +70 degrees centigrade and is designed for use in the most hostile hazardous gas and dust environments.
Lightweight and low profile construction features a simple 'slide and lock' mounting mechanism making it easy to install in restricted access locations. The unique design also eliminates the exposed flame-path further reducing installation and maintenance times.
The VL147 has a range of coloured glass lenses so it can be used for Heli-deck perimeter marking in accordance with CAP437. A spigot mounted version is also available.
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